192 clutches and power-stop control – Transmission control and clutch control – Common control
Patent
1982-12-27
1985-07-09
Bonck, Rodney H.
192 clutches and power-stop control
Transmission control and clutch control
Common control
192 0092, 74866, F16D 2102, F16D 4328, F16D 4330
Patent
active
045276781
ABSTRACT:
A control system for transferring torque from a first, offgoing clutch to a second, oncoming clutch while a gear shift is being made includes speed sensors for determining the speeds of the engine shaft and the output shaft of the transmission, a gear selector position indicator, a throttle position indicator and a gear ratio sensor. Solenoid operated valves open and close a source of high pressure fluid to the clutches, whose engagement and disengagement holds the gear elements of the transmission by means of which the various speed ratios are produced. An electronic computer is supplied with the digital equivalent of the shaft speeds, the position of the gear selector and of the throttle. The engine speed-output shaft speed ratio is used as a feedback signal on the basis of which an error between its value and a commanded value is determined. An equation for determining the duty cycle is repetitively calculated and its value converted to a pulse width modulated electrical current that is applied to the solenoid windings. The equation corrects a previously calculated duty cycle with the feedback error value.
REFERENCES:
patent: 3448640 (1967-06-01), Nelson
patent: 3640156 (1972-02-01), Mori et al.
patent: 3754482 (1973-08-01), Sanders et al.
patent: 4131036 (1978-12-01), Ivey et al.
patent: 4361060 (1982-11-01), Smyth
patent: 4428467 (1984-01-01), Hiramatsu
Brown Larry T.
Jain Pramod K.
Pierce Stanley L.
Bonck Rodney H.
Ford Motor Company
Harrington Donald J.
McKenzie Frank G.
Towner Alan G.
LandOfFree
Transmission clutch control system and method does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Transmission clutch control system and method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Transmission clutch control system and method will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-904790