Method for vehicle sub-transmission shift control

Details Method for vehicle sub-transmission shift control Method for vehicle sub-transmission shift control

1979-07-24

1982-01-26

Braun, Leslie

Machine element or mechanism

Rotary member or shaft indexing, e.g., tool or work turret

Preselected indexed position

74740, 74856, 74864, 74866, B60K 4110, B60K 4106, F16H 3700

Patent

active

043122485

ABSTRACT:
A method is disclosed for automatically shifting the subtransmission of a vehicle which is also equipped with a manual transmission operated by hand by the driver. When the driver shifts by hand to a certain gearing ratio, a vehicle operating parameter is detected, and, on the basis of this detected value, the procedure for shifting the sub-transmission is modified. Shift control of the sub-transmission is then performed in accordance with this modified sub-transmission shift procedure, while the manual transmission remains in this gearing ratio.

REFERENCES:
patent: 2637222 (1953-05-01), Backus
patent: 2654268 (1953-10-01), Perkins
patent: 2763290 (1956-09-01), Perkins et al.
patent: 3695122 (1972-10-01), Irie et al.
patent: 3710651 (1973-01-01), Marumo et al.
patent: 3759344 (1973-09-01), Blee
patent: 3827315 (1974-08-01), Lupo
patent: 3939722 (1976-02-01), Stromberg
patent: 3942293 (1976-03-01), Forster et al.
patent: 3943799 (1976-03-01), Sakai
patent: 4102222 (1978-07-01), Miller et al.
patent: 4172505 (1979-10-01), Rabus et al.

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