LIQUID-COOLED AUTOMOBILE ENGINE HEATER Russian patent published in 2000 - IPC

FIELD: transport engineering. SUBSTANCE: invention relates to starting preheaters for liquid-cooled internal combustion engines, and heating of driver's cab and passenger compartment at below zero ambient temperatures by using heat of exhaust gases of engine and extracted heat of engine cooling system, including heat accumulated in heat accumulator. Device has heat exchanger installed on engine exhaust pipe, heat accumulator connected with suction line of first pump coupled with engine cooling system, and three-line distributor. Device is furnished additionally with five-position five-line distributor, and three- line distributor which is made three-position. Three-position and five- line distributors can close the following circuits: liquid heat carrier circulation circuit including heat accumulator, first pump and engine cooling system; circuit including heat exchanger, second pump and engine cooling system; circuit including heat exchanger, heat accumulator, first pump and engine cooling system; circuit including heat exchanger, heat accumulator and first pump; circuit including engine cooling system and second pump. EFFECT: provision of quick and reliable preheating and starting of engine. 2 cl, 1 dwg