Method for directing an up-shift operation for a vehicle having

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Details

731173, 340 52F, B60K 4108, G09B 1916, G07C 508

Patent

active

047528834

ABSTRACT:
A method for directing an up shift operation for a vehicle having an engine and a manual transmission generates a direction of an up-shift operation when the vehicle speed exceeds a reference speed determined for each gear position. The reference speed of a medium speed gear is varied according to the degree of acceleration at the time of the previous up-shift operation. If the up-shift operation from a low speed gear to the medium speed gear is effected while the vehicle is not accelerating rapidly, the reference speed for an up shift operation from the medium speed gear is lowered. Further, if a cruising state of the vehicle with the medium speed gear after the acceleration is continued for more than a predetermined time period, the reference speed for an up-shift operation from the medium speed gear is also lowered.

REFERENCES:
patent: 4463427 (1984-07-01), Bonnetain et al.
patent: 4490790 (1984-12-01), Shinoda
patent: 4492112 (1985-01-01), Igarashi et al.
patent: 4539868 (1985-09-01), Habu
patent: 4550596 (1985-11-01), Ueda
patent: 4559599 (1985-12-01), Habu et al.
patent: 4622637 (1986-11-01), Tomita et al.

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