CN201180592Y

CN201180592Y - Gas engine

Info

Publication number: CN201180592Y
Application number: CNU2008200446648U
Authority: CN
Inventors: 谭目坤
Original assignee: ZHONGSHAN WEISHENG METALLIC PRODUCTS CO Ltd
Current assignee: Zhongshan xinligao Tool Industry Co Ltd
Priority date: 2008-03-04
Filing date: 2008-03-04
Publication date: 2009-01-14
Anticipated expiration: 2018-03-04

Abstract

The utility model discloses a gas engine which comprises an engine body. A combustion chamber is arranged in the engine body; a mixed gas inlet and an exhaust opening which can communicate with the combustion chamber are arranged on the engine body; and a starter and a magnet motor which are connected with a crankshaft in the engine body, an igniter connected with the magnet motor, as well as a silencer connected with the exhaust opening on the engine body are also arranged on the engine body. The gas engine is characterized in that a controller which can perform pressure reduction on high-pressure gas and introduce the gas mixture of the low-pressure gas after pressure reduction and the air into the inlet of the mixer is arranged on the engine body; and a start enriching device which can quicken the engine start, an idle speed control device which can adjust the engine idle speed, and a throttle control device which can adjust the engine power are arranged on the controller. The gas engine can quickly start from the idle speed and has the advantages of convenient operation, quick start, stable idle speed and good speed increasing performance.

Description

A kind of gas engine

[technical field]

The utility model relates to engine art, is specifically related to a kind of gas engine.

[background technique]

Motor is called engine again, is a kind ofly can normally be converted into mechanical energy to the machine of the another kind of more useful energy of being converted into of a kind of form to chemical energy.Sometimes it both had been applicable to power generating apparatus, also can refer to comprise the entire machine of power plant.Motor can comprise fuel engine and gas engine, and along with riseing of market oil price, the cost of petrol engine is more and more higher, and is also very big to atmospheric pollution simultaneously.As the power equipment of a kind of not only economy but also environmental protection, gas engine more and more is subjected to people's approval, has been widely used in the every profession and trades such as power, generating.The principle of gas engine is: be injected to ignition acting in the cylinder of gas engine after combustion gas and combustion-supporting air mix in mixer, chemical energy is converted into mechanical energy output; Motor has two kinds of running statees, and a kind of is normal working, and promptly motor is worked under load, and another kind is idle running, i.e. idling mode.Because fuel gas source generally all is a storage of higher pressures, the method that people adopt mostly is on the suction tude of gas engine mixer is set, after being mixed in mixer, combustion gas and combustion-supporting air be injected in the firing chamber, there is bigger gap in the flow velocity of its flow velocity and combustion-supporting air behind the mixer because of combustion gas sprays into, it is not very even causing combustion gas and combustion-supporting air to mix, influence the proper functioning of gas engine, reduced the working efficiency of gas engine.Motor is before starting, substantially there are not combustion gas and combustion-supporting air in its firing chamber, and need a certain amount of combustion gas and combustion-supporting air during ato unit, so just caused the engine start difficulty, had air-breathing, compression, burning and the single body of degassing function and existing gas engine generally all is one.The utility model is developed and is developed under a kind of like this background.

[model utility content]

The purpose of this utility model provides a kind of gas engine, it has overcome the deficiency of above-mentioned technology, by on body, connecting a controller, on controller, be provided with and accelerate the startup enrichment-system of engine start, the idle speed controller of can regulate engine idle, the air throttle control device of can regulate engine power, gas engine is started fast, idling is steady, and speed-raising property is good.

For achieving the above object, the utility model has adopted following technical proposal:

A kind of gas engine includes body, is provided with the firing chamber in it, and body is provided with and can enters the mouth and relief opening with the mixed gas of firing chamber conducting; Also be provided with on the body starter that is connected with the body inside crankshaft and magnetogenerator, the igniter that is connected with magnetogenerator, with the silencing apparatus that the body relief opening is connected, it is characterized in that described body is provided with the controller that high-pressure gas can be reduced pressure, post-decompression low-pressure fuel gas and air mixing can be fed described mixed gas inlet; Controller is provided with the startup enrichment-system that can accelerate engine start, the idle speed controller of can regulate engine idle, the air throttle control device of can regulate engine power.

