Patent ID: 7552588
Filing Date: 2009-06-30
Classification: F02B,F02D,Y02T

Abstract:
1. A system, comprising: an internal combustion engine having a combustion chamber with a piston located therein; an intake passage coupled to the combustion chamber, wherein the intake passage supplies intake air to the combustion chamber; an adjustable compressor arranged in the intake passage upstream of the combustion chamber; a throttle arranged in the intake passage upstream of the compressor; and a controller configured to operate the engine so that, at least under some conditions, the piston compresses a homogeneous air and fuel mixture within the combustion chamber to attain substantial auto-ignition of the mixture; and to increase a boosting of the compressor to increase heating of the intake air, and to decrease the boosting to decrease heating of the intake air, while throttling the intake air with the throttle; wherein said controller adjusts said throttling and boosting in response to auto-ignition timing and wherein the controller is further configured to adjust a throttle position and a compressor condition so that a decrease of temperature of the intake air across the throttle is less than an increase of temperature of the intake air across the compressor.