Engine cooling system with EGR system and control method thereof

Abstract

The invention relates to an engine cooling system with an EGR system and a control method thereof. An electronic water pump is connected to the EGR system through a branch of a third pipeline and connected to a first pipeline through another branch of the third pipeline, and the first pipeline is connected to a pressurization system and an air inlet integrated intercooler; a fourth pipeline is connected to a low-temperature radiator through a fifth pipeline; the pressurization system and the air inlet integrated intercooler are connected to a branch of the fourth pipeline through a second pipeline, and the EGR system is connected to another branch of the fourth pipeline; and the electronic water pump is connected to the third pipeline and used for providing power, and cooling liquid flows from the electronic water pump to the EGR system, the pressurization system and the air inlet integrated intercooler, and then is gathered at and passes through the fifth pipeline to the low-temperature radiator. The problems that the temperature of EGR waste gas of the EGR system is too low when an engine is in a low-load area and the cooling energy consumption of the EGR system is high are solved.

Description

technical field [0001] The invention relates to the field of engines, in particular to an engine cooling system with an EGR system, a supercharging system and an air intake integrated intercooler and a control method thereof. Background technique [0002] With the tightening of fuel consumption regulations, fuel consumption has risen from a non-mandatory customer satisfaction index to a mandatory index of regulations. Fuel consumption is not only related to customer satisfaction, but also directly affects the sales of complete vehicles from the perspective of regulations. With the improvement of people's living standards, customers have higher and higher requirements on the acceleration performance of cars, which has become an important indicator for customers to choose cars. [0003] In view of the above situation, reducing fuel consumption and improving vehicle acceleration performance have become an increasingly urgent topic for various automobile companies. Among many n...

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Problems solved by technology

[0006] The purpose of the present invention is to provide a cooling system for an engine with an EGR system and a control method thereof, so as to solve the problem of EGR exhaust gas overcooling and the high energy consumption of EGR system cooling when the EGR system is in a low-load area of ​​the engine

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