A kind of gas engine from the above mentioned is characterized in that the mixed gas outlet that described controller is provided with air suction inlet, high-pressure gas inlet and is connected with mixed gas inlet on the described body; Air suction inlet can with the mixed gas outlet conducting; Be provided with in the controller can with the enter the mouth relief chamber of conducting of high-pressure gas; A relief chamber and a decompression outlet passageway are connected, mixed gas outlet can with a main valve air supply channel conducting, reduce pressure to be provided with between outlet passageway and the main valve air supply channel and can realize both conductings and first switching mechanism of closing; Described startup enrichment-system is arranged between relief chamber and the mixed gas outlet; Described idle speed controller, air throttle control device all are arranged between main valve air supply channel and the mixed gas outlet.

A kind of gas engine from the above mentioned, it is characterized in that the lever that is hinged with in the described relief chamber, lever one end is provided with the high-pressure gas that can seal in the high-pressure gas inlet and enters the interior reduced pressure sealing pad of relief chamber, the lever the other end is connected with pressure adjusting spring, the pressure adjusting spring the other end leans on a pressure regulation plug screw, and the pressure regulation plug screw is threaded with described controller; One reduces pressure the elastomer diaphragm rivet clasp between lever and pressure adjusting spring, and is tightly connected with relief chamber by its periphery.

A kind of gas engine from the above mentioned, it is characterized in that being provided with in the described controller cavity, described first switching mechanism comprises the seal membrane of being located in the cavity of giving vent to anger, and the seal membrane of giving vent to anger is tightly connected with cavity by its periphery and cavity is spaced apart two-part up and down of not conducting; Also be provided with in the cavity:

One diaphragm return spring is connected the described seal membrane upside of giving vent to anger, and the diaphragm return spring the other end is fixed in the cavity on top;

One sealing gasket of giving vent to anger is connected the described seal membrane downside of giving vent to anger;

One sealing seat of giving vent to anger that can cooperate the conducting of give vent to anger sealing gasket control decompression outlet passageway and main valve air supply channel and close is arranged in the cavity of the described seal membrane downside of giving vent to anger, between described decompression outlet passageway and the main valve air supply channel;

The one diaphragm vacuum passage of giving vent to anger, the one end is connected with the cavity of the seal membrane upside of giving vent to anger, the other end and mixed gas outlet connection.

A kind of gas engine from the above mentioned, it is characterized in that described startup enrichment-system includes the startup enriching passage of being located at interior conducting mixed gas outlet of controller and relief chamber, starts the enriching flow control valve that the enriching passage is provided with its interior low-pressure fuel gas flow of can regulate; Also comprise the guide channel of being located on the controller, the guide channel upper end is provided with an end cap, is provided with in the guide channel and can be socketed with pressure spring on the enriching valve rod along the enriching valve rod of its slip, and the pressure spring the other end leans on end cap; End cap is provided with the through hole that can supply the enriching valve rod to slide up and down; The enriching valve rod is provided with when it slides can open described startup enriching passage, can seal the upgrading valve sealing gasket that starts the enriching passage when resetting.

A kind of gas engine from the above mentioned, it is characterized in that described idle speed controller includes the idling air supply channel of being located between described controller main valve air supply channel and the mixed gas outlet, also be provided with the idling flow control valve of its interior low-pressure fuel gas flow of can regulate on the idling air supply channel.

A kind of gas engine from the above mentioned, it is characterized in that described air throttle control device includes is located at pilot hole on the controller, be provided with in the pilot hole can slide along it, may command enters the valve needle of gas flow in the mixed gas outlet by the main valve air supply channel, the valve needle is provided with may command main valve air supply channel and mixed gas outlet conducting and the valve base sealing pad of closing; The valve needle the other end is provided with the needle Returnning spring.

A kind of gas engine from the above mentioned, but it is characterized in that also being provided with on the described described controller plasmas channel of the described seal membrane downside cavity of giving vent to anger in outer atmosphere of conducting controller and the controller.

A kind of gas engine from the above mentioned is characterized in that described underpart is connected with a fitting seat, and fitting seat is provided with a combustion gas storage device, and the combustion gas storage device is connected by a high-pressure gas inlet that connects tracheae and described controller.

