Constant-temperature cooling system for engine

Abstract

The invention relates to the technical field of automobile manufacturing, in particular to a constant-temperature cooling system for an engine. The constant-temperature cooling system for the engine comprises an engine, a radiator, an intercooler and an ECU. A water circulating pipe is arranged in an inner cavity of the radiator. The portion, between a water outlet temperature sensor and a water outlet electromagnetic valve, of the water circulating pipe is connected with an auxiliary circulating pipe. An auxiliary water inlet electromagnetic valve is arranged at the end, close to the water circulating pipe, of the auxiliary circulating pipe. An auxiliary water outlet pipe is connected to the end, away from the water circulating pipe, of the auxiliary circulating pipe. An auxiliary water outlet electromagnetic valve is arranged at the end, close to the auxiliary water outlet pipe, of the auxiliary circulating pipe. According to the constant-temperature cooling system for the engine, high-temperature liquid in the engine can be cooled preliminarily through the water circulating pipe in the radiator and fans; if the cooling temperature cannot meet the requirement, the auxiliary circulating pipe and the fans are started to further cool the high-temperature liquid, so that the liquid circulating back into the engine is cooled to a temperature lower than the specified temperature, and damage to the engine is avoided; and the constant-temperature cooling system for the engine is extremely worthy of popularization.

Description

technical field [0001] The invention relates to the technical field of automobile manufacturing, in particular to an engine constant temperature cooling system. Background technique [0002] The car engine cooling system is an important part of the car. The traditional car engine cooling system is a fan driven by the engine belt to cool the "series" heat exchanger group, that is, the radiator and the intercooler. The heat dissipation capacity is only related to the engine speed. Real-time monitoring of the temperature cannot be achieved, and it is not adjusted according to the actual cooling needs. The mechanical belt drive is used to drive the fan structure, ignoring different heat exchange systems. With the change of the vehicle and engine working conditions, there are different requirements for heat dissipation characteristics. Radiator Arranged in series with the intercooler, the two cannot be taken into account, and the phenomenon of overheating in summer and overcoolin...

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Problems solved by technology

[0004] For the "engine constant temperature energy-saving cooling system" in the prior art, it obviously has the following defects: after the radiator and the intercooler are arranged separately, the radiator dissipates heat for the liquid, and the intercooler dissipates heat for the gas, but for the liquid It is said that its heat dissipation speed is obviously slower than that of gas heat dissipation, so when the water temperature sensor transmits a high temperature signal to the electronic control unit, the radiator fan starts to dissipate heat from the liquid, but because the radiator area is limited, before the liquid is well cooled Before heat dissipation, the liquid circulates into the engine again, and the high temperature liquid will cause damage to the engine, and it is very unsafe

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