Automatic transmission control apparatus, having means for deter

Details Automatic transmission control apparatus, having means for deter Automatic transmission control apparatus, having means for deter

1989-09-08

1991-09-10

Gruber, Felix D.

Boots, shoes, and leggings

74866, B60K 4110, B60K 4118, G06F 1520

Patent

active

050479350

ABSTRACT:
An apparatus for controlling an automatic transmission of a motor vehicle, which has a first and a second transmission mechanism, and a testing device for testing for a shifting operation which requires shifting actions of both of the first and second transmission mechanisms. The apparatus further has a determining device for determining, based on a rotary member of the second transmission mechanism, that the shifting action of the second shifting mechanism is completed. The determining device determines that the shifting operation of the transmission is completed, at the time when a predetermined time interval has passed after the detemination that the shifting action of the second shifting mechanism is comleted. The point of time at which the completion of the shifting operation is determined may be utilized for various purposes for controlling the transmission.

REFERENCES:
patent: 4688450 (1987-08-01), Hayashi et al.
patent: 4690017 (1987-09-01), Taniguchi et al.
patent: 4727772 (1988-03-01), Sumiya et al.
patent: 4727773 (1988-03-01), Sumiya et al.
patent: 4781080 (1988-11-01), Iwatsuki
patent: 4783743 (1988-11-01), Yashiki et al.
patent: 4967355 (1990-10-01), Iwatsuki et al.
SAE Technical Paper Series No. 840448, Electronic Control of a 4-Speed Automatic Transmission with Lock-Up Clutch, Manfred Schwab et al, Feb. 27-Mar. 2, 1984.

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