Clutch control in a multiple clutch type gear transmission for a

Details Clutch control in a multiple clutch type gear transmission for a Clutch control in a multiple clutch type gear transmission for a

1982-12-30

1985-02-05

Krizmanich, George H.

Machine element or mechanism

Rotary member or shaft indexing, e.g., tool or work turret

Preselected indexed position

74869, 74336R, 74337, 192 0032, 192 0092, B60K 4118, B60K 4116

Patent

active

044972229

ABSTRACT:
A multiple clutch type transmission including a plurality of input shafts, a plurality of clutch devices for releasably and alternately connecting respective ones of the input shafts with an engine output shaft, each of said input shafts being associated with at least one set of transmission gears for connecting the input shaft associate therewith to an output element of the transmission, means for controlling the clutch devices so that selected one of the input shaft is connected through selected one of the clutch devices with the engine output shaft and through selected set of the transmission gears with the output element. There is disclosed a method of controlling the clutch devices in gear shift down operation, which comprises steps of disengaging the clutch device which has been in engagement for connecting the engine output shaft with one of the input shaft so that all of the clutch devices are maintained in disengaged conditions to allow engine speed to increase, and then engaging other clutch device to connect the other input shaft having the transmission gear set of lower gear stage.

REFERENCES:
patent: 2376545 (1945-05-01), Livermore
patent: 2633035 (1953-03-01), Livermore
patent: 2739679 (1956-03-01), Randol
patent: 4023443 (1977-05-01), Usui et al.
patent: 4456107 (1984-06-01), Ito et al.
Auto Car--Mar. 20, 1980--p. 15.
Auto Car--May 23, 1981.

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