US 7,320,307 B2
Manifold pressure control for a variable event valvetrain
Nate R. Trask, Dearborn, Mich. (US); and Thomas W. Megli, Dearborn, Mich. (US)
Assigned to Ford Global Technologies, LLC, Dearborn, Mich. (US)
Filed on Sep. 12, 2005, as Appl. No. 11/224,464.
Prior Publication US 2007/0056560 A1, Mar. 15, 2007
Int. Cl. F02M 7/00 (2006.01); F02B 75/02 (2006.01); F02D 11/10 (2006.01); F01L 1/34 (2006.01)
U.S. Cl. 123—435  [123/316; 123/90.15] 19 Claims
OG exemplary drawing
 
1. A method to control intake manifold pressure for an internal combustion engine having a variable event valvetrain, the method comprising:
controlling engine scavenging flow from an intake manifold to an exhaust manifold by adjusting timing of at least one intake valve in response to a change in engine speed.