INTERNAL COMBUSTION ENGINE STARTING PREHEATING SYSTEM (VERSIONS) Russian patent published in 2003 - IPC

FIELD: transport engineering. SUBSTANCE: invention can be used in motor transport pools, garages, parking of passenger cars. Proposed preheating system of internal combustion engine contains electric heater of cooling liquid in form of housing with thermoregulator and branch pipes connected to thermostat, radiator and cooling liquid transfer pump, respectively. Housing is furnished with cover with seal. Sealing unit in form of bushing with bead, washer, nut and gasket is mounted in cover. Bushing is rigidly coupled with heating element. System is connected to supply mains, and cooling liquid delivered from radiator into housing is heated to preset temperature by heating element after which liquid is delivered to thermostat by thermosiphon method. According to other design version, housing of preheater is provided with one branch pipe, and its diameter is made to suit size of hole for stopper in cylinder block. Proposed systems are ecologically clean and simple in manufacture and operation. EFFECT: no adverse effect on environment at prestarting heating of internal combustion engine. 3 cl, 4 dwg