APPARATUS FOR CONTROLLING AUXILIARY HEATER OF ENGINE WITH FLUID COOLING Russian patent published in 1994 - IPC

FIELD: engine engineering. SUBSTANCE: first circulating contour includes engine, heat exchanger with a fan providing air flow, heater, and pump. The second circulating contour includes heat exchanger, heater, and pump only and by-passes the engine. One two- stroke valve directs fluid either to the first or to the second circulating contour. There is a timer which directs fluid trough the first circulating contour during a given time interval automatically and at a given time moment. The fan, which creates an air flow, is turned-on with a thermostat and operates at low speed of rotation when the engine is not in operation and is turned-on with a unit for manually controlling speed of rotation, when the engine is in operation. EFFECT: enhanced reliability. 17 cl, 3 dwg