CN115450804A

CN115450804A - Gas engine

Info

Publication number: CN115450804A
Application number: CN202211227046.8A
Authority: CN
Inventors: 申浩; 尤顾扬; 刘志强; 刘琳琳; 李兴旺; 王颖
Original assignee: Anhui Hualing Automobile Co Ltd
Current assignee: Anhui Hualing Automobile Co Ltd
Priority date: 2022-10-09
Filing date: 2022-10-09
Publication date: 2022-12-09

Abstract

The invention discloses a gas engine, which comprises an air filter, a mixer, a supercharger and a combustion chamber, wherein an air outlet of the air filter is communicated with an air inlet of the mixer; the mixer is provided with a gas inlet and is used for mixing the gas entering from the air inlet and the gas inlet and then discharging the mixed gas from a mixing outlet of the mixer; the mixing outlet is communicated with the inlet of the supercharger; the supercharger outlet is directly or indirectly communicated to the combustion chamber to supply air to the combustion chamber. In this gas engine, the blender sets up between air cleaner and booster to make the booster pressurize to thin gas simultaneously, so that thin gas also can satisfy the combustion chamber user demand, so that have better application, especially to the marsh gas that municipal administration pipeline or various plant and refuse treatment field produced, can solve the unable fine problem of using as engine fuel of thin gas effectively.

Description

Gas engine

Technical Field

The invention relates to the technical field of engines, in particular to a gas engine.

Background

Most of the conventional power generation markets are diesel engines, so that the economical efficiency is poor, the emission pollution is serious, and the market demand cannot be met. The natural gas is used as clean energy, can effectively reduce exhaust pollutants, and improves the environment. The natural gas engine in the power generation market has complex gas pipeline arrangement and strict requirement on gas pressure, and particularly for thinner gas, the natural gas engine cannot be used through the engine.

In summary, how to effectively solve the problem that the lean fuel gas cannot be well used as the engine fuel is a problem that needs to be solved by those skilled in the art.

Disclosure of Invention

In view of the above, an object of the present invention is to provide a gas engine that can effectively solve the problem that lean fuel gas cannot be used as engine fuel well.

In order to achieve the purpose, the invention provides the following technical scheme:

a gas engine comprises an air filter, a mixer, a supercharger and a combustion chamber, wherein an air outlet of the air filter is communicated with an air inlet of the mixer; the mixer is provided with a gas inlet and is used for mixing the air inlet and the gas inlet and then discharging the mixed gas from a mixing outlet of the mixer; the mixing outlet is communicated with the supercharger inlet; the supercharger outlet is directly or indirectly connected to the combustion chamber to supply air to the combustion chamber.

In this gas engine, when using, when the gas import of lean gas connection to the blender, can mix gas and air through the blender, then unify through the booster compression to satisfy the gas chamber and require to the gas quantity. In this gas engine, the blender sets up between air cleaner and booster to make the booster can pressurize thin gas simultaneously, so that thin gas also can satisfy combustion chamber user demand, so that have better application nature, especially to the marsh gas that municipal administration pipeline or various plant and refuse disposal plant produced, can be better be suitable for. Moreover, this mixing reduces the technical requirements for mixing. As described above, the gas engine can effectively solve the problem that lean fuel gas cannot be used as engine fuel well.

Preferably, the heat radiator further comprises a heat radiator, and a gas channel capable of radiating heat is arranged in the heat radiator; the gas passage communicates between the supercharger outlet and the combustion chamber.

Preferably, the air conditioner further comprises a throttle valve and a throttle controller for controlling the opening degree of the throttle valve; the throttle valve communicates between the gas passage and the combustion chamber.

Preferably, the engine further comprises a cooling channel for absorbing heat from the engine and a liquid pump; a liquid channel capable of dissipating heat is also arranged in the radiator; the cooling passage, the liquid pump and the liquid passage are in circulating communication.

Preferably, the exhaust system further comprises a bypass valve for guiding the gas in the combustion chamber to the supercharger driving cavity and an exhaust pipe connected with an exhaust port of the supercharger driving cavity, wherein a silencer is arranged on the exhaust pipe, and the exhaust pipe is fixed on an exhaust manifold through an exhaust support.

