Speed ratio control for a step-lessly variable vehicle transmiss

Details Speed ratio control for a step-lessly variable vehicle transmiss Speed ratio control for a step-lessly variable vehicle transmiss

1987-04-27

1989-01-10

Staab, Lawrence

Machine element or mechanism

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

Preselected indexed position

74862, B60K 4112

Patent

active

047964898

ABSTRACT:
A control system for controlling a steplessly variable power transmission device for a motor vehicle. The speed ratio of the transmission mechanism is based upon vehicle operating conditions, and particularly upon the vehicle speed and the engine load, either in terms of throttle setting or engine load pressure. Manual selector means are provided to select one of two control mode patterns for either economical operation or for power operation, and each of the control modes provides a different ratio of transmission input speed to output speed.

REFERENCES:
patent: 4161894 (1979-07-01), Giacosa
patent: 4428257 (1984-01-01), Meyerle et al.
patent: 4459879 (1984-07-01), Miki et al.
patent: 4515040 (1985-05-01), Takeuchi et al.
patent: 4515041 (1985-05-01), Frank et al.
patent: 4523281 (1985-06-01), Noda et al.
patent: 4533340 (1985-08-01), Abo et al.
patent: 4669335 (1987-06-01), Matsuoka et al.

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