AU4933899A - Adiabatic internal combustion engine - Google Patents

Description

Specification [A translation of the International Aplication (No. PCT/JP99/04179)] Adiabatic internal combustion engine Technical field This invention relates to an adiabatic reciprocating engine, and an adiabatic rotary engine and an adiabatic compression the ignition rotary engine which insulated the combustion chamber of the spark ignition engine or the compression ignition engine from heat. Background technology The conventional reciprocating engine and the rotary engine had the fault with bad thermal efficiency that about 1/3 of the generation energy at all loads become cooling loss. All the conventional adiabatic engine was the engine of the compression ignition system, the adiabatic engine of the spark ignition system which considers the gasoline engine representation did not exist at all, because the conventional adiabatic engine covered with the heat insulator (ceramics) on the combustion chamber which insulated the combustion chamber wall that becomes the high temperature too much and to start the preignition. Moreover, it is the stage where research of the diesel engine which insulated the combustion chamber with ceramics is advanced, and it is a situation which is equal to marketing is not made. It depends on the adiabatic engine under the research decreasing cooling loss by insulation or trying to lose, raising burning the maximum temperature more than the conventional engine, and increasing the output. However, when the burning maximum temperature of the conventional engine made it go up more than it, even if it has the temperature which starts problems, such as abnormal combustion, and making an output increase from the conventional engine be hardly completed but it fell or lost the cooling loss by heat insulating, the exhaust temperature rose that much and thermal efficiency did not so many increases. Moreover, since the conventional adiabatic engine was only insulated from heat, the combustion chamber wall became high temperature too much at the time of high load and waked up firing with the fuel injection simultaneously, the smooth combustion like the conventional diesel engine does not become, but turns into intermittent combustion, and the output like the conventional diesel engine did not come out. Moreover, since the conventional adiabatic engine which has insulated the combustion chamber used ceramics for the heat insulator, that cost starts fabrication and machining too much and the hard brittle characteristic lacked tolerance to the shock, and it had problems, like the reliability to durability is low. And the conventional diesel engine and the conventional adiabatic engine had the high

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cooling loss is fallen or lost, that much, the fuel is lessened and the fuel consumption is improved rather than the conventional engine. In the adiabatic compression ignition engine, the temperature of the combustion chamber wall is made not to become the high temperature (temperature exceeding 850*C) which starts ignition simultaneously with the fuel injection, and, in the adiabatic spark ignition engine, the temperature of the combustion chamber wall is made not to become the high temperature (temperature exceeding 850"C) which starts the preignition. For this reason, as the first method, in the adiabatic compression ignition engine, a maximum rich air-fuel ratio is made thin, and, in the adiabatic spark ignition engine, the combustion average temperature in the expansion stroke is lowered by making the caliber of the venturi or the caliber of the intake pipe small, or by lowering the maximum power output with setting limits to the throttle maximum open, or by making the maximum rich air-fuel ratio thin. As the second method, a difference is prepared in the compression ratio and the expansion ratio, by making the expansion ratio larger than the compression ratio, the combustion average temperature in the expansion stroke is lowered, and an exhaust temperature is lowered at the same time. Thereby, a part of energy which had become the exhaust loss until now is recoverable. As the third method, by both methods are used together, the combustion average temperature in the expansion stroke is lowered. The cautions as the adiabatic engine are required. In the adiabatic engine, the rise time of the temperature and the pressure become early in compression for it has fallen or lost the cooling loss. If it is the same compression ratio as the conventional engine, the temperature and the pressure at the time of the end of compression will become high too much, and the preignition will be started. In order not to make this preignition start, the compression ratio needs to be lowered rather than it of the conventional engine. Moreover, in the adiabatic spark ignition engine, since the temperature of the ignition part of the spark plug becomes the highest, there is the necessity of being made not becoming the high temperature (temperature exceeding 850'C) which starts the preignition from this portion. For this reason, the plug with super cold heat range, such as an along-side-spark plug, is used, and a capacitive discharge ignition is used. The along-side-spark plug almost has an ignition part in the same plane with a metal fitting side, and its heat receive area of an insulator is very small, and it has a super cold heat range. Although it is easy to soil on the other hand for this reason, when insulation resistance falls, the capacitive discharge ignition with the very early rise time of voltage is used so that sparks may fly. It is made the structure of putting a heat resisting material on the combustion chamber surface, and placing a heat insulator between the heat resisting material and an engine base material (aluminum alloy or iron) as heat insulating with the durability and the cheapness shown in FIG. 1 or FIG. 2. In the combustion chamber, if it carries out like this, even if gas temperature changes cooling loss is fallen or lost, that much, the fuel is lessened and the fuel consumption is improved rather than the conventional engine. In the adiabatic compression ignition engine, the temperature of the combustion chamber wall is made not to become the high temperature (temperature exceeding 850C) which starts ignition simultaneously with the fuel injection, and, in the adiabatic spark ignition engine, the temperature of the combustion chamber wall is made not to become the high temperature (temperature exceeding 850'C) which starts the preignition. For this reason, as the first method, in the adiabatic compression ignition engine, a maximum rich air-fuel ratio is made thin, and, in the adiabatic spark ignition engine, the combustion average temperature in the expansion stroke is lowered by making the caliber of the venturi or the caliber of the intake pipe small, or by lowering the maximum power output with setting limits to the throttle maximum open, or by making the maximum rich air-fuel ratio thin. As the second method, a difference is prepared in the compression ratio and the expansion ratio, by making the expansion ratio larger than the compression ratio, the combustion average temperature in the expansion stroke is lowered, and an exhaust temperature is lowered at the same time. Thereby, a part of energy which had become the exhaust loss until now is recoverable. As the third method, by both methods are used together, the combustion average temperature in the expansion stroke is lowered. The cautions as the adiabatic engine are required. In the adiabatic engine, the rise time of the temperature and the pressure become early in compression for it has fallen or lost the cooling loss. If it is the same compression ratio as the conventional engine, the temperature and the pressure at the time of the end of compression will become high too much, and the preignition will be started. In order not to make this preignition start, the compression ratio needs to be lowered rather than it of the conventional engine. Moreover, in the adiabatic spark ignition engine, since the temperature of the ignition part of the spark plug becomes the highest, there is the necessity of being made not becoming the high temperature (temperature exceeding 850 0 C) which starts the preignition from this portion. For this reason, the plug with super cold heat range, such as an along-side-spark plug, is used, and a capacitive discharge ignition is used. The along-side-spark plug almost has an ignition part in the same plane with a metal fitting side, and its heat receive area of an insulator is very small, and it has a super cold heat range. Although it is easy to soil on the other hand for this reason, when insulation resistance falls, the capacitive discharge ignition with the very early rise time of voltage is used so that sparks may fly. It is made the structure of putting a heat resisting material on the combustion chamber surface, and placing a heat insulator between the heat resisting material and an engine base material (aluminum alloy or iron) as heat insulating with the durability and the cheapness shown in FIG. 1 or FIG. 2. In the combustion chamber, if it carries out like this, even if gas temperature changes 13 abruptly from several 10'C at intake to around 2000 *C at the burning maximum temperature, the heat resisting material in the combustion chamber side will turn into the shock absorbing material of the temperature change, and will make the surface temperature change of the heat insulator small. Moreover, since the heat insulator is inserted into the heat resisting material and the engine base material (aluminum alloy and iron), even if a crack arises in the heat insulator, it does not drop. It is not need strength as the heat insulator which put on the conventional combustion chamber surface, and we can use a cheap heat insulator. In this invention, because it is made not to become the high temperature which exceeds 850'C on the combustion chamber wall at the compression end, there is an advantage that the material which has durability at a low price can be used for the heat resisting material, 18-8 stainless steel as an example. Thereby, I put a heat resisting iron-base alloy (stainless steel, etc.), or a heat resisting nickel-base alloy, or a heat resisting cobalt-base alloy, as the heat resisting material on the surface of the combustion chamber wall, and I place an asbestos, or a refractory cement, or a hardened asbestos by the refractory cement, or a hardened vermiculite by the refractory cement, as the heat insulator to the inner side, there are heat resistance and adiabatic nature, and it is rich in durability while it is very cheap. Incidentally, the thermal conductivity of the refractory cement and the refractory mortar is 0.7-1.2 kcal/mhC. As another heat insulator, there are a rock wool, an alumina fiber, an almino-silicate fiber, a silica fiber, a potasium titanate whisker, and a diatomaceous earth, etc., these can be made to add and carry out the heating sintering of the refractory cement, water glass, or clay, etc., and it can be used by the ability being able to make it the stronger heat insulator. Instead of the dual structure of the heat resisting material and the heat insulator, the structure only of the heat insulator with heat resistance and strength is also possible, and because it is made not to become the high temperature which exceeds 850"C on the combustion chamber wall at the time of the compression end, a heat resisting iron-base alloy (stainless steel, etc.) and a heat resisting nickel-base alloy can be used as the heat insulator. When it sees in detail, the thermal conductivity of the silicon nitride which is a typical heat insulator of the all-in-one design ceramics engine is 14 kcal/mh"C, and the thermal conductivity of the 18-8 stainless steel which is the typical iron-base heat resisting alloy is 18 kcal/mh"C at 5001C, and the thermal conductivity of Inconel 702 (79Ni-17Cr-2.5Al-others) which is one of the nickel-base heat resisting alloy is about 17.3 kcal/mh'C at 500"C, and there are heat resistance and strength enough, and it is effective as the heat insulator. In the adiabatic reciprocating engine which cools the cylinder wall and insulates the combustion chamber side surface of the cylinder head and a piston crown from heat, usual oil can be used. In the adiabatic reciprocating engine which also insulated the cylinder wall side from heat, the temperature of the cylinder wall side which the piston moves is high, and usual oil can not be used, for it is burned out, if expensive oil for the high temperature is used, or the piston ring is made from the silicon nitride or the sialon with an expander ring of the inner side of the piston ring, it is not burned out. Moreover, in the adiabatic rotary engine which insulates only the rotor surface from heat, and cools the rotor housing, usual oil can be also used. In the adiabatic rotary engine which insulates the rotor housing and the rotor from heat, if it is made an apex seal and a side seal from the silicon nitride or a sialon, etc., it is not burned out. In the reciprocating engine, there is the distinction of the 4-stroke-cycle spark ignition engine, the 2-stroke cycle spark ignition engine, the 4-stroke-cycle compression ignition engine, and the 2-stroke cycle compression ignition engine. In the 4-stroke-cycle spark ignition engine and the 2-stroke cycle spark ignition engine, there are a system which placed a fuel injection system (or a carbureter) by the intake pipe, and a system which placed a fuel injection system by the cylinder head, and is directly injected in the combustion chamber at the compression stroke, and it is contributing to lean burning greatly in the fuel injection system which is placed by the cylinder head, and is directly injected in the combustion chamber at the compression stroke. In the adiabatic 4-stroke-cycle engine, in order to make the expansion ratio larger than the compression ratio, the early close of the intake valve is performed like FIG. 13, or the later close of the intake valve is performed like FIG. 12. Since the 2-stroke cycle engine has the expansion stroke once by the main axis 1 rotation, although it is in the tendency that the temperature of the combustion chamber of the 2 stroke cycle engine becomes high rather than it of the 4-stroke-cycle engine, the heat insulating is possible by performing positively the method of avoiding the preignition. However, in the 2-stroke cycle engine other than the system which has the intake valve and the exhaust valve to the cylinder head, and the system which has only exhaust valve to the cylinder head, because the expansion ratio cannot be made larger than the compression ratio if it remains as it is, in order to make the expansion ratio larger than the compression ratio, there is the necessity of placing a scavenging control valve or an exhaust control valve. In order to make difference in the compression ratio and the expansion ratio with the rotary engine and to enlarge the expansion ratio, it is realizable by moving an intake port to the combustion chamber side like FIG. 10 and FIG. 11. FIG. 10 is a peripheral-port type adiabatic rotary engine, and because it has moved the position of the (a) inlet port open and the (b) inlet port close to the combustion chamber side rather than the conventional rotary engine, it can make the expansion ratio larger than the compression ratio. FIG. 11 is a side-port type adiabatic rotary engine, and because it has moved the position of the (a) inlet port open and the (b) inlet port close to the combustion chamber side rather than the conventional rotary engine, it can make the expansion ratio larger than the compression ratio. It becomes easy to realize a rotary diesel engine by insulating the rotor surface from heat. This is because the fuel injection is carried out to the rotor surface on which the rotor surface became high temperature by heat insulating, and vaporization is promoted. In order to make the compression ignition of the rotary diesel engine a reality, the epitrochoid constant is made 6-8 the same as the conventional rotary engine or a little high, and a rotor recess is made the form which it burns cheerfully at the fuel injection, and capacity of the rotor recess is made small because of securing compression pressure. Because the epitrochoid constant is made 6-8 the same as the conventional rotary engine or a little high, and capacity of the rotor recess is made small, it becomes the compression ratio in which the compression ignition is possible, I explain that. The theoretical compression ratio at R/e=6 is Eth=15.6, the theoretical compression ratio at R/e=8 is Eth=20.8, and the theoretical compression ratio at R/e=10 is Eth=25.4. By making capacity of the rotor recess small, it can be made the compression ratio in which the compression ignition is possible. As the method of insulating the combustion chamber of the rotary engine, the first is a method of insulating only the rotor from heat. The second is a method of insulating the rotor and the rotor housing from heat. The third is a method of insulating the rotor, the rotor housing, and the side housing from heat. When it is insulating the surface of the rotor from heat, the heat which enters the main body of the rotor decreases very much, even if the main body of the rotor is made from the aluminum alloy, oil for the rotor cooling is fairly useful. The main body of the rotor making from the aluminum alloy is useful for lightening, and improves the performance. This invention is a new adiabatic reciprocating engine and a new adiabatic rotary engine and a new adiabatic compression ignition rotary engine which consists of the above-mentioned composition. Brief description of the drawings FIG. 1 is an adiabatic view of the adiabatic 4-stroke-cycle spark ignition engine. FIG. 2 is an adiabatic view of the adiabatic rotary engine. FIG. 3 is an explanation drawing of the heat insulating piston of the adiabatic compression ignition engine. FIG. 4 is an explanation drawing of the heat insulating rotor of the adiabatic rotary engine. FIG. 5 is an explanation drawing of the heat insulating rotor of the adiabatic rotary engine. FIG. 6 is an explanation drawing of the scavenging control valve. FIG. 7 is an explanation drawing of the exhaust control valve. FIG. 8 is an explanation drawing of the scavenging control valve and the exhaust control valve. FIG. 9 is a compression ignition rotary engine which interlocked two rotors. FIG. 10 is a position explanation drawing of the intake port in the adiabatic peripheral-port rotary engine. FIG. 11 is a position explanation drawing of the intake port in the adiabatic side-port rotary engine. FIG. 12 is each stroke explanation drawing of the intake valve early close system of the adiabatic 4-stroke-cycle engine. FIG. 13 is each stroke explanation drawing of the intake valve later-close system of the adiabatic 4-stroke-cycle engine. FIG. 14 is each stroke explanation drawing of the adiabatic 2-stroke cycle engine with the intake valve and the exhaust valve. FIG. 15 is a cross-sectional view of the adiabatic 2-stroke cycle spark ignition engine with the intake valve and the exhaust valve. FIG. 16 is each stroke explanation drawing of the adiabatic 2-stroke cycle uniflow scavenging engine which has the exhaust valve on the head. FIG. 17 is each stroke explanation drawing of the adiabatic rotary engine. FIG. 18 is each stroke explanation drawing of the adiabatic compression ignition rotary engine. Explanation of mark 1: heat resisting material 1-a: edge of the heat resisting material 1-b: a projection part of the heat resisting material 2: heat insulator 3: piston base material 4: cylinder head base material 5: valve seat 6: valve guide 7: gasket 8: cylinder liner 9: heat resisting material 9-a: edge of the heat resisting material 9-b: a projection part of the heat resisting material 10: heat insulator 11: rotor base material 12: steel plate 13: housing base material 71 14: joining metal 15: joining metal 16: spark plug 17: intake reed-valve 18: scavenging control valve 19: exhaust control valve 20: fuel injection nozzle 21: straight line intake pipe 22: fuel high-pressure device 23: scavenging pump 24: piston with concave crown 25: spark plug 26: scavenging blower 27: fuel injection nozzle Best embodiment of the invention I explain the 4-stroke-cycle adiabatic spark ignition engine of this invention. I think up an idea in order to fit the piston base material with the heat resisting material, the first method is what edge 1-a of the heat resisting material is putting in the slot of the piston base material and bending or hot-compressing for joining, the second method is what edge 1-a of the heat resisting material is bent at the beginning, and it is placed the heat insulator the inner side of the heat resisting material and cast the piston base material, like the 1-a edge of the heat resisting material of FIG. 1. And, the third method is what a projection part 1-b is given to the central part of the heat resisting material for joining like FIG. 3, and the projection part puts into a hole part of the piston base material, and the projection part unites with the piston base material, and attaches the joining metal 14, and the joining metal 14 is hot-compressed. (1-1) As shown in FIG. 1, put the heat resisting material 1, such as the heat resisting iron base alloy (chiefly stainless steel), the heat resisting nickel-base alloy, the heat resisting cobalt-base alloy, and the ceramics, on the cylinder head combustion chamber surface and the piston crown surface, and place the heat insulator 2, such as the asbestos, the refractory cement, and the ceramics, between the heat resisting material 1 and the engine base material (aluminum alloy or iron). (1-2) In the adiabatic engine, since the temperature and the pressure at the time of the end of compression become very higher than the conventional engine, make it the suitable compression ratio which lowered the compression ratio rather than the conventional engine so that the preignition may not be started. (1-3) Make a difference in the compression ratio and the expansion ratio, and lower the average combustion temperature in the expansion stroke by making the expansion ratio larger than the compression ratio, and lower the exhaust temperature alike, for the temperature of the combustion chamber wall is made not to become the high temperature (the temperature exceeds 850*C at the time of the end of compression) which starts the preignition by insulating the combustion chamber from heat. In order to make the compression ratio smaller than the expansion ratio, the early close or the later close of the intake valve is performed. Then, the combustion average temperature in the expansion stroke is lowered by making the caliber of the venturi or the caliber of the intake pipe small, setting limits to the throttle maximum open, or using together the method of making a maximum rich air-fuel ratio thin. (1-4) Use the spark plug with the super cold heat range, such as an along-side-spark plug, and use a capacitive discharge ignition. This is because the preignition will be started if it is not the plug of the high heat range since the combustion chamber surface becomes high temperature more than the conventional engine. (1-5) At the time of a maximum power output, set limits to the maximum power output so that combustion temperature may not become high too much for the heat insulating. I explain this in each stroke explanation drawing of the intake valve early close system of the 4-stroke-cycle adiabatic engine of FIG. 12. In (a) intake stroke of FIG. 12, the intake valve is opened when the piston approaches a top dead center, and the intake valve is closed before the piston approaches a bottom dead center. In (b) non-compressing stroke of FIG. 12, because the piston goes to the bottom dead center and comes back while the intake valve had been closed, it is not compressed in this stroke. In (c) compression stroke of FIG. 12, when the piston comes back to the place where the intake valve began to be closed, compression will be performed by rise of the piston. In the (d) expansion stroke of FIG. 12, when the piston approaches the top dead center, electric sparks are flown to the spark plug, and burnt combustion gas, and burning gas is expanded while the piston is going from the top dead center to near the bottom dead center. In (e) exhaust stroke of FIG. 12, when the piston comes to the bottom dead center, it is begun to open the exhaust valve and to discharge gas which finished combustion, and when the piston comes to the top dead center, the exhaust valve is closed. Moreover, there is also an intake valve later-close system as the method of making the expansion ratio larger than the compression ratio. I explain it in each stroke explanation drawing of the intake valve later-close system of the 4-stroke-cycle adiabatic engine of FIG. 13. In (a) intake stroke of FIG. 13, when the piston approaches near the top dead center, the intake valve is opened, but when the piston approaches the bottom dead center, the intake valve does not close.

