Method for smoothing skip up-shifts in automatic/semi-automatic

Details Method for smoothing skip up-shifts in automatic/semi-automatic Method for smoothing skip up-shifts in automatic/semi-automatic

1989-01-03

1990-04-03

Bonck, Rodney H.

192 clutches and power-stop control

Transmission control and clutch control

Interrelated

192 355, 192 362, 3644241, B60K 4122, B60K 4128

Patent

active

049132695

ABSTRACT:
A method for smoothing skip up-shifts in an automated mechanical transmission system (10) without requiring direct sensing of the rotational speed of the engine (14) is provided. The method involves delaying re-engagement of the master clutch (16) after engagement of a selected transmission ratio (E) during a skip up-shift by a period of time (T) directly proportional to the number (N) of ratios skipped and/or a function of the identity of the newly engaged ratio.

REFERENCES:
patent: 4081065 (1978-03-01), Smyth et al.
patent: 4361060 (1982-11-01), Smyth
patent: 4373619 (1983-02-01), Schritt et al.
patent: 4576065 (1986-03-01), Speranza et al.
patent: 4595986 (1986-06-01), Daubenspeck et al.
patent: 4621545 (1986-11-01), Mohl
patent: 4648290 (1987-03-01), Dunkley et al.
patent: 4732055 (1988-03-01), Tateno et al.

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