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US 6,087,735 AGranted
Power circuit for marine engine
AssigneeSanshin Kogyo Kabushiki Kaisha
InventorKazuhiro Nakamura
Life of this patent
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AssigneeSanshin Kogyo Kabushiki Kaisha
InventorKazuhiro Nakamura
Estimating the term…
One embodiment of an engine has an electrical system generally comprising a charge circuit and an ignition circuit. A primary power supply circuit connects the charge circuit and the ignition circuit through a non-contact switch circuit. The non-contact switch is adapted to connect the primary power supply circuit to the ignition circuit when the engine is started. A secondary power supply circuit is coupled to at least one electrical component and to the ignition circuit. The secondary power supply circuit has a main switch and a fuse arranged upstream of the main switch. Upon closing the main switch, the engine is started and the primary power supply circuit and the associated non-contact switch are closed. Another embodiment of the engine has an electrical system which adds control of a fuel injector circuit. The fuel injector circuit is in electrical communication with the ignition circuit and a switching circuit which controls the ignition circuit and the fuel injector circuit.
An electrical system for an engine comprising a charge circuit and an ignition circuit, a primary power circuit connecting the charge circuit and the ignition circuit, a non-contact switch being positioned along the primary power circuit such that the non-contact switch selectively connects the charge circuit to the ignition circuit after starting of the engine.
An electrical system for an engine comprising a power source, a direct power supply circuit and a fused power supply circuit, the power source emitting a substantially constant voltage, the direct power supply circuit directly connecting the power source and an ignition system, a non-contact switch being interposed along the direct power supply circuit between the power source and the ignition system, the fused power supply circuit electrically coupling the power source through a fuse to at least one electrical component and to the ignition system.
A watercraft comprising a hull and an external motor attached to the hull, the watercraft also having an electrical system, the electrical system having a first portion and a second portion, the first portion of the electrical system disposed within the hull and comprising a battery and an auxiliary circuit comprising a main switch and at least one electrical component, the second portion of the electrical circuit disposed within the motor and comprising a charging circuit, a primary circuit and an ignition control circuit wherein the charging circuit is connected by the primary circuit to the ignition control circuit with a non-mechanical switch arranged along the primary circuit.
Dependencies are inferred from the claim text.