Shock reducing apparatus for an automatic transmission

Details Shock reducing apparatus for an automatic transmission Shock reducing apparatus for an automatic transmission

F - Mech Eng,Light,Heat,Weapons

16

H

74/144

F16H 61/06 (2006.01) F16H 59/20 (2006.01) F16H 61/04 (2006.01)

Patent

CA 1143594

Abstract of the Disclosure A transmission includes a plurality of friction units to effect shifting between gear ratios, one of which includes driving and driven elements which may operate with a speed differential at the time of shifting between gear ratios. A first or line pressure is generated which is variable in a first pattern corresponding approximately to the pattern of torque output of the vehicle engine. This pressure is supplied to a friction unit other than the one friction unit to operate such other friction unit. A second pressure is generated which is variable in a second pattern corresponding approximately to a combination of the pattern of the engine torque output and the pattern of differential speed between the driving and driven elements of said one friction unit at the time of engagement of the elements. The second pressure is directed to said one friction unit to operate such one friction unit.

336380

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