Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Toyoji Yagi0
Steven Richard Kipping0
Date of Patent
June 28, 2011
Patent Application Number
11898847
Date Filed
September 17, 2007
Patent Primary Examiner
Patent abstract
Engine load for a supercharged engine is estimated by determining airflow upstream of a throttle valve that is upstream of a supercharger, subtracting a value representative of a change in air mass between the throttle valve and the supercharger based on a measured change in pressure between the throttle valve and the supercharger, and subtracting a modification value dependent upon a current engine speed and a signal representative of a pressure at the intake manifold.
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