Title:
自動変速機のエンジンオーバーラン防止装置
Document Type and Number:
Japanese Patent JP4663840
Kind Code:
B2
Abstract:
A controller estimates (calculates) an engine revolution speed of after shifting to a target gear position, based on vehicle speed and a gear ratio of an automatic transmission at the target gear position. Then, the controller changes the target gear position to a higher one when the calculated engine revolution speed is not less than a preset value. The controller changes the target gear position by one or more gears. Since the target gear position is raised, an engine does not overrun upon shifting down. If the target gear position is lower than a current gear position by one gear, and an engine overrun is expected, no shifting down is admitted.
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Inventors:
Nobuyuki Nishimura
Application Number:
JP2000063337A
Publication Date:
April 06, 2011
Filing Date:
March 03, 2000
Export Citation:
Assignee:
Isuzu Motors Limited
International Classes:
F16H61/02; F16H61/16; F16H59/42; F16H59/44; F16H59/70
Domestic Patent References:
| JP6177537A | ||||
| JP1148822A | ||||
| JP61125935A | ||||
| JP8303573A | ||||
| JP926023A |
Attorney, Agent or Firm:
Nobuo Kinutani