CN104564434B - A kind of EGR engine assembly - Google Patents
A kind of EGR engine assembly Download PDFInfo
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- CN104564434B CN104564434B CN201310489522.8A CN201310489522A CN104564434B CN 104564434 B CN104564434 B CN 104564434B CN 201310489522 A CN201310489522 A CN 201310489522A CN 104564434 B CN104564434 B CN 104564434B
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- egr
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- exhaust gas
- oil
- cooler
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Abstract
The present invention provides a kind of EGR engine assembly, it includes crankcase, the cylinder cap positioned at crankcase upper and lower ends and oil sump and the cooler for recycled exhaust gas assembly positioned at the exhaust side of engine, cooler for recycled exhaust gas assembly and exhaust pipe of engine corresponding matching, EGR control valve is installed on cooler for recycled exhaust gas assembly, EGR control valve can accurately control the exhaust gas flow into cooler for recycled exhaust gas assembly, accurately to control the EGR rate of engine.The both ends of cooler for recycled exhaust gas assembly are connected to EGR water inlet pipes and EGR return pipes, the two forms cooling recirculation system, the exhaust gas in exhaust pipe are carried out cold.Waste pipe is connected with EGR air inlet tubes, EGR air inlet tubes are connected with communicated with combustion chamber in it is cold after air inlet pipe, exhaust gas after cooling enters combustion chamber, reduces oxygen concentration and maximum combustion temperature in cylinder, reduce pernicious gas NOXGeneration.
Description
Technical field
The present invention relates to a kind of EGR engine assembly, belong to technical field of automobile parts.
Background technology
Atmosphere pollution in order to prevent, meets oxynitrides in automobile discharge gas specified in Abgasgesetz（NOX）'s
Discharge capacity, it is necessary to which adopting an effective measure reduces combustion peak temperature, shortens high-temperature duration, while also to use appropriate sky
Ratio is fired, to reduce NOXDischarge.At present, EGR Technology is generally used in the car（EGR）To reach above-mentioned purpose,
The technology can make oxygen concentration and maximum combustion temperature reduction in cylinder, to control pernicious gas NOXGeneration, reach reduction
The purpose of discharge.
But in the eGR structure used at present in automobile, exhaust gas is simply reintroduced back to combustion chamber and carries out second-time burning,
The exhaust gas flow into combustion chamber can not accurately be controlled, so that EGR rate can not be controlled accurately, and in this structure not with
Matched cooling structure, its reduce cylinder in oxygen concentration and maximum combustion temperature effect unobvious, so its control has
Evil gas NOXGeneration and to reduce discharge effect with regard to undesirable, here it is the shortcoming present in the prior art.
The content of the invention
The technical problem to be solved in the present invention, aiming at the deficiency present in the prior art, and provides a kind of EGR and starts
Machine assembly, which can accurately control the exhaust gas flow into cooler for recycled exhaust gas assembly, and can effectively control pernicious gas
The generation and discharge of NOX.
This programme is achieved by the following technical measures：The EGR engine assembly includes crankcase, positioned at crankcase
The cylinder cap and oil sump of upper and lower ends and the cooler for recycled exhaust gas assembly positioned at the exhaust side of engine, organic oil mould is assembled on crankcase
Block, starter, air compressor machine, high-pressure oil pump, oil feed pump and fuel oil module, cooler for recycled exhaust gas assembly is corresponding with the exhaust pipe of engine to match somebody with somebody
Close, the both ends of cooler for recycled exhaust gas assembly are connected to EGR water inlet pipes and EGR return pipes, and waste pipe is connected with EGR
Air inlet tube, EGR air inlet tubes are connected with communicated with combustion chamber in it is cold after air inlet pipe, EGR is installed on cooler for recycled exhaust gas assembly
Control valve, EGR control valve use pneumatic control valve, are integrated with solenoid valve and position sensor above, by the aperture of EGR control valve
Electronic control unit ECU is fed back to, EGR control valve is accurately controlled the exhaust gas flow into cooler for recycled exhaust gas assembly, with standard
The EGR rate of true control engine.
