JPH0115686B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a completely novel cooling and lubricating device for a gear internal combustion engine that extracts power directly from rotational motion.

In conventional impeller-type gas turbines, it is difficult to cool the blades, which limits the temperature of the working gas, and it is also difficult to compress the working gas to a high degree, making it impossible to increase thermal efficiency. Therefore, in order to solve the above-mentioned problems, the present invention arranges an even number of operating gears, ie, four or more, in a ring shape, and utilizes the confinement phenomenon that occurs between the teeth of the meshing portions. In addition to generating high-pressure gas, the shaft of the operating gear is formed hollow and communicated with a lubricating oil pump.

Hereinafter, the present invention will be described in detail based on specific embodiments shown in the accompanying drawings. Six operating gears 1, 2, 3, 4, 5, and 6 are arranged in an annular manner so as to mesh with each other and are supported by an operating gear case 7.
The six operating gears 1, 2, 3, 4, 5, and 6 are arranged in a ring and mesh with each other, so there are six meshing points, three meshing points G I that mesh inward, and three meshing points G _I that mesh outward. There are three meshing points G _O that mesh with the inward meshing points.
G _I and outward engagement point G _O alternate. Further, the meshing point is the intersection of the straight line connecting the centers O between the operating gears and the reference pitch circle PC. A small gear 8 is carved on the shaft end of every other operating gear 1, 3, 5, and this small gear 8 is placed at the center of the annular operating gear 1, 2, 3, 4, 5, 6. It meshes with a large gear 10 fixed to the rear of a central main shaft 9 that passes through the center of the case 7.

The operating gear case 7 is arranged as close as possible to the outer and inner peripheries of the operating gears 1, 2, 3, 4, 5, and 6 arranged in an annular manner without coming into contact with the tips of the tooth parts, and has arcuate wall surfaces _11O , _11I. and each inward engagement point G _I
A radial exhaust passage 12 is formed in front of the exhaust hole 1.
Connects with 3.

A combustion block 14 is arranged in front of the operating gear case 7, and an intake hole 1 is provided on the rear wall of the combustion block 14.
5, 16, and 17 are carved to communicate with the rear of each inward meshing point G _I and the front end surface side of the operating gears 1, 2, 3, 4, 5, and 6.

Each outward engagement point on the rear wall of the combustion block 14
Special alloy base 1 with heat insulation in the part facing G _O
8 is buried to form spherical pre-combustion chambers 19, 20, 21 between the combustion block 14 and the combustion block 14. Further, a hemispherical heat-resistant material may be used for the inner surface of the pre-combustion chambers 19, 20, 21 on the combustion block 14 side. Intake hole 1
Due to the rotation of the operating gears 1, 2, 3, 4, 5, 6, the air taken in from the operating gears 1, 2, 3, 4, 5, and 6 flows through the arcuate wall surface _11I to the front of the outward meshing point _GO , and the operating gears 1, 2, It is trapped between the meshing teeth of 3, 4, 5, and 6 and compressed to high pressure. In order to guide this compressed air to the pre-combustion chambers 19, 20, 21, an air supply port 22 is opened in the rear wall surface of the combustion block 14 at a position shown in _FIG . We will communicate at In addition, although two air supply ports 22 are shown in FIG. 3, it may be one if necessary.