In (b) non-compressing stroke of FIG. 13, while the piston is passing over the bottom dead center, the intake valve is opening, and the intake valve is closed when this stroke is finished, it is not compressed in this stroke. In (c) compression stroke of FIG. 13, since the intake valve is closed at the end of the last stroke, compression is performed in this stroke. In (d) expansion stroke of FIG. 13, when the piston approaches the top dead center, electric sparks are flown to the spark plug, and burnt combustion gas, and burning gas is expanded while the piston is going from the top dead center to near the bottom dead center. In (e) exhaust stroke of FIG. 13, when the piston comes to the bottom dead center, it is begun to open the exhaust valve and to discharge gas which finished combustion, and when the piston comes to the top dead center, the exhaust valve is closed. I explain a paper example of the 4-stroke cycle adiabatic compression ignition engine of this invention. (2-1) Put the heat resisting material, such as the heat resisting iron-base alloy (chiefly stainless steel), the heat resisting nickel-base alloy, the heat resisting cobalt-base alloy, and the ceramics, on the cylinder head combustion chamber surface and the piston crown surface, and place the heat insulator, such as the asbestos, the refractory cement, and the ceramics, between the heat resisting material and the engine base material (aluminum alloy or iron). (2-2) In the adiabatic engine, since the temperature and the pressure at the time of the end of compression become very higher than the conventional engine, make it the suitable compression ratio which lowered the compression ratio rather than the conventional engine so that the preignition may not be started. (2-3) The temperature of the combustion chamber wall is made not to become the high temperature (the temperature exceeds 850"C at the time of the end of compression) which starts the preignition by insulating the combustion chamber from heat. For this reason, by making the expansion ratio larger than the compression ratio, the combustion average temperature in the expansion stroke is lowered, and the exhaust temperature is lowered alike. Then, the combustion average temperature in the expansion stroke is lowered by using together the method of making a maximum rich air-fuel ratio thin. In order to make a big difference in the compression ratio and the expansion ratio, the early close or the later close of the intake valve is performed. (2-4) At the time of a maximum power output, set limits to the maximum power output so that combustion temperature may not become high too much for the heat insulating. It is made to operate, as shown in FIG. 12 or FIG. 13.(Of course, in the adiabatic compression ignition engine, a fuel injection valve is used instead of the spark plug.) I explain a 2-stroke cycle adiabatic spark ignition engine having the intake valve and the exhaust valve of this invention. (3-1) It has an intake valve and an exhaust valve in a cylinder head.

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(3-2) Put the heat resisting material, such as the heat resisting iron-base alloy (chiefly stainless steel), the heat resisting nickel-base alloy, the heat resisting cobalt-base alloy, and the ceramics, on the cylinder head combustion chamber surface and the piston crown surface, and place the heat insulator, such as the asbestos, the refractory cement, and the ceramics, between the heat resisting material and the engine base material (aluminum alloy or iron). (3-3) In the adiabatic engine, since the temperature and the pressure at the time of the end of compression become very higher than the conventional engine, make it the suitable compression ratio which lowered the compression ratio rather than the conventional engine so that the preignition may not be started. (3-4) The temperature of the combustion chamber wall is made not to become the high temperature (the temperature exceeds 850'C at the time of the end of compression) which starts the preignition by insulating the combustion chamber from heat. For this reason, by making the expansion ratio larger than the compression ratio, the combustion average temperature in the expansion stroke is lowered, and the exhaust temperature is lowered alike. Then, the combustion average temperature in the expansion stroke is lowered by using together the method of making a maximum rich air-fuel ratio thin. (3-5) Use the spark plug with the super cold heat range, such as the along-side-spark plug, and use the capacitive discharge ignition. (3-6) At the time of a maximum power output, set limits to the maximum power output so that combustion temperature may not become high too much for the heat insulating. I explain this in each stroke explanation drawing of the 2-stroke cycle adiabatic engine with the intake valve and the exhaust valve of FIG. 14. In (a) scavenging stroke of FIG. 14, when the piston approaches near the bottom dead center, the intake valve is also opened and the scavenging is performed. At this time, fresh-gas enters deep for the scavenging pump 23 and the linear intake pipe 21. In (b) compression stroke of FIG. 14, it compresses by closing the intake valve. And, fuel is made to inject toward the concave part of piston 24 crown from the fuel injection nozzle 20. In (c) expansion stroke of FIG. 14, when the piston approaches the top dead center, the spark is ignited and fresh-gas is burnt, and the combustion gas is expanded from the top dead center to the bottom dead center. In (d) exhaust stroke of FIG. 14, when the piston comes near the bottom dead center, it is opened the exhaust valve, and gas which finished combustion is discharged. FIG. 15 is a cross-sectional view of the 2-stroke cycle adiabatic spark ignition engine with the intake valve and the exhaust valve. As shown in FIG. 15, by giving the piston 24 with the concave crown and the straight line intake pipe 21 and the fuel injection nozzle 20 to the cylinder head, it is possible to remove the fault that a part of the fuel-air mixture escapes from the exhaust pipe side in the 2-stroke cycle engine, and to make the lean burning certainly. I I I explain a 2-stroke cycle adiabatic compression ignition engine having the intake valve and the exhaust valve of this invention. (4-1) It has an intake valve and an exhaust valve in a cylinder head. (4-2) Put the heat resisting material, such as the heat resisting iron-base alloy (chiefly stainless steel), the heat resisting nickel-base alloy, the heat resisting cobalt-base alloy, and the ceramics, on the cylinder head combustion chamber surface and the piston crown surface, and place the heat insulator, such as the asbestos, the refractory cement, and the ceramics, between the heat resisting material and the engine base material (aluminum alloy or iron). (4-3) In the adiabatic engine, since the temperature and the pressure at the time of the end of compression become very higher than the conventional engine, make it the suitable compression ratio which lowered the compression ratio rather than the conventional engine so that the preignition may not be started. (4-4) The temperature of the combustion chamber wall is made not to become the high temperature (the temperature exceeds 850*C at the time of the end of compression) which starts the preignition by insulating the combustion chamber from heat. For this reason, by making the expansion ratio larger than the compression ratio, the combustion average temperature in the expansion stroke is lowered, and the exhaust temperature is lowered alike. Then, the combustion average temperature in the expansion stroke is lowered by using together the method of making a maximum rich air-fuel ratio thin. (4-5) At the time of a maximum power output, set limits to the maximum power output so that combustion temperature may not become high too much for the heat insulating. It is made to operate, as shown in FIG. 14.(Of course, in the adiabatic compression ignition engine, a fuel injection valve is used instead of the spark plug.) I explain a 2-stroke cycle adiabatic spark ignition engine having the exhaust valve of this invention. (5-1) It has an exhaust valve in the cylinder head, and has a scavenging port near the piston bottom dead center of the cylinder wall side. (5-2) Put the heat resisting material, such as the heat resisting iron-base alloy (chiefly stainless steel), the heat resisting nickel-base alloy, the heat resisting cobalt-base alloy, and the ceramics, on the cylinder head combustion chamber surface and the piston crown surface, and place the heat insulator, such as the asbestos, the refractory cement, and the ceramics, between the heat resisting material and the engine base material (aluminum alloy or iron). (5-3) In the adiabatic engine, since the temperature and the pressure at the time of the end of compression become very higher than the conventional engine, make it the suitable compression ratio which lowered the compression ratio rather than the conventional engine so that the preignition may not be started. (5-4) Use the spark plug with the super cold heat range, such as the along-side-spark plug, and use the capacitive discharge ignition. This is because the preignition will be started if 12it is not the plug of the high heat range since the combustion chamber surface becomes high temperature more than the conventional engine. (5-5) The temperature of the combustion chamber wall is made not to become the high temperature (the temperature exceeds 850'C at the time of the end of compression) which starts the preignition by insulating the combustion chamber from heat. For this reason, by making the expansion ratio larger than the compression ratio, the combustion average temperature in the expansion stroke is lowered, and the exhaust temperature is lowered alike. Then, the combustion average temperature in the expansion stroke is lowered by using together the method of making a maximum rich air-fuel ratio thin. (5-6) At the time of a maximum power output, set limits to the maximum power output so that combustion temperature may not become high too much for the heat insulating. (5-7) Attach a scavenging pump (scavenging blower) or perform a crankcase compression so that the scavenging may be performed certainly. I explain this in each stroke explanation drawing of the 2-stroke cycle adiabatic spark ignition engine which has an exhaust valve on the head of FIG. 16. In (a) scavenging stroke of FIG. 16, when the piston comes near the bottom dead center, the scavenging port opens, and the fresh-gas which has raised pressure by the scavenging blower 26 is sent from the scavenging port in the cylinder by the scavenging blower 26, and the gas which finished combustion is exhausted from the exhaust valve. Even if the scavenging port is shut by the rise of the piston, it is continued that the gas which finished combustion is exhausted from the exhaust valve. The exhaust valve is closed after the piston moves for a while toward the top dead center. In (b) compression stroke of FIG. 16, it compresses. In (c) expansion stroke of FIG. 16, when the piston approaches near the top dead center, the spark is ignited and the fresh-gas is burnt, and the combustion gas is expanded from the top dead center to the bottom dead center. In (d) exhaust stroke of FIG. 16, when the piston approaches near the bottom dead center, it is begun to open the exhaust valve and to discharge gas which finished combustion, when the pressure in the cylinder falls a little, the scavenging port which is made near the piston bottom dead center is opened by descent of the piston. I explain a 2-stroke cycle adiabatic compression ignition engine having the exhaust valve of this invention. (6-1) It has an exhaust valve in the cylinder head, and has a scavenging port near the piston bottom dead center in the cylinder wall side. (6-2) Put the heat resisting material, such as the heat resisting iron-base alloy (chiefly stainless steel), the heat resisting nickel-base alloy, the heat resisting cobalt-base alloy, and the ceramics, on the cylinder head combustion chamber surface and the piston crown surface, and place the heat insulator, such as the asbestos, the refractory cement, and the ceramics, 13 between the heat resisting material and the engine base material (aluminum alloy or iron). (6-3) In the adiabatic engine, since the temperature and the pressure at the time of the end of compression become very higher than the conventional engine, make it the suitable compression ratio which lowered the compression ratio rather than the conventional engine so that the preignition may not be started. (6-4) The temperature of the combustion chamber wall is made not to become the high temperature (the temperature exceeds 850'C at the time of the end of compression) which starts the preignition by insulating the combustion chamber from heat. For this reason, by making the expansion ratio larger than the compression ratio, the combustion average temperature in the expansion stroke is lowered, and the exhaust temperature is lowered alike. Then, the combustion average temperature in the expansion stroke is lowered by using together the method of making a maximum rich air-fuel ratio thin. (6-5) At the time of a maximum power output, set limits to the maximum power output so that combustion temperature may not become high too much for the heat insulating. (6-6) Attach a scavenging pump or perform a crankcase compression so that the scavenging may be performed certainly. It is made to operate, as shown in FIG. 16.(Of course, in the adiabatic compression ignition engine, the fuel injection valve is used instead of the spark plug.) I explain a 2-stroke cycle adiabatic spark ignition engine having the control valve of this invention. (7-1) It has the control valve of either of a scavenging control valve, an exhaust control valve, or the scavenging and an exhaust control valve. (7-2) Put the heat resisting material, such as the heat resisting iron-base alloy (chiefly stainless steel), the heat resisting nickel-base alloy, the heat resisting cobalt-base alloy, and the ceramics, on the cylinder head combustion chamber surface and the piston crown surface, and place the heat insulator, such as the asbestos, the refractory cement, and the ceramics, between the heat resisting material and the engine base material (aluminum alloy or iron). (7-3) In the adiabatic engine, since the temperature and the pressure at the time of the end of compression become very higher than the conventional engine, make it the suitable compression ratio which lowered the compression ratio rather than the conventional engine so that the preignition may not be started. (7-4) The temperature of the combustion chamber wall is made not to become the high temperature (the temperature exceeds 850'C at the time of the end of compression) which starts the preignition by insulating the combustion chamber from heat. For this reason, by making the expansion ratio larger than the compression ratio, the combustion average temperature in the expansion stroke is lowered, and the exhaust temperature is lowered alike. Then, the combustion average temperature in the expansion stroke is lowered by using together the method of making a maximum rich air-fuel ratio thin. jL/+ (7-5) Use the spark plug with the super cold heat range, such as the along-side-spark plug, and use the capacitive discharge ignition. This is because the preignition will be started if it is not the plug of the high heat range since the combustion chamber surface becomes high temperature more than the conventional engine. (7-6) At the time of a maximum power output, set limits to the maximum power output so that combustion temperature may not become high too much for the heat insulating. (7-7) Attach a scavenging pump or perform a crankcase compression so that the scavenging may be performed certainly. I explain this in the explanation drawing of the 2-stroke cycle adiabatic spark ignition engine with the scavenging control valve of FIG. 16. As shown in FIG. 6, the scavenging port is divided into the upper port and the lower port, and the rotary valve (control valve) is put in the upper port. In (a) exhaust stroke of FIG. 6, when the piston comes near the bottom dead center, the exhaust port opens first and the gas which finished combustion is discharged. In (b) scavenging stroke 1 of FIG. 6, when the pressure in the cylinder falls a little, the scavenging lower port which is made near the piston bottom dead center is opened by a descent of the piston, and the fresh-gas which has raised pressure rather than the cylinder pressure by the crankcase compression is sent from the opening scavenging port in the cylinder, and the gas which finished combustion is exhausted from the exhaust port. In (c) scavenging stroke 2 of FIG. 6, even if the scavenging lower port is closed by a rise of the piston, the rotary valve (control valve) of the scavenging upper port is opened before the scavenging lower port closes, and the rotary valve (control valve) of the scavenging upper port is closed when the piston goes up a distance from the bottom dead center, on this account, even if the piston goes up, compression is not performed, but it can be made the expansion ratio larger than the compression ratio. In the compression stroke, when the gas in the cylinder is replaced the gas which finished combustion with fresh-gas, it close the control valve and it compresses. Simultaneously, it becomes negative pressure in the crankcase, intake reed-valve 17 opens, and fresh-gas is inhaled. In the expansion stroke, when the piston approaches near the top dead center, the spark is ignited and fresh-gas is burnt, and the combustion gas is expanded from the top dead center to the bottom dead center. Simultaneously, pressure is applied in the crankcase, the intake reed-valve 17 is closed, and the fresh-gas in the crankcase is compressed. I explain the 2-stroke cycle adiabatic spark ignition engine with the exhaust control valve in the explanation drawing of the 2-stroke cycle adiabatic spark ignition engine with the exhaust control valve of FIG. 7. As shown in FIG. 7, the exhaust port is divided into the upper port and the lower port, and the rotary valve (control valve) is put in the upper port. I s- In (a) exhaust stroke of FIG. 7, when the piston comes near the bottom dead center, the exhaust lower port opens first and the gas which finished combustion is discharged. In (b) scavenging stroke 1 of FIG. 7, when the pressure in the cylinder falls a little, the scavenging port which is made near the piston bottom dead center is opened by a descent of the piston, and the fresh-gas which has raised pressure rather than the cylinder pressure by the crankcase compression is sent from the opening scavenging port in the cylinder, and the gas which finished combustion is exhausted from the exhaust lower port. In (c) scavenging stroke 2 of FIG. 7, even if the scavenging port and the exhaust lower port is closed by the farther rise of the piston, it is continued that the gas which finished combustion is exhausted from the rotary valve (control valve). Because the rotary valve (control valve) of the exhaust upper port is opened before the exhaust lower port closes, and the rotary valve (control valve) of the exhaust upper port is closed when the piston goes up a distance from the bottom dead center, even if the piston goes up, compression is not performed, but the expansion ratio can be made larger than the compression ratio. In the compression stroke, when the gas in the cylinder is replaced the gas which finished combustion with fresh-gas, it close the control valve and it compresses. Simultaneously, it becomes negative pressure in the crankcase, intake reed-valve 17 opens, and fresh-gas is inhaled. In the expansion stroke, when the piston approaches near the top dead center, the spark is ignited and fresh-gas is burnt, and the combustion gas is expanded from the top dead center to the bottom dead center. Simultaneously, pressure is applied in the crankcase, the intake reed-valve 17 is closed, and the fresh-gas in the crankcase is compressed. I explain the 2-stroke cycle adiabatic spark ignition engine with the scavenging control valve and the exhaust control valve in the explanation drawing of the 2-stroke cycle adiabatic spark ignition engine with the scavenging control valve and the exhaust control valve of FIG. 8. As shown in FIG. 8, the scavenging port and the exhaust port are respectively divided into the upper port and the lower port, and the rotary valve (control valve) is respectively put in each upper port. In (a) exhaust stroke of FIG. 8, when the piston comes near the bottom dead center, the exhaust lower port opens first and the gas which finished combustion is discharged. In (b) scavenging stroke 1 of FIG. 8, when the pressure in the cylinder falls a little, the scavenging lower port which is made near the piston bottom dead center is opened by a descent of the piston, and the fresh-gas which has raised pressure rather than the cylinder pressure by the crankcase compression is sent from the opening scavenging port in the cylinder, and the gas which finished combustion is exhausted from the exhaust lower port. In (c) scavenging stroke 2 of FIG. 8, even if the scavenging lower port is closed by the further rise of the piston, the scavenging is continued, for the rotary valve (control valve) of the

