CN104564434A - EGR (exhaust gas recirculation) engine assembly - Google Patents
EGR (exhaust gas recirculation) engine assembly Download PDFInfo
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- CN104564434A CN104564434A CN201310489522.8A CN201310489522A CN104564434A CN 104564434 A CN104564434 A CN 104564434A CN 201310489522 A CN201310489522 A CN 201310489522A CN 104564434 A CN104564434 A CN 104564434A
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Abstract
The invention provides an EGR (exhaust gas recirculation) engine assembly. The EGR engine assembly comprises a crankcase, a cylinder cover, an oil pan and an EGR cooler assembly, wherein the cylinder cover and the oil pan are arranged at the upper and lower ends of the crankcase, the EGR cooler assembly is located on the exhaust side of the engine, the EGR cooler assembly is correspondingly fitted with an engine exhaust pipe, an EGR control valve is arranged on the EGR cooler assembly, and the EGR control valve can accurately control the flow of waste gas entering the EGR cooler assembly so as to accurately control the EGR rate of the engine. An EGR water inlet pipe and an EGR water return pipe are respectively connected to the two ends of the EGR cooler assembly to form a cooling circulating system for cooling the waste gas in the exhaust pipe. The engine exhaust pipe is connected with an EGR gas inlet connecting pipe, the EGR gas inlet connecting pipe is connected with an inter-cooling rear gas inlet pipe communicated with a combustion chamber, and cooled waste gas enters the combustion chamber, so that oxygen concentration and highest combustion temperature in an air cylinder are lowered, and production of harmful gases NOX is reduced.
Description
Technical field
The present invention relates to a kind of EGR engine assembly, belong to technical field of automobile parts.
Background technique
In order to air conservation, meet oxynitrides (NO in the automobile Exhaust Gas specified in Abgasgesetz
x) discharge amount, must adopt an effective measure and reduce combustion peak temperature, shorten high-temperature duration, also will adopt suitable air fuel ratio, to reduce NO simultaneously
xdischarge.At present, generally adopt EGR Technology (EGR) to achieve the above object in the car, this technology can make the oxygen concentration in cylinder and maximum combustion temperature reduce, to control harmful gas NO
xgeneration, reach reduce discharge object.
But, in the egr adopted in current automobile, just waste gas is reintroduced back to firing chamber carries out secondary combustion, accurately can not control the exhaust gas flow carrying out firing chamber, thus EGR rate cannot be controlled accurately, and the cooling structure do not matched in this structure, the oxygen concentration in its reduction cylinder and the DeGrain of maximum combustion temperature, so it controls harmful gas NO
xgeneration and just undesirable to the effect reducing discharge, the deficiency that Here it is existing for prior art.
Summary of the invention
The technical problem to be solved in the present invention, be exactly for the deficiency existing for prior art, and provide a kind of EGR engine assembly, this assembly accurately can control the exhaust gas flow entering cooler for recycled exhaust gas assembly, and can effectively control harmful gas NO
xgeneration and discharge.
This programme is achieved by the following technical measures: this EGR engine assembly comprises crankcase, be positioned at the cylinder cap at the upper and lower two ends of crankcase and oil sump and be positioned at the cooler for recycled exhaust gas assembly of the exhaust side of engine, crankcase is equipped with machine oil module, starter motor, air compressor, high pressure oil pump, oil feed pump and fuel oil module, cooler for recycled exhaust gas assembly and engine exhaust pipe corresponding matching, cooler for recycled exhaust gas assembly is provided with EGR control valve, the two ends of cooler for recycled exhaust gas assembly are connected to EGR intake pipe and EGR return pipe, waste pipe is connected with EGR air inlet tube, EGR air inlet tube is cold rear suction tude in being connected with and communicating with firing chamber.
The exhaust side of above-mentioned motor is also provided with pressurized machine, and pressurized machine achieves the supercharging of motor, effectively improves the performance of motor, reduces harmful gas NO
xdischarge amount.
Said engine oil module and starter motor are positioned at the exhaust side of motor, and air compressor, high pressure oil pump, oil feed pump and fuel oil module are positioned at the air inlet side of motor, and this setting type can effectively utilize in-engine space.
Said engine oil module comprises oil filter, deaerator, machine oil cooler and pressure-limit valve, and fuel oil module comprises secondary fuel oil filter and hand oil pump.This integrated modular structure, its compact structure, farthest decreases the use of seal element, and amount of parts reduces about 25% than conventional diesel, thus effectively reduces disclosure risk, and convenient for maintaining.
Be provided with cylinder head cover above above-mentioned cylinder cap, this cylinder head cover is nylon matter cylinder head cover, is beneficial on cylinder head cover, stamp producer's mark.
