Power train control apparatus for a vehicle

Details Power train control apparatus for a vehicle Power train control apparatus for a vehicle

1989-06-07

1991-09-10

Gruber, Felix D.

Boots, shoes, and leggings

180197, 3644241, 36442603, B60T 858, B60K 1302

Patent

active

050479407

ABSTRACT:
Slip control is carried out so as to reduce torque applied to the driven wheels by reducing torque generated by the engine when a slip value against the driven wheels on pavement is larger than a predetermined value. A shift characteristic of the automatic transmission interposed between the engine and the driven wheels is set as a first shift characteristic which is a basic characteristic at the time of ordinary running where no slip control is carried out and as a second shift characteristic set so as to become at least unlikely to cause downshifting during slip control compared with said first shift characteristic. As the slip control terminates, a return of the first shift characteristic is prohibited when the torque generated by the engine is large (for example, when a degree of operation of an accelerator is not zero) or when downshifting is caused if based on the first shift characteristics.

REFERENCES:
patent: 4484280 (1984-11-01), Brugger et al.
patent: 4583611 (1986-04-01), Frank et al.
patent: 4825367 (1989-04-01), Nagaoka et al.
patent: 4843552 (1989-06-01), Inagaki
patent: 4866618 (1989-09-01), Tamura et al.
patent: 4873639 (1989-10-01), Sato et al.

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