Anti-flare method using offgoing slip speed and rate of change o

Details Anti-flare method using offgoing slip speed and rate of change o Anti-flare method using offgoing slip speed and rate of change o

1992-08-31

1994-09-06

Braun, Leslie A.

Interrelated power delivery controls, including engine control

Transmission control

Transmission controlled by engine

3644241, B60K 4102

Patent

active

053437829

ABSTRACT:
In a computer-based control, pressure is progressively decreased in an off-going clutch for gradual release while pressure is progressively increased in an on-coming clutch. Positive off-going clutch slip and the rate of slip change are monitored to detect the onset of turbine flare. A control calculates a compensation pressure which is added to the on-coming clutch pressure to reduce the slip and thus the flare. The control calculates a term proportional to slip and an integral term when the slip and slip rate are positive. When the slip rate goes negative, the control calculates a negative integral term. All the calculated terms are combined to produce the compensation pressure value.

REFERENCES:
patent: 4653351 (1987-03-01), Downs et al.
patent: 4796490 (1989-01-01), Butts et al.
patent: 4969098 (1990-11-01), Leising et al.
patent: 5072390 (1991-12-01), Lentz et al.
patent: 5123302 (1992-06-01), Brown et al.

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