| 摘要 |
1445377 Change-speed gear control NISSAN JIDOSHA KK 24 Oct 1973 [28 Oct 1972] 49491/73 Heading F2D The subject-matter of this Specification is substantially the same as that described in Specification 1,445,378 but the claims are concerned with the provision, in an automatic transmission for vehicles comprising an hydraulic control circuit with a plurality of shift valves controlling engagement and disengagement of frictional elements, e.g. clutches and brakes, of pressure regulating means which reduces the pressure supplied through the shift valves to the frictional elements when the vehicle accelerator pedal is in, or returning to, its idle position. |
