THERMOSTAT FOR COOLING SYSTEM OF INTERNAL COMBUSTION ENGINE Russian patent published in 1994 - IPC

FIELD: engine engineering. SUBSTANCE: thermostat has case 1, inlet branch pipes 2,3, outlet branch pipe 4 and temperature control unit 5. Unit 5 has bushing 6 fixed in case 1, rotatable gate 7 positioned over periphery of bushing 6 and coaxially to it and the inlet branch pipes, spiral thermo-sensitive spring 8 made of a material having form memory ( e.g. manganese-copper alloy), and pins 9,10. Spring 8 is Arhimedean spiral and secured to gate 7 via screw 11 by its inner end. Bushing 6 has inner baffle 12, that separates spaces of inlet branch pipes 2,3, and rectangular openings 13,14 arranged concentrically. Openings provided in inlet space of branch pipe 2 has angular shift with respect to openings arranged in inlet space of branch pipe 3. Gate 7 has rectangular openings arranged concentrically. Openings adjacent to inlet spaces of branch pipes 2,3 are coaxially alined. EFFECT: enhanced reliability. 5 cl, 2 dwg