CN210564848U - Multi-point sequential injection gas engine intake manifold - Google Patents
Multi-point sequential injection gas engine intake manifold Download PDFInfo
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- CN210564848U CN210564848U CN201921674050.2U CN201921674050U CN210564848U CN 210564848 U CN210564848 U CN 210564848U CN 201921674050 U CN201921674050 U CN 201921674050U CN 210564848 U CN210564848 U CN 210564848U
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- air
- air inlet
- intake manifold
- pressure stabilizing
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
Abstract
The utility model discloses a multiple spot is spray gas engine air intake manifold in proper order, including steady voltage cavity and a plurality of main gas ducts that communicate with steady voltage cavity, each main gas duct is linear array along the extending direction of steady voltage cavity and distributes, the air inlet has been seted up to the one end of steady voltage cavity, the terminal branch of main gas duct is divided into two and is formed two and controls side by side branch air ducts the branching position department of main gas duct is provided with the gas nozzle mount pad on leaning on the outer wall of the side of admitting air, be provided with the gas nozzle mounting hole with main gas duct intercommunication on the gas nozzle mount pad, the direction of admitting air of this gas nozzle mounting hole and the direction of admitting air cisoid of main gas duct. The air charging efficiency and the air charging stability are improved, the air charging amount of each cylinder is uniform, the working uniformity of the engine is improved, the oil consumption and the emission are reduced, and the cylinder stringing can be effectively prevented.
Description
Technical Field
The utility model belongs to engine fuel supply system field, concretely relates to multiple spot order sprays gas engine air intake manifold.
Background
Compared with the prior art that the engine has better responsiveness by adopting the air inlet multi-point sequential injection engine technology, the multi-point sequential injection technology is the gas required by each working cycle of each cylinder of the engine directly and accurately controlled by an ECU, the dynamic property, the economical efficiency and the emission performance of the engine can be greatly improved, and the air inlet multi-point sequential injection technology is implemented on the dual-air inlet single-air-passage manifold, is the leading one in the industry of the gas engine at present.
The light gas engine is reformed by using a diesel engine as a prototype, an air inlet manifold of the diesel engine has no pressure stabilizing cavity and an air passage is short, and the problems of air inlet airflow disorder, easy cylinder series of mixed gas and the like can be caused by directly adopting an air inlet passage multipoint sequential injection engine technology on the basis, so that the mixed gas distribution of each cylinder is uneven, the working uniformity is poor, the combustion difference of each cylinder is large, the engine runs unstably and the emission performance is low. When the diesel engine is changed into a gas engine and the multi-point sequential injection technology of an air inlet channel is implemented on a double-air-inlet single-air-channel manifold, an effective pressure stabilizing cavity needs to be added, and an air channel needs to be prolonged, so that various problems caused by air inlet airflow disorder and mixed gas cylinder series are solved.
Disclosure of Invention
For solving the technical problem, the utility model provides a gas engine air intake manifold is sprayed in multiple spot order can solve that WHTC circulation test response is slow, the gas mixture cluster jar, the gas mixture distribution is inhomogeneous, the uniformity of operation is poor, the big problem of each jar combustion difference to reach the effect that engine dynamic nature, economic nature and emission performance promoted by a wide margin.
Therefore, the utility model discloses the technical scheme who adopts does: the multi-point sequential injection gas engine intake manifold comprises a pressure stabilizing chamber and a plurality of main air channels communicated with the pressure stabilizing chamber, wherein each main air channel is distributed in a linear array along the extension direction of the pressure stabilizing chamber, an air inlet is formed in one end of the pressure stabilizing chamber, the tail end of each main air channel is divided into two branch air channels which are arranged side by side left and right, a gas nozzle mounting seat is arranged on the outer wall of the branch position of each main air channel close to the air inlet side, a gas nozzle mounting hole communicated with the main air channels is formed in each gas nozzle mounting seat, and the air inlet direction of each gas nozzle mounting hole is forward to the air inlet direction of the main air channels.
Preferably, the main air ducts form an arc-shaped structure which smoothly transits towards the front from the middle to the air outlet, the gas nozzle mounting seats are arranged in the middle of the front outer wall of the arc-shaped section, and the upper end faces of the gas nozzle mounting seats of the main air ducts are all located on the same plane. Structure more than adopting, the up end of the gas nozzle mount pad of each main air flue all is located the coplanar, and the installation of the rail assembly of being convenient for spout is arranged, and air flue smooth transition in main air flue, branch air flue and the cylinder cap, gas nozzle mount pad set up in the middle of the preceding outer wall of segmental arc, make the mixed effect of gas and air more even, and the mist is more even at the distribution of two branch air flues, effectively alleviates the engine tempering to improve emission control.
Preferably, the length from the air inlet of the main air passage to the bifurcation is 100-120mm, and the length of the branch air passage is 52-60 mm. By adopting the structure, the length of each air passage is ensured, and the mixed gas is further prevented from being mixed and flowing into the cylinder.
