Cooling system for use in thermal engine of drive unit of car for cooling compressed supercharging air or recovered exhaust fume, has accelerometer placed so as to measure exchanger vibrations in order to detect bursting of vapor bubbles

摘要

The system (13) has an exchanger (17) in which a liquid coolant i.e. glycol water, is circulated. An accelerometer (25) is placed adjacent to the exchanger so as to measure vibrations of the exchanger for detecting bursting of vapor bubbles of the coolant at a coolant boiling point. The accelerometer has a piezoelectric sensor and a strain gauge, and is placed on a liquid coolant outlet of the exchanger. The accelerometer is placed on a casing of the exchanger that is formed as a plate heat exchanger. The accelerometer is connected to a control unit (23) of a coolant circulating pump (21). Independent claims are also included for the following: (1) a drive unit for a car (2) a method for regulating a circulating pump of a coolant circuit.