Shift up clutch control in a multiple clutch type gear transmiss

Details Shift up clutch control in a multiple clutch type gear transmiss Shift up clutch control in a multiple clutch type gear transmiss

1982-12-30

1985-05-21

Krizmanich, George H.

Machine element or mechanism

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

Preselected indexed position

74336R, 74337, 74869, B60K 4118, B60K 4116, F16H 552

Patent

active

045178593

ABSTRACT:
First and second clutch devices releasably and alternately connect respective transmission input shafts with an engine output shaft. The input shafts are connected through respective sets of transmission gears with a transmission output element. In a gear shift up operation, one of the clutch devices, which has not been in driving engagement, is brought into partial engagement with a first engaging speed for a first period of time, while the second clutch device remains in driving engagement, so that there is a certain period of time overlap wherein both clutch devices are in engagement simultaneously. After the second clutch device has been disengaged, the engagement speed of the first clutch device is decreased to a lower speed and then again increased to a higher speed.

REFERENCES:
patent: 3215001 (1965-11-01), Zundel
patent: 3719108 (1973-03-01), Sakai
patent: 3733932 (1973-05-01), Uozumi et al.
patent: 3747439 (1973-07-01), Uozumi et al.
patent: 3782216 (1974-01-01), Sakai
patent: 3855880 (1974-12-01), Ishimaru et al.
patent: 4033203 (1977-07-01), Hirosawa et al.
patent: 4140031 (1979-02-01), Sibeud et al.
patent: 4324156 (1982-04-01), Iwanaga et al.
patent: 4361060 (1982-11-01), Smyth
patent: 4413536 (1983-11-01), Whitney et al.
patent: 4442727 (1984-04-01), Young
"Two Clutch Variations", by Jeffrey Daniels; AUTOCAR, w/e May 23, 1981; pp. 36-37.

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