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scavenging upper port is opened, and even if the exhaust lower port is closed by the further rise of the piston, it is also continued that the gas which finished combustion is exhausted, for the rotary valve (control valve) of the exhaust upper port is opened. The rotary valve (control valve) of the scavenging upper port is opened before the scavenging lower port closes, and the rotary valve (control valve) of the scavenging upper port is closed when the piston goes up a distance from the bottom dead center, and the rotary valve (control valve) of the exhaust upper port is opened before the exhaust lower port closes, and the rotary valve (control valve) of the exhaust upper port is closed when the piston goes up a distance from the bottom dead center, on those account, even if the piston goes up, compression is not performed, but the expansion ratio can be made larger than the compression ratio. In the compression stroke, when the gas in the cylinder is replaced the gas which finished combustion with fresh-gas, it close the control valve and it compresses. Simultaneously, it becomes negative pressure in the crankcase, intake reed-valve 17 opens, and fresh-gas is inhaled. In the expansion stroke, when the piston approaches near the top dead center, the spark is ignited and fresh-gas is burnt, and the combustion gas is expanded from the top dead center to the bottom dead center. Simultaneously, pressure is applied in the crankcase, the intake reed-valve 17 is closed, and the fresh-gas in the crankcase is compressed. I explain the 2-stroke cycle adiabatic compression ignition engine having the control valve of this invention. It is made to operate like FIG. 6, FIG. 7, and FIG. 8 as an operation.(Of course, in the adiabatic compression ignition engine, a fuel injection valve is used instead of the spark plug.) (8-1) It has the control valve of either of a scavenging control valve, an exhaust control valve, or the scavenging and an exhaust control valve. (8-2) Put the heat resisting material, such as the heat resisting iron-base alloy (chiefly stainless steel), the heat resisting nickel-base alloy, the heat resisting cobalt-base alloy, and the ceramics, on the cylinder head combustion chamber surface and the piston crown surface, and place the heat insulator, such as the asbestos, the refractory cement, and the ceramics, between the heat resisting material and the engine base material (aluminum alloy or iron). (8-3) In the adiabatic engine, since the temperature and the pressure at the time of the end of compression become very higher than the conventional engine, make it the suitable compression ratio which lowered the compression ratio rather than the conventional engine so that the preignition may not be started. (8-4) The temperature of the combustion chamber wall is made not to become the high temperature (the temperature exceeds 850'C at the time of the end of compression) which starts the preignition by insulating the combustion chamber from heat. For this reason, by making the expansion ratio larger than the compression ratio, the combustion average 17 temperature in the expansion stroke is lowered, and the exhaust temperature is lowered alike. Then, the combustion average temperature in the expansion stroke is lowered by using together the method of making a maximum rich air-fuel ratio thin. (8-5) At the time of a maximum power output, set limits to the maximum power output so that combustion temperature may not become high too much for the heat insulating. (8-6) Attach a scavenging pump (scavenging blower) or perform a crankcase compression so that the scavenging may be performed certainly. Paper example 1 It is an adiabatic reciprocating engine which is made same as the engine of the written best embodiment of the invention except that it is not made a difference in the expansion ratio and the compression ratio, and is not enlarged the expansion ratio, which is made a maximum rich air-fuel ratio thin, is made the caliber of the venturi or the caliber of the intake pipe small in the spark ignition engine, or is set limits to the throttle maximum open, for the combustion chamber dose not become high temperature too much, on the lines of the engine of the written best embodiment of the invention. Paper example 2 It is an adiabatic reciprocating engine which is made same as the engine of the written best embodiment of the invention except that it is not insulated the cylinder head combustion chamber side from heat, which is put the heat resisting material, such as the heat resisting iron-base alloy (chiefly stainless steel), the heat resisting nickel-base alloy, the heat resisting cobalt-base alloy, and the ceramics, only on the piston crown surface, and is placed the heat insulator, such as the asbestos, the refractory cement, and the ceramics, between the heat resisting material and the engine base material (aluminum alloy or iron) on the lines of the engine of the written best embodiment of the invention. Paper example 3 It is an adiabatic reciprocating engine which is made same as the engine of the paper example 1 except that it is not insulated the cylinder head combustion chamber side from heat, which is put the heat resisting material, such as the heat resisting iron-base alloy (chiefly stainless steel), the heat resisting nickel-base alloy, the heat resisting cobalt-base alloy, and the ceramics, only on the piston crown surface, and is placed the heat insulator, such as the asbestos, the refractory cement, and the ceramics, between the heat resisting material and the engine base material (aluminum alloy or iron) on the lines of the engine of the paper example 1. Paper example 4 It is an adiabatic reciprocating engine which is made same as the engine of the written best embodiment of the invention except that it is not insulated the piston crown surface from heat, which is put the heat resisting material, such as the heat resisting iron-base alloy (chiefly stainless steel), the heat resisting nickel-base alloy, the heat resisting cobalt-base alloy, and the ceramics, only on the piston crown surface, and is placed the heat insulator, such as the asbestos, the refractory cement, and the ceramics, between the heat resisting material and the engine base material (aluminum alloy or iron) on the lines of the engine of the written best embodiment of the invention. Paper example 5 It is the adiabatic reciprocating engine which is made same as the engine of the paper example 1 except that it is not insulated the piston crown surface from heat, which is put the heat resisting material, such as the heat resisting iron-base alloy (chiefly stainless steel), the heat resisting nickel-base alloy, the heat resisting cobalt-base alloy, and the ceramics, only on the cylinder head combustion chamber side, and is placed the heat insulator, such as the asbestos, the refractory cement, and the ceramics, between the heat resisting material and the engine base material (aluminum alloy or iron) on the lines of the engine of the paper example 1. Paper example 6 It is the adiabatic reciprocating engine which is made same as the engine of the written best embodiment of the invention except that it is insulated the cylinder wall surface in addition to the cylinder head combustion chamber side and the piston crown surface, which is put the heat resisting material, such as the heat resisting iron-base alloy (chiefly stainless steel), the heat resisting nickel-base alloy, the heat resisting cobalt-base alloy, and the ceramics, on the cylinder wall surface and the cylinder head combustion chamber side and the piston crown surface, and is placed the heat insulator, such as the asbestos, the refractory cement, and the ceramics, between the heat resisting material and the engine base material (aluminum alloy or iron) on the lines of the engine of the written best embodiment of the invention. Paper example 7 It is the adiabatic reciprocating engine which is made same as the engine of the paper example 1 except that it is insulated the cylinder wall surface in addition to the cylinder head combustion chamber side and the piston crown surface, which is put the heat resisting material, such as the heat resisting iron-base alloy (chiefly stainless steel), the heat resisting nickel-base alloy, the heat resisting cobalt-base alloy, and the ceramics, on the cylinder wall side and the cylinder head combustion chamber side and the piston crown surface, and is placed the heat insulator, such as the asbestos, the refractory cement, and the ceramics, between the heat resisting material and the engine base material (aluminum alloy or iron) on the lines of the engine of the paper example 1. Paper example 8 It is the adiabatic reciprocating engine which is made same as the engine of the written best embodiment of the invention except that it is put the heat insulator having heat resistant ability and having strength and having a certain amount of the adiabatic performance instead of the heat resisting material in the engine of the written best embodiment of the invention, which is put the heat insulator, such as the heat resisting iron-base alloy (chiefly stainless steel), the heat resisting nickel-base alloy, and the ceramics, on the surface. Paper example 9 It is the adiabatic reciprocating engine which is made same as the engine of the paper example 1 except that it is put the heat insulator having heat resistant ability and having strength and having a certain amount of the adiabatic performance instead of the heat resisting material in the engine of the paper example 1, which is put the heat insulator, such as the heat resisting iron-base alloy (chiefly stainless steel), the heat resisting nickel-base alloy, and the ceramics, on the surface. Paper example 10 It is the adiabatic reciprocating engine which is made same as the engine of the paper example 2 except that it is put the heat insulator having heat resistant ability and having strength and having a certain amount of the adiabatic performance instead of the heat resisting material in the engine of the paper example 2, which is put the heat insulator, such as the heat resisting iron-base alloy (chiefly stainless steel), the heat resisting nickel-base alloy, and the ceramics, on the surface. Paper example 11 It is the adiabatic reciprocating engine which is made same as the engine of the paper example 3 except that it is put the heat insulator having heat resistant ability and having strength and having a certain amount of the adiabatic performance instead of the heat resisting material in the engine of the paper example 3, which is put the heat insulator, such as the heat resisting iron-base alloy (chiefly stainless steel), the heat resisting nickel-base alloy, and the ceramics, on the surface. Paper example 12 It is the adiabatic reciprocating engine which is made same as the engine of the paper example 4 except that it is put the heat insulator having heat resistant ability and having strength and having a certain amount of the adiabatic performance instead of the heat resisting material in the engine of the paper example 4, which is put the heat insulator, such as the heat resisting iron-base alloy (chiefly stainless steel), the heat resisting nickel-base alloy, and the ceramics, on the surface. Paper example 13 It is the adiabatic reciprocating engine which is made same as the engine of the paper example 5 except that it is put the heat insulator having heat resistant ability and having strength and having a certain amount of the adiabatic performance instead of the heat resisting material in the engine of the paper example 5, which is put the heat insulator, such as the heat resisting iron-base alloy (chiefly stainless steel), the heat resisting nickel-base alloy, and the ceramics, on the surface. Paper example 14 Q_ C It is the adiabatic reciprocating engine which is made same as the engine of the paper example 6 except that it is put the heat insulator having heat resistant ability and having strength and having a certain amount of the adiabatic performance instead of the heat resisting material in the engine of the paper example 6, which is put the heat insulator, such as the heat resisting iron-base alloy (chiefly stainless steel), the heat resisting nickel-base alloy, and the ceramics, on the surface. Paper example 15 It is the adiabatic reciprocating engine which is made same as the engine of the paper example 7 except that it is put the heat insulator having heat resistant ability and having strength and having a certain amount of the adiabatic performance instead of the heat resisting material in the engine of the paper example 7, which is put the heat insulator, such as the heat resisting iron-base alloy (chiefly stainless steel), the heat resisting nickel-base alloy, and the ceramics, on the surface. Paper example 16 I explain an adiabatic rotary engine of this invention. In the many methods of attaching the heat resisting material on the rotor base material, the first method is that edge 9-a of the heat resisting material is bent or is carried out heating compression like the rotor of FIG. 2, and is put in the slot of the rotor base material 11 and is joined, the second method is that edge 9-a of the heat resisting material is bent first and is placed a heat insulator 10 on the inside after bending and is cast with the rotor base material 11. And the third method is that a heat resisting material 9 is surrounded the combustion chamber side surface of the rotor, and is placed the heat insulator 10 on the inside, and is cast with the rotor base material, as shown in FIG. 4. And fourth method is that the projection 9-b for join is given to the central part of the heat resisting material, and is put into a joining hole of the rotor base material, and the joining metal 15 is put in it and is heat-compressed for join, as shown in the left view of the FIG. 5, and the fifth method is that the projection for join is given to the central part of the heat resisting material, and is put into the joining hole of the rotor base material, and is fixed with a fixing screw (or spring pin), as shown in the right view of the FIG. 5. In FIG. 2, FIG. 4, and FIG. 5, although edge 9-a of the heat resisting material touches an apex seal, an influence of the temperature of the heat resisting material can be lost by a little separating from the apex seal. (1) As shown in FIG. 2, put the heat resisting material, such as the heat resisting iron-base alloy (chiefly stainless steel), the heat resisting nickel-base alloy, the heat resisting cobalt base alloy, and the ceramics, on the rotor surface, and place the heat insulator, such as the asbestos, the refractory cement, and the ceramics, between the heat resisting material and the engine base material (aluminum alloy or iron). (2) In the adiabatic engine, since the temperature and the pressure at the time of the end of compression become very higher than the conventional engine, make it the suitable compression ratio which lowered the compression ratio rather than it of the conventional engine so that the preignition may not be started. (3) Make a difference in the compression ratio and the expansion ratio, and lower the combustion average temperature in the expansion stroke by making the expansion ratio larger than the compression ratio, and lower the exhaust temperature alike, for the temperature of the combustion chamber wall is made not to become the high temperature (the temperature exceeds 850'C at the time of the end of compression) which starts the preignition by insulating the combustion chamber from heat. In order to make a difference in the compression ratio and the expansion ratio and to enlarge the expansion ratio, the capacity of the compression stroke is made smaller than the capacity of the expansion stroke. For this reason, the position of an intake port is shifted to a combustion chamber side like FIG. 10 and FIG. 11, and the capacity of the compression stroke is limited. The epitrochoid constant is assumed to be the one near the conventional rotary engine or a little large one. (If the epitrochoid constant is enlarged too much for enlarging the expansion ratio, an eccentric shaft can do nothing but be relatively thinned and be become impossible to bear load.) Then, the combustion average temperature in the expansion stroke is lowered by making the caliber of the venturi and the caliber of the intake pipe small, setting limits to the throttle maximum open, or using together the method of making a maximum rich air-fuel ratio thin. (4) Make the rotor recess (the capacity of the hollow of the rotor) small so that a suitable compression ratio may be obtained. (5) Use the spark plug with the super cold heat range, such as the along-side-spark plug, and use the capacitive discharge ignition. This is because the preignition will be started if it is not the plug of the high heat range because the combustion chamber surface becomes high temperature more than the conventional engine. (6) At the time of a maximum power output, set limits to the maximum power output so that combustion temperature may not become high too much for the heat insulating. I explain this in each stroke explanation drawing of the adiabatic rotary engine of FIG. 17. In (a) intake stroke of FIG. 17, intake is done. In (b) compression stroke of FIG. 17, intake gas is compressed. In (c) expansion stroke of FIG. 17, a spark flies to the spark plug, the compressed gas burns and expands, and power is taken out. In (d) exhaust stroke of FIG. 17, it exhausts. Paper example 17 It is an adiabatic rotary engine which is made same as the engine of the paper example 16 except that it is not made a difference in the expansion ratio and the compression ratio and is not enlarged the expansion ratio, which is made a maximum rich air-fuel ratio thin, is made the caliber of the venturi or the caliber of the intake pipe small, or is set limits to the throttle maximum open, for the combustion chamber dose not become high temperature too much, on the lines of the -engine of the paper example 16. Paper example 18 It is an adiabatic rotary engine which is made same as the engine of the paper example 16 except that it is insulated the rotor-housing combustion chamber side in addition to the rotor surface, which is put the heat resisting material, such as the heat resisting iron-base alloy (chiefly stainless steel), the heat resisting nickel-base alloy, the heat resisting cobalt-base alloy, and the ceramics, on the rotor-housing combustion chamber side and the rotor surface, and is placed the heat insulator, such as the asbestos, the refractory cement, and the ceramics, between the heat resisting material and the engine base material (aluminum alloy or iron) on the lines of the engine of the paper example 16. Paper example 19 It is an adiabatic rotary engine which is made same as the engine of the paper example 17 except that it is insulated the rotor-housing combustion chamber side in addition to the rotor surface, which is put the heat resisting material, such as the heat resisting iron-base alloy (chiefly stainless steel), the heat resisting nickel-base alloy, the heat resisting cobalt-base alloy, and the ceramics, on the rotor-housing combustion chamber side and the rotor surface, and is placed the heat insulator, such as the asbestos, the refractory cement, and the ceramics, between the heat resisting material and the engine base material (aluminum alloy or iron) on the lines of the engine of the paper example 17. Paper example 20 It is an adiabatic rotary engine which is made same as the engine of the paper example 16 except that it is insulated the rotor-housing combustion chamber side and the side housing in addition to the rotor surface, which is put the heat resisting material, such as the heat resisting iron-base alloy (chiefly stainless steel), the heat resisting nickel-base alloy, the heat resisting cobalt-base alloy, and the ceramics, on the rotor-housing combustion chamber side and the side housing and the rotor surface, and is placed the heat insulator, such as the asbestos, the refractory cement, and the ceramics, between the heat resisting material and the engine base material (aluminum alloy or iron) on the lines of the engine of the paper example 16. Paper example 21 It is an adiabatic rotary engine which is made same the engine of the paper example 17 except that it is insulated the rotor-housing combustion chamber side and the side housing in addition to the rotor surface, which is put the heat resisting material, such as the heat resisting iron-base alloy (chiefly stainless steel), the heat resisting nickel-base alloy, the heat resisting cobalt-base alloy, and the ceramics, on the rotor-housing combustion chamber side and the side housing and the rotor surface, and is placed the heat insulator, such as the asbestos, the refractory cement, and the ceramics, between the heat resisting material and the engine base material (aluminum alloy or iron) on the lines of the engine of the paper example 17. Paper example 22 It is an adiabatic rotary engine which is made same as the engine of the paper example 16 except that it is put a heat insulator having heat resistant ability and having strength and having a certain amount of the adiabatic performance instead of the heat resisting material in the engine of the paper example 16, which is put the heat insulator, such as the heat resisting iron-base alloy (chiefly stainless steel), the heat resisting nickel-base alloy, and the ceramics, on the surface. Paper example 23 It is an adiabatic rotary engine which is made same as the engine of the paper example 17 except that it is put the heat insulator having heat resistant ability and having strength and having a certain amount of the adiabatic performance instead of the heat resisting material in the engine of the paper example 17, which is put the heat insulator, such as the heat resisting iron-base alloy (chiefly stainless steel), the heat resisting nickel-base alloy, and the ceramics, on the surface. Paper example 24 It is an adiabatic rotary engine which is made same as the engine of the paper example 18 except that it is put the heat insulator having heat resistant ability and having strength and having a certain amount of the adiabatic performance instead of the heat resisting material in the engine of the paper example 18, which is put the heat insulator, such as the heat resisting iron-base alloy (chiefly stainless steel), the heat resisting nickel-base alloy, and the ceramics, on the surface. Paper example 25 It is an adiabatic rotary engine which is made same as the engine of the paper example 19 except that it is put the heat insulator having the heat-resistant ability and having strength and having a certain amount of the adiabatic performance instead of the heat resisting material in the engine of the paper example 19, which is put the heat insulator, such as the heat resisting iron-base alloy (chiefly stainless steel), the heat resisting nickel-base alloy, and the ceramics, on the surface. Paper example 26 It is an adiabatic rotary engine which is made same as the engine of the paper example 20 except that it is put the heat insulator having the heat-resistant ability and having strength and having a certain amount of the adiabatic performance instead of the heat resisting material in the engine of the paper example 20, which is put the heat insulator, such as the heat resisting iron-base alloy (chiefly stainless steel), the heat resisting nickel-base alloy, and the ceramics, on the surface.

