Control system for both engine and automatic transmission
AssigneeToyota Jidosha Kabushiki Kaisha
InventorsMitsuru Takada, Jun Harada
Life of this patent
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Abstract
A control system for controlling both an engine capable of selecting a plurality of output characteristics having different output torques for a throttle opening and dropping a selected output torque temporarily, and an automatic transmission connected to the engine. The control system comprises: a first decider for deciding it on the basis of data inputted that the output characteristics of the engine should be changed; a second decider for deciding it on the basis of input data including a vehicle speed and a throttle opening that a gear change should be performed; and a third decider for deciding, when the second decider decides the performance, the torque-down to be temporarily effected, to a value according to the output characteristics of the engine.
Claims8
A control system for controlling both an engine capable of assuming a plurality of output characteristics having different output torques for a throttle opening and of dropping a selected output torque temporarily, and an automatic transmission connected to said engine, comprising:
- first decide means for deciding on the basis of data inputted thereto, and independently of a gear change in the automatic transmission, that the output characteristics of said engine should be changed;
- second decide means for deciding on the basis of input data thereto, including a vehicle speed and a throttle opening, that a gear change in the automatic transmission should be performed;
- third decide means for deciding, when said second decide means decides that a gear change should be performed, that a torque-down is to be temporarily effected, the torque-down having a value determined according to the output characteristics of said engine decided by the first decide means;
- and
- means for reducing engine torque by said torque-down value.
A control system for controlling both an engine capable of assuming a plurality of output characteristics having different output torques for a throttle opening and of dropping a selected output torque temporarily, and an automatic transmission connected to said engine, comprising:
- first decide means for deciding on the basis of data inputted thereto, and independently of gear change in the automatic transmission, that the output characteristics of said engine should be changed;
- second decide means for deciding on the basis of input data thereto, including a vehicle speed and a throttle opening, that a gear change in the automatic transmission should be performed;
- third decide means for deciding at a shifting time that the output of said engine should be dropped temporarily;
- means for temporarily reducing engine torque in response to said third decide means;
- and
- inhibit means for inhibiting any change in the output characteristics of said engine, when said first decide means decides the change in the output characteristics of said engine and said second decide means decides that a gear change should be performed and when said third decide means decides a temporary reduction of the output torque of said engine.
Dependencies are inferred from the claim text.