Engine coolant waste heat utilization warm-up system and method using solid-liquid phase change heat storage device

Abstract

The invention discloses an engine coolant waste heat utilization engine warming system adopting a solid-liquid phase change heat reservoir and a method of the engine coolant waste heat utilization engine warming system. The system comprises a temperature sensor, an electronic thermostat, an electronic fan, a radiator, the solid-liquid phase change heat reservoir, an electronic three-way valve and an MCU. Coolant flows through the phase change heat reservoir to heat phase change materials. The phase change happens to the phase change materials, the phase change materials absorb a large amount of latent heat, and residual heat of an engine is transferred into the phase change heat reservoir to be stored and used for starting engine warming. The electronic thermostat and the electronic three-way valve are controlled by the MCU and kept running synchronously all the time. The premise that normal work of an engine cooling system is not influenced is ensured. After the engine stops, large circulation is closed through the electronic thermostat and the electronic three-way valve. The phase change heat reservoir is sealed and enters the energy preservation state. Thus, under the condition that the existing engine power consumption is hardly increased, waste heat recycle is achieved. The engine warming starting process is achieved under the condition that the engine power consumption is not increased.

Description

technical field [0001] The invention relates to an engine start-up warm-up system using a solid-liquid phase change heat storage device, in particular to an engine coolant waste heat utilization warm-up system and a method thereof using a solid-liquid phase change heat storage device. The heater recovers the heat energy carried away by the coolant and uses it to start and warm up the engine. Background technique [0002] Due to the impact of internal combustion engine-powered vehicles on urban environmental pollution and global energy issues, energy conservation and emission reduction has become an important research direction for automotive engines. Based on the latest research progress in the world, there are two key technical approaches to improve the efficiency of internal combustion engines: one is the new generation of internal combustion engine combustion theory and technology aimed at organizing the efficient and clean combustion process in the cylinder of the intern...

AI Technical Summary

Problems solved by technology

/ / When the car starts cold, due to the low temperature of the coolant, on the one hand, the content of exhaust HC, CO, and particulate matter is high; on the other hand, the engine parts are poorly lubricated, resulting in increased friction and wear; , cold start is more difficult than hot start, especially diesel engine

Starting the warm-up can improve the above problems. However, in the current research at home and abroad, the starting warm-up technology usually uses electric heaters to heat the coolant. This method requires a lot of power for the heater, and the car battery is only 12V. The current is too large and the power consumption is too high; the charging of the battery is also converted by the engine through the belt to drive the generator, which consumes fuel, which not only reduces the conversion efficiency, but also causes waste of fossil fuels

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