The combustion block 14 is provided with air-fuel mixture compression gear pumps 24, 25, 26 arranged near the central main shaft 9 and driven by the central main shaft 9, and these gear pumps 24, 25, 26 are opened to the side of the combustion block 14. The air intake port 27 and the air passage 28 communicate with each other, and a fuel passage 30 that is opened and closed by a needle valve 29 is opened in the middle of the air passage 28. A governor 31 fitted to the tip of the central spindle 9 is a coil spring 3
2, the combustion block 14
The head of the needle valve 29, which is biased forward by a coil spring 35, is brought into contact with the middle part of the lever 34, whose base end is pivotally connected to the governor cover 33, which is placed in front of the lever and covers the governor 31, etc. 34 is brought into contact with the back surface of the governor 31. When the rotation of the central main shaft 9 becomes faster, the governor 31 moves backward on the central main shaft 9 as the rotational speed increases, moves the needle valve 29 backward via the lever 34, and causes the air passage 28 of the fuel passage 30 to move backward. The fuel flow path at the opening is narrowed, resulting in less fuel supply. In this way, the gear pumps 24, 25, and 26 are driven while adjusting the amount of fuel relative to the air with the needle valve 29 to form a mixture of air and fuel, which passes through the compressed mixture passage 36 to the pre-combustion chamber 19. , 20, 21. The compressed mixture passage 36 is provided with a pressure regulating valve 37 near the pre-combustion chambers 19, 20, 21 to prevent combustion gas from flowing back toward the gear pumps 24, 25, 26. Force feed against the set pressure. Note that the gear pumps 24, 25, and 26 compress air and convey fuel using it, and have a constant capacity, and the amount of fuel to be supplied is adjusted by a needle valve 29. In addition, the compressed mixture passage 3 is used to ignite the compressed mixture injected into the pre-combustion chambers 19, 20, 21.
Glow plug 3 facing directly in front of the opening in 6.
Place 8, 39, 40. Gear pump 24, 2
5, 26, the compressed air-fuel mixture supplied against the set pressure of the pressure regulating valve 37 is constantly injected into the pre-combustion chambers 19, 20, 21, and is passed through the compressed air passage 23 to the operating gears 1, 26.
The compressed air that is injected with the rotation of 2, 3, 4, 5, and 6 becomes a vortex in the pre-combustion chambers 19, 20, 21, is ignited by the glow plugs 38, 39, 40, and the pre-combustion chambers 19, 20 are ignited. , 21 continues to burn at all times. The compressed air is injected into operating gears 1, 2,
The compressed mixture is injected into the pre-combustion chambers 19, 20, 21 the same number of times as the number of teeth by one rotation of 3, 4, 5, 6, but the compressed air-fuel mixture is always injected into the pre-combustion chambers 19, 20, 21 and the glow plug 38 , 39, 40, combustion continues at all times in the pre-combustion chambers 19, 20, 21. Combustion is more efficient than conventional internal combustion engines, which ignite each cycle and provide extra fuel to continue combustion.

The combustion gas in the pre-combustion chambers 19, 20, 21 is directed outward to the operating gears 1, 2, 3, 4, behind the meshing point _GO .
A combustion gas passage port 42 leading to the combustion chamber 41 formed between the tooth surfaces 5 and 6 is opened in the end face of the mouthpiece 18 behind the outward engagement point _GO , for example, as shown in FIG. to communicate. Although two combustion gas passage ports 42 are shown in FIG. 3, one may be provided if necessary, and the positional relationship with the air supply port 22 is such that the combustion gas passage port 42 is shown in FIG. The air supply port 22 is arranged so as to open after being closed by the end faces of the operating gears 1, 2, 3, 4, 5, and 6. However, the combustion gas passage port 42 and the air supply port 22 may be set to open at the same time with a slight overlap.

Combustion gas passage 4 from pre-combustion chambers 19, 20, 21
The combustion gas that has reached the combustion chamber 41 through the combustion chamber 3 expands and rotates the operating gears 1, 2, 3, 4, 5, and 6.
The expanded combustion gas is transferred to operating gears 1, 2, 3, 4,
5, 6 and the arcuate wall surface _11O to the exhaust passage 12, but the arcuate wall surface _11O is within the range where the tips of the teeth of the operating gears 1, 2, 3, 4, 5, and 6 do not come in contact with each other. Since they are formed close to each other, the exhaust passage 12
Assuming that the arc-shaped wall surface 11 _O reaches the arc-shaped wall surface 11 O, the expanded combustion gas moves between the arc-shaped wall surface 11 _O and the operating gears 1, 2, 3,
The operating gears 1 and 6 are operated in order to use the expanded combustion gas as dynamic energy because it does not operate as effective energy trapped between the gears 4, 5, and 6.
An exhaust jet flow path 44 is provided on the downstream side outside the tips of the teeth 2, 3, 4, 5, and 6.

This gear internal combustion engine has an operating gear case 7 and a combustion block 1 in order to facilitate the production of frames, cases, and covers that support, constitute, or cover functional parts.
4. The governor cover 33 and the flywheel cover 65 are divided into four parts, made of die cast, and the central main shaft 9 can be inserted therethrough so that they can be sequentially superimposed, and their joint surfaces are formed perpendicular to the central main shaft 9.

An annular exhaust pipe 46 having one exhaust port 45 is connected to the front of the operating gear case 7 so that the combustion gas is not exhausted from each exhaust hole 13 individually but from one location. Also, combustion block 1
An annular intake pipe 48 having one air intake port 47 is connected to the front of the main shaft 9 to take in air from the intake holes 15, 16, and 17 from one place. The air blowing efficiency of the fan 49 is improved by protruding so as to cover the fan 49 attached to the tip of the fan 49 and forming a cowling. Further, since the exhaust pipe 46 is arranged on the outside, it is preferable for heat radiation. Furthermore, since the fan 49 is located at the center of the front end of the device, cooling of the entire device is extremely easy.

50 and 51 are bearings of the central main shaft 9, 52 is a ring gear, and 53 is a starter motor.

