CN203547912U - Electronically controlled multi-point injection natural gas engine - Google Patents
Electronically controlled multi-point injection natural gas engine Download PDFInfo
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- CN203547912U CN203547912U CN201320714446.1U CN201320714446U CN203547912U CN 203547912 U CN203547912 U CN 203547912U CN 201320714446 U CN201320714446 U CN 201320714446U CN 203547912 U CN203547912 U CN 203547912U
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- Prior art keywords
- natural gas
- air inlet
- firing chamber
- gas engine
- exhaust
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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
- Y02T10/12—Improving ICE efficiencies
-
- 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
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- Cylinder Crankcases Of Internal Combustion Engines (AREA)
- Combustion Methods Of Internal-Combustion Engines (AREA)
Abstract
The utility model discloses an electronically controlled multi-point injection natural gas engine which mainly comprises cylinder bodies, air cylinder covers, air inlet manifolds and exhaust manifolds. The included angle between the two inclined combustion chamber top surfaces of a fluffy combustion chamber at the upper ends of air cylinders and the bottom surfaces of the air cylinders is 25 degrees, and a spark plug is arranged at the center of the fluffy combustion chamber. One inclined top surface is provided with two air inlet valves, the other inclined top surface is provided with two exhaust valves, and the included angle between the air inlet valves and the exhaust valves is 50 degrees. The four air inlet manifolds bent downwards are equal in length, the length of the air inlet manifolds is 573.5 mm, and the diameter of the air inlet manifolds is 49 mm. The air inlet manifolds are connected with a large pressure stabilizing cavity, and the volume of the pressure stabilizing cavity is 2 L. Each air inlet manifold is provided with an electronically controlled natural gas nozzle, oil spraying holes of the electronically controlled natural gas nozzles are communicated with inner holes of the air inlet manifolds, air inlets of the four electronically controlled natural gas nozzles are communicated with a compressed natural gas pipeline through a shared gas track. The electronically controlled multi-point injection natural gas engine provides power for 6-8 m buses and medium buses in cities and is efficient and low in pollution.
Description
Technical field
The utility model relates to internal-combustion engine, is specially a kind of natural gas engine that burns rock gas.
Background technique
Urban bus and middle bus are widely used petrol engine or diesel engine is used as power, because world petroleum resource reduces year by year, oil price is high, and the Abgasgesetz increasingly stringent of various countries, market in urgent need uses petroleum replacing base fuel (diesel oil, gasoline), price is low, blowdown is few city bus and the natural gas engine of the supporting power of middle bus.The problems such as city 6～8m bus of natural gas fuel and the motor of middle bus are all to change burning rock gas upper the work after some improve of existing petrol engine (or diesel engine) at present, and the product structure of existence repacking falls behind, combustion efficiency is not high, the more former petrol engine of power (or diesel engine) is low.
Model utility content
The purpose of this utility model is to overcome above-mentioned city 6～8m existing petrol engine used for buses (or diesel engine) to change the problem that combustion efficiency is not high, power declines of burning rock gas existence, provides a kind of for city 6～8m bus and middle bus natural gas engine that be used as power, high-efficiency low-pollution.
The utility model is to adopt following technological scheme to realize: described electric controlled multi-point is sprayed natural gas engine and comprised cylinder body, cylinder head, intake manifold, piston, gas exhaust manifold, the cylinder diameter 98mm of four cylinders of described cylinder body, piston stroke 100mm, two firing chamber inclined top faces of the fluffy type firing chamber of each cylinder upper end become 25 ° of oblique angles with cylinder head bottom surface, bottom plane, firing chamber and piston-top surface form squish face, and the central authorities on top, fluffy type firing chamber are provided with a spark plug.
Described electric controlled multi-point is sprayed the cylinder diameter 98mm of four cylinders of natural gas engine, piston stroke 100mm, two firing chamber inclined top faces of the fluffy type firing chamber of each cylinder upper end become 25 ° of oblique angles with cylinder head bottom surface, make the compact structure of firing chamber, antiknock quality are good, bottom plane, firing chamber and piston-top surface form larger squish face, the strong stream that squeezes producing when piston stroking upward approaches end face forms strong turbulence in firing chamber, has further improved antiknock quality and has improved combustion efficiency, reduced fuel consumption rate.The central authorities on top, fluffy type firing chamber are provided with a spark plug, have shortened flame travel, have further improved antiknock quality, and complete machine compression ratio reaches 12, has improved the thermal efficiency, reduced fuel consumption rate and has improved power.An inclined top face is provided with two intake valves, and another inclined top face is provided with two exhaust valves, and the angle between intake valve and exhaust valve is 50 °.See accompanying drawing 3, the intake duct of intake valve in cylinder cap is communicated with decurved suction tude, and four reclinate intake manifold are isometric, length 573.5mm, diameter of phi 49mm.The pressure stabilizing cavity large with one is connected, pressure stabilizing cavity volume 2L, inlet stream enters cylinder through performance and two intake valves on the inclined top face of 25 ° of firing chambers, inlet stream turning degree is little, intake resistance is little, air inflow is large, improved power, intake resistance little airflow flow velocity forms greatly the strong stream that rolls in cylinder, makes mixed gas more even, has further improved combustion efficiency, has reduced fuel consumption rate.Another inclined top face is provided with two exhaust valves, and exhaust valve is communicated with gas exhaust manifold through air outlet flue; Each intake manifold is provided with an electric-controlled natural gas nozzle, see accompanying drawing 2, the nozzle opening of electric-controlled natural gas nozzle is communicated with intake manifold endoporus, the suction port of four electric-controlled natural gas nozzles is communicated with compressed natural gas pipe through a shared gas rail, being connected with ECU through controlling wire harness respectively of four electric-controlled natural gas nozzles, ECU controls electric-controlled natural gas nozzle accurate quantification ground combustion gas is sprayed into inlet stream, has guaranteed lower discharge; Four gas exhaust manifolds become 42 ° of obliques with exhaust manifold, see accompanying drawing 4, take full advantage of exhaust injection by effect, have reduced exhaust back pressure, have reduced exhaust power loss, have further improved useful horsepower, have reduced fuel consumption rate.
