Back to results
US 2009/0024296 A1Published application
System and method for estimating volumetric efficiency for engines with intake and exhaust cam phasers
AssigneeGM Global Technology Operations LLC
InventorsLayne K. Wiggins, Kenneth P. Dudek, Jason Meyer, Yann G. Guezennec
Life of this patent
Estimating the term…
Abstract
An engine control module comprises a table that outputs a parked VE estimate based on an input parameter when intake and exhaust cam phasers of an engine are in a parked position. A calculation module calculates VE estimate when the intake and exhaust cam phasers are not in a parked position based on the parked VE estimate and a mathematical relationship.
Claims20
An engine control module comprising:
- a table that generates a parked VE estimate based on engine speed and load when intake and exhaust cam phasers of an engine are in a parked position;
- and
- a calculation module that calculates a VE estimate using a mathematical relationship based on said parked VE estimate and said engine speed and load when said intake and exhaust cam phasers are not in a parked position.
A method comprising:
- providing a table that outputs a parked VE estimate based on engine speed and load when intake and exhaust cam phasers of an engine are in a parked position;
- and
- calculating a VE estimate using a mathematical relationship based on said parked VE estimate and said engine speed and load when said intake and exhaust cam phasers are not in a parked position and.
Dependencies are inferred from the claim text.