Integral control system for engine and automatic transmission

Details Integral control system for engine and automatic transmission Integral control system for engine and automatic transmission

1997-03-07

1999-03-02

Marmor, Charles A.

Interrelated power delivery controls, including engine control

Transmission control

Engine controlled by transmission

477 98, 477106, B60K 4106

Patent

active

058763015

ABSTRACT:
An integral control system for an engine and an automatic transmission, in which the engine torque is reduced at a shifting time by the automatic transmission. The control system comprises a mechanism for limiting the engine torque to a predetermined value or less prior to the start of a shift by the automatic transmission when a predetermined condition is satisfied at the time of the shift. The engine torque is continuously reduced to a predetermined value by throttling the throttle opening gradually by a throttle valve mechanism till the start of an inertia phase in the shift; is reduced by further throttling the throttle opening by the throttle valve mechanism in accordance with the start of the inertia phase; and is gradually returned by increasing the throttle opening continuously by the throttle valve mechanism after the torque reduction control.

REFERENCES:
patent: 4355550 (1982-10-01), Will et al.
patent: 4677880 (1987-07-01), Hattori et al.
patent: 5101687 (1992-04-01), Iwatsuki et al.
patent: 5109826 (1992-05-01), Kato
patent: 5211680 (1993-05-01), Sumimoto et al.
patent: 5309791 (1994-05-01), Takada et al.

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