| US 7,530,863 B2 | ||
| Electronic remote control system of a propulsion system for a watercraft and a watercraft | ||
| Makoto Ito, Shizuoka-ken (Japan); and Takashi Yamada, Shizuoka-ken (Japan) | ||
| Assigned to Yamaha Hatsudoki Kabushiki Kaisha, Shizuoka-ken (Japan) | ||
| Filed on Mar. 30, 2007, as Appl. No. 11/694,609. | ||
| Claims priority of application No. 2006-140538 (JP), filed on May 19, 2006. | ||
| Prior Publication US 2008/0026653 A1, Jan. 31, 2008 | ||
| Int. Cl. B63H 21/22 (2006.01) | ||
| U.S. Cl. 440—1 [440/86] | 16 Claims |
| 1. An electronic remote control system of an internal combustion engine for a watercraft including an engine electronic control
unit for controlling an operating state of the engine and a remote controller having a control lever capable of transmitting
a control signal to the engine electronic control unit to achieve a target operating state, the system comprising:
an operating state determination subsystem that is capable of determining whether the engine is in an operating state;
a shift actuator capable of driving a shifting component according to a target shift position set with the control lever;
a shift position detector for detecting whether the shifting component is in neutral; and
a lever position detector for detecting whether the control lever is in a neutral position, and
wherein the shift actuator drives the shifting component to neutral when a main switch that was previously switched on is
switched off while the control lever is in a position other than the neutral position and wherein the shift actuator maintains
the shifting component in neutral when an engine rotational speed is lower than a predefined rotational speed after the main
switch that was previously switched on is switched off while the control lever is in a position other than the neutral position.
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