Browse Publications Technical Papers 2004-01-1112
2004-03-08

Toyota's New Shift-by-Wire System for Hybrid Vehicles 2004-01-1112

In today's motorized society, various automotive technologies continue to evolve every day. Amid this trend, a new concept with respect to automatic transaxle gear-shifting has been developed. In order to materialize a new concept for shifting operation with a universal design in mind, a system has been developed: a shift-by-wire system developed specifically for hybrid vehicles.
The greatest advantage of this new system is the lack of constraints associated with the conventional mechanical linkage to the transaxle. This allows freedom of design for the gear selection module. A revolutionary improvement in the ease of shifting has been realized by taking full advantage of this design freedom. In addition, this system contributes to an innovative design. For improved ease of operation, the operation force of the shift lever of this system has been dramatically reduced. For parking, the driver can engage the parking mechanism of the transaxle at the touch of a switch. Furthermore, the shift lever is compactly housed in the instrument panel, harmonizing with the advanced design atmosphere in the cockpit.
This paper outlines the shift-by-wire system and details its major technological development items.

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