192 clutches and power-stop control – Vortex-flow drive and clutch – With brake
Patent
1978-03-24
1980-08-12
Krizmanich, George H.
192 clutches and power-stop control
Vortex-flow drive and clutch
With brake
B60K 4102
Patent
active
042168511
ABSTRACT:
A multi-functioning hydraulic transmission control circuit including interacting valve mechanism parts which, in response to a shift being called for in a clutch-cylinder-controlled multi-speed transmission, inaugurate a fill pressure flow to the clutch cylinders concerned, prior to the subsequent fluid pressure rise effected therein; thereafter, upon completion of the fill, the parts modulate pressure rise of the hydraulic clutch fluid from and at approximately actual clutch fill pressure up to, and remaining at, the final pressure of engagement.
These functions including full resetting of the parts at the beginning of each shift, and a lesser and a least gradual pressure rise afforded during respective second and third speed upshifts, are all accomplished by and among a pair of direction-selector and orificed-speed-selector valve spools connected to the transmission clutch cylinders to direct valve fluid output thereto selectively, and also 1st, dump valve, 2d, simulated clutch piston, 3d, load piston, 4th, modulator valve, and 5th, interacting spring parts collectively providing said directed valve fluid output, all in a valve bore common thereto, and arranged therein with the dump valve part confronted at one side by the simulated clutch piston part so as to define mutually therewith a differential pressure chamber in the bore, and confronted at the other side by a first side of the load piston part so as to define mutually with that first side a signal pressure chamber in the bore, and with an opposite side of the load piston part spacedly confronting the modulator valve part so that they mutually engage therebetween the interacting spring parts in the common bore.
REFERENCES:
patent: 2935999 (1960-05-01), Hock et al.
patent: 3033333 (1962-05-01), Breting et al.
patent: 3125201 (1964-03-01), Fisher
patent: 3181385 (1965-05-01), Siler
patent: 3352392 (1967-11-01), Black et al.
patent: 3444968 (1969-05-01), Golan et al.
patent: 3498150 (1970-03-01), Funk
patent: 3583422 (1971-06-01), Dack et al.
patent: 3618424 (1971-11-01), Golan et al.
patent: 3882738 (1975-05-01), Audiffred et al.
patent: 3991865 (1976-11-01), Komatsu
patent: 3998111 (1976-12-01), Blake
patent: 4046162 (1977-09-01), Rodeghiero
patent: 4100795 (1978-07-01), Panetti
patent: 4132302 (1979-01-01), Chatterjea
patent: 4135610 (1979-01-01), Chatterjea
AuBuchon F. David
Gaines John W.
International Harvester Company
Kamp Ronald C.
Krizmanich George H.
LandOfFree
Transmission clutches with fully-resetting modulator-load-piston 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 clutches with fully-resetting modulator-load-piston, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Transmission clutches with fully-resetting modulator-load-piston will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2179281