The exhaust side of above-mentioned engine is also equipped with booster, and booster realizes the supercharging of engine, effective to improve
The performance of engine, reduces pernicious gas NOXDischarge capacity.
Said engine oil module and starter are located at the exhaust side of engine, air compressor machine, high-pressure oil pump, oil feed pump and fuel oil mould
Block is located at the air inlet side of engine, and this arrangement form can effectively utilize in-engine space.
Said engine oil module includes oil filter, gs-oil separator, oil cooler and pressure limiting valve, and fuel oil module includes
Secondary fuel oil filter and hand oil pump.This integrated modular structure, its is compact-sized, farthest reduces sealing element
Using, amount of parts reduces about 25% than conventional diesel, so that disclosure risk is effectively reduced, and convenient maintenance.
Cylinder head cover is installed above above-mentioned cylinder cap, which is nylon matter cylinder head cover, in favor of being stamped on cylinder head cover
Producer identifies.
Above-mentioned oil sump is clad steel plate structure, to reduce the noise of engine work.
The end of above-mentioned engine is provided with water pump, generator and fan, engine is kept more preferable by three's auxiliary
Performance.
Above-mentioned crankcase is vermicular cast iron material crankcase, while intensity is improved, reduces the weight of cylinder.
The beneficial effect of this programme can learn that in the EGR engine assembly, its EGR is cold according to the narration to such scheme
EGR control valve is but installed, EGR control valve uses pneumatic control valve, is integrated with solenoid valve and position sensing above on device assembly
Device, by the open degree feedback electron control unit ECU of EGR control valve, allows EGR control valve accurately to control and is cooled down into EGR
The exhaust gas flow of device assembly, accurately to control the EGR rate of engine.The both ends of cooler for recycled exhaust gas assembly be connected to EGR into
Cooling water is introduced cooler for recycled exhaust gas assembly by water pipe and EGR return pipes, EGR water inlet pipes, and cooling water flows back to section temperature from EGR return pipes
Device housing, forms the cooling recirculation system of egr system, and the exhaust gas in exhaust pipe is cooled down.Waste pipe connects
Be connected to EGR air inlet tubes, EGR air inlet tubes are connected with communicated with combustion chamber in it is cold after air inlet pipe, EGR air inlet tubes will cool down
Air inlet pipe after exhaust afterwards is cold in being introduced into, cold rear air inlet pipe enters combustion chamber in, i.e., the exhaust gas in exhaust pipe is passed through EGR
Cold air afterwards in air inlet pipe enters cylinder after mixing with after the cooling of cooler assembly, so that oxygen concentration in cylinder and most
Combustion temperatures reduce, to control pernicious gas NOXGeneration, achieve the purpose that reduce discharge.The engine assembly structure is tight
Gather, unfailing performance is high, can effectively reduce the NO of engineXDischarge, it is horizontal to reach V effluent standard of Europe.It can be seen from the above that this
Invention compared with prior art, has prominent substantive distinguishing features and significant progress, its beneficial effect implemented be also it is aobvious and
It is clear to.
Brief description of the drawings
Fig. 1 is the dimensional structure diagram one of the specific embodiment of the invention.
Fig. 2 is the dimensional structure diagram two of the specific embodiment of the invention.
In figure, 1-EGR water inlet pipes, 2- cylinder head covers, 3- air compressor air intake pipes, 4- harness covers, 5- bell housings, 6- air compressor machines,
7-EGR cooler assemblies, 8-EGR air inlet tubes, it is cold in 9- after air inlet pipe, 10-EGR return pipes, 11- machine oil modules, 12- bent axles
Case, 13- fuel oil modules, 14- oil feed pumps, 15- high-pressure oil pumps, 16- generators, 17- oil sumps, 18- fans, 19- engines go out
Water pipe, 20- starters, 21- boosters, 22- water pumps.
Embodiment
In order to clarify the technical characteristics of the invention, below by embodiment, and its attached drawing is combined, to we
Case is illustrated.
