System for detecting torque of automatic vehicle transmission an

Details System for detecting torque of automatic vehicle transmission an System for detecting torque of automatic vehicle transmission an

1996-11-20

1998-03-10

Dombroske, George M.

Measuring and testing

Simulating operating condition

Marine

73112, 73862191, 180338, 180383, G01L 314

Patent

active

057263531

ABSTRACT:
The torque detection system for a continuously variable transmission for a vehicle having a dual-mass flywheel connecting an output of an engine mounted on the vehicle to the transmission and a start clutch for engaging/disengaging the transmitted power to the vehicle wheels. The dual-mass flywheel comprises of two flywheel components coupled by a torsion spring. Rotational speeds of the two flywheel components are detected and a phase angle therebetween is then calculated. A torque estimated to be input to the start clutch is determined by retrieving predetermined characteristics defining a static torque set with respect to the phase angle. When the vehicle is braked to stop in engine idling state, the clutch oil pressure is determined based on the calculated torque.

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Patent Abstracts of Japan vol. 95, No. 006, 31 Jul. 1995, JP 07 072024.

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