Transmission control apparatus and method for determining shift

Details Transmission control apparatus and method for determining shift Transmission control apparatus and method for determining shift

1984-09-26

1987-03-10

Dorner, Kenneth J.

Machine element or mechanism

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

Preselected indexed position

74856, 3644241, B60K 4118

Patent

active

046482911

ABSTRACT:
A transmission control is disclosed for a road vehicle for the determination of shift signals on downhill slopes. The invention includes a device for the determination of the stationary or constant speed drive torque M.sub.stat, which is necessary for the unaccelerated drive of the vehicle. The transmission control also includes a downhill gear classification device to coordinate the selection of a gear which is suitable for the downhill slope in question with a torque comparator in which various values of the stationary torque M.sub.stat are classified with the suitable downhill gear i.sub.x. A blocking element prevents a gear shift if a gear to be engaged by a shift command transmitter is higher than the suitable gear with the transmission ratio i.sub.x.

REFERENCES:
patent: 3640156 (1972-02-01), Mori et al.
patent: 3881368 (1975-05-01), Furuhashi et al.
patent: 4231092 (1980-10-01), Grob et al.
patent: 4373619 (1983-02-01), Schritt et al.
patent: 4386688 (1983-06-01), Sato et al.
patent: 4421192 (1983-12-01), Ito et al.
patent: 4422350 (1983-12-01), Muller et al.
patent: 4438664 (1984-03-01), Fiala
patent: 4471437 (1984-09-01), Yoshino et al.
patent: 4548079 (1985-10-01), Klatt

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