Internal combustion engine with camshaft valve phase variation device

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 11939891
APP PUB NO 20220298932A1
SERIAL NO

17641727

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A combustion engine for a vehicle includes a first centrifugal device for varying timing of a first plurality of suction or relief valves with respect to the drive shaft. A driving disc is mounted idle on a first camshaft which controls the valves, and at least one driven disc is integral with the camshaft. Drive elements for transmitting motion from the driving disc to the driven disc are interposed between the two discs causing a relative rotation of the driven disc with respect to the driving disc when the rotation speed of the discs exceeds a predetermined threshold. A distribution system connects the drive shaft with the driving disc so as to cause the rotation thereof. A second gear meshes with a first gear so that rotation of the driving disc mounted on the first camshaft causes the rotation of the second camshaft to control other valves of the engine.

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Patent Owner(s)

Patent OwnerAddress
PIAGGIO & C S P A56025 PONTEDERA PISA

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Mariotti, Walter Pontedara, IT 25 53

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