Detecting clutch slippage to measure drive line torque for...

Details Detecting clutch slippage to measure drive line torque for... Detecting clutch slippage to measure drive line torque for...

2005-04-19

2005-04-19

McCall, Eric S. (Department: 2855)

Measuring and testing

Simulating operating condition

Marine

Reexamination Certificate

active

06880393

ABSTRACT:
A method for controlling clutch pressures during power shifts involving detecting clutch slippage, utilizing individual pressure control. In the shift, the pressure in the off-going clutch is ramped down over a time interval, for instance, an interval of from about 0.10 seconds to about 0.15 seconds, while the ratio of input speed to output speed is determined at more frequent intervals, such as about 0.01 second intervals, such that torque can be determined as a function of the clutch slippage. The speed ratio is checked frequently, for instance, 10 to 15 times during the ramp down of clutch pressure, resulting in 10 to 15 measured torque levels, to allow more precise adjustment of pressure in the off-going clutch, as well as the on-coming clutch.

REFERENCES:
patent: 5046176 (1991-09-01), Lin
patent: 5109696 (1992-05-01), Bright et al.
patent: 5211079 (1993-05-01), Runde et al.
patent: 5251132 (1993-10-01), Bulgrien
patent: 5333709 (1994-08-01), Bulgrien
patent: 5487004 (1996-01-01), Amsallen
patent: 5580332 (1996-12-01), Mitchell et al.
patent: 5778329 (1998-07-01), Officer et al.
patent: 5950789 (1999-09-01), Hosseini
patent: 6007458 (1999-12-01), Ohashi et al.
patent: 6193630 (2001-02-01), Janasek et al.
patent: 6435049 (2002-08-01), Janaset et al.
patent: 6560549 (2003-05-01), Fonkalsrud et al.

Affiliated with

Also associated with

Rating

Detecting clutch slippage to measure drive line torque for... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Detecting clutch slippage to measure drive line torque for..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Detecting clutch slippage to measure drive line torque for... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3441536