Double-water pump engine double cooling system

Abstract

The invention relates to a double-water pump engine double cooling system. The double-water pump engine double cooling system comprises a high-temperature circulating cooling system and a low-temperature circulating cooling system; the high-temperature circulating cooling system comprises an expansion tank, a high temperature heat dissipater, an engine cooling water jacket, a first water pump, an electronic thermostat, an engine oil cooler, an electric supercharger and hot air; the low-temperature circulating cooling system comprises an expansion tank, a low temperature heat dissipater, a turbo-supercharger, a second water pump, an intercooler and a BSG. According to the system, the two circulating cooling systems are arranged, the high temperature heat dissipater and the low temperature heat dissipater are arranged so that the requirements for cooling temperature of different parts to be cooled can be effectively met, and the sizes of the cooling systems are not increased through the technical scheme. The BSG, the turbo-supercharger and the intercooler are connected in parallel in the low-temperature circulating cooling system, and therefore the stability of the pressure difference of the components is guaranteed.

Description

technical field [0001] The invention belongs to the field of automobile cooling systems, and specifically refers to a dual cooling system for a dual water pump engine. Background technique [0002] Governments of various countries have promulgated more and more stringent standards for engine fuel consumption. For example, it is stipulated that automobile OEMs will continue to reduce fuel consumption to 5.0L / 100km in 2020; One technology is the supercharged miniaturization of the engine + hybrid technology. [0003] In response to local government regulations, a more innovative engine matching system must be found to accomplish this goal. Because on the premise of not losing power, it is basically an impossible task to reduce fuel consumption by 30% on the current basis. Therefore, it is proposed to use a hybrid power system + electronic supercharging on the engine, and achieve the requirement of reducing fuel consumption through weak mixing and miniaturization of engine su...

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to propose an improved technical solution to the existing engine cooling system. Through this technical solution, the flow direction of the coolant circulation between different components can be better adapted to solve the problems of intercooler, BSG, electronic supercharger, turbine, etc. The cooling problem of the supercharger and the oil cooler can solve the high heat dissipation demand of the BSG at low engine speed, the delayed cooling function after the turbocharger stops, and the more reasonable layout of the cooling system

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