The beneficial effects of the utility model are:

1, directly on the body of motor, connect a controller, reduced connecting line, quick for installation, convenient; Make it have excellent sealing performance simultaneously, during engine operation, gas is in complete sealing state, has guaranteed safety and personal safety that combustion gas is used;

2, by relief chamber is set on controller, can reduce pressure, help mixing with combustion-supporting air to entering the combustion gas of controller inner high voltage, improve the combustion efficiency of combustion gas, thereby improve the working efficiency of gas engine, reduce the cost that uses combustion gas, engine power reaches the regulation requirement fully;

3, by the startup enrichment-system is set on controller, start gas engine before, can carry a certain amount of combustion gas and combustion-supporting air toward motor by starting enrichment-system, help motor and start fast, have the good advantage of startability;

4, by on the gas engine controller controller, air throttle control device being set, can realize the gas engine under the load condition is controlled, speed-raising property is good, and is not flame-out; Simultaneously, be provided with idling air supply channel and idling flow control valve, idling is steady, need not strengthen valve during startup, is directly started by idling, and is easy to operate.

5, because be provided with relief chamber, startup enrichment-system and air throttle control device on the gas engine controller controller, a machine can be realized decompression, mix, starts three functions of enriching.

[description of drawings]

Be described in further detail below in conjunction with accompanying drawing and mode of execution of the present utility model:

Fig. 1 is a plan view of the present utility model;

Fig. 2 is an exploded perspective view of the present utility model;

Fig. 3 is a body and the situation that is connected of controller and the partial cutaway schematic of organism internal structure in the utility model;

Fig. 4 is the schematic perspective view one of the utility model middle controller;

Fig. 5 is the decomposing schematic representation of the utility model middle controller housing;

Fig. 6 is the plan view of the utility model middle controller;

Fig. 7 be among Fig. 6 A-A to compound sectional view;

Fig. 8 be among Fig. 6 B-B to partial sectional view;

Fig. 9 be among Fig. 6 C-C to partial sectional view;

Figure 10 is the worm's eye view of the utility model middle controller bottom;

Figure 11 be among Figure 10 F-F to sectional view;

Figure 12 be among Figure 10 E-E to sectional view;

Figure 13 be among Figure 10 G-G to partial sectional view;

[embodiment]

As shown in Figure 1 to Figure 3, a kind of gas engine includes body 1, is with protective housing 90 on the body 1, is provided with firing chamber 2 in the body 1, body 1 be provided with can with the mixed gas of firing chamber 2 conductings inlet 3 and relief opening 77; The silencing apparatus 7 that also be provided with the starter 4 that is connected with body 1 inside crankshaft 75 and magnetogenerator 5, the igniter 6 that is connected with magnetogenerator 5 on the body 1, is connected with relief opening 77, silencing apparatus 7 is provided with muffler cover 74; Mixed gas 3 places that enter the mouth are sealedly connected with an air inlet fitting 73, air inlet fitting 73 is provided with and the enter the mouth gas channel 721 of 3 conductings of mixed gas, be sealedly connected with on the air inlet fitting 73 high-pressure gas can be reduced pressure, can be with the controller 8 of post-decompression low-pressure fuel gas and air mixing.

Shown in Fig. 4,5, controller 8 includes the housing 801 that lower cover 81, the seat of honour 82 and side cover 83 are formed, it is fastening that the lower cover 81 and the seat of honour 82, the seat of honour 82 and side cover 83 all pass through bolt 71, and the seat of honour 82 is provided with air suction inlet 12, high-pressure gas inlet 13 and mixed gas outlet 14 (as shown in Figure 8); Also be provided with the empty filter 72 (as Fig. 1, shown in Figure 3) that air suction inlet 12 can be covered on the seat of honour 82, the seat of honour 82 is provided with air suction inlet 12 is connected, internal diameter is bigger primary air passage 46 and the secondary air passageways 47 that internal diameter is less, high-pressure gas 13 places that enter the mouth are connected with pipe coupling 48; As shown in Figure 3, body 1 bottom is connected with a fitting seat 43, and fitting seat 43 is provided with a combustion gas storage device 44, and combustion gas storage device 44 is connected by the enter the mouth pipe coupling 48 at 13 places of a high-pressure gas that connects tracheae 45 and controller 8.

To shown in Figure 9, controller 8 is provided with the startup enrichment-system 9 that can accelerate engine start, the idle speed controller 10 of can regulate engine idle, the air throttle control device 11 of can regulate engine power as Fig. 7.

