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Engine cooling system for vehicle and vehicle

An engine cooling and engine technology, applied in the direction of engine cooling, engine components, combustion engines, etc., can solve the problems of damaged catalyst, increased fuel consumption, neglect, etc., and achieve the effects of improved combustion, reduced fuel consumption, and improved performance

Active Publication Date: 2020-02-28
GREAT WALL MOTOR CO LTD
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Problems solved by technology

EGR technology can effectively reduce NOx emissions, but people ignore the key factor that EGR technology can be used as a heat recovery source
[0003] In addition, under extremely high loads, the existing engine needs to bypass part of the exhaust gas. At the same time, considering that the high exhaust gas temperature will damage the catalyst, the mixed gas enrichment strategy is adopted, that is, more fuel injection, which will lead to increased fuel consumption.

Method used

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  • Engine cooling system for vehicle and vehicle
  • Engine cooling system for vehicle and vehicle

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Embodiment Construction

[0034] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0035] As fuel consumption and emission regulations become more and more stringent, it is urgent to improve the thermal management capability of the engine, especially in the cold state of the engine - relevant literature shows that the engine's emissions within 30 seconds of warming up account for the entire NEDC (new European driving cycle) more than 90% of the cycle emissions, and a problem brought about at the same time is high fuel consumption. Therefore, the combustion of the engine under cold start conditions and cold conditions needs to be improved urgently.

[0036] In addition, with the rapid development of automobile technology, people not only pursue the high performance and low fuel consumption of automobiles, but also pay more attention to the driving comfort brought by the automobile itself. ...

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Abstract

The invention provides a vehicle and an engine cooling system for the same. The engine cooling system comprises a cylinder water jacket, an engine oil cooler connected with the cylinder water jacket,a first water pump connected with the engine oil cooler and selectively connected with the cylinder water jacket and an EGR cooler, and a water inlet of the EGR cooler is selectively connected with the first water pump while a water outlet of the same is selectively connected with the engine oil cooler and / or the first water pump. The engine cooling system can utilize the EGR cooler to recycle heat of waste gas and supply the same to the engine oil cooler, so that temperature of engine oil in the engine oil cooler is quickly increased under low load; bypass waste gas is cooled under high load,so that negative impact on performance of a catalyst caused by the fact that high-temperature waste gas is directly discharged into the three-way catalyst is avoided.

Description

technical field [0001] The invention relates to the field of vehicle technology, in particular to an engine cooling system for a vehicle and the vehicle. Background technique [0002] The current cooling EGR technology is mature, which leads exhaust gas from the exhaust end into the combustion chamber to reduce the combustion temperature. EGR technology can effectively reduce NOx emissions, but people ignore the key factor that EGR technology can be used as a heat recovery source. [0003] In addition, the engine in the prior art needs to bypass part of the exhaust gas under extremely high load. At the same time, considering that the high exhaust gas temperature will damage the catalyst, the mixed gas enrichment strategy is adopted, that is, more fuel injection, which will lead to increased fuel consumption. Contents of the invention [0004] In view of this, the present invention aims to propose an engine cooling system, which can use the EGR cooler to recover the heat o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01P3/02F01P11/08F01N5/02F01M5/00F02M26/28
CPCF01M5/001F01M5/005F01N5/02F01P3/02F01P11/08F01P2003/021F01P2050/22F01P2060/04Y02T10/12
Inventor 王江涛杨晓勇李宇飞高峰胡广进申荣伟张士伟
Owner GREAT WALL MOTOR CO LTD
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