Evaluation of a One-Zone Burn-Rate Analysis Procedure Using Production SI Engine Pressure Data Massachusetts Institute of Technology

Format:

Conference/Event

Author/Creator:

Cheung, Hon M., author.

Conference Name:

International Fuels and Lubricants Meeting and Exposition (1993-10-18 : Philadelphia, Pennsylvania, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1993

Summary:

A single-zone burn-rate analysis based on measured cylinder pressure data proposed by Gatowski and others in 1984 was evaluated over the full load and speed range of a spark-ignition engine. The analysis, which determines the fuel mass burning rate based on the First Law of Thermodynamics, includes sub-models for the effects of residual fraction, heat transfer, and crevices. Each of these sub-models was assessed and calibrated. Cylinder pressure data over the full engine operating range obtained from two different engines were used to examine the robustness of the analysis. The sensitivity of predictions to the parameters wall temperature, heat transfer model coefficients and exponent, swirl ratio, motoring polytropic constant, in-cylinder mass, and to uncertainty in pressure data was evaluated. These tests showed the analysis to be relatively insensitive to sub-model parameters, and much more sensitive to errors in experimental inputs such as the initial mass and the cylinder pressure measurements

Notes:

Vendor supplied data

Publisher Number:

932749

Access Restriction:

Restricted for use by site license