As shown in Figure 7, the seat of honour 82 is provided with a relief chamber 15, its can with high-pressure gas 13 conductings that enter the mouth; One lever 19 is hinged in the relief chamber 15 by lever shaft 49, lever 19 1 ends are provided with reduced pressure sealing pad 20, lever 19 the other ends are connected with a hook 50, riveted joint has decompression elastomer diaphragm 23 and spring seat 51 on the hook 50, decompression elastomer diaphragm 23 crampings between the seat of honour 82 and side cover 83, with relief chamber 15 be divided into do not communicate about two parts; Spring seat 51 is provided with a pressure adjusting spring 21, and pressure adjusting spring 21 the other ends lean on a pressure regulation plug screw 22, and pressure regulation plug screw 22 is threaded with side cover 83.

As Fig. 7, Fig. 8, shown in Figure 12, relief chamber 15 is connected with a decompression outlet passageway 16, and decompression outlet passageway 16 is divided into two sections, and one section is arranged on the lower cover 81, and another section is arranged on the seat of honour 82, and two sections passages are provided with " O " shape seal ring 53 in the joint.

As Fig. 8, shown in Figure 11, a main valve air supply channel 17, it can be connected with mixed gas outlet 14, and main valve air supply channel 17 is divided into two sections, and one section is arranged on the lower cover 81, and another section is arranged on the seat of honour 82, and two sections passages are provided with " O " shape seal ring 59 in the joint; Be provided with first switching mechanism 18 that the low-pressure fuel gas in the may command decompression outlet passageway 16 passes through between main valve air supply channel 17 and the decompression outlet passageway 16;

As shown in Figure 8, first switching mechanism 18 comprises the cavity 80 that is surrounded by the lower cover 81 and the seat of honour 82, one sliding sleeve 56 of giving vent to anger is installed in the cavity 80 on the lower cover 81, is socketed with the sealing plug 58 that can slide up and down in the sliding sleeve 56 of giving vent to anger, sealing plug 58 be provided with can with the seal ring 57 of sliding sleeve 56 sealings of giving vent to anger; One seal membrane 24 of giving vent to anger is fixed on the sealing plug 58 by tightening nut 55, and cramping is spaced apart cavity 80 two parts up and down that do not communicate between the seat of honour 82 and lower cover 81; Also be provided with a spring seat 54, one diaphragm return springs 25 lower ends on the sealing plug 58 and be installed on the spring seat 54, its upper end is fixed in the cavity 80 of upside; Sealing plug 58 lower ends are provided with the sealing gasket 26 of giving vent to anger, and are provided with the sealing seat 27 of giving vent to anger between decompression outlet passageway 16 on the lower cover 81 and the main valve air supply channel 17; The sealing seat 27 of giving vent to anger can cooperate the conducting of give vent to anger sealing gasket 26 control decompression outlet passageways 16 and main valve air supply channel 17 and close; The seat of honour 82 is provided with the diaphragm vacuum passage 28 of giving vent to anger, and the one end connects the cavity 80 of diaphragm return spring 25 places one side, and the other end connects mixed gas outlet 14.

As shown in Figure 9, include the startup enriching passage 29 of being located at controller 8 interior conducting mixed gas outlets 14 and relief chamber 15, start the enriching flow control valve 30 that enriching passage 29 is provided with its interior low-pressure fuel gas flow of can regulate but start enrichment-system 9; Also comprise the guide channel of being located on the seat of honour 82 31, its upper end is provided with an end cap 32, is provided with in the guide channel 31 and can be socketed with pressure spring 34 on the enriching valve rod 33 along the enriching valve rod 33 of its slip, and pressure spring 34 the other ends lean on end cap 32; End cap 32 is provided with the through hole that can supply enriching valve rod 33 to move up and down, and the end that enriching valve rod 33 stretches out end cap 32 is connected with enriching setting sleeve 68 by pin 67; Also be provided with " O " shape seal ring 69 on the enriching valve rod 33 with guide channel 31 sealings; Enriching valve rod 33 lower ends are provided with when it slides can open described startup enriching passage 29, can seal the upgrading valve sealing gasket 35 that starts enriching passage 29 when resetting.

