Control system for engine coolant flow has engine coolant and crankcase oil temperature sensors and delivers output signal based on target coolant pump rpm determined by electronic control device

摘要

The system has two sensors (12,16) to measure the temperature of engine coolant and crankcase oil in the engine and deliver output temperature signals (14,18). An electronic control device (10) determines a target coolant pump rpm based on the temperature signals and outputs a control signal for the rpm of the coolant pump, which indicates the maximum pump rpm. An Independent claim is included for a method to control the speed of an engine coolant pump motor.