Apparatus for controlling shifting of vehicle automatic transmis

Details Apparatus for controlling shifting of vehicle automatic transmis Apparatus for controlling shifting of vehicle automatic transmis

1992-05-29

1993-10-05

Wright, Dirk

Machine element or mechanism

Rotary member or shaft indexing, e.g., tool or work turret

Preselected indexed position

F16H 6102

Patent

active

052494845

ABSTRACT:
A shift control apparatus for an automatic transmission of a motor vehicle, including a sensor for detecting a throttle valve opening which regulates an intake air quantity supplied to the vehicle engine, an engine speed sensor for detecting the engine speed, a vehicle speed sensor for detecting the vehicle running speed, a calculating device for calculating the intake air quantity for a steady running of the vehicle, based on the detected throttle valve opening and engine speed, a processing device for processing the calculated intake air quantity to compensate the calculated intake air quantity for a first-order time lag and obtain an estimated intake air quantity, and an automatic shift control device for automatically selecting an optimum operating position of the automatic transmission, based on the estimated intake air quantity and the detected vehicle running speed, according to a predetermined shift control pattern.

REFERENCES:
patent: 4622637 (1986-11-01), Tomita et al.
patent: 4637280 (1987-01-01), Oshiage
patent: 4838125 (1989-06-01), Hamano et al.
patent: 4970916 (1990-11-01), Narita
patent: 5003950 (1991-04-01), Kato et al.

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