Browse Publications Technical Papers 2000-05-0042
2000-06-12

Engine control using a combustion model 2000-05-0042

The combination of physical models of an advanced engine control system was proposed to obtain sophisticated combustion control in ultra-lean combustion, including homogeneous compression-ignition and activated radical combustion with a light load and in stoichiometric mixture combustion with a full load. Physical models of intake, combustion and engine thermodynamics were incorporated, in which the effects of residual gas from prior cycles on intake air mass and combustion were taken into consideration. The combined control of compression ignition at a light load and spark ignition at full load for a high compression ratio engine was investigated using simulations. The control strategies of the variable valve timing and the intake pressure were clarified to keep autoignition at a light load and prevent knock at a full load.

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