Preferably, the exhaust pipe is provided with an oxygen sensor; and an air inlet temperature and pressure sensor is arranged on the air inlet side of the throttle valve, and an air outlet temperature and pressure sensor is arranged on the air outlet side of the throttle valve.

Preferably, the engine comprises an engine cylinder body and a flywheel housing positioned at the end face of the rear end of the engine cylinder body, and the air filter is installed at the rear end of the engine cylinder body and positioned on the upper side of the flywheel housing.

Preferably, the air filter further comprises an air filter support and an auxiliary support, the air filter support is in a bracket shape and used for supporting the air filter, and the air filter support spans across and is fixed on the flywheel casing; the auxiliary bracket is connected to the cylinder cover of the engine cylinder body.

Preferably, the mixer is mounted to the flywheel housing by a mixing bracket.

Preferably, the bottom of the engine block is provided with a plurality of support feet to suspend the engine block.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a schematic structural view of an air intake side of a gas engine according to an embodiment of the present invention;

FIG. 2 is a schematic rear end structure of a gas engine according to an embodiment of the present invention;

FIG. 3 is a schematic view of an exhaust side structure of a gas engine according to an embodiment of the present invention;

fig. 4 is a schematic top view of a gas engine according to an embodiment of the present invention.

The drawings are numbered as follows:

the engine oil cooling system comprises a radiator 1, a heat dissipation air outlet pipe 2, an ignition coil 3, an air inlet temperature and pressure sensor 4, an air saving controller 5, a throttle valve 6, an air outlet temperature and pressure sensor 7, an air filter 8, an air filter support 9, an auxiliary support 10, a rear right suspension support 11, a control unit 12, an air inlet pipe 13, an engine oil scale 14, a knock sensor 15, a front right suspension support 16, a mixing support 17, a rotating speed sensor 18, a first air inlet hose 19, a mixer 20, a second air inlet hose 21, an air inlet steel pipe 22, a third air inlet hose 23, a bypass valve 24, a pressurization controller 25, a supercharger 26, an oxygen sensor 27, an air outlet pipe 28, an exhaust support 29, a liquid pump 30, a heat dissipation water outlet pipe 31, an engine oil cooling module 32, a front left suspension support 33, a heat dissipation air inlet pipe 34, a starter 35, a rear left suspension support 36 and a heat dissipation water inlet pipe 37.

Detailed Description

The embodiment of the invention discloses a gas engine, which aims to effectively solve the problem that lean gas cannot be well used as engine fuel.

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.

Referring to fig. 1 to 4, fig. 1 is a schematic diagram of an air intake side structure of a gas engine according to an embodiment of the present invention; FIG. 2 is a schematic rear end structure of a gas engine according to an embodiment of the present invention; FIG. 3 is a schematic view of an exhaust side structure of a gas engine according to an embodiment of the present invention; fig. 4 is a schematic top view of a gas engine according to an embodiment of the present invention.

In one embodiment, the present embodiment provides a gas engine, which includes, in particular, an air cleaner 8, a mixer 20, a supercharger 26, and a combustion chamber, although other configurations may be included.

Wherein air cleaner 8, can be called empty again and strain, empty filter, inside sets up the filter, and the import is used for leading-in atmosphere, and the air promptly, then filters, mainly filters off particulate matter or other material that influence later stage combustion efficiency. And then discharging the filtered gas from the gas outlet.

The mixer 20 has an air inlet, a gas inlet and a mixing outlet, and the mixer 20 is used for mixing the air entering through the air inlet and the gas entering through the gas inlet and then discharging the mixed gas from the mixing outlet. The mixing principle can be to utilize the molecular diffusion capacity of molecules and/or the intrinsic movement of substances so as to mix two gases entering the same cavity in the flowing process. The specific mixer 20 configuration can be found in the prior art.

Wherein the air inlet is adapted to communicate with the air outlet of the air filter 8 for obtaining air, mainly oxygen, from the air filter 8. And the fuel gas inlet is used for introducing fuel gas, such as natural gas, petroleum gas, methane and other fuels. Wherein both the gas inlet and the air inlet are generally provided with means for regulating the flow of inlet gas in order to regulate the ratio between gas and air, i.e. to regulate the ratio between gas and oxygen in the mixing outlet. The mixing outlet, the air inlet and the gas inlet are all passage ports, and can be general passage ports, wherein the mixing, the air, the gas and the like are only used for distinguishing the passage ports.

