192 clutches and power-stop control – Vortex-flow drive and clutch – With brake
Patent
1983-01-13
1985-01-22
Krizmanich, George H.
192 clutches and power-stop control
Vortex-flow drive and clutch
With brake
192 0092, 74868, 74877, 74871, B60K 4116, F16D 2104
Patent
active
044946406
ABSTRACT:
A hydraulic control device for automatic transmissions of the type where pressurized fluid activates a gear shift element, e.g., a forward clutch, includes a shift valve to selectively interrupt the delivery of pressurized fluid to disengage a gearshift element. The position of the shift valve is determined by an accelerator-pedal-position-dependent pressure, which is delivered through a throttle point and a control valve, preferably the so-called kick-down valve, the latter regulating the delivery of the load-dependent pressure. When the accelerator pedal is released, the control valve vents the fluid line leading to the shift valve, which causes shifting of the shift valve and disengagement of the gearshift element. When the accelerator is again depressed, pressurized fluid is delivered to the shift valve through the throttle point, to re-engage the gearshift element smoothly. However, if the accelerator pedal is depressed beyond a predefined position, the control valve by-passes the throttle, so as to deliver pressurized fluid quickly and re-engage the transmission element without delay.
REFERENCES:
patent: 2953940 (1960-09-01), Slemmons
patent: 3181386 (1965-05-01), Schaefer
patent: 3273679 (1966-09-01), Uher
patent: 3580112 (1971-05-01), Dach
patent: 3656600 (1972-04-01), Kitano et al.
patent: 3738198 (1973-06-01), Kell
patent: 4126154 (1978-11-01), McQuinn
patent: 4248333 (1981-02-01), Matsumoto et al.
patent: 4313353 (1982-02-01), Honig
patent: 4331045 (1982-05-01), Piech et al.
Krizmanich George H.
Volkswagenwerk Aktiengesellschaft
Wright Dirk
LandOfFree
Hydraulic control device for an automatic transmission does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Hydraulic control device for an automatic transmission, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hydraulic control device for an automatic transmission will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-562219