Shift shock reducing system for continuously variable transmissi

Details Shift shock reducing system for continuously variable transmissi Shift shock reducing system for continuously variable transmissi

1995-09-14

1997-08-19

Marmor, Charles A.

Interrelated power delivery controls, including engine control

Transmission control

Engine controlled by transmission

477115, 477 43, 477 44, B60K 4104

Patent

active

056582170

ABSTRACT:
A shift shock reducing system for a continuously variable transmission detects power transmission ratio of the transmission. A shifting response delay of the transmission is determined depending upon a transmission speed ratio detected by a speed ratio detector. At a transition from a coasting state to a power-on driving state, a fuel recovery delay device issues a command for making a fuel cut-off device inoperative with a delay of a predetermined period derived on the basis of the shifting response delay set by a shifting response delay setting device, from detection of the transition by a driving condition transition detector, for synchronizing rising of the engine output with actual initiation of shifting of the transmission, associated with transition from coasting state to the power-on driving state, so as to effectively reduce the shift shock.

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patent: 5466199 (1995-11-01), Kobayashi et al.
patent: 5478293 (1995-12-01), Yonezawa

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