With the mixing outlet communicating with the supercharger 26 inlet for supplying the mixed feed air to the supercharger 26. And the outlet of the supercharger 26 is directly or indirectly connected to the combustion chamber to supply the mixture gas to the combustion chamber. It should be noted that the indirect communication, such as the indirect communication via the throttle valve 6, the radiator 1, and the like described below, may be indirect communication via another passage member, and the direct communication, such as the direct communication via a passage, may be performed. Wherein the pressure of the mixed gas is enabled to reach a sufficient value by the action of the pressure booster 26, so as to ensure the contents of fuel gas, oxygen and the like entering the combustion chamber, and ensure the combustion efficiency.

In the gas engine, when lean gas is connected to the gas inlet of the mixer 20, the gas and air can be mixed by the mixer 20 and then compressed by the supercharger 26 to meet the gas amount requirement of the gas chamber. In this gas engine, blender 20 sets up between air cleaner 8 and booster 26 to make booster 26 can pressurize the thin gas simultaneously, so that the thin gas also can satisfy combustion chamber user demand, so that have better application, especially to the marsh gas that municipal pipeline or various plants and refuse disposal plant produced, can be better be suitable for. Moreover, this mixing reduces the technical requirements for mixing. As described above, the gas engine can effectively solve the problem that lean fuel gas cannot be used as engine fuel well.

In a specific embodiment, the heat sink generally further comprises a heat sink 1, wherein a gas channel capable of dissipating heat is arranged in the heat sink 1; and gas passage intercommunication wherein is between booster 26 export and combustion chamber to make booster 26 exhaust high temperature gas, after gas passage, by the gas passage heat dissipation, the cooling, under the unchangeable circumstances of pressure holding, can make gas content in the unit volume higher, with the further requirement of guaranteeing later stage combustion chamber combustion efficiency.

As shown in the drawing, two ends of the gas passage of the radiator 1 are respectively communicated with the heat-dissipating gas outlet pipe 2 and the heat-dissipating gas inlet pipe 34, wherein the heat-dissipating gas inlet pipe 34 is communicated between the pressurized gas outlet of the supercharger 26 and the gas passage, and wherein the heat-dissipating gas outlet pipe 2 is communicated between the combustion chamber and the gas passage, and the heat-dissipating gas outlet pipe 2 can be directly or indirectly communicated with the combustion chamber.

Wherein, the radiator 1 can be provided with a coil or other heat exchange tubes, and at least one section of the coil is a gas channel to radiate heat by contacting with air or other cooling substances. The structure and heat dissipation of the heat sink 1 can be referred to in the prior art, such as a condenser in an air conditioning system.

In a specific embodiment, the throttle valve 6 and the throttle controller 5 for controlling the opening degree of the throttle valve 6 may be further included, wherein the throttle controller 5 is in signal connection with the control unit 12, the control unit 12 forms a control command and sends the control command to the throttle controller 5, and then the throttle controller 5 controls the corresponding driving mechanism according to the throttle opening degree requirement included in the command, and drives the throttle valve 6 to open and close so as to adjust the opening and closing degree, and further controls the air intake amount entering the combustion chamber. The throttle valve 6 communicates between the gas passage and the combustion chamber to achieve indirect communication.

Generally, in order to better monitor the air inlet and outlet effects, an air inlet temperature and pressure sensor 4 may be further disposed on the air inlet side of the throttle valve 6, and an air outlet temperature and pressure sensor 7 may be further disposed on the air outlet side of the throttle valve 6.

An intake pipe 13 is generally provided between the throttle valve 6 and the combustion chamber. And an ignition coil 3 is generally arranged at the top of the engine cylinder body, and particularly, an intelligent ignition coil can be adopted. And an oil dipstick 14 for detecting the content of the internal lubricating oil is also arranged at the engine block.

In one embodiment, cooling passages for absorbing heat from the engine, such as provided at an oil cooling module 32, and a liquid pump 30 are also included. Wherein the cooling channel can also flow through other places needing heat dissipation.