Paper example 27 It is an adiabatic rotary engine which is made same as the engine of the paper example 21 except that it is put the heat insulator having the heat-resistant ability and having strength and having a certain amount of the adiabatic performance instead of the heat resisting material in the engine of the paper example 21, which is put the heat insulator, such as the heat resisting iron-base alloy (chiefly stainless steel), the heat resisting nickel-base alloy, and the ceramics, on the surface. Paper example 28 I explain an adiabatic compression ignition rotary engine of this invention. (1) Put the heat resisting material, such as the heat resisting iron-base alloy (chiefly stainless steel), the heat resisting nickel-base alloy, the heat resisting cobalt-base alloy, and the ceramics, on the rotor surface, and place the heat insulator, such as the asbestos, the refractory cement, and the ceramics, between the heat resisting material and the engine base material (aluminum alloy or iron). (2) In the adiabatic engine, since the temperature and the pressure at the time of the end of compression become very high, make it a suitable compression ratio so that the preignition may not be started. (3) Make a difference in the compression ratio and the expansion ratio, and lower the combustion average temperature in the expansion stroke by making the expansion ratio larger than the compression ratio, and lower the exhaust temperature alike, for the temperature of the combustion chamber wall is made not to become the high temperature (the temperature exceeds 850*C at the time of the end of compression) which starts the preignition by insulating the combustion chamber from heat. In order to make a difference in the compression ratio and the expansion ratio and to enlarge the expansion ratio, the capacity of the compression stroke is made smaller than the capacity of the expansion stroke. For this reason, a position of the intake port is shifted to the combustion chamber side like FIG. 10 and FIG. 11, and a capacity of the compression stroke is limited. The epitrochoid constant is assumed to be the one near the conventional rotary engine or a little large one. (If the epitrochoid constant is enlarged too much for enlarging the expansion ratio, the eccentric shaft can do nothing but be relatively thinned and be become impossible to bear load.) Then, the combustion average temperature in the expansion stroke is lowered by making the caliber of the venturi and the caliber of the intake pipe small, setting limits to the throttle maximum open, or using together the method of making a maximum rich air-fuel ratio thin. (4) Make the rotor recess (the capacity of the hollow of the rotor) small so that a suitable compression ratio may be obtained. (5) At the time of a maximum power output, set limits to the maximum power output so that combustion temperature may not become high too much for the heat insulating.

I explain this in each stroke explanation drawing of the adiabatic compression ignition rotary engine of FIG. 18. In (a) intake stroke of FIG. 18, intake is done. In (b) compression stroke of FIG. 18, intake gas is compressed. Fuel is injected towards the rotor recess (the capacity of the hollow of the rotor) by the fuel injection nozzle 27. In (c) expansion stroke of FIG. 18, the compressed gas burns and expands, and power is taken out. In (d) exhaust stroke of FIG. 18, it exhausts. Paper example 29 It is an adiabatic compression ignition rotary engine which is made same as the engine of the paper example 28 except that it is not made a difference in the expansion ratio and the compression ratio and is not enlarged the expansion ratio, but is made a maximum rich air fuel ratio thin, for the combustion chamber dose not become high temperature too much. Paper example 30 It is an adiabatic compression ignition rotary engine which is made same as the engine of the paper example 28 except that it is insulated the rotor-housing combustion chamber side in addition to the rotor surface, which is put the heat resisting material, such as the heat resisting iron-base alloy (chiefly stainless steel), the heat resisting nickel-base alloy, the heat resisting cobalt-base alloy, and the ceramics, on the rotor-housing combustion chamber side and the rotor surface, and is placed the heat insulator, such as the asbestos, the refractory cement, and the ceramics, between the heat resisting material and the engine base material (aluminum alloy or iron) on the lines of the engine of the paper example 28. Paper example 31 It is an adiabatic compression ignition rotary engine which is made same as the engine of the paper example 29 except that it is insulated the rotor-housing combustion chamber side in addition to the rotor surface, which is put the heat resisting material, such as the heat resisting iron-base alloy (chiefly stainless steel), the heat resisting nickel-base alloy, the heat resisting cobalt-base alloy, and the ceramics, on the rotor-housing combustion chamber side and the rotor surface, and is placed the heat insulator, such as the asbestos, the refractory cement, and the ceramics, between the heat resisting material and the engine base material (aluminum alloy or iron) on the lines of the engine of the paper example 29. Paper example 32 It is an adiabatic compression ignition rotary engine which is made same as the engine of the paper example 28 except that it is insulated the rotor-housing combustion chamber side and the side housing in addition to the rotor surface, which is put the heat resisting material, such as the heat resisting iron-base alloy (chiefly stainless steel), the heat resisting nickel base alloy, the heat resisting cobalt-base alloy, and the ceramics, on the rotor-housing combustion chamber side and the side housing and the rotor surface, and is placed the heat insulator, such as the asbestos, the refractory cement, and the ceramics, between the heat resisting material and the engine base material (aluminum alloy or iron) on the lines of the engine of the paper example 28. Paper example 33 It is an adiabatic compression ignition rotary engine which is made same as the engine of the paper example 29 except that it is insulated the rotor-housing combustion chamber side and the side housing in addition to the rotor surface, which is put the heat resisting material, such as the heat resisting iron-base alloy (chiefly stainless steel), the heat resisting nickel base alloy, the heat resisting cobalt-base alloy, and the ceramics, on the rotor-housing combustion chamber side and the side housing and the rotor surface, and is placed the heat insulator, such as the asbestos, the refractory cement, and the ceramics, between the heat resisting material and the engine base material (aluminum alloy or iron) on the lines of the engine of the paper example 29. Paper example 34 It is an adiabatic compression ignition rotary engine which is made same as the engine of the paper example 28 except that it is put the heat insulator having heat resistant ability and having strength and having a certain amount of the adiabatic performance instead of the heat resisting material in the engine of the paper example 28, which is put the heat insulator, such as the heat resisting iron-base alloy (chiefly stainless steel), the heat resisting nickel base alloy, and the ceramics, on the surface. Paper example 35 It is an adiabatic compression ignition rotary engine which is made same as the engine of the paper example 29 except that it is put the heat insulator having the heat-resistant ability and having strength and having a certain amount of the adiabatic performance instead of the heat resisting material in the engine of the paper example 29, which is put the heat insulator, such as the heat resisting iron-base alloy (chiefly stainless steel), the heat resisting nickel base alloy, and the ceramics, on the surface. Paper example 36 It is an adiabatic compression ignition rotary engine which is made same as the engine of the paper example 30 except that it is put the heat insulator having the heat-resistant ability and having strength and having a certain amount of the adiabatic performance instead of the heat resisting material in the engine of the paper example 30, which is put the heat insulator, such as the heat resisting iron-base alloy (chiefly stainless steel), the heat resisting nickel base alloy, and the ceramics, on the surface. Paper example 37 It is an adiabatic compression ignition rotary engine which is made same as the engine of the paper example 31 except that it is put the heat insulator having the heat-resistant ability and having strength and having a certain amount of the adiabatic performance instead of the heat resisting material in the engine of the paper example 31, which is put the heat insulator, such as the heat resisting iron-base alloy (chiefly stainless steel), the heat resisting nickel base alloy, and the ceramics, on the surface. Paper example 38 It is an adiabatic compression ignition rotary engine which is made same as the engine of the paper example 32 except that it is put the heat insulator having the heat-resistant ability and having strength and having a certain amount of the adiabatic performance instead of the heat resisting material in the engine of the paper example 32, which is put the heat insulator, such as the heat resisting iron-base alloy (chiefly stainless steel), the heat resisting nickel base alloy, and the ceramics, on the surface. Paper example 39 It is an adiabatic compression ignition rotary engine which is made same as the engine of the paper example 33 except that it is put the heat insulator having the heat-resistant ability and having strength and having a certain amount of the adiabatic performance instead of the heat resisting material in the engine of the paper example 33, which is put the heat insulator, such as the heat resisting iron-base alloy (chiefly stainless steel), the heat resisting nickel base alloy, and the ceramics, on the surface. Availability on industry The adiabatic engine becomes possible also with the spark ignition type engine such as the gasoline engine, the cooling device can be made small or can be lost, and thermal efficiency can be raised greatly. Moreover, because the combustion chamber wall surface can be made to the high temperature rather than the conventional engine, hydrocarbon in exhaust gas can be decreased. And as compared with the conventional adiabatic engine, it can be made very cheaply, and excels also in durability. This adiabatic engine can greatly improve the problem that the torque becomes unstable and the ignition and combustion becomes unstable when the conventional spark ignition type engine is operated in a thin air-fuel ratio. It can be lowered that the pollution matter density in the exhaust gas of the conventional diesel engine was high. It was difficult that the conventional rotary engine is made to the diesel engine, for the wall surface temperature at the time of combustion was low, but it is easy that the rotary engine is made to the diesel engine by this adiabatic compression ignition rotary engine, for the rotor is insulated and the rotor surface temperature can be raised. The rotor main body of the conventional rotary engine was able to use only the cast iron goods. But it is enabled to use a lightweight aluminum alloy for the rotor main body, and a performance can be raised in this adiabatic engine, because the heat which enters the rotor main body is decreased very much by insulating the rotor surface from heat, and oil for the