As shown in Figure 8, air throttle control device 11 is located between main valve air supply channel 17 and the mixed gas outlet 14, enters flow in the mixed gas outlet 14 with the low-pressure fuel gas in the restriction main valve air supply channel 17;

Air throttle control device 11 includes the pilot hole of being located on the seat of honour 82 38, is provided with the sliding plug 62 of valve that can slide up and down in the pilot hole 38, and the sliding plug of valve 62 upper ends are connected with a backguy joint 63, are connected with backguy 66 on the backguy joint 63; The sliding plug of valve 62 lower ends are connected with a tapered valve needle 39, and valve needle 39 is provided with valve base sealing pad 40, but is provided with the valve seat insert 60 that air feed family of power and influence pin 39 tapering parts pass through between main valve air supply channel 17 and the mixed gas outlet 14; Backguy joint 63 upper ends are connected with a needle Returnning spring 41, and needle Returnning spring 41 the other ends lean on the sliding gag 64 of the valve that is connected with the seat of honour 82, are provided with valve backguy spindle nose 65 in the sliding gag 64 of valve.

As shown in Figure 7, idle speed controller 10 includes is located at the idling air supply channel 36 between the main valve air supply channel 17 and mixed gas outlet 14 on the seat of honour 82, also is provided with the idling flow control valve 37 of can regulate low-pressure fuel gas flow in it on the idling air supply channel 36.

As Fig. 5, Fig. 8, shown in Figure 13, but also be provided with the plasmas channel 42 of described give vent to anger sealing gasket 26 and the cavity 80 between the seal membrane 24 of giving vent to anger in conducting atmosphere and the lower cover 81 on the lower cover 81 and the seat of honour 82.The purpose that plasmas channel 42 is set is for diaphragm return spring 25 is resetted when motor is not worked.

In the utility model, when the sliding plug 62 of the valve in the air throttle control device 11 upwards slides, primary air passage 46 is connected mixed gas outlets 14, and when the needle Returnning spring 41 in the air throttle control device 11 resetted, the sliding plug of valve 62 was sealed primary air passage 46; Secondary air passageways 47 can be directly and mixed gas outlet 14 conductings, and idling air supply channel 36 all is connected in the secondary air passageways 47 with startup enriching passage 29.

The control principle of controller 8 of the present utility model can the trend in controller 8 illustrate by air and combustion gas.Air enters the seat of honour 82 by air suction inlet 12, can enter primary air passage 46 and secondary air passageways 47 then, the air that enters in the primary air passage 46 need could flow to mixed gas outlet 14 through air throttle control device 11, the air that enters in the secondary air passageways 47 can directly flow to mixed gas outlet 14, enters in the engine chamber 2 through link 73 again.

High-pressure gas is provided by combustion gas storage device 44, enter the seat of honour 82 by high-pressure gas inlet 13, enter relief chamber 15 after opening reduced pressure sealing pad 20, through relief chamber 15 post-decompression low-pressure fuel gas two kinds of trends are arranged, a kind of is by starting the air mixing in enriching passage 29 and enriching flow control valve 30 and the secondary air passageways 47, flowing to mixed gas outlet 14 again in link 73 enters engine chamber 2; Another kind is to flow to first switching mechanism 18 through decompression outlet passageway 16.

Low-pressure fuel gas through first switching mechanism 18 has two kinds of trends again, a kind of is to flow to air throttle control device 11 through main valve air supply channel 17, flows out mixed gas outlet 14 after low-pressure fuel gas by air throttle control device 11 and the air mixing in the primary air passage 46 again in link 73 enters engine chamber 2; Another kind of trend is by the air mixing in idling air supply channel 36, idling flow control valve 37 and the secondary air passageways 47, leads to mixed gas outlet 14 more again in link 73 enters engine chamber 2.

Control procedure of the present utility model is:

With reference to shown in Figure 8, before the utility model was started working, the sealing gasket 26 of giving vent to anger in first switching mechanism 18 cooperated with the sealing seat 27 of giving vent to anger under the effect of diaphragm return spring 25, and the outlet passageway 16 that will reduce pressure disconnects with main valve air supply channel 17; With reference to figure 7, high-pressure gas is entered by high-pressure gas inlet 13, lever 19 rotates around lever shaft 49 under the pressure effect of high-pressure gas, reduced pressure sealing pad 20 rotates with lever 19 and leaves the seat of honour 82, pressure adjusting spring 21 is stretched, so high-pressure gas enters into relief chamber 15, increase along with gaseous-pressure in the relief chamber 15, force pressure adjusting spring 21 compressions again, pressure adjusting spring 21 resets gradually, and promotes lever 19 rotations, when the gaseous-pressure in entering reduction valve 15 equates with the pressure of pressure adjusting spring 21, reduced pressure sealing pad 20 is sealed the high-pressure gas import, so pressurized gas have been finished decompression process in relief chamber 15.Regulate pressure regulation plug screw 22, can obtain the delivery pressure that needs.