The beneficial effects of the utility model:
Chamber structure, spark plug setting and the intake duct structure of JF498QT natural gas engine described in the utility model effectively raise antiknock quality to the effect of inlet stream, make the compression ratio of JF498QT natural gas engine reach 12, improved combustion efficiency, fuel consumption rate and blowdown are declined, and intake duct intake resistance reduces, air inlet charge strengthens and exhaust manifold structure reduces exhaust power loss power is improved.JF498QT natural gas engine is worked as the consumption rate of petrol lower than 208g/Kwh, discharge reaches state's V standard, power is higher than 114Kw/4000rpm, Maximum Torque 273Nm/2200rpm(power per liter 38Kw/L, torque per liter 91Nm/L), after effectively having solved existing city 6～8m petrol engine used for buses (or diesel engine) repacking, burn the problem that power declines, specific fuel consumption is high that rock gas exists, JF498QT provides the supporting power of a new generation of high-efficiency low-pollution ground natural gas fuel for city 6～8m bus and passenger vehicle.
Accompanying drawing explanation:
Fig. 1 is the utility model JF498QT Cylinder of Natural Gas Engine hole vertical profile TV structure schematic diagram,
Fig. 2 is the utility model JF498QT Cylinder of Natural Gas Engine hole vertical profile TV structure schematic diagram,
Fig. 3 is the C-C sectional structure schematic diagram of Fig. 1 or Fig. 2,
Fig. 4 be the B of the utility model JF498QT natural gas engine to view,
Fig. 5 is the front-end face structural representation of the utility model JF498QT natural gas engine,
Fig. 6 be the A of the utility model JF498QT natural gas engine to view,
Fig. 7 is the plan structure schematic diagram of the utility model JF498QT natural gas engine.
In figure: 1, cylinder body; 2, cylinder cap; 3, intake manifold; 4, gas exhaust manifold; 5, firing chamber; 6, firing chamber inclined top face; 7, cylinder head bottom surface; 8, spark plug; 9, intake valve; 10, intake duct; 11, exhaust valve; 12, air outlet flue; 13, electric-controlled natural gas nozzle; 14, nozzle opening; 15, intake manifold endoporus; 16, suction port; 17, gas rail; 18, compressed natural gas pipe; 19, control wire harness; 20, ECU; 21, bottom plane, firing chamber; 22, piston-top surface; 23, another inclined top face of firing chamber.
Embodiment:
It is JF498QT natural gas engine that electric controlled multi-point is sprayed natural gas engine, it mainly comprises cylinder body 1, cylinder head 2, piston, intake manifold 3, gas exhaust manifold 4, see accompanying drawing 1, accompanying drawing 7, the cylinder diameter 98mm of four cylinders, piston stroke 100mm, each cylinder upper end is 25 ° of oblique angles of two firing chamber inclined top faces 6 and 7 one-tenth of cylinder head bottom surfaces of the firing chamber 5 of fluffy type, make the compact structure of firing chamber, antiknock quality are good, bottom plane, firing chamber 21 forms larger squish face with piston-top surface 22, a firing chamber inclined top face is provided with two intake valves, another firing chamber inclined top face is provided with two exhaust valves, angle between intake valve and exhaust valve is 50 °.
The strong stream that squeezes producing when piston stroking upward approaches end face forms strong turbulence in firing chamber, has further improved antiknock quality, and has improved combustion efficiency, reduced fuel consumption rate.The central authorities on top, fluffy type firing chamber are provided with a spark plug 8, have shortened flame travel, have further improved antiknock quality, and complete machine compression ratio reaches 12, thereby has improved the thermal efficiency, reduced fuel consumption rate and improved power.A firing chamber inclined top face 6 is provided with two intake valves 9, and the intake duct 10 of intake valve in cylinder cap is communicated with decurved intake manifold.
