Search Results

The use of 0D/1D simulation to model complex engine systems is developing, since both quick and accurate simulators are needed, in particular for engine control design applications. In the case of Diesel engines, the engine models must be able to deal with new combustion modes like Homogeneous Charge Compression Ignition (HCCI), while remaining efficient for conventional operating conditions. The increasing complexity and requirements lead to the introduction of multiple new parameters of the 0D/1D models : it appears very interesting to develop automatic calibration of these parameters, in order to save development time and also to enhance the quality of use of the models. We present a phenomenological dual mode (HCCI and conventional) Diesel combustion model. We then describe the automatic calibration tool we developed to enhance our simulation efficiency.

The purpose of the European « SPACE LIGHT » (Whole SPACE combustion for LIGHT duty diesel vehicles) 3-year project launched in 2001 is to research and develop an innovative Homogeneous internal mixture Charged Compression Ignition (HCCI) for passenger cars diesel engine where the combustion process can take place simultaneously in the whole SPACE of the combustion chamber while providing almost no NOx and particulates emissions. This paper presents the whole project with the main R&D tasks necessary to comply with the industrial and technical objectives of the project. The research approach adopted is briefly described. It is then followed by a detailed description of the most recent progress achieved during the tasks recently undertaken. The methodology adopted starts from the research study of the in-cylinder combustion specifications necessary to achieve HCCI combustion from experimental single cylinder engines testing in premixed charged conditions.