Control method and control device for electronic water pump of engine and vehicle

Abstract

The invention relates to the technical field of engine cooling, and discloses an engine electronic water pump control method, when an electronic water pump enters a warm-up mode, control parameters of the electronic water pump are set according to a pre-configured water pump intermittent working rule, and according to the current engine rotating speed, the current engine load and the current vehicle speed which are collected in real time, the control parameters of the electronic water pump are set; the method comprises the following steps: determining a heat risk evaluation parameter of an engine, adjusting a control parameter of an electronic water pump according to the heat risk evaluation parameter of the engine, and controlling the electronic water pump to intermittently work in a warm-up mode according to the adjusted control parameter of the electronic water pump, therefore, control in the engine warming-up process is automatically optimized, the overheating risk of the engine is actively evaluated, and the engine warming-up duration is greatly shortened under the condition that the engine is prevented from being overheated. Meanwhile, the embodiment of the invention further correspondingly provides a control device of the engine electronic water pump and a vehicle.

Description

technical field [0001] The present invention relates to the technical field of engine cooling, and in particular, to a control method, a control device and a vehicle for an electronic water pump of an engine. Background technique [0002] At present, there are four main types of water pumps used in vehicles on the market: mechanical water pumps, clutch water pumps, electronic water pumps and variable flow water pumps. Among them, the speed of the mechanical water pump is related to the engine through the pulley, and the flow rate cannot be adjusted independently. The clutch-type water pump can realize rapid warm-up through intermittent operation during the warm-up process, but the clutch-type water pump is the same as the mechanical water pump, and the power comes from For the engine, the rotation speed of the whole vehicle is proportional to the engine, and the active adjustment of the flow cannot be realized. The electronic water pump is powered by the battery and does no...

AI Technical Summary

Problems solved by technology

The structure of the on-off valve is simpler than that of the clutch-type water pump, but it can only be turned on and off, there is no intermediate change process, no stepless adjustment, and no active diagnosis

The current electronic water pump is mainly controlled by the measured temperature. However, the engine warm-up time is relatively long under this current control method.

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