Above-mentioned oil sump is Clad Steel Plate structure, to reduce the noise of engine operation.
The end of above-mentioned motor is provided with water pump, generator and fan, makes motor keep better performance by three is auxiliary.
Above-mentioned crankcase is vermicular cast iron material crankcase, while raising intensity, reduces the weight of cylinder.
The beneficial effect of this programme can be learnt according to describing of such scheme, in this EGR engine assembly, its cooler for recycled exhaust gas assembly is provided with EGR control valve, EGR control valve adopts pneumatic control valve, be integrated with solenoid valve and position transducer above, by the open degree feedback of EGR control valve to electronic control unit ECU, make EGR control valve accurately can control to enter the exhaust gas flow of cooler for recycled exhaust gas assembly, to control the EGR rate of motor accurately.The two ends of cooler for recycled exhaust gas assembly are connected to EGR intake pipe and EGR return pipe, cooling water is introduced cooler for recycled exhaust gas assembly by EGR intake pipe, cooling water flows back to thermostat housing from EGR return pipe, defines the cooling recirculation system of egr system, cools the waste gas in outlet pipe.Waste pipe is connected with EGR air inlet tube, EGR air inlet tube is cold rear suction tude in being connected with and communicating with firing chamber, EGR air inlet tube is by cold rear suction tude in cooled exhaust introducing, by in cold rear suction tude enter firing chamber, by the waste gas in outlet pipe after the cooling of cooler for recycled exhaust gas assembly with in cold after air in suction tude mix after enter cylinder, thus the oxygen concentration in cylinder and maximum combustion temperature are reduced, to control harmful gas NO
xgeneration, reach reduce discharge object.This engine assembly compact structure, unfailing performance is high, can effectively reduce the NO of motor
xdischarge, reaches Europe V effluent standard level.As can be seen here, compared with prior art, have outstanding substantive distinguishing features and significant progress, its beneficial effect implemented also is apparent in the present invention.
Accompanying drawing explanation
Fig. 1 is the perspective view one of the specific embodiment of the invention.
Fig. 2 is the perspective view two of the specific embodiment of the invention.
In figure, 1-EGR intake pipe, 2-cylinder head cover, 3-air compressor air intake pipe, 4-wire harness cover, 5-flywheel casing, 6-air compressor, 7-EGR cooler assembly, 8-EGR air inlet tube, cold rear suction tude in 9-, 10-EGR return pipe, 11-machine oil module, 12-crankcase, 13-fuel oil module, 14-oil feed pump, 15-high pressure oil pump, 16-generator, 17-oil sump, 18-fan, 19-engine water outlet, 20-starter motor, 21-pressurized machine, 22-water pump.
Embodiment
For the technical characterstic of this programme can be clearly demonstrated, below by embodiment, and in conjunction with its accompanying drawing, this programme is set forth.
A kind of EGR engine assembly, it comprises the crankcase 12 of vermicular graphite iron material, the cylinder cap being positioned at crankcase about 12 two ends and oil sump 17 and is positioned at cooler for recycled exhaust gas assembly 7 and the pressurized machine 21 of the exhaust side of engine.Crankcase 12 is equipped with machine oil module 11, starter motor 20, air compressor 6, high pressure oil pump 15, oil feed pump 14 and fuel oil module 13, wherein, machine oil module 11 and starter motor 20 are positioned at the exhaust side of motor, and air compressor 6, high pressure oil pump 15, oil feed pump 14 and fuel oil module 13 are positioned at the air inlet side of motor.Machine oil module 11 and fuel oil module 13 adopt modular construction respectively: machine oil module 11 comprises oil filter, deaerator, machine oil cooler and pressure-limit valve, and fuel oil module 13 comprises secondary fuel oil filter and hand oil pump.
Cooler for recycled exhaust gas assembly 7 and engine exhaust pipe corresponding matching, cooler for recycled exhaust gas assembly 7 is provided with EGR control valve, the two ends of cooler for recycled exhaust gas assembly 7 are connected to EGR intake pipe 1 and EGR return pipe 10, waste pipe be connected with EGR air inlet tube 8, EGR air inlet tube 8 be connected with communicate with firing chamber in cold rear suction tude 9.EGR control valve adopts pneumatic control valve, is integrated with electronic control and position feedback, accurately can controls by EGR control valve the exhaust gas flow entering cooler for recycled exhaust gas assembly 7, to control the EGR rate of motor accurately above EGR control valve.Cooling water is introduced cooler for recycled exhaust gas assembly 7 by EGR intake pipe 1, and cooling water flows back to thermostat housing from EGR return pipe 10, defines the cooling recirculation system of egr system, cools the waste gas in outlet pipe.EGR air inlet tube 8 is by cold rear suction tude 9 in cooled exhaust introducing, by in cold rear suction tude 9 enter firing chamber, by the waste gas in outlet pipe after cooler for recycled exhaust gas assembly 7 cools with in cold after air in suction tude 9 mix after enter cylinder, thus the oxygen concentration in cylinder and maximum combustion temperature are reduced, to control harmful gas NO
xgeneration, reach reduce discharge object.
