System for integrally controlling automatic transmission and eng

Details System for integrally controlling automatic transmission and eng System for integrally controlling automatic transmission and eng

1987-06-22

1989-06-13

Scherbel, David A.

Machine element or mechanism

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

Preselected indexed position

74857, B60K 4108

Patent

active

048381241

ABSTRACT:
In a system for integrally controlling an automatic transmission and an engine wherein engine torque is changed during shifting, it is detected whether or not various communication means provided for carrying out the engine torque change is in a failed state. If so, a shift parameter or parameters in the automatic transmission, such as a shift point and engagement oil pressure, are changed in a direction for securing the durability of frictionally engaging devices. When the shift point is changed, a measured value of factors for determining the shift point is corrected to substantially lower the shift point. With this arrangement, computer capacity can be decreased.

REFERENCES:
patent: 4208929 (1980-06-01), Heino et al.
patent: 4266447 (1981-05-01), Heess et al.
patent: 4370903 (1983-02-01), Stroh et al.
patent: 4403527 (1983-09-01), Hohl et al.
patent: 4506564 (1985-03-01), Coutant
patent: 4543934 (1985-10-01), Morita et al.
patent: 4635508 (1987-01-01), Tatsumi
patent: 4716788 (1988-01-01), Kita

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