In the gear internal combustion engine described above, when the starter motor 53 is driven, the central main shaft 9 rotates via the ring gear 52 and the flywheel 54 attached to the rear end of the main shaft 9.
2, 3, 4, 5, and 6 rotate and start. The combustion gas is discharged from the exhaust passage 12, exhaust hole 13, exhaust pipe 46, and exhaust port 45 in front of the inward meshing point G _I of the operating gears 1, 2, 3, 4, 5, and 6, and the combustion gas is discharged from the inward meshing point G I.
_{G _} The air flows outward to the front of the meshing point G _O , is trapped between the meshing teeth of the operating gears 1, 2, 3, 4, 5, and 6, is compressed, becomes high pressure, and passes through the compressed air passage 23, where it is pre-combusted. Room 19,2
0,21 and becomes a vortex. On the other hand, the mixture of air and fuel formed by the gear pump 24 is injected into the pre-combustion chambers 19, 20, 21 through the passage 36, mixed with the air vortex, and is mixed with the glow plugs 38, 3.
9 and 40, and the combustion continues constantly, and the passage 43
The combustion gas injects into the combustion chamber 41 and expands, rotating the operating gears 1, 2, 3, 4, 5, and 6. Furthermore, when the combustion gas passes through the flow path 44, the jet flow causes the operating gears 1, 2, Rotate 3, 4, 5, and 6 to reach passage 1
2. The power generated in the operating gears 1, 2, 3, 4, 5, and 6 is transmitted to the central main shaft 9 via a small gear 8 and a large gear 10.

For cooling and lubrication, a lubricating oil pump 55, which is an internal gear pump, is provided in the operating gear case 7 of the central main shaft 9. This lubricating oil pump 55 has a central main shaft 9 as a driving shaft, a pinion 56 is attached to the central main shaft 9, and an internal gear 57 is engaged with the pinion 56 eccentrically.
8 to form an oil suction port 59 and a discharge port 60. The shafts 61 of the operating gears 1, 2, 3, 4, 5, 6 are connected to the hollow 6
2, a small diameter oil hole 63 is opened on the end face side of the operating gears 1, 2, 3, 4, 5, 6, and the hollow 62 part and the operating gears 1, 2, 3, 4, 5, 6 are formed in the shaft 61. An oil hole 64 communicating with the shaft bearing part is provided through the shaft. In the hollow 62, the teeth and the large diameter part of the shaft 61 are made large so as to be suitable for cooling the operating gears 1, 2, 3, 4, 5, 6, and the operating gears 1, 2, 6 are cooled by hydraulic pressure from the lubricating oil pump 55.
Combustion block 14 with 3, 4, 5, 6 end faces facing each other
Form into a shape suitable for pressing against the rear wall surface. Also,
The hollow 62 also includes a conduit (not shown) disposed therein for guiding lubricating oil. Although the shafts 61 of the operating gears 1, 2, 3, 4, 5, and 6 are shown integrally formed in this embodiment, they are not limited to this and may be formed separately. An oil hole 66 drilled in the thickness of a flywheel cover 65 that covers the flywheel 54 attached to the rear end of the central main shaft 9, an axial oil hole 67 in the thickness of the operating gear case 7, and an oil hole 67 in the circumferential direction. It is connected to a lubricating oil pump 55 and an oil tank 70 through oil holes 68 and 69.

When the central main shaft 9 rotates, the pinion 56 of the lubricating oil pump 55 also meshes with the internal gear 57 and rotates, sucking up lubricating oil from the oil tank 70 through the oil hole 69 and the oil suction port 59 to the lubricating oil pump 55, and pumping it into the lubricating oil pump 55 through the oil outlet 60. , oil hole 68 , oil hole 67 , oil hole 66 , operating gear 1 ,
It is supplied to 62 hollow parts of 2, 3, 4, 5, and 6. With this lubricating oil, the operating gears 1, 2, 3, 4, 5, 6
is cooled. In addition, the lubricating oil is applied to the operating gears 1, 2,
3, 4, 5, and 6 are pressed toward the rear wall surface of the combustion block 14, and the lubricating oil enters between the rear wall surface of the combustion block 14 and the end surfaces of the operating gears 1, 2, 3, 4, 5, and 6. to ensure lubrication between the two, as well as the intake hole 1.
5, 16, 17 and actuating gears 1, 2,
The compressed air trapped between the teeth 3, 4, 5, and 6 is injected into the compressed air passage 23, and the combustion gas in the pre-combustion chambers 19, 20, and 21 is expanded to form the combustion gas passage. 43 and into the combustion chamber 41, the rear wall of the combustion block 14 and the operating gears 1, 2,
3, 4, 5, and 6 end faces are sealed. Furthermore, the lubricating oil passes through the oil hole 64 to the operating gears 1, 2, 3, 4,
The lubricating oil reaches the bearing portions 5 and 6 and lubricates them, and the lubricating oil flows back into the oil tank 70 (recirculation oil path not shown).

