Machine element or mechanism – Rotary member or shaft indexing – e.g. – tool or work turret – Preselected indexed position
Patent
1993-02-11
1994-04-12
Wright, Dirk
Machine element or mechanism
Rotary member or shaft indexing, e.g., tool or work turret
Preselected indexed position
F16H 6108
Patent
active
053015720
ABSTRACT:
A shift control method for an automatic transmission of an automotive vehicle comprises a preliminary stage which is executed for eliminating the play in mechanism of a low/reverse brake of the automatic transmission at a shifting, particularly at a shifting of the transmission from the neutral position to a running position when the vehicle is at rest, and an engagement stage which is executed subsequently to the preliminary stage for operating the brake substantially. In the preliminary and engagement stages, the fluid pressure supplied to the brake is controlled in accordance with the precontrol pattern and the main control pattern, respectively. The shift control method further comprises a step of correcting a factor defining the precontrol pattern such that the time required from the start of the engagement stage to the start of a substantial shifting of the automatic transmission coincides with an ideal reference time, and a step of correcting the initial value of the fluid pressure supplied to the engaging element at the start of the main control pattern such that the rate of change in the rotational speed of the input shaft of the transmission during the period from the start of the substantial shifting to the end of same coincides with an ideal reference rate.
REFERENCES:
patent: 4732246 (1988-03-01), Tateno et al.
patent: 4775938 (1988-10-01), Hiramatsu
patent: 4793216 (1988-12-01), Hiramatsu et al.
patent: 4800497 (1989-01-01), Koori et al.
patent: 4846021 (1989-06-01), Hamano et al.
patent: 4969098 (1990-11-01), Leising et al.
Hatta Katsuhiro
Nakajima Yasuhiro
Naruse Toshitaka
Tanaka Yuichi
Mitsubishi Jidosha Kogyo Kabushiki Kaisha
Wright Dirk
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