Apparatus and method for control of a vehicle fitted with an aut

Details Apparatus and method for control of a vehicle fitted with an aut Apparatus and method for control of a vehicle fitted with an aut

1994-02-25

1995-11-21

Wright, Dirk

Interrelated power delivery controls, including engine control

Transmission control

Continuously variable friction transmission

B60K 4114

Patent

active

054681952

ABSTRACT:
With an engine wherein the setting of a target air-fuel ratio is changed in accordance with operating conditions, and the air-fuel ratio of the engine intake mixture is controlled in accordance with the target air-fuel ratio, a gear ratio in an automatic continuously variable transmission fitted to the engine is forcibly changed towards a ratio which suppresses changes in vehicle drive torque, at the time of changing the setting of the target air-fuel ratio. As a result even with a rapid change in engine output torque following a change in the target air-fuel ratio, a rapid change in the vehicle drive torque can be suppressed, so that vehicle driving stability can be improved.

REFERENCES:
patent: 4546673 (1985-10-01), Shigematsu et al.
patent: 4720793 (1988-01-01), Watanabe et al.
patent: 4905544 (1990-03-01), Ganoung
patent: 5243881 (1993-09-01), Hayashi

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