Improved structure of dual water pump engine double cooling systems

Abstract

The invention relates to an improved structure of dual water pump engine double cooling systems. The improved structure of the dual water pump engine double cooling systems comprises the high-temperature circulating cooling system and the low-temperature circulating cooling system. The high-temperature circulating cooling system comprises an expansion tank, a high-temperature cooler, an engine cooling water jacket, a first water pump, an electronic thermostat, an engine oil cooler and a heater. The low-temperature circulating cooling system comprises an expansion tank, a low-temperature cooler, a turbocharger, a second water pump, an intercooler, a BSG and an electronic booster. According to the improved structure of the dual water pump engine double cooling systems, the two sets of circulating cooling systems are arranged, and the high-temperature cooler and the low-temperature cooler are arranged in the two systems correspondingly, so that cooling temperature requirements of different cooling parts are effectively ensured. Further, according to the technical scheme, the size of the cooling system is not increased. At the same time, the series branch of the BSG, the turbocharger and the electronic booster and the intercooler branch are arranged in parallel in the low-temperature circulating cooling system, and stability of the differential pressure of the parts is ensured.

Description

technical field [0001] The invention belongs to the field of automobile cooling systems, in particular to an improved structure of a dual cooling system of a dual water pump engine. Background technique [0002] Governments around the world have promulgated more and more stringent standards for the fuel consumption of engines. For example, in 2020, OEMs are required to continuously reduce fuel consumption to 5.0L / 100km; fuel saving has become the development trend of automobiles in the world, and the most important fuel saving measures are One technology is the supercharged miniaturization of the engine + hybrid technology. [0003] In response to local government regulations, a more innovative engine matching system had to be found to accomplish this. Because without 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, throug...

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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 and the delayed cooling function after the turbocharger is shut down

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