| 摘要 |
<p>A device controlling the richness of the fuel/oxidant mixture prepared by a carburettor comprises a containment divided into two chambers of variable volume (10, 13) by a movable assembly with a deformable diaphragm (9). At rest, the diaphragm (9) blocks communication between a first conduit (8) connected to a source of additional gas and a second conduit (5) connected to the base of the idling well of the carburettor. The deformable diaphragm (9) is pierced in order, at rest, to put the second conduit (5) in communication with the second chamber (10) of variable volume. The control device comprises adjustment means (20, 21) which act jointly, additively or subtractively with the device for the return of the movable assembly, in order to set the opening and closing threshold of the deformable diaphragm (9). <IMAGE></p> |
