Study of autoignition in a premixed charge, internal combustion engine using comprehensive chemical kinetics: experiments and predictions

Thesis/Dissertation · Tue Jan 01 04:00:00 EST 1985

OSTI ID:6347452

Dimpelfeld, P M

A model is developed to predict autoignition in a premixed charge engine. Experimental data are obtained with spark ignition and premixed charge compression ignition. Seven fuels are examined: methane, ethane, propane, n-butane, methanol, ethylene, and propylene. Binary fuel mixtures are also examined, as are the effects of engine speed, equivalence ratio, load, and compression ratio. An initial temperature correction must be used to accurately predict the observed time of autoignition. Analysis of spark-ignited data show that the fuels fall into two groups, depending on the temperature correction ranging from 35 K to 80 K: methane, propane, n-butane, and methanol. Three fuels fall into the group with a temperature correction ranging from 110K and 140K: ethane, ethylene, and propylene. The rate of pressure rise during compression ignition is controlled by varying the fuel-air equivalence ratio. The effects of compression ratio and load on the rate and load on the rate of pressure rise are also examined. The predicted rates of temperature rise during compression ignition are compared to the observed rates of temperature rise.

• Research Organization: Wisconsin Univ., Madison (USA)
• OSTI ID: 6347452
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330100* -- Internal Combustion Engines
CHEMICAL REACTION KINETICS
COMPRESSION
ENERGY SOURCES
ENGINES
FOSSIL FUELS
FUELS
HEAT ENGINES
IGNITION
INTERNAL COMBUSTION ENGINES
KINETICS
REACTION KINETICS
SPARK IGNITION ENGINES
STRATIFIED CHARGE ENGINES