Simplified Combustion Pressure and NOx Prediction Model for DI Diesel Engine The Automotive Research Association of India (ARAI)

Format:

Conference/Event

Author/Creator:

Walke, Walke, author.

Contributor:

Marathe, N. V.

Nandgaonkar, M. R.

Conference Name:

Symposium on International Automotive Technology 2013 (2013-01-09 : Pune, India)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Pune, MH The Automotive Research Association of India 2013

Summary:

This paper is focused on the prediction of in-cylinder pressure, temperatures and engine-out NOx. One of the important factors influencing engine output parameters is the rate of heat release, which affects the in-cylinder pressure, temperature and engine out emissions. A single-zone model is formulated for prediction of heat release and in-cylinder pressure. Being a predictive model, this model does not required cylinder pressure as an input. Combustion pressure is predicted by modeling compression pressure, ignition delay, heat release, and heat loss. Required Sub-models have been obtained from the literatures. Fuel burning rate is predicted using Watson model. To retain the computational efficiency and better prediction accuracy a two-zone model has been formulated to predict NOx emissions. Flame temperatures are predicted by enthalpy balance. Thermal NO concentration is predicted by using basic Zeldovich mechanism. Both these models have been validated on a Turbocharged DI Diesel engine, at various speed-load conditions. The predicted results of the in-cylinder pressure histories as well as the nitric oxide emissions are in good agreement with the test data

Notes:

Vendor supplied data

Publisher Number:

2013-26-0131

Access Restriction:

Restricted for use by site license