Claims (80)

1. It is an adiabatic reciprocating engine which is put a heat resisting material, such as a heat resisting iron-base alloy, a heat resisting nickel-base alloy, a heat resisting cobalt-base alloy, and a ceramics, on the cylinder head combustion chamber side and the piston crown surface, and is placed a heat insulator, such as an asbestos, a refractory cement, and a ceramics, between the heat resisting material and the engine base material, and, which is made a difference in an expansion ratio and a compression ratio, and is enlarged the expansion ratio, which is made a maximum rich air-fuel ratio thin, is made the caliber of a venturi or the caliber of an intake pipe small in a spark ignition engine, or is set limits to the throttle maximum open, for a combustion chamber dose not become high temperature too much.

2. It is an adiabatic reciprocating engine which is made same as the engine of claim 1 except that it is not made a difference in the expansion ratio and the compression ratio, and is not enlarged the expansion ratio, which is made a maximum rich air-fuel ratio thin, is made the caliber of the venturi or the caliber of the intake pipe small in the spark ignition engine, or is set limits to the throttle maximum open, for the combustion chamber dose not become high temperature too much.

3. It is an adiabatic reciprocating engine which is made same as the engine of claim 1 except that it is not insulated the cylinder head combustion chamber side from heat, which is put the heat resisting material, such as the heat resisting iron-base alloy, the heat resisting nickel-base alloy, the heat resisting cobalt-base alloy, and the ceramics, only on the piston crown surface, and is placed the heat insulator, such as the asbestos, the refractory cement, and the ceramics, between the heat resisting material and the engine base material.

4. It is an adiabatic reciprocating engine which is made same as the engine of claim 2 except that it is not insulated the cylinder head combustion chamber side from heat, which is put the heat resisting material, such as the heat resisting iron-base alloy, the heat resisting nickel-base alloy, the heat resisting cobalt-base alloy, and the ceramics, only on the piston crown surface, and is placed the heat insulator, such as the asbestos, the refractory cement, and the ceramics, between the heat resisting material and the engine base material.

5. It is an adiabatic reciprocating engine which is made same as the engine of claim 1 except that it is not insulated the piston crown surface from heat, which is put the heat resisting material, such as the heat resisting iron-base alloy, the heat resisting nickel-base alloy, the heat resisting cobalt-base alloy, and the ceramics, only on the cylinder head combustion chamber side, and is placed the heat insulator, such as the asbestos, the refractory cement, and the ceramics, between the heat resisting material and the engine base material.

6. It is an adiabatic reciprocating engine which is made same as the engine of claim 2 except that it is not insulated the piston crown surface from heat, which is put the heat resisting material, such ais the heat resisting iron-base alloy, the heat resisting nickel-base alloy, the heat resisting cobalt-base alloy, and the ceramics, only on the cylinder head combustion chamber side, and is placed the heat insulator, such as the asbestos, the refractory cement, and the ceramics, between the heat resisting material and the engine base material.

7. It is an adiabatic reciprocating engine which is made same as the engine of claim 1 except that it is insulated the cylinder wall surface in addition to the cylinder head combustion chamber side and the piston crown surface, which is put the heat resisting material, such as the heat resisting iron-base alloy, the heat resisting nickel-base alloy, the heat resisting cobalt-base alloy, and the ceramics, on the cylinder wall surface and the cylinder head combustion chamber side and the piston crown surface, and is placed the heat insulator, such as the asbestos, the refractory cement, and the ceramics, between the heat resisting material and the engine base material.

8. It is an adiabatic reciprocating engine which is made same as the engine of claim 2 except that it is insulated the cylinder wall surface in addition to the cylinder head combustion chamber side and the piston crown surface, which is put the heat resisting material, such as the heat resisting iron-base alloy, the heat resisting nickel-base alloy, the heat resisting cobalt-base alloy, and the ceramics, on the cylinder wall surface and the cylinder head combustion chamber side and the piston crown surface, and is placed the heat insulator, such as the asbestos, the refractory cement, and the ceramics, between the heat resisting material and the engine base material.

9. It is an adiabatic reciprocating engine which is made same as the engine of claim 1 except that it is put a heat insulator having heat resistant ability and having strength and having a certain amount of the adiabatic performance instead of the heat resisting material in the engine of claim 1, which is put a heat insulator, such as a heat resisting iron-base alloy, a heat resisting nickel-base alloy, and a ceramics, on the surface.

10. It is an adiabatic reciprocating engine which is made same as the engine of claim 2 except that it is put the heat insulator having heat resistant ability and having strength and having a certain amount of the adiabatic performance instead of the heat resisting material in the engine of claim 2, which is put the heat insulator, such as the heat resisting iron-base alloy, the heat resisting nickel-base alloy, and the ceramics, on the surface.

11. It is an adiabatic reciprocating engine which is made same as the engine of claim 3 except that it is put the heat insulator having heat resistant ability and having strength and having a certain amount of the adiabatic performance instead of the heat resisting material in the engine of claim 3, which is put the heat insulator, such as the heat resisting iron-base alloy, the heat resisting nickel-base alloy, and the ceramics, on the surface.

12. It is an adiabatic reciprocating engine which is made same as the engine of claim 4 except 30 that it is put the heat insulator having heat resistant ability and having strength and having a certain amount of the adiabatic performance instead of the heat resisting material in the engine of claim 4, which is put the heat insulator, such as the heat resisting iron-base alloy, the heat resisting nickel-base alloy, and the ceramics, on the surface.

13. It is an adiabatic reciprocating engine which is made same as the engine of claim 5 except that it is put the heat insulator having heat resistant ability and having strength and having a certain amount of the adiabatic performance instead of the heat resisting material in the engine of claim 5, which is put the heat insulator, such as the heat resisting iron-base alloy, the heat resisting nickel-base alloy, and the ceramics, on the surface.

14. It is an adiabatic reciprocating engine which is made same as the engine of claim 6 except that it is put the heat insulator having heat resistant ability and having strength and having a certain amount of the adiabatic performance instead of the heat resisting material in the engine of claim 6, which is put the heat insulator, such as the heat resisting iron-base alloy, the heat resisting nickel-base alloy, and the ceramics, on the surface.

15. It is an adiabatic reciprocating engine which is made same as the engine of claim 7 except that it is put the heat insulator having heat resistant ability and having strength and having a certain amount of the adiabatic performance instead of the heat resisting material in the engine of claim 7, which is put the heat insulator, such as the heat resisting iron-base alloy, the heat resisting nickel-base alloy, and the ceramics, on the surface.

16. It is an adiabatic reciprocating engine which is made same as the engine of claim 8 except that it is put the heat insulator having heat resistant ability and having strength and having a certain amount of the adiabatic performance instead of the heat resisting material in the engine of claim 8, which is put the heat insulator, such as the heat resisting iron-base alloy, the heat resisting nickel-base alloy, and the ceramics, on the surface.

17. It is an adiabatic rotary engine which is put the heat resisting material, such as the heat resisting iron-base alloy, the heat resisting nickel-base alloy, the heat resisting cobalt-base alloy, and the ceramics, on the rotor surface, and is placed the heat insulator, such as the asbestos, the refractory cement, and the ceramics, between the heat resisting material and the engine base material, and, which is made a difference in the expansion ratio and the compression ratio, and is enlarged the expansion ratio, which is made a maximum rich air fuel ratio thin, is made the caliber of the venturi or the caliber of the intake pipe small, or is set limits to the throttle maximum open, for the combustion chamber dose not become high temperature too much.

18. It is an adiabatic rotary engine which is made same as the engine of claim 17 except that it is not made a difference in the expansion ratio and the compression ratio, and is not enlarged the expansion ratio, which is made the maximum rich air-fuel ratio thin, is made the caliber of the venturi or the caliber of the intake pipe small in the spark ignition engine, or is set limits to the throttle maximum open, for the combustion chamber dose not become high temperature too much.

19. It is an adiabatic rotary engine which is made same as the engine of claim 17 except that it is insulated a rotor-housing combustion chamber side in addition to the rotor surface, which is put the heat resisting material, such as the heat resisting iron-base alloy, the heat resisting nickel-base alloy, the heat resisting cobalt-base alloy, and the ceramics, on the rotor-housing combustion chamber side and the rotor surface, and is placed the heat insulator, such as the asbestos, the refractory cement, and the ceramics, between the heat resisting material and the engine base material.

20. It is an adiabatic rotary engine which is made same as the engine of claim 18 except that it is insulated the rotor-housing combustion chamber side in addition to the rotor surface, which is put the heat resisting material, such as the heat resisting iron-base alloy, the heat resisting nickel-base alloy, the heat resisting cobalt-base alloy, and the ceramics, on the rotor-housing combustion chamber side and the rotor surface, and is placed the heat insulator, such as the asbestos, the refractory cement, and the ceramics, between the heat resisting material and the engine base material.

21. It is an adiabatic rotary engine which is made same as the engine of claim 17 except that it is insulated the rotor-housing combustion chamber side and a side-housing wall surface in addition to the rotor surface, which is put the heat resisting material, such as the heat resisting iron-base alloy, the heat resisting nickel-base alloy, the heat resisting cobalt-base alloy, and the ceramics, on the rotor-housing combustion chamber side and the side-housing wall surface and the rotor surface, and is placed the heat insulator, such as the asbestos, the refractory cement, and the ceramics, between the heat resisting material and the engine base material.

22. It is an adiabatic rotary engine which is made same as the engine of claim 18 except that it is insulated the rotor-housing combustion chamber side and a side-housing wall surface in addition to the rotor surface, which is put the heat resisting material, such as the heat resisting iron-base alloy, the heat resisting nickel-base alloy, the heat resisting cobalt-base alloy, and the ceramics, on the rotor-housing combustion chamber side and the side-housing wall surface and the rotor surface, and is placed the heat insulator, such as the asbestos, the refractory cement, and the ceramics, between the heat resisting material and the engine base material.

23. It is an adiabatic rotary engine which is made same as the engine of claim 17 except that it is put the heat insulator having heat resistant ability and having strength and having a certain amount of the adiabatic performance instead of the heat resisting material in the engine of claim 17, which is put the heat insulator, such as the heat resisting iron-base alloy, the heat resisting nickel-base alloy, and the ceramics, on the surface.

24. It is an adiabatic rotary engine which is made same as the engine of claim 18 except that it is put the heat insulator having heat resistant ability and having strength and having a certain amount of the adiabatic performance instead of the heat resisting material in the engine of claim 18, which is put the heat insulator, such as the heat resisting iron-base alloy, the heat resisting nickel-base alloy, and the ceramics, on the surface.

25. It is an adiabatic rotary engine which is made same as the engine of claim 19 except that it is put the heat insulator having heat resistant ability and having strength and having a certain amount of the adiabatic performance instead of the heat resisting material in the engine of claim 19, which is put the heat insulator, such as the heat resisting iron-base alloy, the heat resisting nickel-base alloy, and the ceramics, on the surface.

26. It is an adiabatic rotary engine which is made same as the engine of claim 20 except that it is put the heat insulator having heat resistant ability and having strength and having a certain amount of the adiabatic performance instead of the heat resisting material in the engine of claim 20, which is put the heat insulator, such as the heat resisting iron-base alloy, the heat resisting nickel-base alloy, and the ceramics, on the surface.

27. It is an adiabatic rotary engine which is made same as the engine of claim 21 except that it is put the heat insulator having heat resistant ability and having strength and having a certain amount of the adiabatic performance instead of the heat resisting material in the engine of claim 21, which is put the heat insulator, such as the heat resisting iron-base alloy, the heat resisting nickel-base alloy, and the ceramics, on the surface.

28. It is an adiabatic rotary engine which is made same as the engine of claim 22 except that it is put the heat insulator having heat resistant ability and having strength and having a certain amount of the adiabatic performance instead of the heat resisting material in the engine of claim 22, which is put the heat insulator, such as the heat resisting iron-base alloy, the heat resisting nickel-base alloy, and the ceramics, on the surface.

29. It is an adiabatic compression ignition rotary engine which is put the heat resisting material, such as the heat resisting iron-base alloy, the heat resisting nickel-base alloy, the heat resisting cobalt-base alloy, and the ceramics, on the rotor surface, and is put the heat insulator, such as the asbestos, the refractory cement, and the ceramics, between the heat resisting material and the engine base material, and, which is made a difference in the expansion ratio and the compression ratio, and is enlarged the expansion ratio, which is made a maximum rich air-fuel ratio thin, is made the caliber of the venturi or the caliber of the intake pipe small, or is set limits to the throttle maximum open, for the combustion chamber dose not become high temperature too much, and, which is made capacity of the rotor recess small so that the compression ratio in which the compression ignition is possible may be obtained while the rotor recess is made a good burning form at the fuel injection, for a compression ignition rotary engine is enabled.

30. It is an adiabatic compression ignition rotary engine which is made same as the engine of claim 29 except that it is not made a difference in the expansion ratio and the compression ratio, and is not enlarged the expansion ratio, which is made a maximum rich air-fuel ratio 33 thin, for the combustion chamber dose not become high temperature too much.

31. It is an adiabatic compression ignition rotary engine which is made same as the engine of claim 29 except that it is insulated a rotor-housing combustion chamber side in addition to the rotor surface, which is put the heat resisting material, such as the heat resisting iron base alloy, the heat resisting nickel-base alloy, the heat resisting cobalt-base alloy, and the ceramics, on the rotor-housing combustion chamber side and the rotor surface, and is placed the heat insulator, such as the asbestos, the refractory cement, and the ceramics, between the heat resisting material and the engine base material.

32. It is an adiabatic compression ignition rotary engine which is made same as the engine of claim 30 except that it is insulated the rotor-housing combustion chamber side in addition to the rotor surface, which is put the heat resisting material, such as the heat resisting iron base alloy, the heat resisting nickel-base alloy, the heat resisting cobalt-base alloy, and the ceramics, on the rotor-housing combustion chamber side and the rotor surface, and is placed the heat insulator, such as the asbestos, the refractory cement, and the ceramics, between the heat resisting material and the engine base material.