The above description has been about an embodiment in which six working gears with the same diameter are arranged in an annular manner and mesh with each other, but the present invention can be applied as long as the working gears are an even number of four or more, and even if they are not the same diameter. Furthermore, power can be extracted not only from the central main shaft disposed at the center but also from an internal gear or the like in which the operating gear is inscribed. Furthermore, the rear of the inward meshing point of the operating gear can be communicated not only with air but also with an air/fuel mixture generating device.

As described above, the present invention generates high-pressure gas by arranging an even number of operating gears of four or more in a ring shape and utilizing the confinement phenomenon that occurs between the teeth of the meshing part. In addition, a hollow part is formed in the shaft of the operating gear, and lubricating oil can be supplied there to cool the operating gear, making it possible to use high-temperature, high-pressure gas and increasing thermal efficiency as much as possible. It is possible to reduce fuel consumption. Further, an oil hole communicating with the hollow portion is opened in the end face of the operating gear to supply lubricating oil, so that the end face of the operating gear is pressed against the opposing wall surface to lubricate and seal the gap between the end face of the operating gear and the wall surface. The operating gears are cooled by the lubricating oil. In addition, the lubricating oil presses the operating gear toward the rear wall of the combustion block, and the lubricating oil enters between the rear wall of the combustion block and the end of the operating gear to lubricate the two, and is sucked in through the intake hole. The compressed air trapped between the teeth of the working gear is injected into the compressed air passage, and the combustion gas in the pre-combustion chamber is expanded and ejected into the combustion chamber via the combustion gas passage, causing combustion. The rear wall of the block and the end of the operating gear are sealed. Since the inflow of compressed air and combustion gas can be blocked with lubricating oil, it is possible to design the engine accordingly, making the engine more compact. Furthermore, lubricating oil flows into the oil hole of the shaft that communicates with the shaft bearing of the operating gear to sufficiently lubricate that part.

This gear internal combustion engine has no reciprocating parts and can rotate at high speeds, and is vibration-free, lightweight, and compact, making it possible to provide a low-cost internal combustion engine. Additionally, unlike conventional reciprocating engines, there are fewer sliding parts that are exposed to exhaust gas, resulting in improved durability. Furthermore, since conventional internal combustion engines have intermittent combustion, it is necessary to ignite each cycle to continue combustion, which requires a large amount of fuel, and there is a limit to how much fuel can be reduced.However, the present invention uses continuous combustion, which makes it possible to reduce fuel supply. The continuous combustion reduces exhaust noise, eliminates the need for fuel injection pumps, nozzles, magnets, coils, etc., and simplifies the structure, making it possible to provide a low-cost internal combustion engine.

[Brief explanation of drawings]

1 is a front view of a specific embodiment of the present invention, FIG. 2 is a side sectional view of FIG. 1, and FIG. 3 is an enlarged front view of the main part of FIG. 1. 1, 2, 3, 4, 5, 6... Operating gear, G _I ... Inward meshing point, G _O ... Outward meshing point, 61... Shaft, 6
2...Hollow, 63...Oil hole, 55...Lubricating oil pump.

Claims (1)

[Claims] 1 An even number of 4 or more working gears are arranged in a ring and mesh with each other, and exhaust and intake air is performed at the meshing part where the working gears mesh inwardly, and the teeth are moved to an appropriate position in front of the outward meshing point. Forms an arcuate wall surface for sealing as close as possible without contacting the tip of the part, and is trapped between the teeth meshing near the outward meshing point in front of the outward meshing point. An air supply port for guiding compressed gas is opened, the air supply port and the pre-combustion chamber are communicated with each other, and a combustion gas passage port is opened behind the outward meshing point and near the outward meshing point, so that the combustion gas passage port and the pre-combustion chamber communicate with each other. In a gear internal combustion engine that communicates with the combustion chamber and performs compression, explosion, and expansion at the meshing part where the operating gear meshes outward, the shaft of the operating gear is formed hollow and an oil hole is formed on the end face of the operating gear. The hollow portion is opened and communicated with the lubricating oil pump, and the end face of the operating gear is brought into contact with the wall face in which the opposing air supply port and the combustion gas passage opening are opened by the hydraulic pressure of the lubricating oil, between the end face of the operating gear and the wall face. A cooling and lubricating device for geared internal combustion engines that lubricates and seals the engine.