Interrelated power delivery controls – including engine control – Transmission control – Transmission controlled by engine
Patent
1998-08-20
1999-08-03
Wright, Dirk
Interrelated power delivery controls, including engine control
Transmission control
Transmission controlled by engine
477120, 477154, 701 65, F16H 6106
Patent
active
059317620
ABSTRACT:
When slipping is generated during the upshifting from a first gear shift stage to a second gear shift stage on ice or the like, a control for prohibiting the upshifting from the second gear shift stage to a third gear shift stage can be carried out precisely. A control system is designed so that when a slipping state is detected on ice having a lower road surface friction coefficient by a slipping state determining device, the upshifting of an automatic transmission from a second gear shift stage to a third gear shift stage is prohibited. In this control system, the time required for the upshifting from a first gear shift stage to the second gear shift stage is measured. If such time is shorter than a first predetermined time, it is determined that a slipping has been generated during the upshifting, and the upshifting from the second gear shift stage to the third gear shift stage is prohibited for a second predetermined time. Thus, even when the determination of the slipping state by the slipping-state determining device is not in time, the further upshifting of the automatic transmission is prohibited. Therefore, it is possible to reliably avoid the carrying-out of undesirable upshifting.
REFERENCES:
patent: 5000281 (1991-03-01), Nobumoto et al.
patent: 5047936 (1991-09-01), Ishii et al.
patent: 5060746 (1991-10-01), Nobumoto et al.
patent: 5265693 (1993-11-01), Rees et al.
patent: 5405301 (1995-04-01), Yagi et al.
patent: 5839083 (1998-11-01), Sugiyama
Furuta Takeo
Godai Shirou
Hirano Masamitsu
Koyama Hideo
Nakauchi Norio
Honda Giken Kogyo Kabushiki Kaisha
Kwon Peter T.
Wright Dirk
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