A kind of EGR engine assembly, it includes the crankcase 12 of vermicular graphite iron material, positioned at 12 upper and lower ends of crankcase
Cylinder cap and oil sump 17 and the cooler for recycled exhaust gas assembly 7 and booster 21 positioned at the exhaust side of engine.Assembled on crankcase 12 organic
Oily module 11, starter 20, air compressor machine 6, high-pressure oil pump 15, oil feed pump 14 and fuel oil module 13, wherein, machine oil module 11 and rise
Motivation 20 is located at the exhaust side of engine, and air compressor machine 6, high-pressure oil pump 15, oil feed pump 14 and fuel oil module 13 are located at engine
Air inlet side.Modular construction is respectively adopted in machine oil module 11 and fuel oil module 13：Machine oil module 11 includes oil filter, oil gas
Separator, oil cooler and pressure limiting valve, fuel oil module 13 include secondary fuel oil filter and hand oil pump.
Cooler for recycled exhaust gas assembly 7 and exhaust pipe of engine corresponding matching, are provided with EGR control valve on cooler for recycled exhaust gas assembly 7,
The both ends of cooler for recycled exhaust gas assembly 7 are connected to EGR water inlet pipes 1 and EGR return pipes 10, and waste pipe is connected with EGR
Air inlet tube 8, EGR air inlet tubes 8 are connected with communicated with combustion chamber in it is cold after air inlet pipe 9.EGR control valve uses pneumatic control
Valve, electronic control and position feedback are integrated with above EGR control valve, can accurately be controlled into EGR and cooled down by EGR control valve
The exhaust gas flow of device assembly 7, accurately to control the EGR rate of engine.EGR water inlet pipes 1 are total by cooling water introducing cooler for recycled exhaust gas
Into 7, cooling water flows back to thermostat housing from EGR return pipes 10, the cooling recirculation system of egr system is formd, in exhaust pipe
Exhaust gas cooled down.Air inlet pipe 9 after EGR air inlet tubes 8 are cold during exhaust after cooling is introduced into, the cold rear air inlet pipe 9 in
Into combustion chamber, i.e., it is cold with after cooler for recycled exhaust gas assembly 7 cools down by the exhaust gas in exhaust pipe after air in air inlet pipe 9
Enter cylinder after mixing, so that the oxygen concentration and maximum combustion temperature in cylinder reduce, to control pernicious gas NOXProduction
It is raw, achieve the purpose that to reduce discharge.
Cylinder head cover 2 is installed above cylinder cap, which is nylon matter cylinder head cover, in that context it may be convenient on the top of cylinder head cover 2
The mark of Mian Shangda producers；Oil sump 17 is clad steel plate structure, and engine work is reduced using this clad steel plate structure
When noise.In addition, being provided with water pump 22, generator 16 and fan 18 in the end of engine, make to start by three's auxiliary
Machine keeps better performance.
The technical characteristic without description can be achieved by the prior art in the present invention, and details are not described herein.It is described above
Only presently preferred embodiments of the present invention, the present invention are not limited in above-mentioned embodiment, and those of ordinary skill in the art exist
The variations, modifications, additions or substitutions made in the essential scope of the present invention, should also belong to protection scope of the present invention.
Claims (10)
1. a kind of EGR engine assembly, it includes crankcase and the cylinder cap and oil sump positioned at crankcase upper and lower ends, crankcase
Upper assembling organic oil module, starter, air compressor machine, high-pressure oil pump, oil feed pump and fuel oil module, it is characterised in that：Further include position
In the cooler for recycled exhaust gas assembly (7) of the exhaust side of engine, cooler for recycled exhaust gas assembly（7）It is cold with exhaust pipe of engine corresponding matching, EGR
But the both ends of device assembly are connected to EGR water inlet pipes (1) and EGR return pipes (10), waste pipe be connected with EGR into
Gas takes over (8), EGR air inlet tubes are connected with communicated with combustion chamber in it is cold after air inlet pipe (9), on the cooler for recycled exhaust gas assembly
EGR control valve is installed, EGR control valve uses pneumatic control valve, is integrated with solenoid valve and position sensor above, EGR is controlled
The open degree feedback electron control unit ECU of valve processed, allows EGR control valve accurately to control into the useless of cooler for recycled exhaust gas assembly
Throughput, accurately to control the EGR rate of engine.
