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US 12,600,451 B2Granted
Marine propulsion system, outboard motor, and marine vessel
AssigneeYamaha Hatsudoki Kabushiki Kaisha
InventorMasahisa Watanabe
Life of this patent
Estimating the term…
Abstract
A marine propulsion system includes an outboard motor including an outboard motor engine, a propulsion generator to be driven by the outboard motor engine, and an electric starter to start the outboard motor engine. The outboard motor is installed on a hull, and an outboard motor capacitor is provided in the outboard motor to supply to the starter power to start the outboard motor engine. The outboard motor capacitor has a higher output per unit volume than a lead storage battery.
Claims20
A marine propulsion system comprising:
- an outboard motor including an outboard motor engine, a propulsion generator to be driven by the outboard motor engine, and an electric starter to start the outboard motor engine, the outboard motor being installed on a hull;
- an outboard motor capacitor provided in the outboard motor to supply to the starter power to start the outboard motor engine, the outboard motor capacitor having a higher output per unit volume than a lead storage battery;
- a hull-side battery provided on the hull and electrically connected to the outboard motor capacitor;
- and
- an outboard motor controller provided in the outboard motor and configured or programmed to control driving of the outboard motor engine;
- wherein
- the hull-side battery is configured to supply to the outboard motor capacitor power to charge the outboard motor capacitor after an operation to start the outboard motor engine and before the engine is started;
- and
- the outboard motor controller is configured or programmed to, in a stepwise manner, reduce a threshold for a voltage value of the outboard motor capacitor to start the outboard motor engine while the outboard motor engine is stopped.
6 more elements
An outboard motor comprising:
- an outboard motor engine;
- a propulsion generator to be driven by the outboard motor engine;
- an electric starter to start the outboard motor engine;
- an outboard motor capacitor to supply to the starter power to start the outboard motor engine, the outboard motor capacitor having a higher output per unit volume than a lead storage battery;
- a hull-side battery provided on the hull and electrically connected to the outboard motor capacitor;
- and
- an outboard motor controller configured or programmed to control driving of the outboard motor engine;
- wherein
- the hull-side battery is configured to supply to the outboard motor capacitor power to charge the outboard motor capacitor after an operation to start the outboard motor engine and before the engine is started;
- and
- the outboard motor controller is configured or programmed to, in a stepwise manner, reduce a threshold for a voltage value of the outboard motor capacitor to start the outboard motor engine while the outboard motor engine is stopped.
8 more elements
A marine vessel comprising:
- a hull;
- an outboard motor including an outboard motor engine, a propulsion generator to be driven by the outboard motor engine, and an electric starter to start the outboard motor engine, the outboard motor being installed on the hull;
- an outboard motor capacitor provided in the outboard motor to supply to the starter power to start the outboard motor engine, the outboard motor capacitor having a higher output per unit volume than a lead storage battery;
- a hull-side battery provided on the hull and electrically connected to the outboard motor capacitor;
- and
- an outboard motor controller configured or programmed to control driving of the outboard motor engine;
- wherein
- the hull-side battery is configured to supply to the outboard motor capacitor power to charge the outboard motor capacitor after an operation to start the outboard motor engine and before the engine is started;
- and
- the outboard motor controller is configured or programmed to, in a stepwise manner, reduce a threshold for a voltage value of the outboard motor capacitor to start the outboard motor engine while the outboard motor engine is stopped.
7 more elements
Dependencies are inferred from the claim text.