33. It is an adiabatic compression ignition rotary engine which is made same as the engine of claim 29 except that it is insulated the rotor-housing combustion chamber side and the side housing wall surface in addition to the rotor surface, which is put the heat resisting material, such as the heat resisting iron-base alloy, the heat resisting nickel-base alloy, the heat resisting cobalt-base alloy, and the ceramics, on the rotor-housing combustion chamber side and the side-housing wall surface and the rotor surface, and is placed the heat insulator, such as the asbestos, the refractory cement, and the ceramics, between the heat resisting material and the engine base material.

34. It is an adiabatic compression ignition rotary engine which is made same as the engine of claim 30 except that it is insulated the rotor-housing combustion chamber side and the side housing wall surface in addition to the rotor surface, which is put the heat resisting material, such as the heat resisting iron-base alloy, the heat resisting nickel-base alloy, the heat resisting cobalt-base alloy, and the ceramics, on the rotor-housing combustion chamber side and the side-housing wall surface and the rotor surface, and is placed the heat insulator, such as the asbestos, the refractory cement, and the ceramics, between the heat resisting material and the engine base material.

35. It is an adiabatic compression ignition rotary engine which is made same as the engine of claim 29 except that it is put the heat insulator having heat resistant ability and having strength and having a certain amount of the adiabatic performance instead of the heat resisting material in the engine of claim 29, which is put the heat insulator, such as the heat resisting iron-base alloy, the heat resisting nickel-base alloy, and the ceramics, on the surface.

36. It is an adiabatic compression ignition rotary engine which is made same as the engine of claim 30 except that it is put the heat insulator having heat resistant ability and having strength and having a certain amount of adiabatic performance instead of the heat resisting material in the engine of claim 30, which is put the heat insulator, such as the heat resisting iron-base alloy, the heat resisting nickel-base alloy, and the ceramics, on the surface.

37. It is an adiabatic compression ignition rotary engine which is made same as the engine of claim 31 except that it is put the heat insulator having heat resistant ability and having strength and having a certain amount of adiabatic performance instead of the heat resisting material in the engine of claim 31, which is put the heat insulator, such as the heat resisting iron-base alloy, the heat resisting nickel-base alloy, and the ceramics, on the surface.

38. It is an adiabatic compression ignition rotary engine which is made same as the engine of claim 32 except that it is put the heat insulator having heat resistant ability and having strength and having a certain amount of adiabatic performance instead of the heat resisting material in the engine of claim 32, which is put the heat insulator, such as the heat resisting iron-base alloy, the heat resisting nickel-base alloy, and the ceramics, on the surface.

39. It is an adiabatic compression ignition rotary engine which is made same as the engine of claim 33 except that it is put the heat insulator having heat resistant ability and having strength and having a certain amount of the adiabatic performance instead of the heat resisting material in the engine of claim 33, which is put the heat insulator, such as the heat resisting iron-base alloy, the heat resisting nickel-base alloy, and the ceramics, on the surface.

40. It is an adiabatic compression ignition rotary engine which is made same as the engine of claim 34 except that it is put the heat insulator having heat resistant ability and having strength and having a certain amount of the adiabatic performance instead of the heat resisting material in the engine of claim 34, which is put the heat insulator, such as the heat resisting iron-base alloy, the heat resisting nickel-base alloy, and the ceramics, on the surface. The amendments to the claims is: [17 December 1999 (17.12.99) the International Bureau acceptance: the application was transposed from claim 1-40 to a new claim 1-80.] [A translation of the amendments to the claims under PCT Article 19] 1. (after amendment) It is an adiabatic reciprocating engine which is put a heat resisting material, such as a heat resisting iron-base alloy, a heat resisting nickel-base alloy, a heat resisting cobalt-base alloy, and a ceramics, on the cylinder head combustion chamber side and the piston crown surface, and is placed a heat insulator, such as an asbestos, a refractory cement, and a ceramics, between the heat resisting material and the engine base material, and, which is made the compression ratio smaller than the conventional compression ratio in order to make a temperature at the time of the end of compression into 850C or less on the combustion chamber surface, and is made a difference in the expansion ratio and the compression ratio, and is enlarged the expansion ratio rather than the compression ratio, for the combustion chamber dose not become high temperature too much. 2. (after amendment) It is an adiabatic rotary engine which is put the heat resisting material, such as the heat resisting iron-base alloy, the heat resisting nickel-base alloy, the heat resisting cobalt-base alloy, and the ceramics, on the rotor surface, and is placed the heat insulator, such as the asbestos, the refractory cement, and the ceramics, between the heat resisting material and the engine base material, and, which is made the compression ratio smaller than the conventional compression ratio in order to make a temperature at the time of the end of compression into 850'C or less on the combustion chamber surface, and is made a difference in the expansion ratio and the compression ratio, and is enlarged the expansion ratio rather than the compression ratio, for the combustion chamber dose not become high temperature too much. 3. (after amendment) It is an adiabatic compression ignition rotary engine which is put the heat resisting material, such as the heat resisting iron-base alloy, the heat resisting nickel base alloy, the heat resisting cobalt-base alloy, and the ceramics, on the rotor surface, and is placed the heat insulator, such as the asbestos, the refractory cement, and the ceramics, between the heat resisting material and the engine base material, and, which is made a capacity of the rotor recess small so that the compression ratio in which the compression ignition is possible may be obtained while the rotor recess is made a good burning form at the fuel injection, for the compression ignition rotary engine is enabled, and, which is made the compression ratio small in order to make a temperature at the time of the end of compression into 850'C or less on the combustion chamber surface, and is made a difference in the expansion ratio and the compression ratio, and is enlarged the expansion ratio rather than the compression ratio, for the combustion chamber dose not become high temperature too much. 4. (after amendment) It is an adiabatic reciprocating engine which is put the heat resisting material, such as the heat resisting iron-base alloy, the heat resisting nickel-base alloy, the heat resisting cobalt-base alloy, and the ceramics, on the cylinder wall surface and the cylinder head combustion chamber side and the piston crown surface, and is placed the heat insulator, such as the asbestos, the refractory cement, and the ceramics, between the heat resisting material and the engine base material. 5. (after amendment) It is an adiabatic reciprocating engine which is put the heat resisting material, such as the heat resisting iron-base alloy, the heat resisting nickel-base alloy, the heat resisting cobalt-base alloy, and the ceramics, on the cylinder head combustion chamber side and the piston crown surface, and is placed the heat insulator, such as the asbestos, the refractory cement, and the ceramics, between the heat resisting material and the engine base material. 6. (after amendment) It is an adiabatic reciprocating engine which is put the heat resisting material, such as the heat resisting iron-base alloy, the heat resisting nickel-base alloy, the heat resisting cobalt-base alloy, and the ceramics, on the cylinder head combustion chamber side, and is placed the heat insulator, such as the asbestos, the refractory cement, and the ceramics, between the heat resisting material and the engine base material. 7. (after amendment) It is an adiabatic reciprocating engine which is put the heat resisting material, such as the heat resisting iron-base alloy, the heat resisting nickel-base alloy, the heat resisting cobalt-base alloy, and the ceramics, on the piston crown surface, and is placed the heat insulator, such as the asbestos, the refractory cement, and the ceramics, between the heat resisting material and the engine base material. 8. (after amendment) It is an adiabatic reciprocating engine which is put the heat insulator having heat resistant ability and having strength and having a certain amount of the adiabatic performance, such as the heat resisting iron-base alloy, the heat resisting nickel base alloy, and the ceramics, on the cylinder wall surface and the cylinder head combustion chamber side and the piston crown surface. 9. (after amendment) It is an adiabatic reciprocating engine which is put the heat insulator having heat resistant ability and having strength and having a certain amount of the adiabatic performance, such as the heat resisting iron-base alloy, the heat resisting nickel base alloy, and the ceramics, on the cylinder head combustion chamber side and the piston crown surface. 10. (after amendment) It is an adiabatic reciprocating engine which is put the heat insulator having heat resistant ability and having strength and having a certain amount of the adiabatic performance, such as the heat resisting iron-base alloy, the heat resisting nickel base alloy, and the ceramics, on the cylinder head combustion chamber side. 11. (after amendment) It is an adiabatic reciprocating engine which is put the heat insulator having heat resistant ability and having strength and having a certain amount of the adiabatic performance, such as the heat resisting iron-base alloy, the heat resisting nickel base alloy, and the ceramics, on the piston crown surface. 12. (after amendment) It is an adiabatic reciprocating engine which is put the heat resisting material, such as the heat resisting iron-base alloy, the heat resisting nickel-base alloy, the heat resisting cobalt-base alloy, and the ceramics, on the cylinder head combustion chamber side and the piston crown surface and the cylinder wall surface, and is placed the heat insulator, such as the asbestos, the refractory cement, and the ceramics, between the heat resisting material and the engine base material, and, which is made the compression ratio smaller than the conventional compression ratio in order to make a temperature at the time of the end of compression into 850'C or less on the combustion chamber surface. 13. (after amendment) It is an adiabatic reciprocating engine which is put the heat resisting ~37 material, such as the heat resisting iron-base alloy, the heat resisting nickel-base alloy, the heat resisting cobalt-base alloy, and the ceramics, on the cylinder head combustion chamber side and the piston crown surface, and is placed the heat insulator, such as the asbestos, the refractory cement, and the ceramics, between the heat resisting material and the engine base material, and, which is made the compression ratio smaller than the conventional compression ratio in order to make a temperature at the time of the end of compression into 850'C or less on the combustion chamber surface. 14. (after amendment) It is an adiabatic reciprocating engine which is put the heat resisting material, such as the heat resisting iron-base alloy, the heat resisting nickel-base alloy, the heat resisting cobalt-base alloy, and the ceramics, on the cylinder head combustion chamber side, and is placed the heat insulator, such as the asbestos, the refractory cement, and the ceramics, between the heat resisting material and the engine base material, and, which is made the compression ratio smaller than the conventional compression ratio in order to make a temperature at the time of the end of compression into 850"C or less on the combustion chamber surface. 15. (after amendment) It is an adiabatic reciprocating engine which is put the heat resisting material, such as the heat resisting iron-base alloy, the heat resisting nickel-base alloy, the heat resisting cobalt-base alloy, and the ceramics, on the piston crown surface, and is placed the heat insulator, such as the asbestos, the refractory cement, and the ceramics, between the heat resisting material and the engine base material, and, which is made the compression ratio smaller than the conventional compression ratio in order to make a temperature at the time of the end of compression into 850"C or less on the combustion chamber surface. 16. (after amendment) It is an adiabatic reciprocating engine which is put the heat insulator having heat resistant ability and having strength and having a certain amount of the adiabatic performance, such as the heat resisting iron-base alloy, the heat resisting nickel base alloy, and the ceramics, on the cylinder wall surface and the cylinder head combustion chamber side and the piston crown surface, and, which is made the compression ratio smaller than the conventional compression ratio in order to make a temperature at the time of the end of compression into 850"C or less on the combustion chamber surface. 17. (after amendment) It is an adiabatic reciprocating engine which is put the heat insulator having heat resistant ability and having strength and having a certain amount of the adiabatic performance, such as the heat resisting iron-base alloy, the heat resisting nickel base alloy, and the ceramics, on the cylinder head combustion chamber side and the piston crown surface, and, which is made the compression ratio smaller than the conventional compression ratio in order to make a temperature at the time of the end of compression into 850*C or less on the combustion chamber surface. 18. (after amendment) It is an adiabatic reciprocating engine which is put the heat insulator having heat resistant ability and having strength and having a certain amount of the adiabatic performance, such as the heat resisting iron-base alloy, the heat resisting nickel base alloy, and the ceramics, on the cylinder head combustion chamber side, and, which is made the compression ratio smaller than the conventional compression ratio in order to make a temperature at the time of the end of compression into 850*C or less on the combustion chamber surface. 19. (after amendment) It is an adiabatic reciprocating engine which is put the heat insulator having heat resistant ability and having strength and having a certain amount of the adiabatic performance, such as the heat resisting iron-base alloy, the heat resisting nickel base alloy, and the ceramics, on the piston crown surface, and, which is made the compression ratio smaller than the conventional compression ratio in order to make a temperature at the time of the end of compression into 850*C or less on the combustion chamber surface. 20. (after amendment) It is an adiabatic reciprocating engine which is put the heat resisting material, such as the heat resisting iron-base alloy, the heat resisting nickel-base alloy, the heat resisting cobalt-base alloy, and the ceramics, on the cylinder head combustion chamber side and the piston crown surface and the cylinder wall surface, and is placed a heat insulator, such as the asbestos, the refractory cement, and the ceramics, between the heat resisting material and the engine base material, and, which is made a difference in the expansion ratio and the compression ratio, and is enlarged the expansion ratio rather than the compression ratio, for the combustion chamber dose not become high temperature too much. 21. (after amendment) It is an adiabatic reciprocating engine which is put the heat resisting material, such as the heat resisting iron-base alloy, the heat resisting nickel-base alloy, the heat resisting cobalt-base alloy, and the ceramics, on the cylinder head combustion chamber side and the piston crown surface, and is placed the heat insulator, such as the asbestos, the refractory cement, and the ceramics, between the heat resisting material and the engine base material, and, which is made a difference in the expansion ratio and the compression ratio, and is enlarged the expansion ratio rather than the compression ratio, for the combustion chamber dose not become high temperature too much. 22. (after amendment) It is an adiabatic reciprocating engine which is put the heat resisting material, such as the heat resisting iron-base alloy, the heat resisting nickel-base alloy, the heat resisting cobalt-base alloy, and the ceramics, on the cylinder head combustion chamber side, and is placed the heat insulator, such as the asbestos, the refractory cement, and the ceramics, between the heat resisting material and the engine base material, and, which is made a difference in the expansion ratio and the compression ratio, and is enlarged the expansion ratio rather than the compression ratio, for the combustion chamber does not become high temperature too much. 23. (after amendment) It is an adiabatic reciprocating engine which is put the heat resisting material, such as the heat resisting iron-base alloy, the heat resisting nickel-base alloy, the heat resisting cobalt-base alloy, and the ceramics, on the piston crown surface, and is placed the heat insulator, such as the asbestos, the refractory cement, and the ceramics, between the heat resisting material and the engine base material, and, which is made a difference in the expansion ratio and the compression ratio, and is enlarged the expansion ratio rather than the compression ratio, for the combustion chamber does not become high temperature too much. 24. (after amendment) It is an adiabatic reciprocating engine which is put the heat insulator having heat resistant ability and having strength and having a certain amount of the adiabatic performance, such as the heat resisting iron-base alloy, the heat resisting nickel base alloy, and the ceramics, on the cylinder wall surface and the cylinder head combustion chamber side and the piston crown surface, and, which is made a difference in the expansion ratio and the compression ratio, and is enlarged the expansion ratio rather than the compression ratio, for the combustion chamber dose not become high temperature too much. 25. (after amendment) It is an adiabatic reciprocating engine which is put the heat insulator having heat resistant ability and having strength and having a certain amount of the adiabatic performance, such as the heat resisting iron-base alloy, the heat resisting nickel base alloy, and the ceramics, on the cylinder head combustion chamber side and the piston crown surface, and, which is made a difference in the expansion ratio and the compression ratio, and is enlarged the expansion ratio rather than the compression ratio, for the combustion chamber dose not become high temperature too much. 26. (after amendment) It is an adiabatic reciprocating engine which is put the heat insulator having heat resistant ability and having strength and having a certain amount of the adiabatic performance, such as the heat resisting iron-base alloy, the heat resisting nickel base alloy, and the ceramics, on the cylinder head combustion chamber side, and, which is made a difference in the expansion ratio and the compression ratio, and is enlarged the expansion ratio rather than the compression ratio, for the combustion chamber dose not become high temperature too much. 27. (after amendment) It is an adiabatic reciprocating engine which is put the heat insulator having heat resistant ability and having strength and having a certain amount of the adiabatic performance, such as the heat resisting iron-base alloy, the heat resisting nickel base alloy, and the ceramics, on the piston crown surface, and, which is made a difference in the expansion ratio and the compression ratio, and is enlarged the expansion ratio rather than the compression ratio, for the combustion chamber dose not become high temperature too much. 28. (after amendment) It is an adiabatic reciprocating engine which is put the heat resisting material, such as the heat resisting iron-base alloy, the heat resisting nickel-base alloy, the heat resisting cobalt-base alloy, and the ceramics, on the cylinder head combustion chamber side and the piston crown surface and the cylinder wall surface, and is placed the heat insulator, such as the asbestos, the refractory cement, and the ceramics, between the heat resisting material and the engine base material, and, which is made the compression ratio smaller than the conventional compression ratio in order to make a temperature at the time of the end of compression into 8500C or less on the combustion chamber surface, and is made a difference in the expansion ratio and the compression ratio, and is enlarged the expansion ratio rather than the compression ratio, for the combustion chamber dose not become high temperature too much. 29. (after amendment) It is an adiabatic reciprocating engine which is put the heat resisting material, such as the heat resisting iron-base alloy, the heat resisting nickel-base alloy, the heat resisting cobalt-base alloy, and the ceramics, on the cylinder head combustion chamber side, and is placed the heat insulator, such as the asbestos, the refractory cement, and the ceramics, between the heat resisting material and the engine base material, and, which is made the compression ratio smaller than the conventional compression ratio in order to make a temperature at the time of the end of compression into 850'C or less on the combustion chamber surface, and is made a difference in the expansion ratio and the compression ratio, and is enlarged the expansion ratio rather than the compression ratio, for the combustion chamber dose not become high temperature too much. 30. (after amendment) It is an adiabatic reciprocating engine which is put the heat resisting material, such as the heat resisting iron-base alloy, the heat resisting nickel-base alloy, the heat resisting cobalt-base alloy, and the ceramics, on the piston crown surface, and is placed the heat insulator, such as the asbestos, the refractory cement, and the ceramics, between the heat resisting material and the engine base material, and, which is made the compression ratio smaller than the conventional compression ratio in order to make a temperature at the time of the end of compression into 850"C or less on the combustion chamber surface, and is made a difference in the expansion ratio and the compression ratio, and is enlarged the expansion ratio rather than the compression ratio, for the combustion chamber dose not become high temperature too much. 31. (after amendment) It is an adiabatic reciprocating engine which is put the heat insulator having heat resistant ability and having strength and having a certain amount of adiabatic performance, such as the heat resisting iron-base alloy, the heat resisting nickel-base alloy, and the ceramics, on the cylinder head combustion chamber side and the piston crown surface and the cylinder wall surface, and, which is made the compression ratio smaller than the conventional compression ratio in order to make a temperature at the time of the end of compression into 850*C or less on the combustion chamber surface, and is made a difference in the expansion ratio and the compression ratio, and is enlarged the expansion ratio rather than the compression ratio, for the combustion chamber dose not become high temperature 1LIl too much. 32. (after amendment) It is an adiabatic reciprocating engine which is put the heat insulator having heat resistant ability and having strength and having a certain amount of adiabatic performance, such as the heat resisting iron-base alloy, the heat resisting nickel-base alloy, and the ceramics, on the cylinder head combustion chamber side and the piston crown surface, and, which is made the compression ratio smaller than the conventional compression ratio in order to make a temperature at the time of the end of compression into 850"C or less on the combustion chamber surface, and is made a difference in the expansion ratio and the compression ratio, and is enlarged the expansion ratio rather than the compression ratio, for the combustion chamber dose not become high temperature too much. 33. (after amendment) It is an adiabatic reciprocating engine which is put the heat insulator having heat resistant ability and having strength and having a certain amount of adiabatic performance, such as the heat resisting iron-base alloy, the heat resisting nickel-base alloy, and the ceramics, on the cylinder head combustion chamber side, and, which is made the compression ratio smaller than the conventional compression ratio in order to make a temperature at the time of the end of compression into 850"C or less on the combustion chamber surface, and is made a difference in the expansion ratio and the compression ratio, and is enlarged the expansion ratio rather than the compression ratio, for the combustion chamber does not become high temperature too much. 34. (after amendment) It is an adiabatic reciprocating engine which is put the heat insulator having heat resistant ability and having strength and having a certain amount of adiabatic performance, such as the heat resisting iron-base alloy, the heat resisting nickel-base alloy, and the ceramics, on the piston crown surface, and, which is made the compression ratio smaller than the conventional compression ratio in order to make a temperature at the time of the end of compression into 850'C or less on the combustion chamber surface, and is made a difference in the expansion ratio and the compression ratio, and is enlarged the expansion ratio rather than the compression ratio, for the combustion chamber does not become high temperature too much. 35. (after amendment) It is an adiabatic rotary engine which is put the heat resisting material, such as the heat resisting iron-base alloy, the heat resisting nickel-base alloy, the heat resisting cobalt-base alloy, and the ceramics, on the rotor surface, and is placed the heat insulator, such as the asbestos, the refractory cement, and the ceramics, between the heat resisting material and the engine base material. 36. (after amendment) It is an adiabatic rotary engine which is put the heat resisting material, such as the heat resisting iron-base alloy, the heat resisting nickel-base alloy, the heat resisting cobalt-base alloy, and the ceramics, on the rotor surface and the rotor-housing combustion chamber side, and is placed the heat insulator, such as the asbestos, the refractory cement, and the ceramics, between the heat resisting material and the engine base material. 37. (after amendment) It is an adiabatic rotary engine which is put the heat resisting material, such as the heat resisting iron-base alloy, the heat resisting nickel-base alloy, the heat resisting cobalt-base alloy, and the ceramics, on the rotor surface and the rotor-housing combustion chamber side and the side-housing wall surface, and is placed the heat insulator, such as the asbestos, the refractory cement, and the ceramics, between the heat resisting material and the engine base material. 38. (after amendment) It is an adiabatic rotary engine which is put the heat insulator having heat resistant ability and having strength and having a certain amount of the adiabatic performance, such as the heat resisting iron-base alloy, the heat resisting nickel-base alloy, and the ceramics, on the rotor surface. 39. (after amendment) It is an adiabatic rotary engine which is put the heat insulator having heat resistant ability and having strength and having a certain amount of the adiabatic performance, such as the heat resisting iron-base alloy, the heat resisting nickel-base alloy, and the ceramics, on the rotor surface and the rotor-housing combustion chamber side. 40. (after amendment) It is an adiabatic rotary engine which is put the heat insulator having heat resistant ability and having strength and having a certain amount of the adiabatic performance, such as the heat resisting iron-base alloy, the heat resisting nickel-base alloy, and the ceramics, on the rotor surface and the rotor-housing combustion chamber side and the rotor-housing combustion chamber side and the side-housing wall surface.

