HEAT-MACHINE COOLING MEDIUM TEMPERATURE REGULATOR Russian patent published in 2003 - IPC

FIELD: mechanical engineering. SUBSTANCE: invention relates to internal combustion engines and it can be used for automatically maintaining cooling medium temperature at preset level. Proposed cooling medium temperature regulator of heat machine contains coolant temperature transmitter coupled with main double-inlet pneumatic signal summer, outside air temperature transmitter coupled with additional double inlet pneumatic signal summer whose outlet is connected to main pneumatic signal summer designed for connection to operating mechanism of cooler fan drive and to pressure relay placed in electric control circuit of cooler shutters and is furnished with coolant temperature converter including coolant temperature transmitter and its signals amplifier, through which transmitter is coupled with upper pneumatic chamber of main summer, and outside air temperature converter including outside air temperature transmitter and its signal amplifier through which transmitter is coupled with upper pneumatic chamber and amplifier of additional summer. Main summer is connected to working medium source to which temperature converter amplifiers are connected, and additional summer is connected to amplifier of outside air temperature converters and to heat machine power signal source and by its outlet it is connected to lower pneumatic chamber of main summer of pneumatic signals. EFFECT: simplified design of regulator, reduced sluggishness, improved accuracy of coolant temperature regulation. 1 dwg