| US 7,549,351 B2 | ||
| Shift control system, shift control method and shift switching device | ||
| Sumiko Amamiya, Okazaki (Japan); Tatsuya Ozeki, Torrance, Calif. (US); Shigeru Kamio, Nagoya (Japan); Yasuhiro Nakai, Kariya (Japan); Taku Itoh, Chita-gun (Japan); Kazuo Kawaguchi, Kasugai (Japan); and Yasuo Shimizu, Toki (Japan) | ||
| Assigned to Toyota Jidosha Kabushiki Kaisha, Toyota-shi (Japan) | ||
| Filed on Mar. 19, 2008, as Appl. No. 12/50,992. | ||
| Application 12/050992 is a division of application No. 10/552075, granted, now 7,370,547, filed on May 13, 2008, previously published as PCT/JP2004/004571, filed on Mar. 30, 2004. | ||
| Claims priority of application No. 2003-101980 (JP), filed on Apr. 04, 2003; and application No. 2003-301547 (JP), filed on Aug. 26, 2003. | ||
| Prior Publication US 2008/0168853 A1, Jul. 17, 2008 | ||
| Int. Cl. F16H 59/02 (2006.01) | ||
| U.S. Cl. 74—335 | 26 Claims |
| 1. A shift range switching device of an automatic transmission mounted on a vehicle, comprising:
shift means for switching a shift position to one of a plurality of successive shift positions by rotating an actuator;
storage means for storing said one of shift positions resulting from switching by said shift means;
first restriction means for restricting, in a first shift position corresponding to one end position among said plurality
of successive shift positions, rotation of said actuator in a direction where no adjacent shift position is present; and
control means for controlling rotation of said actuator,
said control means including
first position setting means for setting, as a first reference position in said first shift position, a position where the
rotation of said actuator is stopped by said first restriction means,
electric power supply control means for permitting shut-off of electric power supply to said shift range switching device
for said first shift position, and
reference position re-setting means for setting again said first reference position by said first position setting means,
when electric power supply is resumed after said shut-off of electric power supply, on the condition that said shift position
stored in said storage means is unknown.
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