Preferably, the cross-sectional area of the main air passage from the air inlet to the bifurcation is the same and is greater than the sum of the cross-sectional areas of the two branch air passages. By adopting the structure, the air inlet pressure and the air inlet amount of the air distributing passage are ensured.
Preferably, a throttle valve mounting flange is mounted to an air inlet of the pressure stabilization chamber. By adopting the structure, the throttle mounting flange is used for mounting the throttle.
Preferably, an injection rail fixing and mounting seat is arranged on the front outer wall of the pressure stabilizing chamber. By adopting the structure, the injection rail fixing and mounting seat is used for fixing the injection rail assembly.
Preferably, a sensor mounting seat is arranged on the rear outer wall of the pressure stabilizing chamber, and a through hole communicated with the pressure stabilizing chamber and a threaded hole for mounting the sensor are arranged on the sensor mounting seat. With the structure, the sensor mounting seat is used for mounting the sensor, and the sensor is used for detecting the air inlet pressure and the temperature.
Preferably, a vacuum pipe joint mounting seat is arranged on the rear outer wall of the pressure stabilizing chamber, and a threaded through hole communicated with the pressure stabilizing chamber is formed in the vacuum pipe joint mounting seat. By adopting the structure, the vacuum pipe joint mounting seat is used for mounting and connecting the vacuum pipe joint of the gas pressure reducer.
The utility model has the advantages that: the pressure stabilizing cavity is additionally arranged, so that the inflation efficiency and the air inlet stability are improved, the air inlet turbulence is avoided, the air inlet amount of each cylinder is uniform, the working stability of the engine is improved, and the oil consumption and the emission are reduced; the position of gas injection is close to the engine valve, so that the backfire of the engine can be reduced, the main air passage and the air dividing passage are additionally arranged, and the air inlet direction of the gas nozzle mounting hole is in the same direction as the air inlet direction of the main air passage, so that cylinder stringing can be effectively prevented; each cylinder is independently provided with a nozzle, and the fuel gas injection quantity can be accurately controlled through an electric control electronic injection system, so that the mixed gas of each cylinder is uniformly distributed, the responsiveness of a WHTC (tungsten carbide temperature) cycle test is improved, the combustion difference of each cylinder is reduced, and the working stability of an engine is improved.
Drawings
Fig. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic structural diagram of another view angle of the present invention.
Detailed Description
The invention will be further described by way of examples with reference to the accompanying drawings:
as shown in fig. 1 and 2, an intake manifold of a multi-point sequential injection gas engine mainly comprises a pressure-stabilizing chamber 1 and a plurality of main gas ducts 2 communicated with the pressure-stabilizing chamber 1, wherein each main gas duct 2 is distributed in a linear array along the extending direction of the pressure-stabilizing chamber 1, one end of the pressure-stabilizing chamber 1 is provided with an air inlet, the tail end of each main gas duct 2 is divided into two parts to form two branch gas ducts 201 which are arranged side by side left and right, a gas nozzle mounting seat 3 is arranged on the outer wall of the branch position of each main gas duct 2 close to the air inlet side, a gas nozzle mounting hole communicated with the main gas duct 2 is arranged on the gas nozzle mounting seat 3, the air inlet direction of the gas nozzle mounting hole is in the same direction as the air inlet direction of the main gas ducts 2, namely, the included angle between the gas inlet direction in the gas nozzle mounting hole and the air inlet direction in the main gas, the fuel gas catapult only can be catapulted in the air inlet direction, and the fuel gas and the air are fully mixed in the process and flow to the air cylinder along with the air, so that the cylinder stringing can be effectively prevented. The whole intake manifold is integrally formed, and the manufacture is convenient.
As shown in fig. 1 and 2, the air inlet of main gas duct 2 is connected at the downside of surge chamber 1, main gas duct 2 forms the arc structure towards the place ahead smooth transition from the middle part to the gas outlet, gas nozzle mount pad 3 sets up in the middle of the preceding outer wall of segmental arc, and the up end of the gas nozzle mount pad 3 of each main gas duct 2 all is located the coplanar, gas nozzle mount pad 3 is located in the middle of the preceding outer wall of segmental arc, make air and gas mix more evenly, make two minute air flue 201 air intakes even simultaneously. The length from the air inlet of the main air passage 2 to the bifurcation is 100-120mm, and the length of the air dividing passage 201 is 52-60 mm.
As shown in fig. 1 and 2, the cross-sectional area of the main duct 2 from the intake port to the bifurcation is the same, and is slightly larger than the sum of the cross-sectional areas of the two branch ducts 201.
As shown in fig. 1 and 2, a throttle mounting flange 4 is mounted to an intake port of the surge chamber 1.
