Method and apparatus for control of gear changing under load in a transmission

摘要

PCT No. PCT/DE82/00182 Sec. 371 Date Apr. 11, 1983 Sec. 102(e) Date Apr. 11, 1983 PCT Filed Sep. 7, 1982 PCT Pub. No. WO83/01042 PCT Pub. Date Mar. 31, 1983.A method and an apparatus are proposed for control of gear changing under load in a transmission of a vehicle driven by an internal combustion engine. In all gear changing instances, the hydraulic pressure upon the frictionally engaged elements is established with a constant slippage time proportionally to the sum of the engine torque and the product of the engine speed and a constant factor. The constant factor depends on the slippage time and on the gear changing instance (FIG. 1).