| US 7,549,409 B2 | ||
| Fuel supply amount control system and boat propulsion unit | ||
| Takaaki Bamba, Shizuoka (Japan) | ||
| Assigned to Yamaha Hatsudoki Kabushiki Kaisha, Shizuoka (Japan) | ||
| Filed on Apr. 22, 2008, as Appl. No. 12/107,176. | ||
| Claims priority of application No. 2007-112848 (JP), filed on Apr. 23, 2007. | ||
| Prior Publication US 2008/0262702 A1, Oct. 23, 2008 | ||
| Int. Cl. F02D 41/30 (2006.01) | ||
| U.S. Cl. 123—491 [701/103; 440/84] | 7 Claims |
| 1. A fuel supply amount control system for controlling a fuel supply amount during engine startup, comprising:
a fuel control device arranged to control the fuel supply amount independently during the engine startup before and after
a cylinder stroke determination; wherein
the engine startup corresponds to a time when a crankshaft starts to rotate to a time when the crankshaft stably rotates by
fuel combustion; and
the cylinder stroke determination corresponds to a time when the stroke of a cylinder is determined to be one of an intake,
compression, expansion, or exhaust stroke.
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