CN2129827Y - Gasfication device of automobile engine - Google Patents

Abstract

The utility model provides a gasification device, which is used for automobile engines taking liquefied petroleum gas or natural gas as fuel, comprising a casing 1, a pressure regulating cavity 2, a recuperator 3, a pressure regulating valve cavity 6, a first level decompression cabin 4 and a secondary decompression cabin 5. The gasification device is characterized in that in addition, it also comprises an additional air demand adjusting device which is able to make the gasification device close itself when the engine stops working, and the technical characteristics of preventing from the gas leakage and the adoption of the electromagnetic valve to control the on-and-off of the airflow. Compared with the prior art, the utility model has the advantages of high commonality, timely controlling, and safe reliability during operation.

Description

Gasfication device of automobile engine

The present invention relates to a kind of can liquefied petroleum gas (LPG) or natural gas be the vaporizer that the motor car engine of fuel is used.

What be in the practical stage at present is the motor car engine of fuel with liquefied petroleum gas (LPG) or natural gas, and its vaporizer device also has following shortcoming.At first be that versatility is poor, because dissimilar its required gas flow difference of motor car engine, and present vaporizer creates its throughput of back and can not adjust, and therefore, a kind of vaporizer of model generally can only adapt to one type motor car engine to be used.Next is that control is relatively poor in real time.Existing vaporizer, airflow and the control that ends are leaned on to such an extent that be pneumatic valve, and in general, the action of this class valve is bigger lag time, and it has influenced the real-time control of gas flow.The 3rd is that the safety reliability degree is not high enough.After motor car engine quits work, vaporizer should not allow gas leakage, though existing products also can be when engine operation stops with the main closedown of pipeline of air feed, but the gas that remains in the vaporizer still has leakage, although the amount of gas outflow is less in this case, this also is unsafe.

Order of the present invention provides a kind of highly versatile, and the quicker and safety reliability of motor reaction is higher, and what plurality of advantages was arranged is the Carbureter for car engine of fuel with liquefied petroleum gas (LPG) or natural gas.

Accompanying drawing is a structural representation of the present invention.

With reference to accompanying drawing.Provided by the invention with liquefied petroleum gas (LPG) or natural gas be the vaporizer that uses of the motor car engine of fuel compared with the prior art, identical is that it also comprises housing 1, include pressure regulation cavity 2 in the housing 1, the heat exchanger 3 of band hot water inlet/outlet A, B, one-level underpressure chamber 4, the second depressurized chamber 5 of band gas outlet C and ventilating hole D, pressure regulation valve pocket 6 and liquid combustion gas suction valve 7 and starting, idle valve 8, between one-level underpressure chamber 4 and pressure regulation cavity 2, second depressurized chamber 5 and the pressure regulation valve pocket 6, porose respectively E, F, G communicate.Different with prior art is:

A is provided with a pressure regulator valve in the pressure regulation cavity 2, said pressure regulator valve is to have the cover 9 of many apertures, the Returnning spring 10 that is contained in the cover 9 to constitute with the valve 11 that Returnning spring 10 1 ends link to each other by top,

B is provided with a pressure regulation valve block 12 in the pressure regulation valve pocket 6, said this pressure regulation valve block 12 is divided into normal pressure chamber P1 and transformation chamber P2 two partly with pressure regulation valve pocket 6, and said pressure regulation valve block 12 links to each other with valve 11 in the pressure regulator valve by a connecting rod 13,

C, in the second depressurized chamber 5, be provided with a valve block 14, be provided with a valve H with the hole F that communicates with one-level underpressure chamber 4, said valve block 14 is divided into normal pressure chamber P3 and gas storage chamber P4 two parts with second depressurized chamber 5, normal pressure chamber P3 communicates with ventilating hole D, gas storage chamber P4 communicates with gas outlet C, in the gas storage chamber P4 in the said second depressurized chamber 5 lever transmission mechanism L is arranged, the end of this lever transmission mechanism L its other end that links to each other with valve H links to each other with valve block 14, in addition, also be provided with a controlling device of forming by spring 15 and adjusting screw 16 on the lever transmission mechanism L.

D, said liquid combustion gas suction valve 7 and said starting, idle valve 8 are electromagnetic type.

