System for integrally controlling automatic transmission and engine
AssigneeToyota Jidosha Kabushiki Kaisha
InventorsHideki Yasue, Kagenori Fukumura, Kunihiro Iwatsuki, Yoshio Shindo
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Abstract
A system for integrally controlling an automatic transmission and an engine, wherein gear stages are automatically switched in accordance with a preset shift map, and an engine torque is changed by a predetermined change value during shifting to thereby maintain the satisfactory shift characteristics. The system includes a device for determining whether or not an engine torque change can be actually carried out without a problem; and means for regulating said engine torque change when said engine torque change cannot be actually carried out, to thereby prevent the problem from occurring.
Claims21
A system for integrally controlling an automatic transmission and an engine, wherein gear stages are automatically switched in accordance with shift points in a preset shift map, and an engine torque is changed by a predetermined change value during shifting to thereby maintain satisfactory shift characteristics, comprising:
- processor means for controlling the engine torque change by the predetermined change value during shifting, the processor means including
- means for determining whether conditions exist such that said engine torque cannot be changed in accordance with said predetermined change value;
- and
- means for regulating said engine torque change when said conditions are determined to exist, said regulating means including means for changing the shift points of said preset shift map to lower the shift points when the engine torque change is regulated.
Dependencies are inferred from the claim text.