Development and Validation of a Reduced Reaction Mechanism for Biodiesel-Fueled Engine Simulations- SAE 2008-01-1378

Journal Article · Tue Jan 01 04:00:00 EST 2008 · Journal of the Society of Automotive Engineers of Japan

OSTI ID:936283

Brakora, Jessica L ^[1]; Ra, Youngchul ^[1]; Reitz, Rolf ^[2]; McFarlane, Joanna ^[1]; Daw, C Stuart ^[1]

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1. ORNL
2. University of Wisconsin

In the present study a skeletal chemical reaction mechanism for biodiesel surrogate fuel was developed and validated for multi-dimensional engine combustion simulations. The reduced mechanism was generated from an existing detailed methyl butanoate oxidation mechanism containing 264 species and 1219 reactions. The reduction process included flux analysis, ignition sensitivity analysis, and optimization of reaction rate constants under constant volume conditions. The current reduced mechanism consists of 41 species and 150 reactions and gives predictions in excellent agreement with those of the comprehensive mechanism. In order to validate the mechanism under biodiesel-fueled engine conditions, it was combined with another skeletal mechanism for n-heptane oxidation. This combined reaction mechanism, ERC-Bio, contains 53 species and 156 reactions, which can be used for diesel/biodiesel blend engine simulations. Biodiesel-fueled engine operation was successfully simulated using the ERC-Bio mechanism.

• Research Organization: Oak Ridge National Laboratory (ORNL); Fuels, Engines and Emissions Research Center
• Sponsoring Organization: ORNL LDRD Director's R&D
• DOE Contract Number: AC05-00OR22725
• OSTI ID: 936283
• Journal Information: Journal of the Society of Automotive Engineers of Japan, Journal Name: Journal of the Society of Automotive Engineers of Japan
• Country of Publication: United States
• Language: English

Related Subjects

09 BIOMASS FUELS
33 ADVANCED PROPULSION SYSTEMS
BIOFUELS
COMBUSTION KINETICS
COMPUTERIZED SIMULATION
DIESEL ENGINES
Engine Simulation Biodiesel Kinetics
HEPTANE
OXIDATION
SENSITIVITY ANALYSIS
VALIDATION