See accompanying drawing 3, accompanying drawing 7, the intake duct of intake valve in cylinder cap is communicated with decurved intake manifold 3, and four reclinate intake manifold are isometric, length 573.5mm, and diameter of phi 49mm the pressure stabilizing cavity large with are connected, pressure stabilizing cavity volume 2L.Inlet stream enters cylinder through performance and two intake valves on the inclined top face of 25 ° of firing chambers, inlet stream turning degree is little, intake resistance is little, air inflow is large, improved power, intake resistance little airflow flow velocity forms greatly the strong stream that rolls in cylinder, make mixed gas more even, further improved combustion efficiency, reduced fuel consumption rate.Another inclined top face 23 of firing chamber is provided with two exhaust valves 11, and exhaust valve is communicated with gas exhaust manifold 4 through air outlet flue 12; Each intake manifold is provided with an electric-controlled natural gas nozzle 13, see accompanying drawing 2, the nozzle opening 14 of electric-controlled natural gas nozzle is communicated with intake manifold endoporus 15, the suction port 16 of four electric-controlled natural gas nozzles is communicated with compressed natural gas pipe 18 through a shared gas rail 17, see accompanying drawing 2, accompanying drawing 5, accompanying drawing 6, accompanying drawing 7, being connected with ECU 20 through controlling wire harness 19 respectively of four electric-controlled natural gas nozzles, ECU controls electric-controlled natural gas nozzle accurate quantification ground combustion gas is sprayed into inlet stream, has guaranteed lower discharge; 20 one-tenth 42 ° of obliques of four gas exhaust manifolds 4 and exhaust manifolds, are shown in accompanying drawing 4, take full advantage of exhaust injection by effect, have reduced exhaust back pressure, have reduced exhaust power loss, have further improved useful horsepower, have reduced fuel consumption rate.
Claims (5)
1. electric controlled multi-point is sprayed natural gas engine, it mainly comprises cylinder body (1), cylinder head (2), intake manifold (3), piston, gas exhaust manifold (4), it is characterized in that: the cylinder diameter 98mm of four cylinders of described cylinder body, piston stroke 100mm, two firing chamber inclined top faces (6) of the fluffy type firing chamber (5) of each cylinder upper end become 25 ° of oblique angles with cylinder head bottom surface (7), bottom plane, firing chamber (21) forms squish face with piston-top surface (22), and the central authorities on top, fluffy type firing chamber are provided with a spark plug (8).
2. electric controlled multi-point according to claim 1 is sprayed natural gas engine, it is characterized in that: a firing chamber inclined top face (6) is provided with two intake valves (9), another inclined top face of firing chamber (23) is provided with two exhaust valves (11), and the angle between intake valve and exhaust valve is 50 °.
3. electric controlled multi-point according to claim 1 is sprayed natural gas engine, it is characterized in that: the intake duct (10) of intake valve (9) in cylinder cap is communicated with decurved intake manifold (3).
4. electric controlled multi-point according to claim 1 is sprayed natural gas engine, it is characterized in that: four reclinate intake manifold (3) are isometric, and length 573.5mm, diameter of phi 49mm, and the pressure stabilizing cavity large be connected, pressure stabilizing cavity volume 2L.
5. electric controlled multi-point according to claim 1 is sprayed natural gas engine, it is characterized in that: four gas exhaust manifolds (4) become 42 ° of obliques with exhaust manifold.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320714446.1U CN203547912U (en) | 2013-11-14 | 2013-11-14 | Electronically controlled multi-point injection natural gas engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320714446.1U CN203547912U (en) | 2013-11-14 | 2013-11-14 | Electronically controlled multi-point injection natural gas engine |
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| Publication Number | Publication Date |
|---|---|
| CN203547912U true CN203547912U (en) | 2014-04-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320714446.1U Expired - Fee Related CN203547912U (en) | 2013-11-14 | 2013-11-14 | Electronically controlled multi-point injection natural gas engine |
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| CN (1) | CN203547912U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108644006A (en) * | 2018-05-15 | 2018-10-12 | 浙江吉利控股集团有限公司 | A kind of Turbocharged Natural Gas Engine and control method |
| CN113482765A (en) * | 2021-08-11 | 2021-10-08 | 安徽江淮汽车集团股份有限公司 | Natural gas engine |
-
2013
- 2013-11-14 CN CN201320714446.1U patent/CN203547912U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108644006A (en) * | 2018-05-15 | 2018-10-12 | 浙江吉利控股集团有限公司 | A kind of Turbocharged Natural Gas Engine and control method |
| CN113482765A (en) * | 2021-08-11 | 2021-10-08 | 安徽江淮汽车集团股份有限公司 | Natural gas engine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Electronically controlled multi-point injection natural gas engine Effective date of registration: 20171123 Granted publication date: 20140416 Pledgee: Jiangxi Jiaxin Company limited by guarantee Pledgor: PINGXIANG JIANGFA ENGINE CO., LTD. Registration number: 2017360000028 |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140416 Termination date: 20181114 |