FIELD: mechanical engineering; engines. SUBSTANCE: proposed temperature controller for heat machinery, mainly for internal combustion engines, has cooling liquid temperature converter and pressure adder provided with three inlet branch pipes. One of these branch pipes is connected to cooling liquid temperature converter, and two other branch pipes are designed for connection, one, to compressed medium source, and the other, to heat engine power pneumatic signal source. One outlet branch pipe is connected to drive of cooler fan and to pressure relay placed in electric control circuit of cooler louvers. Amplifier of cooling liquid temperature converter has inlet branch pipe for connection to compressed medium source. Adder is provided with additional diaphragm with effective area 1.8-2.2 times smaller than main diaphragm area, and with at least one throttling hole. EFFECT: improved accuracy of control of cooling liquid owing to quick response and reduced sluggishness temperature controller. 2 cl, 1 dwg