A liquid channel capable of dissipating heat is arranged in the radiator 1; the cooling channel, the liquid pump 30 and the liquid channel are in circulating communication, that is, the cooling liquid flowing out from the cooling channel enters the liquid channel, after heat dissipation, flows back into the cooling channel, absorbs heat in the cooling channel, and then flows out from the cooling channel to enter the liquid channel again. And a liquid pump 30 is provided between the cooling channel outlet and the liquid channel inlet and/or a liquid pump 30 is provided between the liquid channel outlet and the cooling channel inlet for accelerating the circulation.

As shown in the drawings, a heat radiation water outlet pipe 31 and a heat radiation water inlet pipe 37 are further provided, the liquid pump 30 is connected with the engine crankshaft through a belt pulley, under the action of the liquid pump 30, the cooling liquid in the cooling channel inside the engine is pumped into the liquid channel of the radiator 1 through the heat radiation water inlet pipe 37, and the cooled cooling liquid flows out of the liquid channel and flows back to the cooling channel of the engine through the heat radiation water outlet pipe 31.

In some embodiments, the thermostat may be closed when the engine water temperature is below 85 ℃, at which time engine heat dissipation relies on a small circulation and an air-drawing fan inside the engine to draw heat out of the sound box. When the temperature of the engine water is higher than 85 ℃, the cooling liquid is pumped out of the engine body through the liquid pump 30, the cooling liquid is connected into a liquid channel of the radiator 1 through the heat radiation water inlet pipe 37, the radiator 1 is fixed at the front end of the engine through a support, and the cooling liquid after cooling flows back into the engine body through the heat radiation water outlet pipe 31.

In one embodiment, a bypass valve 24 is included for directing combustion chamber gases to the drive chamber of the supercharger 26 and an exhaust conduit 28 is included for connecting to the exhaust of the drive chamber of the supercharger 26. The high-pressure exhaust gas formed in the combustion chamber is used for driving a part of the exhaust gas to enter a driving cavity of the supercharger 26 under the action of the bypass valve 24, a main shaft of the supercharger 26 is pushed to rotate in the driving cavity of the supercharger 26, and a pressurizing impeller in a pressurizing cavity of the supercharger 26 is further pushed to rotate, so that the gas at the inlet of the supercharger 26 is pressurized and then is exhausted from an outlet. And the exhaust tube 28 is used for exhausting the gas exhausted from the exhaust port of the drive chamber.

In order to avoid excessive vibration transmitted to the supercharger 26 to damage the supercharger 26, it is preferable that the exhaust pipe 28 is fixed to the exhaust manifold by an exhaust bracket 29. To transmit a portion of the shock through the exhaust bracket 29 to the exhaust manifold.

In order to better control the degree of supercharging of the supercharger 26, a supercharging controller 25 is generally provided, the supercharging controller 25 is used for controlling the opening degree of the bypass valve 24, and the supercharging controller 25 can be in communication connection with the control unit 12 to be controlled by the control unit 12 in a unified manner.

The exhaust pipe 28 may be a straight pipe or an elbow pipe, such as an arc pipe.

For better monitoring of the combustion ratio, an oxygen sensor 27 may be further provided in the exhaust pipe 28.

In one embodiment, a flywheel housing is generally provided at the rear end face of the engine block for outputting power from the engine main shaft, such as for generating electricity, and the input shaft of the generator may be in power connection with the engine main shaft through a flywheel in the flywheel housing. A speed sensor 18 is also typically provided at the flywheel housing to sense engine spindle speed.

Further, the air filter 8 can be installed at the rear end of the engine cylinder and located on the upper side of the flywheel housing, so that the space can be better utilized, that is, the air filter 8 is arranged on the rear side of the engine cylinder, and the air filter 8 is arranged on the upper side of the flywheel housing on the rear side of the engine cylinder. Compared with the arrangement right above the engine cylinder body, the engine cylinder body can reduce the space in the vertical direction, and the upper side of the flywheel shell is provided with a vacant space so as to place an air filter 8.

