Engine cooling system with dual expansion water tanks

Abstract

The invention relates to an engine cooling system with dual expansion water tanks. The engine cooling system with dual expansion water tanks comprises a high-temperature circulating cooling system, a low-temperature circulating cooling system and a delayed circulating cooling system. The high-temperature circulating cooling system comprises the first expansion water tank, a high-temperature radiator, an engine cooling water jacket, a first water pump, an electronic thermostat, an engine oil cooler, an electronic supercharger, a turbocharger and a heater. The low-temperature circulating cooling system comprises the second expansion water tank, a low-temperature radiator, a second water pump, an inter-cooler and a belt starter generator (BSG). Due to the facts that the three sets of circulating cooling systems are arranged, and the high-temperature circulating cooling system and the low-temperature circulating cooling system are provided with the high-temperature radiator and the low-temperature radiator respectively, the requirements of different parts to be cooled for the cooling temperature are effectively met, and the size of the cooling systems is not increased according to the technical scheme.

Description

technical field [0001] The invention belongs to the field of automobile cooling systems, and specifically refers to a cooling system with double expansion water tanks for an 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 miniaturizatio...

AI Technical Summary

Problems solved by technology

[0010] 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 and the delayed cooling function after the turbocharger is shut down

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