Shift control apparatus of continuously variable transmission

Details Shift control apparatus of continuously variable transmission Shift control apparatus of continuously variable transmission

1998-06-23

2000-04-18

Cuchlinski, Jr., William A.

Data processing: vehicles, navigation, and relative location

Vehicle control, guidance, operation, or indication

Transmission control

701 51, 701 56, 701 61, 477 43, 477 46, 477 49, G06F 1700

Patent

active

060526394

ABSTRACT:
A shift control apparatus outputs a command transmission ratio to a continuously variable transmission (CVT) to control a real transmission ratio of the CVT. The shift control apparatus comprises a shift mode determining section determines whether an actually selected shift mode is an automatic upshift or a power-down upshift (foot-release upshift), on the basis of the result of a previously selected shift mode, a difference between a final objective transmission ratio and a transient objective transmission ratio and a rate of change in the transmission ratio per time. The dynamic characteristic selecting section determines the dynamic characteristic according to the determined shift mode.

REFERENCES:
patent: 4916982 (1990-04-01), Suzuki
patent: 5099710 (1992-03-01), Nakano
patent: 5586953 (1996-12-01), Abo
patent: 5695428 (1997-12-01), Yuasa et al.
patent: 5790968 (1998-08-01), Kashiwabara et al.
patent: 5976054 (1999-11-01), Yasuoka

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