Device for regulating the intake air temperature in an...

F - Mech Eng,Light,Heat,Weapons – 02 – M

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F02M 31/06 (2006.01)

Patent

CA 2226830

A device is disclosed for regulating the intake air temperature in an internal combustion engine. It comprises a cold air duct (10), a warm air duct (11) and a mixed air duct (12). The mixed air duct (12), also called primary air duct, is provided with a control flap (18) which in one final position closes off the cold air duct (10) and in the other final position closes off the warm air duct (11) and can pivot under the action of a wax-type thermostat (14) around which the cold intake air flows. The wax-type thermostat (14) is provided with a tie rod (16) connecting it to the control flap (18). A restoring spring (26) is located on the tie rod (16). In addition, an excess travel spring (24) is provided to compensate for the excess travel of the wax-type thermostat (14). The control flap has longitudinal guiding means (21) designed to take up the excess travel, the excess travel spring (24) being mounted on longitudinal guiding means (21).

Présentation d'un dispositif servant à régler la température d'admission d'air d'un moteur à combustion interne. Il comprend un conduit d'air froid (10), un conduit d'air chaud (11) et un conduit d'air mélangé (12). Le conduit d'air mélangé (12), appelé également conduit d'air primaire est muni d'un volet de commande (18) qui, dans une position de fonctionnement, ferme le conduit d'air froid (10) et, dans une autre position de fonctionnement, ferme le conduit d'air chaud (11) et il peut pivoter sous l'effet d'un thermostat à cire (14) autour duquel s'écoule l'air d'admission. Ce thermostat (14) possède une tige (16) qui le relie au volet de commande (18). Un ressort de rappel (26) est placé sur la tige (16) qui le relie au volet de commande (18). De plus, un ressort limiteur de course (24) est fourni afin de compenser le déplacement excessif du thermostat à cire (14). Le volet de commande comporte des guides longitudinaux (21) conçus pour rattraper le déplacement excessif, puisque le ressort limiteur de course (24) est installé sur les guides longitudinaux (21).

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