Patent
Automatic gear shift controller
Ichiro Kitaori
- 23 Apr 2009
TL;DR: In this article, the authors propose to prevent drivability from being lowered by assuming a shift made from an automatic shiftmode to a manual shift-mode although a shift lever is not operated.
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Abstract: PROBLEM TO BE SOLVED: To prevent drivability from being lowered by assuming a shift made from an automatic shift-mode to a manual shift-mode although a shift lever is not operated. SOLUTION: Over a post-initialization standby period of a T-ECU immediately after an initialization, a post-initialization flag Fdv is on status (NO in a S102). As a shift stage stored in a memory in this period (S122), the T-ECU switches to the automatic shift mode (S124). After the post-initialization standby period (YES in a S104), as long as mode selection is not performed by a shift lever (NO in a S114), automatic shift mode is held, When the mode selection is performed by the shift lever (YES in a S114), then the shift mode can be switched (S116, S106 to S112). Consequently, even if the T-ECU is initialized, the shift stage is not switched to a lower speed side at steps S106 and S108, thereby solving the problems. COPYRIGHT: (C)2009,JPO&INPIT
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