| 摘要 |
<p>The present invention relates to an automatic gearbox control device for automobiles which is applicable to any conventional mechanical gearbox and can be coupled to an existing vehicle without any major modification. The control device comprises : a source of pressure fluid, a double-action ratio-changing jack actuated by said pressure fluid through two electrovalves selectively, and an electrical regulating contactor propelled at a speed proportional to that of the vehicle and comprising two terminals selectively supplied with current by said regulator from the vehicle battery for supplying two connections to said electrovalves respectively, each of said connections comprising two contactors in parallel, namely a self-maintaining contactor activated by the ratio-changing member operatively connected to said jack and a maneuver contactor activated by the vehicle clutch i.e. which closes in the de-clutched position. The control device also includes means for automatically idling an associated engine or cutting off the fuel supply thereto during ratio shifting.</p> |
