Control device for vehicle

摘要

The control device comprises an upshifting prohibiting portion for prohibiting the upshifting of the plurality of speed change stages, an engine rotation speed maintaining portion for maintaining an engine rotation speed to a predetermined rotation speed, an engine maximum torque value recording portion for recording a maximum torque value of the engine and an upshifting prohibition releasing portion for releasing an upshifting prohibition by the upshifting prohibiting portion when a differential torque value which is a difference between the maximum torque value of the engine recorded by the engine maximum torque value recording portion and a current engine torque value is greater than a predetermined torque value when the upshifting of the plurality of speed change stages is prohibited by the upshifting prohibiting portion.

主权项

1. A control device for a vehicle comprising an engine operated by combustion of fuel, an automatic transmission having a plurality of speed change stages for outputting an output rotation of the engine to an output shaft by changing a rotation speed thereof with a plurality of gear ratios, whereby an upshifting or a downshifting of the plurality of speed change stages is performed to increase or decrease an output rotation speed of the output shaft when one of the speed change stages is shifted to another of the speed change stages and an accelerator pedal for adjusting the output rotation of the engine, the control device comprising:
an upshifting prohibiting portion for prohibiting the upshifting of the plurality of speed change stages when an opening degree of the accelerator pedal is equal to or more than a first predetermined value and an engine rotation acceleration speed is less than a second predetermined value; an engine rotation speed maintaining portion for maintaining an engine rotation speed to a predetermined engine rotation speed when the upshifting of the plurality of speed change stages is prohibited by the upshifting prohibition portion: an engine maximum torque value recording portion for recording a maximum torque value of the engine when the upshifting of the plurality of speed change stages is prohibited by the upshifting prohibition portion; and an upshifting prohibition releasing portion for releasing an upshifting prohibition by the upshifting prohibiting portion when a differential torque value which is a difference between the maximum torque value of the engine recorded by the engine maximum torque value recording portion and a current engine torque value is greater than a predetermined torque value when the upshifting of the plurality of speed change stages is prohibited by the upshifting prohibiting portion.