With reference to shown in Figure 8, ato unit, the vacuum that the cylinder piston motion produces is through the diaphragm vacuum passage 28 of giving vent to anger, enter into seal membrane 24 tops of giving vent to anger, seal membrane 24 bottoms of giving vent to anger communicate with atmosphere, there is pressure reduction in seal membrane 24 both sides owing to give vent to anger, use hermetic seal diaphragm 24 and drive sealing plug 58 risings, compress diaphragm return spring 25 simultaneously, at this moment, the sealing gasket 26 of giving vent to anger of sealing plug 58 lower ends leaves the sealing seat 27 of giving vent to anger, first switching mechanism 18 is opened, so decompression outlet passageway 16 is connected with main valve air supply channel 17, the low-pressure fuel gas body that is come by relief chamber 15 streams enters in the main valve air supply channel 17 through decompression outlet passageway 16.

At this moment, because of air throttle control device 11 is in closed condition, so, low-pressure fuel gas in the main valve air supply channel 17 enters in the idling air supply channel 36, after the certain tolerance of idling flow control valve 37 adjustings, low-pressure fuel gas flows to mixed gas outlet 14 again in link 73 enters engine chamber 2 through secondary gas passage 47 with air;

Because of upgrading valve sealing gasket 35 has been closed startup enriching passage 29 under the effect of pressure spring 34, for motor is started fast, pulling enriching setting sleeve 68, enriching setting sleeve 68 drives enriching valve rod 33 and rises, so open enriching passage 29, low-pressure fuel gas is entered in the secondary air passageways 47 and air mixing by enriching passage 29, then by mixed gas outlet 14 again in link 73 enters engine chamber 2, so under idling mode, work behind the engine start, regulate idling flow control valve 30, can change the state of idling.

When motor is in load operation, its power is by manual tune, with reference to shown in Figure 8, when pulling backguy 66, the sliding plug 62 of valve drives valve needle 39 and rises, and main valve air supply channel 17 is opened, and primary air passage 46 is also opened, by mixed gas outlet 14 ejections, enter in the engine chamber 2 after combustion gas and the air mixing; Because valve needle 39 is tapered, the sliding plug 62 of valve promotes high more, and the gap between valve needle 39 and the valve seat insert 60 is big more, and the combustion gas increase is many more, and engine power is just big more; Otherwise power is more little.

When putting down the sliding plug of valve 62, main valve air supply channel 17 is closed, and motor will move with idling operation.

Behind engine shutdown, owing to there is not vacuum signal, the seal membrane 24 of giving vent to anger is closed decompression outlet passageway 16 under diaphragm return spring 25 effects, and combustion gas is cut off, and combustion gas can not enter in the engine chamber 2.

Claims

1, a kind of gas engine includes body (1), is provided with firing chamber (2) in it, and body (1) is provided with can enter the mouth with the mixed gas of firing chamber (2) conducting (3) and relief opening (77); Also be provided with the starter (4) that is connected with body (1) inside crankshaft (75) on the body (1) with magnetogenerator (5), the igniter (6) that is connected with magnetogenerator (5), go up the silencing apparatus (7) that relief opening (77) is connected, it is characterized in that described body (1) is provided with high-pressure gas to be reduced pressure, post-decompression low-pressure fuel gas and air mixing can be fed the enter the mouth controller (8) of (3) of described mixed gas with body (1); Controller (8) is provided with the startup enrichment-system (9) that can accelerate engine start, the idle speed controller (10) of can regulate engine idle, the air throttle control device (11) of can regulate engine power.

2, a kind of gas engine according to claim 1 is characterized in that the mixed gas outlet (14) that described controller (8) is provided with air suction inlet (12), high-pressure gas inlet (13) and is connected with mixed gas inlet (3) on the described body (1); Air suction inlet (12) can with mixed gas outlet (14) conducting; Be provided with the relief chamber (15) of (13) conducting that can enter the mouth with high-pressure gas in the controller (8); Relief chamber (15) is connected with a decompression outlet passageway (16), mixed gas outlet (14) can with main valve air supply channel (a 17) conducting, be provided with first switching mechanism (18) that can realize both conductings and close between decompression outlet passageway (16) and the main valve air supply channel (17); Described startup enrichment-system (9) is arranged between relief chamber (15) and the mixed gas outlet (14); Described idle speed controller (10), air throttle control device (11) all are arranged between main valve air supply channel (17) and the mixed gas outlet (14).

