Machine element or mechanism – Rotary member or shaft indexing – e.g. – tool or work turret – Preselected indexed position
Patent
1989-02-06
1991-01-08
Wright, Dirk
Machine element or mechanism
Rotary member or shaft indexing, e.g., tool or work turret
Preselected indexed position
B60K 4118
Patent
active
049826212
ABSTRACT:
The magnitude of line pressure used for activating a friction device to be engaged during a shift is controlled based upon data stored in a RAM of a microcomputer based control unit. The data is updated based on the result of evaluation of a shift which has taken place and the magnitude of line pressure is controlled based on this updated data at a future or subsequent time of occurrence of a shift of the same kind. This learning control to update this data stored in the RAM is effected using an inertia phase time measured as criteria which the judgement of the quality of a shift is based on. The total length of time for a shift is measured and when the total length of time is greater than a predetermined value, the data in the RAM is modulated to cause a prompt substantial increase in the magnitude of line pressure, so that the line pressure will be increased at the subsequent future time of the occurrence of a shift of the same kind.
REFERENCES:
patent: 4021712 (1977-05-01), Ishihara et al.
patent: 4283970 (1981-08-01), Vukovich
patent: 4653350 (1987-03-01), Downs et al.
patent: 4653351 (1987-03-01), Downs et al.
patent: 4671139 (1987-06-01), Downs et al.
patent: 4674364 (1987-06-01), Shindo et al.
patent: 4680992 (1987-07-01), Hayasaki et al.
patent: 4685356 (1987-08-01), Iwatsuki
patent: 4706522 (1987-11-01), Nitz
patent: 4707789 (1987-11-01), Downs et al.
patent: 4718310 (1988-01-01), Shindo et al.
patent: 4722247 (1988-02-01), Shindo et al.
patent: 4742461 (1988-05-01), Eschrich et al.
patent: 4781080 (1988-11-01), Iwatsuki et al.
patent: 4791568 (1988-12-01), Hiramatsu et al.
patent: 4811223 (1989-03-01), Iwatsuki et al.
patent: 4843922 (1989-07-01), Kashihara
patent: 4846021 (1989-07-01), Hamano et al.
"Service Manual for Automatic Transmission of the RE4R01A Type", (A261C07), published in Mar. 1987 by Nissan Motor Company, Limited.
Nissan Motor Company Limited
Wright Dirk
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