41. (after amendment) It is an adiabatic rotary engine which is put the heat resisting material, such as the heat resisting iron-base alloy, the heat resisting nickel-base alloy, the heat resisting cobalt-base alloy, and the ceramics, on the rotor surface, and is placed the heat insulator, such as the asbestos, the refractory cement, and the ceramics, between the heat resisting material and the engine base material, and, which is made the compression ratio smaller than the conventional compression ratio in order to make a temperature at the time of the end of compression into 850"C or less on the combustion chamber surface.

42. (after amendment) It is an adiabatic rotary engine which is put the heat resisting material, such as the heat resisting iron-base alloy, the heat resisting nickel-base alloy, the heat resisting cobalt-base alloy, and the ceramics, on the rotor surface and the rotor-housing combustion chamber side, and is placed the heat insulator, such as the asbestos, the refractory cement, and the ceramics, between the heat resisting material and the engine base material, and, which is made the compression ratio smaller than the conventional compression ratio in order to make a temperature at the time of the end of compression into 8500C or less on the combustion chamber surface.

43. (after amendment) It is an adiabatic rotary engine which is put the heat resisting material, such as the heat resisting iron-base alloy, the heat resisting nickel-base alloy, the heat resisting cobalt-base alloy, and the ceramics, on the rotor surface and the rotor-housing 4-3 combustion chamber side and the side-housing wall surface, and is placed the heat insulator, such as the asbestos, the refractory cement, and the ceramics, between the heat resisting material and the engine base material, and, which is made the compression ratio smaller than the conventional compression ratio in order to make a temperature at the time of the end of compression into 850"C or less on the combustion chamber surface.

44. (after amendment) It is an adiabatic rotary engine which is put the heat insulator having heat resistant ability and having strength and having a certain amount of the adiabatic performance, such as the heat resisting iron-base alloy, the heat resisting nickel-base alloy, and the ceramics, on the rotor surface, and, which is made the compression ratio smaller than the conventional compression ratio in order to make a temperature at the time of the end of compression into 850"C or less on the combustion chamber surface.

45. (after amendment) It is an adiabatic rotary engine which is put the heat insulator having heat resistant ability and having strength and having a certain amount of the adiabatic performance, such as the heat resisting iron-base alloy, the heat resisting nickel-base alloy, and the ceramics, on the rotor surface and the rotor-housing combustion chamber side, and, which is made the compression ratio smaller than the conventional compression ratio in order to make a temperature at the time of the end of compression into 850'C or less on the combustion chamber surface.

46. (after amendment) It is an adiabatic rotary engine which is put the heat insulator having heat resistant ability and having strength and having a certain amount of the adiabatic performance, such as the heat resisting iron-base alloy, the heat resisting nickel-base alloy, and the ceramics, on the rotor surface and the rotor-housing combustion chamber side and the side-housing wall surface, and, which is made the compression ratio smaller than the conventional compression ratio in order to make a temperature at the time of the end of compression into 850"C or less on the combustion chamber surface.

47. (after amendment) It is an adiabatic rotary engine which is put the heat resisting material, such as the heat resisting iron-base alloy, the heat resisting nickel-base alloy, the heat resisting cobalt-base alloy, and the ceramics, on the rotor surface, and is placed the heat insulator, such as the asbestos, the refractory cement, and the ceramics, between the heat resisting material and the engine base material, and, which is made a difference in the expansion ratio and the compression ratio, and is enlarged the expansion ratio rather than the compression ratio, for the combustion chamber does not become high temperature too much.

48. (after amendment) It is an adiabatic rotary engine which is put the heat resisting material, such as the heat resisting iron-base alloy, the heat resisting nickel-base alloy, the heat resisting cobalt-base alloy, and the ceramics, on the rotor surface and the rotor-housing combustion chamber side, and is placed the heat insulator, such as the asbestos, the refractory cement, and the ceramics, between the heat resisting material and the engine base material, and, which is made a difference in the expansion ratio and the compression ratio, and is enlarged the expansion ratio rather than the compression ratio, for the combustion chamber does not become high temperature too much.

49. (after amendment) It is an adiabatic rotary engine which is put the heat resisting material, such as the heat resisting iron-base alloy, the heat resisting nickel-base alloy, the heat resisting cobalt-base alloy, and the ceramics, on the rotor surface and the rotor-housing combustion chamber side and the side-housing wall surface, and is placed the heat insulator, such as the asbestos, the refractory cement, and the ceramics, between the heat resisting material and the engine base material, and, which is made a difference in the expansion ratio and the compression ratio, and is enlarged the expansion ratio rather than the compression ratio, for the combustion chamber does not become high temperature too much.

50. (after amendment) It is an adiabatic rotary engine which is put the heat insulator having heat resistant ability and having strength and having a certain amount of the adiabatic performance, such as the heat resisting iron-base alloy, the heat resisting nickel-base alloy, and the ceramics, on the rotor surface, and, which is made a difference in the expansion ratio and the compression ratio, and is enlarged the expansion ratio rather than the compression ratio, for the combustion chamber does not become high temperature too much.

51. (after amendment) It is an adiabatic rotary engine which is put the heat insulator having heat resistant ability and having strength and having a certain amount of the adiabatic performance, such as the heat resisting iron-base alloy, the heat resisting nickel-base alloy, and the ceramics, on the rotor surface and the rotor-housing combustion chamber side, and, which is made a difference in the expansion ratio and the compression ratio, and is enlarged the expansion ratio rather than the compression ratio, for the combustion chamber does not become high temperature too much.

52. (after amendment) It is an adiabatic rotary engine which is put the heat insulator having heat resistant ability and having strength and having a certain amount of the adiabatic performance, such as the heat resisting iron-base alloy, the heat resisting nickel-base alloy, and the ceramics, on the rotor surface and the rotor-housing combustion chamber side and the side-housing wall surface, and, which is made a difference in the expansion ratio and the compression ratio, and is enlarged the expansion ratio rather than the compression ratio, for the combustion chamber does not become high temperature too much.

53. (after amendment) It is an adiabatic rotary engine which is put the heat resisting material, such as the heat resisting iron-base alloy, the heat resisting nickel-base alloy, the heat resisting cobalt-base alloy, and the ceramics, on the rotor surface and the rotor-housing combustion chamber side, and is placed the heat insulator, such as the asbestos, the refractory cement, and the ceramics, between the heat resisting material and the engine base material, and, which is made the compression ratio smaller than the conventional compression ratio in order to make a temperature at the time of the end of compression into 850C or less on the combustion chamber surface, and is made a difference in the expansion ratio and the compression ratio, and is enlarged the expansion ratio rather than the compression ratio, for the combustion chamber does not become high temperature too much.

54. (after amendment) It is an adiabatic rotary engine which is put the heat resisting material, such as the heat resisting iron-base alloy, the heat resisting nickel-base alloy, the heat resisting cobalt-base alloy, and the ceramics, on the rotor surface and the rotor-housing combustion chamber side and the side-housing wall surface, and is placed the heat insulator, such as the asbestos, the refractory cement, and the ceramics, between the heat resisting material and the engine base material, and, which is made the compression ratio smaller than the conventional compression ratio in order to make a temperature at the time of the end of compression into 850'C or less on the combustion chamber surface, and is made a difference in the expansion ratio and the compression ratio, and is enlarged the expansion ratio rather than the compression ratio, for the combustion chamber does not become high temperature too much.

55. (after amendment) It is an adiabatic rotary engine which is put the heat insulator having heat resistant ability and having strength and having a certain amount of adiabatic performance, such as the heat resisting iron-base alloy, the heat resisting nickel-base alloy, and the ceramics, on the rotor surface, and, which is made the compression ratio smaller than the conventional compression ratio in order to make a temperature at the time of the end of compression into 850"C or less on the combustion chamber surface, and is made a difference in the expansion ratio and the compression ratio, and is enlarged the expansion ratio rather than the compression ratio, for the combustion chamber does not become high temperature too much.

56. (after amendment) It is an adiabatic rotary engine which is put the heat insulator having heat resistant ability and having strength and having a certain amount of adiabatic performance, such as the heat resisting iron-base alloy, the heat resisting nickel-base alloy, and the ceramics, on the rotor surface and the rotor-housing combustion chamber side, and, which is made the compression ratio smaller than the conventional compression ratio in order to make a temperature at the time of the end of compression into 8501C or less on the combustion chamber surface, and is made a difference in the expansion ratio and the compression ratio, and is enlarged the expansion ratio rather than the compression ratio, for the combustion chamber does not become high temperature too much.

