Method for modifying an automatic transmission and gear train
AssigneeAxiom Automotive Technologies, Inc.
InventorsScott R. Dalenberg, Theodore V. Kachel, John W. Creighton
Life of this patent
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Abstract
The present invention relates to methods for modifying automatic transmissions and gear trains. In particular, the instant invention relates to methods for modifying an automatic transmission gear train in order to improve resistance to deterioration. The modified gear grain of the instant invention comprises eight pinion gears assembled into one carrier utilizing a forward and a rear sun gear, a ring gear, a band drum and a one way roller clutch.
Claims20
A method of modifying a 180C transmission having a conventional planetary gear system comprising:
- (a) increasing a number of pinion gears between sun and ring gears of the planetary gear system in order to delay beginning of gear spalling and (b) cutting the pinion gears so as to have pressure angles contributing to operation of the automatic transmission with reduced noise.
A method of modifying an automatic transmission having a conventional planetary gear system comprising:
- (a) increasing a number of pinion gears between sun and ring gears of the planetary gear system in order to delay beginning of gear spalling;
- and (b) inserting a metal sleeve in a housing of a transmission pump in an area of an outer gear.
A method of modifying an automatic transmission having a conventional planetary gear system comprising:
- altering a geometry of an inner pump crescent to create a 0.060″ inner clearance between an inner gear and a leading edge of the inner pump crescent;
- and modifying an oil lubrication circuit to allow a constant flow of oil from a pressure port to a lubrication port.
A modified 180C automatic transmission having a conventional planetary gear system comprising:
- (a) an increased number of pinion gears between sun and ring gears of the planetary gear system in order to delay beginning of gear spalling;
- (b) a metal sleeve in a housing of a transmission pump in an area of an outer gear;
- (c) altered a geometry of an inner pump crescent having a 0.060″ inner clearance between an inner gear and a leading edge of the inner pump crescent;
- and (d) a modified oil lubrication circuit allowing a constant flow of oil from a pressure port to a lubrication port.
Dependencies are inferred from the claim text.