Transient reduction ratio control during shift between two mode

Details Transient reduction ratio control during shift between two mode Transient reduction ratio control during shift between two mode

1989-11-16

1991-06-11

Diehl, Dwight

Machine element or mechanism

Rotary member or shaft indexing, e.g., tool or work turret

Preselected indexed position

74867, 3644241, 474 18, B60K 4112

Patent

active

050222856

ABSTRACT:
According to a control for a continuously variable transmission for a motor vehicle, in order to avoid a rapid increase in engine revolution speed upon selecting a power mode from an ordinary mode, the reduction ratio of the continuously variable transmission is varied along a third schedule which connects an ordinary shift schedule for the ordinary mode with a power shift schedule for the power mode. The third schedule is expressed as a funtion of time that has pressed since the instant when the power mode has been selected.

REFERENCES:
patent: 4509125 (1985-04-01), Fattic et al.
patent: 4735113 (1988-04-01), Yamamuro et al.
patent: 4764155 (1988-08-01), Kumura et al.
patent: 4793217 (1988-12-01), Morisawa et al.
patent: 4796489 (1989-01-01), Nagamatsu et al.
patent: 4846019 (1989-07-01), Kumura
patent: 4875892 (1989-10-01), Sueda

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