Working principle of the present invention is: 1, when motor car engine works in vehicle starting or idling, liquid combustion gas suction valve 7 and starting, the idle valve 8 of electromagnetic type are opened rapidly, at this moment, the liquid combustion gas suction valve 7 of combustion gas by electromagnetic type enters in the pressure regulation cavity 2 and then again and enters in the one-level underpressure chamber 4 by the pressure regulator valve of being made up of cover 9, Returnning spring 10 and valve 11.At this moment, because the hole F that second depressurized chamber 5 communicates with one-level underpressure chamber 4 is being closed by valve H, therefore, have only a spot of gas to deliver in the one-level underpressure chamber 4 and supply with car engine start or idling use in the second depressurized chamber 5 by starting, the idle valve 8 of electromagnetic type.2, when motor car engine is operated in motoring condition, when the requirement of its combustion gas increases, the air pressure of gas storage chamber P4 in the second depressurized chamber 5 will be less than the air pressure of normal pressure chamber P3, at this moment, valve block 14 will be beaten De Gengkai to valve H by lever transmission mechanism L, and thereupon, the more combustion gas in the one-level underpressure chamber 4 will enter in the second depressurized chamber 5 by hole F; Because the gas in the one-level underpressure chamber 4 is incremental, this phenomenon will produce siphonage to the transformation chamber P2 in the pressure regulation valve pocket 6 by hole G makes its air pressure less than the air pressure in the P1 of normal pressure chamber, at this moment valve block 12 pushes up De Gengkai by connecting rod 13 with the valve in the pressure regulator valve 11 again, allows more liquid fuel be sent in the one-level minimizing chamber 4 by hole E and gasifies.If the combustion gas requirement of motor car engine reduces, otherwise then above situation.3, when motor car engine quits work, liquid combustion gas suction valve 7 and starting, the idle valve 8 of electromagnetic type are closed rapidly, simultaneously, because the indoor gas storage chamber P4 of second depressurized equates that with the air pressure of normal pressure chamber P3 valve block 14 resets, valve H seals hole F, at this moment, liquid fuel source stops air feed, and the residual gas in the vaporizer then is closed in the one-level underpressure chamber.4, when its combustion gas demand of dissimilar motor car engines not simultaneously, the open degree that people can come control valve H by the degree of tightness of the air demand controlling device adjustment (adjusting) lever driving mechanism L that is made up of spring 15 and adjusting screw 16, like this, can make the air demand of vaporizer adapt to dissimilar motor car engines.

Can see according to above-mentioned technical characteristics of the present invention and working principle, because this vaporizer has the air demand controlling device, after having motor car engine work to stop, the measure of its energy self-isolation air chamber, and adopted the valve of electromagnetic type to control air feed, thereby compared with the prior art, the present invention has highly versatile, reliability is high and the real-time good advantage of control performance.

When below narrating the invention process in conjunction with the accompanying drawings again several problems of further solving.

1, the valve blocks 12 in the pressure regulation valve pocket 6 are during by the valve 11 in the connecting rod 13 control pressure regulator valves, and suffered gaseous-pressure is bigger, can be sensitiveer for making its action, and be preferably in and a Returnning spring 17 be set on the valve block 12 to help its power.

2, gas is 4 processes by hole F injection second depressurized chamber 5 from the one-level underpressure chamber, by hole G, to produce siphonage to the transformation chamber P2 in the pressure regulation valve pocket 6, for the valve block 12 in the pressure regulation valve pocket 6 can be moved rapidly accurately, hole G is near more good more from hole F, because sampling accurately like this.

3, the lever transmission mechanism L in the said second depressurized of the present invention chamber 5 is a connecting rod pair in this accompanying drawing, also can adopt simple lever in fact, and but, the former is active in one's movements, and the latter is simple in structure.

Claims (2)

1, a kind of can liquefied petroleum gas (LPG) or natural gas be the vaporizer that the motor car engine of fuel is used, comprise housing 1, include pressure regulation cavity 2 in the housing 1, the heat exchanger 3 of band hot water inlet/outlet A, B, one-level underpressure chamber 4, the second depressurized chamber 5 of band gas outlet C and ventilating hole D, pressure regulation valve pocket 6 and liquid combustion gas suction valve 7 and starting, idle valve 8, between one-level underpressure chamber 4 and pressure regulation cavity 2, second depressurized chamber 5 and the pressure regulation valve pocket 6, porose respectively E, F, G communicate, and it is characterized in that:

A is provided with a pressure regulator valve in the pressure regulation cavity 2, said pressure regulator valve is to have the cover 9 of many apertures, the Returnning spring 10 that is contained in the cover 9 to constitute with the valve 11 that Returnning spring 10 1 ends link to each other by top,

B is provided with a pressure regulation valve block 12 in the pressure regulation valve pocket 6, said this pressure regulation valve block 12 is divided into normal pressure chamber P1 and transformation chamber P2 two partly with pressure regulation valve pocket 6, and said pressure regulation valve block 12 links to each other with valve 11 in the pressure regulator valve by a connecting rod 13,

C, in the second depressurized chamber 5, be provided with a valve block 14, be provided with a valve H with the hole F that communicates with one-level underpressure chamber 5, said valve block 14 is divided into normal pressure chamber P3 and gas storage chamber P4 two parts with second depressurized chamber 5, normal pressure chamber P3 communicates with ventilating hole D, gas storage chamber P4 communicates with gas outlet C, in the gas storage chamber P4 in the said second depressurized chamber 5 lever transmission mechanism L is arranged, the end of this lever transmission mechanism L its other end that links to each other with valve H links to each other with valve block 14, in addition, also be provided with a controlling device of forming by spring 15 and adjusting screw 16 on the lever transmission mechanism L.

D, said liquid combustion gas suction valve 7 and said starting, idle valve 8 are electromagnetic type.

2,, it is characterized in that being provided with on the pressure regulation valve block 12 Returnning spring 17 according to the said vaporizer of claim 1.