This paper describes the development and results of a mathematical model for a single cylinder, naturally-aspirated, direct-injection diesel engine, used to study the effect of compression ratio on the different performance parameters. The parameters investigated include; thermal and mechanical efficiency, ignition delay, mean effective pressure, maximum cylinder pressure, mechanical friction, and blowby. The model simulates a full thermodynamic cycle and considers the intake and exhaust processes, instantaneous heat transfer, instantaneous friction, and instantaneous blowby. Based on the model results, a prediction of an optimum CR for the engine is made.
Compression Ratio Optimization in a Direct-Injection Diesel Engine: A Mathematical Model
Sae Technical Papers
SAE International Congress and Exposition ; 1988
1988-02-01
Conference paper
English
Compression ratio optimization in a direct-injection diesel engine:A mathematical model
Automotive engineering | 1988
|The Development of a Novel Variable Compression Ratio, Direct Injection Diesel Engine
SAE Technical Papers | 1991
|The development of a novel variable compression ratio, direct injection diesel engine
Automotive engineering | 1991
|Effects of Compression Ratio on Combustion Characteristics of a Direct-Injection Diesel Engine
SAE Technical Papers | 1987
|Ignition Delay as Determined in a Variable-Compression Ratio Direct-Injection Diesel Engine
SAE Technical Papers | 1987
|