In one embodiment, in order to better support the air cleaner 8, the air cleaner assembly further preferably comprises an air cleaner support 9 and an auxiliary support 10, wherein the air cleaner support 9 is of a bracket type for supporting the air cleaner 8, and the air cleaner support 9 spans and is fixed on the flywheel housing. And the auxiliary bracket 10 is connected to the cylinder cover of the engine block, and the other end of the auxiliary bracket 10 is connected to the supporting surface of the air filter bracket 9. So that when saving space, guaranteed the intensity of support, effectively reduce empty vibration of straining.

In one embodiment, the mixer 20 can be mounted to the flywheel housing by the mixing bracket 17, which is compact, short in connection and reduces engine cost. Wherein, the mixing support 17, the air filter support 9 and the auxiliary support 10 are all supports, and the structures can be the same or different, and the mixing support, the air filter support and the auxiliary support can be correspondingly arranged according to the requirements.

In one embodiment, the bottom of the engine block may be provided with a plurality of support feet to suspend the engine block. Specifically, a rear right suspension bracket 11, a front right suspension bracket 16, a front left suspension bracket 33, and a rear left suspension bracket 36 may be included, and the four suspension brackets may be distributed in a rectangular shape.

In a specific embodiment, a knock sensor 15 is also provided in general to monitor engine knock by the knock sensor 15 and to make a correction of the ignition advance angle.

In one embodiment, a first air intake hose 19 is typically provided between the air cleaner 8 and the mixer 20 for better connection. An intake steel pipe 22 is generally provided between the mixer 20 and the supercharger 26, a second intake hose 21 is provided between the intake steel pipe 22 and the mixer 20, and a third intake hose 23 is provided between the intake steel pipe 22 and the supercharger 26. So as to be connected through a hose to ensure the connection tightness. And the air inlet steel pipe 22 is arranged, so that the phenomenon that the hose is too long to cause too large vibration can be avoided.

In one embodiment, starter 35 is also preferably provided here for better engine starting.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A gas engine comprises an air filter, a mixer, a supercharger and a combustion chamber, and is characterized in that an air outlet of the air filter is communicated with an air inlet of the mixer; the mixer is provided with a gas inlet and is used for mixing the gas entering from the air inlet and the gas inlet and then discharging the mixed gas from a mixing outlet of the mixer; the mixing outlet is communicated with the supercharger inlet; the supercharger outlet is directly or indirectly connected to the combustion chamber to supply air to the combustion chamber.

2. The gas engine as set forth in claim 1, further including a radiator having a gas passage therein for dissipating heat; the gas passage communicates between the supercharger outlet and the combustion chamber.

3. The gas engine as set forth in claim 2, further comprising a throttle valve and a throttle controller that controls a degree of opening of the throttle valve; the throttle valve communicates between the gas passage and the combustion chamber.

4. A gas engine as set forth in claim 3 and including a liquid pump and a cooling passage for absorbing heat from the engine; a liquid channel capable of dissipating heat is also arranged in the radiator; the cooling passage, the liquid pump and the liquid passage are in circulating communication.

5. The gas engine according to claim 4, further comprising a bypass valve for guiding the gas in the combustion chamber to the supercharger drive chamber and an exhaust pipe connected to an exhaust port of the supercharger drive chamber, wherein the exhaust pipe is provided with a silencer, and the exhaust pipe is fixed to an exhaust manifold through an exhaust bracket.

6. A gas engine according to claim 5, characterized in that the exhaust pipe is provided with an oxygen sensor; and an air inlet temperature and pressure sensor is arranged on the air inlet side of the throttle valve, and an air outlet temperature and pressure sensor is arranged on the air outlet side of the throttle valve.

7. A gas engine as set forth in claims 1-6, including an engine block and a flywheel housing at a rear end face of the engine block, the air cleaner being mounted at the rear end of the engine block and on an upper side of the flywheel housing.

8. The gas engine as claimed in claim 7, further comprising an air filter support and an auxiliary support, wherein the air filter support is of a bracket type for supporting the air filter, and the air filter support spans and is fixed on the flywheel housing; the auxiliary bracket is connected to the cylinder cover of the engine cylinder body.

9. A gas engine as set forth in claim 8, wherein said mixer is mounted to said flywheel housing by a mixing bracket.

10. The gas engine of claim 7, wherein a bottom of the engine block is provided with a plurality of support feet to suspend the engine block.