Data processing: vehicles – navigation – and relative location – Vehicle control – guidance – operation – or indication – With indicator or control of power plant
Reexamination Certificate
2007-08-21
2007-08-21
Wolfe, Willis R. (Department: 3747)
Data processing: vehicles, navigation, and relative location
Vehicle control, guidance, operation, or indication
With indicator or control of power plant
C701S108000
Reexamination Certificate
active
10734555
ABSTRACT:
A system and method are described for reducing engine vibration during cylinder deactivation in selected operating conditions. The method utilizes open valve deactivation to better match the cylinder pressure of deactivated cylinders to combusting cylinders. This mode is utilized, along with cylinder closed valve cylinder deactivation, to improve overall fuel economy, while at the same time reducing vibration felt by the vehicle driver.
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Megli Thomas W.
Trask Nate
Alleman Hall McCoy Russell & Tuttle LLP
Ford Global Technologies LLC
Hoang Johnny H.
Lippa Allan J.
Wolfe Willis R.
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