Browse Publications Technical Papers 2013-24-0115
2013-09-08

Effect of the Shape of the Combustion Chamber on Dual Fuel Combustion 2013-24-0115

The effect of the shape of the bowl on the combustion process and emissions of a Natural Gas - Diesel dual fuel engine is analyzed. The simulation of the dual fuel combustion is performed with a modified version of the KIVA3V code where diesel is treated as the main fuel and a further reacting specie is introduced as methane (CH4). The auto-ignition of the pilot is simulated with a modified version of the Shell model and the first stage of the combustion, related to the pilot burning process, is simulated with the Characteristic Time Combustion model. When the temperature of the mixture reaches a certain threshold, a kernel of combustion is initialized. Until the kernel reaches a nominal radius the combustion of CH4 is prevented. The combustion of CH4 is simulated with a turbulent characteristic time too. Numerical models were chosen as a compromise between accuracy and computational time. The model has been validated with comparison to experimental data including in-cylinder pressure traces and tailpipe emissions. The numerical analysis has been performed with respect to a single cylinder diesel engine converted to dual fuel combustion. The results of the investigation showed that the conversion rate of CH4 can be increased by optimizing the bowl profile.

SAE MOBILUS

Subscribers can view annotate, and download all of SAE's content. Learn More »

Access SAE MOBILUS »

Members save up to 18% off list price.
Login to see discount.
Special Offer: Download multiple Technical Papers each year? TechSelect is a cost-effective subscription option to select and download 12-100 full-text Technical Papers per year. Find more information here.
We also recommend:
TECHNICAL PAPER

Combustion Noise Measurements and Control from Small Diesel and Dual Fuel Engines

2004-32-0072

View Details

TECHNICAL PAPER

Towards Model-Based Control of RCCI-CDF Mode-Switching in Dual Fuel Engines

2018-01-0263

View Details

JOURNAL ARTICLE

Advanced Knock Detection for Diesel/Natural Gas Engine Operation

2016-01-0785

View Details

X