3, a kind of gas engine according to claim 2, it is characterized in that being hinged with a lever (19) in the described relief chamber (15), lever (19) one ends are provided with the high-pressure gas that can seal in the high-pressure gas inlet (13) and enter the interior reduced pressure sealing pad (20) of relief chamber (15), lever (19) the other end is connected with pressure adjusting spring (21), pressure adjusting spring (21) the other end leans on a pressure regulation plug screw (22), and pressure regulation plug screw (22) is threaded with described controller (8); One reduces pressure elastomer diaphragm (23) rivet clasp between lever (19) and pressure adjusting spring (21), and is tightly connected with relief chamber (15) by its periphery.

4, a kind of gas engine according to claim 2, it is characterized in that being provided with in the described controller (8) cavity (80), described first switching mechanism comprises the seal membrane of being located in the cavity (80) of giving vent to anger (24), and the seal membrane of giving vent to anger (24) is tightly connected with cavity (80) by its periphery and cavity (80) is spaced apart two-part up and down of not conducting; Cavity also is provided with in (80):

One diaphragm return spring (25) is connected the described seal membrane of giving vent to anger (24) upside, and diaphragm return spring (25) the other end is fixed in the cavity (80) on top;

One sealing gasket (26) of giving vent to anger is connected the described seal membrane of giving vent to anger (24) downside;

Conducting that can cooperate the sealing gasket of giving vent to anger (26) control decompression outlet passageway (16) and main valve air supply channel (17) and the sealing seat (27) of giving vent to anger of closing are arranged in the cavity (80) of the described seal membrane of giving vent to anger (24) downside, between described decompression outlet passageway (16) and the main valve air supply channel (17);

The one diaphragm vacuum passage (28) of giving vent to anger, the one end is connected with the cavity (80) of seal membrane (24) upside of giving vent to anger, the other end and mixed gas outlet (14) connection.

5, a kind of gas engine according to claim 2, it is characterized in that described startup enrichment-system (9) includes the startup enriching passage (29) of being located at interior conducting mixed gas outlet of controller (8) (14) and relief chamber (15), start the enriching flow control valve (30) that enriching passage (29) is provided with its interior low-pressure fuel gas flow of can regulate; Also comprise the guide channel of being located on the controller (8) (31), guide channel (31) upper end is provided with an end cap (32), being provided with in the guide channel (31) can be along the enriching valve rod (33) of its slip, be socketed with pressure spring (34) on the enriching valve rod (33), pressure spring (34) the other end leans on end cap (32); End cap (32) is provided with the through hole that can supply enriching valve rod (33) to slide up and down; Enriching valve rod (33) is provided with when it slides can open described startup enriching passage (29), can seal the upgrading valve sealing gasket (35) that starts enriching passage (29) when resetting.

6, a kind of gas engine according to claim 2, it is characterized in that described idle speed controller (10) includes the idling air supply channel of being located between described controller (8) main valve air supply channel (17) and the mixed gas outlet (14) (36), also be provided with the idling flow control valve (37) of its interior low-pressure fuel gas flow of can regulate on the idling air supply channel (36).

7, a kind of gas engine according to claim 2, it is characterized in that described air throttle control device (11) includes is located at controller (8) and goes up pilot hole (38), be provided with in the pilot hole (38) can slide along it, may command enters the valve needle (39) of gas flow in the mixed gas outlet (14) by main valve air supply channel (17), valve needle (39) is provided with may command main valve air supply channel (17) and mixed gas outlet (14) conducting and the valve base sealing pad (40) of closing; Valve needle (39) the other end is provided with needle Returnning spring (41).

8, a kind of gas engine according to claim 4, it is characterized in that described described controller (8) but on also be provided with the plasmas channel (42) of the described seal membrane of giving vent to anger (24) downside cavity (80) in the outer atmosphere of conducting controller (8) and the controller (8).

9, a kind of gas engine according to claim 1, it is characterized in that described body (1) bottom is connected with a fitting seat (43), fitting seat (43) is provided with a combustion gas storage device (44), and combustion gas storage device (44) connects tracheae (45) by one and connects with the high-pressure gas inlet (13) of described controller (8).