Patent · US Active

Variable engine valve actuation system having common rail

US7650863B2 · kind B2 · utility

1Cited by

26References

20Claims

0Family size

Assignee

Caterpillar Inc. · US

Inventors

Michael S. Bond · Chillicothe, US
Steven J. Funke · Princeville, US
Michael P. Harmon · Dunlap, US

Key dates

Filing date	Nov 30, 2006
Grant date	Jan 26, 2010
Priority date	—
Expiry date	Dec 9, 2027

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T74/2107
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A valve actuation system for a combustion engine is provided. The valve actuation system may have an engine valve movable between first and second spaced apart end positions. The valve actuation system may also have a first cam element mechanically coupled to move the engine valve, and a first hydraulic slave piston operatively connected to the engine valve to move the engine valve independent of movement of the first cam element. The valve actuation system may further have a high pressure rail fluidly connected to the first hydraulic piston, and a control valve disposed between the high pressure rail and the first hydraulic piston to regulate movement of the engine valve.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.