57. (after amendment) It is an adiabatic rotary engine which is put the heat insulator having heat resistant ability and having strength and having a certain amount of adiabatic performance, such as the heat resisting iron-base alloy, the heat resisting nickel-base alloy, and the ceramics, on the rotor surface and the rotor-housing combustion chamber side and the side-housing wall surface, and, which is made the compression ratio smaller than the conventional compression ratio in order to make a temperature at the time of the end of compression into 850*C or less on the combustion chamber surface, and is made a difference in the expansion ratio and the compression ratio, and is enlarged the expansion ratio rather than the compression ratio, for the combustion chamber does not become high temperature too much.

58. (after amendment) It is an adiabatic compression ignition rotary engine which is put the heat resisting material, such as the heat resisting iron-base alloy, the heat resisting nickel base alloy, the heat resisting cobalt-base alloy, and the ceramics, on the rotor surface, and is placed the heat insulator, such as the asbestos, the refractory cement, and the ceramics, between the heat resisting material and the engine base material, and, which is made a capacity of the rotor recess small so that the compression ratio in which the compression ignition is possible may be obtained while the rotor recess is made a good burning form at the fuel injection, for the compression ignition rotary engine is enabled.

59. (after amendment) It is an adiabatic compression ignition rotary engine which is put the heat resisting material, such as the heat resisting iron-base alloy, the heat resisting nickel base alloy, the heat resisting cobalt-base alloy, and the ceramics, on the rotor surface and the rotor-housing combustion chamber side, and is placed the heat insulator, such as the asbestos, the refractory cement, and the ceramics, between the heat resisting material and the engine base material, and, which is made a capacity of the rotor recess small so that the compression ratio in which the compression ignition is possible may be obtained while the rotor recess is made a good burning form at the fuel injection, for the compression ignition rotary engine is enabled.

60. (after amendment) It is an adiabatic compression ignition rotary engine which is put the heat resisting material, such as the heat resisting iron-base alloy, the heat resisting nickel base alloy, the heat resisting cobalt-base alloy, and the ceramics, on the rotor surface and the rotor-housing combustion chamber side and the side-housing wall surface, and is placed the heat insulator, such as the asbestos, the refractory cement, and the ceramics, between the heat resisting material and the engine base material, and, which is made a capacity of the rotor recess small so that the compression ratio in which the compression ignition is possible may be obtained while the rotor recess is made a good burning form at the fuel injection, for the compression ignition rotary engine is enabled.

61. (after amendment) It is an adiabatic compression ignition rotary engine which is put the heat insulator having heat resistant ability and having strength and having a certain amount of the adiabatic performance, such as the heat resisting iron-base alloy, the heat resisting nickel-base alloy, and the ceramics, on the rotor surface, and, which is made a capacity of the rotor recess small so that the compression ratio in which the compression ignition is possible may be obtained while the rotor recess is made a good burning form at the fuel injection, for the compression ignition rotary engine is enabled.

62. (after amendment) It is an adiabatic compression ignition rotary engine which is put the heat insulator having heat resistant ability and having strength and having a certain amount of adiabatic performance, such as the heat resisting iron-base alloy, the heat resisting nickel-base alloy, and the ceramics, on the rotor surface and the rotor-housing combustion chamber side, and, which is made a capacity of the rotor recess small so that the compression ratio in which the compression ignition is possible may be obtained while the rotor recess is made a good burning form at the fuel injection, for the compression ignition rotary engine is enabled.

63. (after amendment) It is an adiabatic compression ignition rotary engine which is put the heat insulator having heat resistant ability and having strength and having a certain amount of adiabatic performance, such as the heat resisting iron-base alloy, the heat resisting nickel-base alloy, and the ceramics, on the rotor surface and the rotor-housing combustion chamber side and the side-housing wall surface, and, which is made a capacity of the rotor recess small so that the compression ratio in which the compression ignition is possible may be obtained while the rotor recess is made a good burning form at the fuel injection, for the compression ignition rotary engine is enabled.

64. (after amendment) It is an adiabatic compression ignition rotary engine which is put the heat resisting material, such as the heat resisting iron-base alloy, the heat resisting nickel base alloy, the heat resisting cobalt-base alloy, and the ceramics, on the rotor surface, and is placed the heat insulator, such as the asbestos, the refractory cement, and the ceramics, between the heat resisting material and the engine base material, and, which is made the capacity of the rotor recess small so that the compression ratio in which the compression ignition is possible may be obtained while the rotor recess is made a good burning form at the fuel injection, for the compression ignition rotary engine is enabled, and, which is made the compression ratio small in order to make a temperature at the time of the end of compression into 850*C or less on the combustion chamber surface.

65. (after amendment) It is an adiabatic compression ignition rotary engine which is put the heat resisting material, such as the heat resisting iron-base alloy, the heat resisting nickel base alloy, the heat resisting cobalt-base alloy, and the ceramics, on the rotor surface and the rotor-housing combustion chamber side, and is placed the heat insulator, such as the asbestos, the refractory cement, and the ceramics, between the heat resisting material and the engine base material, and, which is made the capacity of the rotor recess small so that the compression ratio in which the compression ignition is possible may be obtained while the rotor recess is made a good burning form at the fuel injection, for the compression ignition rotary engine is enabled, and, which is made the compression ratio small in order to make a temperature at the time of the end of compression into 850'C or less on the combustion chamber surface.

66. (after amendment) It is an adiabatic compression ignition rotary engine which is put the heat resisting material, such as the heat resisting iron-base alloy, the heat resisting nickel- base alloy, the heat resisting cobalt-base alloy, and the ceramics, on the rotor surface and the rotor-housing combustion chamber side and the side-housing wall surface, and is placed the heat insulator, such as the asbestos, the refractory cement, and the ceramics, between the heat resisting material and the engine base material, and, which is made the capacity of the rotor recess small so that the compression ratio in which the compression ignition is possible may be obtained while the rotor recess is made a good burning form at the fuel injection, for the compression ignition rotary engine is enabled, and, which is made the compression ratio small in order to make a temperature at the time of the end of compression into 8501C or less on the combustion chamber surface.

67. (after amendment) It is an adiabatic compression ignition rotary engine which is put the heat insulator having heat resistant ability and having strength and having a certain amount of adiabatic performance, such as the heat resisting iron-base alloy, the heat resisting nickel-base alloy, and the ceramics, on the rotor surface, and, which is made the capacity of the rotor recess small so that the compression ratio in which the compression ignition is possible may be obtained while the rotor recess is made a good burning form at the fuel injection, for the compression ignition rotary engine is enabled, and, which is made the compression ratio small in order to make a temperature at the time of the end of compression into 850*C or less on the combustion chamber surface.

68. (after amendment) It is an adiabatic compression ignition rotary engine which is put the heat insulator having heat resistant ability and having strength and having a certain amount of adiabatic performance, such as the heat resisting iron-base alloy, the heat resisting nickel-base alloy, and the ceramics, on the rotor surface and the rotor-housing combustion chamber side, and, which is made the capacity of the rotor recess small so that the compression ratio in which the compression ignition is possible may be obtained while the rotor recess is made a good burning form at the fuel injection, for the compression ignition rotary engine is enabled, and, which is made the compression ratio small in order to make a temperature at the time of the end of compression into 850'C or less on the combustion chamber surface.

69. (after amendment) It is an adiabatic compression ignition rotary engine which is put the heat insulator having heat resistant ability and having strength and having a certain amount of adiabatic performance, such as the heat resisting iron-base alloy, the heat resisting nickel-base alloy, and the ceramics, on the rotor surface and the rotor-housing combustion chamber side and the side-housing wall surface, and, which is made the capacity of the rotor recess small so that the compression ratio in which the compression ignition is possible may be obtained while the rotor recess is made a good burning form at the fuel injection, for the compression ignition rotary engine is enabled, and, which is made the compression ratio small in order to make a temperature at the time of the end of compression into 850'C or less on the combustion chamber surface.

70. (after amendment) It is an adiabatic compression ignition rotary engine which is put the heat resisting material, such as the heat resisting iron-base alloy, the heat resisting nickel base alloy, the heat resisting cobalt-base alloy, and the ceramics, on the rotor surface, and is placed the heat insulator, such as the asbestos, the refractory cement, and the ceramics, between the heat resisting material and the engine base material, and, which is made the capacity of the rotor recess small so that the compression ratio in which the compression ignition is possible may be obtained while the rotor recess is made a good burning form at the fuel injection, for the compression ignition rotary engine is enabled, and is made a difference in the expansion ratio and the compression ratio, and is enlarged the expansion ratio rather than the compression ratio, for the combustion chamber does not become high temperature too much.

71. (after amendment) It is an adiabatic compression ignition rotary engine which is put the heat resisting material, such as the heat resisting iron-base alloy, the heat resisting nickel base alloy, the heat resisting cobalt-base alloy, and the ceramics, on the rotor surface and the rotor-housing combustion chamber side, and is placed the heat insulator, such as the asbestos, the refractory cement, and the ceramics, between the heat resisting material and the engine base material, and, which is made a capacity of the rotor recess small so that the compression ratio in which the compression ignition is possible may be obtained while the rotor recess is made a good burning form at the fuel injection, for the compression ignition rotary engine is enabled, and is made a difference in the expansion ratio and the compression ratio, and is enlarged the expansion ratio rather than the compression ratio, for the combustion chamber does not become high temperature too much.

72. (after amendment) It is an adiabatic compression ignition rotary engine which is put the heat resisting material, such as the heat resisting iron-base alloy, the heat resisting nickel base alloy, the heat resisting cobalt-base alloy, and the ceramics, on the rotor surface and the rotor-housing combustion chamber side and the side-housing wall surface, and is placed the heat insulator, such as the asbestos, the refractory cement, and the ceramics, between the heat resisting material and the engine base material, and, which is made a capacity of the rotor recess small so that the compression ratio in which the compression ignition is possible may be obtained while the rotor recess is made a good burning form at the fuel injection, for the compression ignition rotary engine is enabled, and is made a difference in the expansion ratio and the compression ratio, and is enlarged the expansion ratio rather than the compression ratio, for the combustion chamber does not become high temperature too much.

73. (after amendment) It is an adiabatic compression ignition rotary engine which is put the heat insulator having heat resistant ability and having strength and having a certain amount of adiabatic performance, such as the heat resisting iron-base alloy, the heat resisting nickel-base alloy, and the ceramics, on the rotor surface, and, which is made a capacity of the rotor recess small so that the compression ratio in which the compression ignition is possible may be obtained while the rotor recess is made a good burning form at the fuel injection, for the compression ignition rotary engine is enabled, and is made a difference in the expansion ratio and the compression ratio, and is enlarged the expansion ratio rather than the compression ratio, for the combustion chamber does not become high temperature too much.

74. (after amendment) It is an adiabatic compression ignition rotary engine which is put the heat insulator having heat resistant ability and having strength and having a certain amount of adiabatic performance, such as the heat resisting iron-base alloy, the heat resisting nickel-base alloy, and the ceramics, on the rotor surface and the rotor-housing combustion chamber side, and, which is made a capacity of the rotor recess small so that the compression ratio in which the compression ignition is possible may be obtained while the rotor recess is made a good burning form at the fuel injection, for the compression ignition rotary engine is enabled, and is made a difference in the expansion ratio and the compression ratio, and is enlarged the expansion ratio rather than the compression ratio, for the combustion chamber does not become high temperature too much.

75. (after amendment) It is an adiabatic compression ignition rotary engine which is put the heat insulator having heat resistant ability and having strength and having a certain amount of adiabatic performance, such as the heat resisting iron-base alloy, the heat resisting nickel-base alloy, and the ceramics, on the rotor surface and the rotor-housing combustion chamber side and the side-housing wall surface, and, which is made a capacity of the rotor recess small so that the compression ratio in which the compression ignition is possible may be obtained while the rotor recess is made a good burning form at the fuel injection, for the compression ignition rotary engine is enabled, and is made a difference in the expansion ratio and the compression ratio, and is enlarged the expansion ratio rather than the compression ratio, for the combustion chamber does not become high temperature too much.

76. (after amendment) It is an adiabatic compression ignition rotary engine which is put the heat resisting material, such as the heat resisting iron-base alloy, the heat resisting nickel base alloy, the heat resisting cobalt-base alloy, and the ceramics, on the rotor surface and the rotor-housing combustion chamber side, and is placed the heat insulator, such as the asbestos, the refractory cement, and the ceramics, between the heat resisting material and the engine base material, and, which is made a capacity of the rotor recess small so that the compression ratio in which the compression ignition is possible may be obtained while the rotor recess is made a good burning form at the fuel injection, for a compression ignition rotary engine is enabled, and, which is made the compression ratio small in order to make a temperature at the time of the end of compression into 850'C or less on the combustion chamber surface, and is made a difference in the expansion ratio and the compression ratio, and is enlarged the expansion ratio rather than the compression ratio, for the combustion chamber does not become high temperature too much.

77. (after amendment) It is an adiabatic compression ignition rotary engine which is put the heat resisting material, such as the heat resisting iron-base alloy, the heat resisting nickel base alloy, the heat resisting cobalt-base alloy, and the ceramics, on the rotor surface and the rotor-housing combustion chamber side and the side-housing wall surface, and is placed the heat insulator, such as the asbestos, the refractory cement, and the ceramics, between the heat resisting material and the engine base material, and, which is made a capacity of the rotor recess small so that the compression ratio in which the compression ignition is possible may be obtained while the rotor recess is made a good burning form at the fuel injection, for the compression ignition rotary engine is enabled, and, which is made the compression ratio small in order to make a temperature at the time of the end of compression into 850*C or less on the combustion chamber surface, and is made a difference in the expansion ratio and the compression ratio, and is enlarged the expansion ratio rather than the compression ratio, for the combustion chamber does not become high temperature too much.

78. (after amendment) It is an adiabatic compression ignition rotary engine which is put the heat insulator having heat resistant ability and having strength and having a certain amount of adiabatic performance, such as the heat resisting iron-base alloy, the heat resisting nickel-base alloy, and the ceramics, on the rotor surface, and, which is made a capacity of the rotor recess small so that the compression ratio in which the compression ignition is possible may be obtained while the rotor recess is made a good burning form at the fuel injection, for the compression ignition rotary engine is enabled, and, which is made the compression ratio small in order to make a temperature at the time of the end of compression into 850*C or less on the combustion chamber surface, and is made a difference in the expansion ratio and the compression ratio, and is enlarged the expansion ratio rather than the compression ratio, for the combustion chamber does not become high temperature too much.

79. (after amendment) It is an adiabatic compression ignition rotary engine which is put the heat insulator having heat resistant ability and having strength and having a certain amount of adiabatic performance, such as the heat resisting iron-base alloy, the heat resisting nickel-base alloy, and the ceramics, on the rotor surface and the rotor-housing combustion chamber side, and, which is made a capacity of the rotor recess small so that the compression ratio in which the compression ignition is possible may be obtained while the rotor recess is made a good burning form at the fuel injection, for the compression ignition rotary engine is enabled, and, which is made the compression ratio small in order to make a temperature at the time of the end of compression into 850*C or less on the combustion chamber surface, and is made a difference in the expansion ratio and the compression ratio, and is enlarged the expansion ratio rather than the compression ratio, for the combustion chamber does not become high temperature too much.

80. (after amendment) It is an adiabatic compression ignition rotary engine which is put the heat insulator having heat resistant ability and having strength and having a certain amount of adiabatic performance, such as the heat resisting iron-base alloy, the heat resisting nickel-base alloy, and the ceramics, on the rotor surface and the rotor-housing combustion chamber side and the side-housing wall surface, and, which is made a capacity of the rotor recess small so that the compression ratio in which the compression ignition is possible may be obtained while the rotor recess is made a good burning form at the fuel injection, for the compression ignition rotary engine is enabled, and, which is made a compression ratio small in order to make a temperature at the time of the end of compression into 850'C or less on the combustion chamber surface, and is made a difference in the expansion ratio and the compression ratio, and is enlarged the expansion ratio rather than the compression ratio, for the combustion chamber does not become high temperature too much.