Motor cooling water pump assembly and flow-quantity controlling method thereof

Abstract

The invention discloses a motor cooling water pump assembly and a flow-quantity controlling method of the motor cooling water pump assembly. According to the water pump assembly, a first rotating valve and a second rotating valve are arranged on a water pump shell body, a motor electronic control unit (ECU) controls the opening degree of the first rotating valve and the second rotating valve through a stepping motor according to the environment temperature and operating conditions of the motor so as to achieve rapid adjustment of the temperature of the motor, the ECU records the rotating angle value of the stepping motor simultaneously when the flow quantity is adjusted to be appropriate, the rotating angle value is used for replacing corresponding controlling data stored in the ECU, and the controlling data can be updated in real time. According to the motor cooling water pump assembly, the motor is short in warming-up time and can avoid overcooling when being under partial load, the temperature control of the motor is rapid and accurate, and therefore burning of the motor is more sufficient, discharge of the motor is reduced, and the economical performance of the motor is improved.

Description

technical field [0001] The invention relates to an engine cooling water pump of an automobile, in particular to a water pump assembly which can automatically adjust the flow of engine cooling water according to the working conditions of the engine to control the temperature of the cooling water, and a corresponding flow control method. Background technique [0002] Automobile engines have an optimal working temperature, at which temperature, the fit gap between various running parts is in the best state, at this time, the engine has high working efficiency, more complete combustion, and can minimize engine emissions . At present, the temperature control of automobile engines is usually realized by a wax-type thermostat with main and auxiliary valves. The thermostat controls the opening and closing of the main valve and the auxiliary valve at the same time. The main valve is used to control the large circulation channel of cooling water , while the auxiliary valve is used to...

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Problems solved by technology

[0005] The purpose of the present invention is to solve the problems in the prior art that the temperature of the engine cannot be accurately controlled according to the actual working conditions of the engine and the large fluctuation of the engine water temperature, and to provide a system that can quickly and accurately control the engine according to the actual working conditions of the engine. The engine cooling water pump assembly and the corresponding flow control method, so that the engine can be warmed up quickly when the engine is hot, and the cooling effect of the engine at part load can be improved, so that the combustion of the engine can be more complete, the emission of the engine can be reduced, and the economy of the engine can be improved. performance

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