Cooling system for vehicle with hybrid propulsion

摘要

The cooling system has a coolant fluid circulating between a heat engine (7) and electric drive motors (6). The fluid passes through a radiator (1) with multiple cooling passages to exchange heat between the fluid and air passing through the radiator. Where the motors are controlled by electronic switches the heat they dissipate is also removed by the coolant fluid. When the heat engine is stopped and the electric motors are operating the coolant fluid circulates in a first part of the radiator only. When both the heat engine and the electric motors are operating the coolant fluid passes through both parts of the radiator. Provision is made to block off part of the radiator when reduced cooling capacity is needed.