As shown in fig. 1, an injection rail fixing mount 5 is provided on the front outer wall of the surge chamber 1.
As shown in fig. 2, a sensor mounting seat 6 is arranged on the rear outer wall of the pressure stabilizing chamber 1, a threaded hole 601 and a through hole with a smooth inner wall and communicated with the pressure stabilizing chamber 1 are arranged on the sensor mounting seat 6, the sensor is mounted on the sensor mounting seat 6 through a bolt in threaded fit with the threaded hole 601, the sensor can be effectively prevented from falling, and the sensor collects temperature and pressure data in the air inlet manifold through the through hole communicated with the pressure stabilizing chamber 1. The vacuum pipe joint mounting seat 7 is arranged on the rear outer wall of the pressure stabilizing cavity 1, the threaded through hole communicated with the pressure stabilizing cavity 1 is formed in the vacuum pipe joint mounting seat 7, the air pressure in the manifold is fed back to the pressure reducer through the threaded through hole by the vacuum pipe joint, and the pressure difference between the gas injection pressure conveyed to the nozzle by the pressure reducer and the pressure in the air inlet manifold is ensured to be an absolute value, so that the stability of the gas injection pressure is ensured.
Claims (8)
1. A kind of multipoint order sprays the gas engine intake manifold, characterized by: the gas nozzle comprises a pressure stabilizing chamber (1) and a plurality of main gas ducts (2) communicated with the pressure stabilizing chamber (1), wherein each main gas duct (2) is distributed in a linear array along the extending direction of the pressure stabilizing chamber (1), an air inlet is formed in one end of the pressure stabilizing chamber (1), the tail end of each main gas duct (2) is divided into two parts to form two left and right parallel gas dividing ducts (201), a gas nozzle mounting seat (3) is arranged on the outer wall of the branch position of each main gas duct (2) close to the air inlet side, a gas nozzle mounting hole communicated with the main gas duct (2) is formed in each gas nozzle mounting seat (3), and the air inlet direction of the gas nozzle mounting hole and the air inlet direction of the main gas duct (2) are forward.
2. The multipoint sequential injection gas engine intake manifold of claim 1, wherein: the main gas duct (2) forms an arc-shaped structure which smoothly transits towards the front from the middle part to the gas outlet, the gas nozzle mounting seat (3) is arranged in the middle of the front outer wall of the arc-shaped section, and the upper end surfaces of the gas nozzle mounting seats (3) of the main gas ducts (2) are all positioned on the same plane.
3. The multipoint sequential injection gas engine intake manifold of claim 1 or 2, wherein: the length from the air inlet of the main air passage (2) to the bifurcation is 100-120mm, and the length of the air dividing passage (201) is 52-60 mm.
4. The multipoint sequential injection gas engine intake manifold of claim 1, wherein: the cross-sectional area of the main air passage (2) from the air inlet to the bifurcation is the same, and is larger than the sum of the cross-sectional areas of the two branch air passages (201).
5. The multipoint sequential injection gas engine intake manifold of claim 1, wherein: and a throttle mounting flange (4) is mounted at an air inlet of the pressure stabilizing chamber (1).
6. The multipoint sequential injection gas engine intake manifold of claim 1, wherein: and a spray rail fixing mounting seat (5) is arranged on the front outer wall of the pressure stabilizing chamber (1).
7. The multipoint sequential injection gas engine intake manifold of claim 1, wherein: the sensor mounting seat is characterized in that a sensor mounting seat (6) is arranged on the rear outer wall of the pressure stabilizing chamber (1), and a through hole communicated with the pressure stabilizing chamber (1) and a threaded hole (601) for mounting a sensor are formed in the sensor mounting seat (6).
8. The multipoint sequential injection gas engine intake manifold of claim 1, wherein: the rear outer wall of the pressure stabilizing chamber (1) is provided with a vacuum pipe joint mounting seat (7), and the vacuum pipe joint mounting seat (7) is provided with a threaded through hole communicated with the pressure stabilizing chamber (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921674050.2U CN210564848U (en) | 2019-10-09 | 2019-10-09 | Multi-point sequential injection gas engine intake manifold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921674050.2U CN210564848U (en) | 2019-10-09 | 2019-10-09 | Multi-point sequential injection gas engine intake manifold |
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| Publication Number | Publication Date |
|---|---|
| CN210564848U true CN210564848U (en) | 2020-05-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921674050.2U Active CN210564848U (en) | 2019-10-09 | 2019-10-09 | Multi-point sequential injection gas engine intake manifold |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115075996A (en) * | 2022-06-10 | 2022-09-20 | 中国第一汽车股份有限公司 | Engine system and vehicle with same |
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2019
- 2019-10-09 CN CN201921674050.2U patent/CN210564848U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115075996A (en) * | 2022-06-10 | 2022-09-20 | 中国第一汽车股份有限公司 | Engine system and vehicle with same |
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