Be provided with cylinder head cover 2 above cylinder cap, this cylinder head cover 2 is nylon matter cylinder head cover, can easily in the mark of the end face Shang Da producer of cylinder head cover 2; Oil sump 17 is Clad Steel Plate structure, utilizes this Clad Steel Plate structure to reduce noise during engine operation.In addition, water pump 22, generator 16 and fan 18 are installed in the end of motor, make motor keep better performance by three is auxiliary.
Can existing techniques in realizing be passed through without the technical characteristics described in the present invention, not repeat them here.The foregoing is only preferred embodiment of the present invention, the present invention is not limited in above-mentioned embodiment, and the change that those of ordinary skill in the art make in essential scope of the present invention, remodeling, interpolation or replacement also should belong to protection scope of the present invention.
Claims (10)
1. an EGR engine assembly, it comprises crankcase and is positioned at cylinder cap and the oil sump at the upper and lower two ends of crankcase, crankcase is equipped with machine oil module, starter motor, air compressor, high pressure oil pump, oil feed pump and fuel oil module, it is characterized in that: further comprising the cooler for recycled exhaust gas assembly being positioned at the exhaust side of engine, cooler for recycled exhaust gas assembly and engine exhaust pipe corresponding matching, cooler for recycled exhaust gas assembly is provided with EGR control valve, the two ends of cooler for recycled exhaust gas assembly are connected to EGR intake pipe and EGR return pipe, waste pipe is connected with EGR air inlet tube, EGR air inlet tube is cold rear suction tude in being connected with and communicating with firing chamber.
2. EGR engine assembly according to claim 1, is characterized in that: the exhaust side of described motor is also provided with pressurized machine.
3. EGR engine assembly according to claim 1 and 2, is characterized in that: described machine oil module and starter motor are positioned at the exhaust side of motor.
4. EGR engine assembly according to claim 3, is characterized in that: described air compressor, high pressure oil pump, oil feed pump and fuel oil module are positioned at the air inlet side of motor.
5. EGR engine assembly according to claim 1 and 2, is characterized in that: described machine oil module comprises oil filter, deaerator, machine oil cooler and pressure-limit valve.
6. EGR engine assembly according to claim 1 and 2, is characterized in that: described fuel oil module comprises secondary fuel oil filter and hand oil pump.
7. EGR engine assembly according to claim 1 and 2, is characterized in that: be provided with cylinder head cover above described cylinder cap, and this cylinder head cover is nylon matter cylinder head cover.
8. EGR engine assembly according to claim 1 and 2, is characterized in that: described oil sump is Clad Steel Plate structure.
9. EGR engine assembly according to claim 1 and 2, is characterized in that: the end of described motor is provided with water pump, generator and fan.
10. EGR engine assembly according to claim 1 and 2, is characterized in that: described 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 true CN104564434A (en) | 2015-04-29 |
| CN104564434B CN104564434B (en) | 2018-05-01 |
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ID=53081320
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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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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105443274A (en) * | 2015-12-07 | 2016-03-30 | 潍柴动力股份有限公司 | Multi-level cooling EGR cooling system |
| CN109209628A (en) * | 2018-09-26 | 2019-01-15 | 河北华北柴油机有限责任公司 | A kind of diesel engine that height reduces |
Citations (5)
| 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 |
| CN1614212A (en) * | 2003-11-07 | 2005-05-11 | 株式会社日立制作所 | Electronic EGR gas control system |
| 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 |
-
2013
- 2013-10-18 CN CN201310489522.8A patent/CN104564434B/en active Active
Patent Citations (5)
| 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 |
| CN1614212A (en) * | 2003-11-07 | 2005-05-11 | 株式会社日立制作所 | Electronic EGR gas control system |
| 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 |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105443274A (en) * | 2015-12-07 | 2016-03-30 | 潍柴动力股份有限公司 | Multi-level cooling EGR cooling system |
| 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 |
| CN109209628A (en) * | 2018-09-26 | 2019-01-15 | 河北华北柴油机有限责任公司 | A kind of diesel engine that height reduces |
| 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 |
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| Publication number | Publication date |
|---|---|
| CN104564434B (en) | 2018-05-01 |
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