Homogeneous charge compression ignition of LPG and gasoline using variable valve timing in an engine

Mixture Preparation Mechanisms in a Port Fuel Injected Engine

Determination of Residual Gas Fraction in IC Engines

A Model for On-Line Monitoring of In-Cylinder Residual Gas Fraction (RGF) and Mass Flowrate in Gasoline Engines

This paper addresses the longstanding problems of residual gas measurement during engine dynamometer testing, and of real-time residual modeling for engine control applications. A new method is described which is simple to apply, requiring only currently standard calibration test cell instrumentation. Experimental validation against measurements using direct in-cylinder CO2 sampling is presented, and a comprehensive error sensitivity analysis is included. A real-time capable, controls-oriented model is also described. Its accuracy is assessed by comparison to engine-simulation-generated residual values after using these values to determine the model parameters.

S. Couet

Papers

A Model for Residual Gas Fraction Prediction in Spark Ignition Engines