2. EGR engine assembly according to claim 1, it is characterized in that：The exhaust side of the engine is also equipped with increasing
Depressor.
3. EGR engine assembly according to claim 1 or 2, it is characterized in that：The machine oil module and starter are positioned at hair
The exhaust side of motivation.
4. EGR engine assembly according to claim 3, it is characterized in that：The air compressor machine, high-pressure oil pump, oil feed pump and
Fuel oil module is located at the air inlet side of engine.
5. EGR engine assembly according to claim 1 or 2, it is characterized in that：The machine oil module includes oil filtration
Device, gs-oil separator, oil cooler and pressure limiting valve.
6. EGR engine assembly according to claim 1 or 2, it is characterized in that：The fuel oil module includes secondary fuel oil filter
And hand oil pump.
7. EGR engine assembly according to claim 1 or 2, it is characterized in that：Cylinder head cover is installed above the cylinder cap,
The cylinder head cover is nylon matter cylinder head cover.
8. EGR engine assembly according to claim 1 or 2, it is characterized in that：The oil sump is clad steel plate structure.
9. EGR engine assembly according to claim 1 or 2, it is characterized in that：The end of the engine is provided with water
Pump, generator and fan.
10. EGR engine assembly according to claim 1 or 2, it is characterized in that：The crankcase is vermicular cast iron material
Crankcase.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310489522.8A CN104564434B (en) | 2013-10-18 | 2013-10-18 | A kind of EGR engine assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310489522.8A CN104564434B (en) | 2013-10-18 | 2013-10-18 | A kind of EGR engine assembly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104564434A CN104564434A (en) | 2015-04-29 |
| CN104564434B true CN104564434B (en) | 2018-05-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310489522.8A Active CN104564434B (en) | 2013-10-18 | 2013-10-18 | A kind of EGR engine assembly |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105443274B (en) * | 2015-12-07 | 2018-03-13 | 潍柴动力股份有限公司 | Multistage cooling cooling system for recycled exhaust gas |
| CN109209628B (en) * | 2018-09-26 | 2021-02-26 | 河北华北柴油机有限责任公司 | Diesel engine with reduced height |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003065116A (en) * | 2001-08-24 | 2003-03-05 | Nissan Motor Co Ltd | Exhaust emission control device for internal combustion engine |
| CN201991646U (en) * | 2011-03-31 | 2011-09-28 | 浙江吉利汽车研究院有限公司 | EGR (exhaust gas recirculation) control device in turbocharged diesel engine |
| CN202578980U (en) * | 2012-05-22 | 2012-12-05 | 东风汽车有限公司 | Combined air inlet pipe for EGR diesel engine |
| CN203488279U (en) * | 2013-10-18 | 2014-03-19 | 中国重汽集团济南动力有限公司 | EGR (Exhaust Gas Recirculation) engine assembly |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4192763B2 (en) * | 2003-11-07 | 2008-12-10 | 株式会社日立製作所 | Electronic EGR gas control device |
-
2013
- 2013-10-18 CN CN201310489522.8A patent/CN104564434B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003065116A (en) * | 2001-08-24 | 2003-03-05 | Nissan Motor Co Ltd | Exhaust emission control device for internal combustion engine |
| CN201991646U (en) * | 2011-03-31 | 2011-09-28 | 浙江吉利汽车研究院有限公司 | EGR (exhaust gas recirculation) control device in turbocharged diesel engine |
| CN202578980U (en) * | 2012-05-22 | 2012-12-05 | 东风汽车有限公司 | Combined air inlet pipe for EGR diesel engine |
| CN203488279U (en) * | 2013-10-18 | 2014-03-19 | 中国重汽集团济南动力有限公司 | EGR (Exhaust Gas Recirculation) engine assembly |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104564434A (en) | 2015-04-29 |
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