Engine turbine cooling system, control method and vehicle

Abstract

The invention provides a turbine cooling system of an engine, a control method and a vehicle. The turbine cooling system comprises a first cooling loop, a second cooling loop, a switching valve and acontroller; the first cooling loop comprises a heat dissipation module, a thermostat, a first water pump and the engine which are sequentially connected through a cooling pipeline, and the heat dissipation module is used for cooling the turbine; the second cooling loop comprises the heat dissipation module, the thermostat and a second water pump which are sequentially connected through a cooling pipeline; the first water inlet of the switching valve is connected with the engine, the second water inlet of the switching valve is connected with the second water pump, and the water outlet of the switching valve is connected with the heat dissipation module; and the controller is used for cooling the turbine through the first cooling loop when the engine operates, and controlling the switchingvalve to be switched to the second cooling loop so as to cool the turbine through the second water pump and the heat dissipation module when the engine is shut down and the temperature of the turbineis higher than the preset temperature. According to the system, the cooling efficiency of the turbine can be improved, and then the service life of the turbine can be prolonged.

Description

Technical field [0001] The present invention relates to the field of automobile technology, in particular to a turbine cooling system of an engine, a control method and a vehicle. Background technique [0002] After the car is driving at high speed and long distance, due to the long-term contact of the turbocharging system with the high temperature exhaust gas, the metal has high heat transfer efficiency, which will cause the turbine temperature to be very high. If the turbine temperature is not reduced to a reasonable range through a reasonable way, stop the engine directly Operation will cause turbine damage or many uncertain safety hazards. [0003] At present, the vehicle thermal management system has considered the turbine overheating factor, and uses the turbine cooling system to cool the turbine. A kind of turbine cooling system is on the traditional engine, directly adding a coolant channel or heat exchanger to the turbine, and interacting with the engine cooling system In...

AI Technical Summary

Problems solved by technology

However, many drivers do not have this experience and stop directly to damage the life of the turbine. Even if the driver drives at a low speed or idles for a while to cool down the temperature of the turbine, it will waste time and energy

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