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

1987-02-09

1989-04-25

Gruber, Felix D.

Boots, shoes, and leggings

74866, 3644241, G05D 1702, G06F 1550

Patent

active

048253723

ABSTRACT:
In a system for integrally controlling an automatic transmission and an engine, wherein gear stages are automatically switched in accordance with a present shift map and engine torque is changed by a predetermined value by lag angle control to maintain satisfactory the shift characteristics. A change of engine torque is regulated when the frequency of shifts is high. However, the regulation of engine torque change is moderated when the engine is not warmed-up. With this arrangement, temperature in an exhaust system is prevented from becoming abnormally high due to the changes of the engine torque. Furthermore, the engine torque change can be controlled to the maximum when an increase of temperature in the exhaust system does not matter.

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