Electronic method and apparatus for controlling an automatic tra

Details Electronic method and apparatus for controlling an automatic tra Electronic method and apparatus for controlling an automatic tra

1981-11-20

1984-10-02

Herrmann, Allan D.

Machine element or mechanism

Rotary driven device adjustable during operation relative to...

Screw and nut adjusting means

74859, 74865, 74866, B60K 4118

Patent

active

044740816

ABSTRACT:
In an altimetric compensation apparatus and method for a speed change pattern of an automatic transmission, first to third memory locations corresponding respectively to idling, low load and highload conditions of an engine are provided. A feedback air fuel ratio is calculated on the basis of feedback signals from an air fuel ratio sensor. A value in the memory corresponding to the detected running condition of the engine is compensated on the basis of deviation of the feedback air fuel ratio from the base air fuel ratio. When the values in at least two memory locations deviate by at least a predetermined value from the base value, the altimetric compensation value is adjusted and the speed change pattern is altered on the basis of the altimetric compensation value thus obtained.

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patent: 4257381 (1981-03-01), Yuzawa et al.
patent: 4289100 (1981-09-01), Kinngawa et al.
patent: 4346625 (1982-08-01), Latsch et al.

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