Transmission shift control system and method

Details Transmission shift control system and method Transmission shift control system and method

1998-10-08

1999-12-14

Cuchlinski, Jr., William A.

Data processing: vehicles, navigation, and relative location

Vehicle control, guidance, operation, or indication

Transmission control

701 52, 701 53, 701 54, 701 67, 701 68, 701 69, 477 34, 477 37, 477 39, 477 46, G06F 1500

Patent

active

060029765

ABSTRACT:
A vehicle power shift transmission (PST) is controlled by a transmission control system which implements a control method. The PST is part of the driveline of the vehicle and is shifted by an actuating mechanism. The driveline includes an engine, the PST, a clutch, a synchronized shift transmission that can be shifted by a shift lever and driven vehicle wheels. In order to simplify the operator's tasks, during the shift of the synchronized shift transmission the gear of the PST is automatically shifted so that the resulting difference in the gear ratio of the complete transmission before and after the shift is minimized. The gear of the PST is selected and shifted automatically so that the rotational speeds on both sides of the clutch differ as little as possible.

REFERENCES:
patent: 4324153 (1982-04-01), Sugimoto et al.
patent: 4425620 (1984-01-01), Batcheller et al.
patent: 4722248 (1988-02-01), Braun
patent: 5109730 (1992-05-01), Zahn et al.
patent: 5152191 (1992-10-01), Sato et al.
patent: 5435212 (1995-07-01), Menig

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