Engine for personal watercraft and crankshaft thereof
AssigneeKawasaki Jukogyo Kabushiki Kaisha
InventorsYoshimoto Matsuda, Yoshinobu Tanaka
Life of this patent
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Abstract
Disclosed is an engine of a personal watercraft having a water jet pump at a rear end thereof, in which a center of gravity of the engine is located rearward for improvement of planing capability of the watercraft. The engine comprises: a crankcase having a front end wall and a rear end wall; a crankshaft provided inside the crankcase; a generator provided at an output end portion of the crankshaft, the generator including a rotor fixed to the crankshaft; a starter motor provided on an output end side of the crankshaft outside the crankcase; and a clutch provided between the starter motor and the rotor of the generator, for connecting/disconnecting the starter motor to/from the rotor.
Claims14
An engine of a personal watercraft having a water jet pump at a rear end thereof, comprising:
- a crankcase having a front end wall and a rear end wall;
- a crankshaft provided inside the crankcase;
- a generator provided at an output end portion of the crankshaft, the generator including a rotor fixed to the crankshaft;
- a starter motor provided on an output end side of the crankshaft outside the crankcase;
- and
- a clutch provided between the starter motor and the rotor of the generator, for connecting/disconnecting the starter motor to/from the rotor.
A crankshaft of an engine for a personal watercraft, comprising:
- a crankshaft body;
- a first extended shaft member connected to one end portion of the crankshaft body so as to be rotatable integrally with and separable from the crankshaft body;
- and
- a rotor-mounting portion provided at an end portion of the crankshaft on the first extended shaft member side, for mounting a rotor of a generator of the engine, wherein
- the first extended shaft member constitutes an output end part of the engine.
An engine of a personal watercraft comprising:
- a crankcase having a front end wall and a rear end wall;
- a crankshaft provided inside the crankcase;
- a generator provided at an output end portion of the crankshaft, the generator including a rotor fixed to the crankshaft;
- a starter motor provided on an output end side of the crankshaft outside the crankcase, the generator including a rotor fixed to the crankshaft;
- a clutch provided between the starter motor and the rotor of the generator, for connecting/disconnecting the starter motor to/from the generator, the crankshaft including:
- a crankshaft body;
- a first extended shaft member connected to an end portion of the crankshaft body so as to be rotatable integrally with and separable from the crankshaft body;
- and
- a rotor-mounting portion provided at an end portion of the crankshaft on the first extended shaft member side, for mounting the rotor of the generator, wherein
- the first extended shaft member constitutes an output end part of the engine.
Dependencies are inferred from the claim text.