To provide a control system, a control method, and a control program for shift-stage switching which enables pros and cons of a shift-stage switching for fuel-economical operation to be judged in a short time, and amount of information which must be stored to be reduced.
By the shift-stage switching control-system, a shift-stage and speed in vehicle-running, engine speed, and a degree of accelerator travel are detected. On the basis of detected degree of the accelerator and engine speed, a load factor in the running is computed. On the basis of a gear ratio in response to shift-stage one-stage higher than the shift-stage in the running, a frequency distribution table, detected speed, and a computed load factor, it is determined whether in the case where the shift-stage-switching one-stage higher than the shift-stage in vehicle running is done, the speed and the load factor can be maintained or not. On the basis of the above determination, whether the one-stage higher upshifting in the running is possible or not is determined.
TAKEI TAKASUMI
OISHI HIROYUKI
| JPS59200849A | 1984-11-14 | |||
| JPS63101549A | 1988-05-06 | |||
| JP2000104813A | 2000-04-11 | |||
| JPH0727211A | 1995-01-27 | |||
| JPS5932523A | 1984-02-22 | |||
| JPH11325227A | 1999-11-26 | |||
| JPH02267030A | 1990-10-31 |
Sadao Matsumura
Fumio Takino
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