Personal watercraft having a hybrid power source

Details Personal watercraft having a hybrid power source Personal watercraft having a hybrid power source

2005-02-22

2005-02-22

Avila, Stephen (Department: 3617)

Marine propulsion

Electric drive for propelling means

C440S084000

Reexamination Certificate

active

06857918

ABSTRACT:
A hybrid fuel/electric powered watercraft includes an electronic turning machine (ETM), and internal combustion engine, and a propulsion system, which are operatively connected to each other, preferably via one or more clutches. An electronic control unit (ECU) controls the ETM, clutch(es), and engine. At low speeds, the ECU disengages at least one clutch and solely uses the ETM to power the propulsion unit and propel the watercraft. At high speeds, the ECU engages the clutch and uses both the engine and the ETM or just the engine to power the propulsion system. When the watercraft's battery discharges, the ECU operates the ETM in a generator mode and runs the engine to charge the battery. The watercraft can also include a shore button feature that selectively limits/governs the speed of the watercraft. A clutch may be used to avoid driving the propulsion system when the engine is idling or being started.

REFERENCES:
patent: 5083948 (1992-01-01), Grobson
patent: 6098735 (2000-08-01), Sadarangani et al.
patent: 20020153745 (2002-10-01), Messano
Popular Science article entitled “High Bred Hybrids,” Mar., 2001, pp. 77-79.
Aei Articled entitled “Siemens Starter/Generator for 2002,” Jan. 2001, p. 56.
Siemens Press Release entitled “Siemens Integrated Starter Generator Stands Ready to Meet SUV Makers Aggressive Fuel Economy Targets,” Oct. 15, 2000.

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