Browse Publications Technical Papers 2015-01-1985
2015-09-01

Performance and Emission Optimization of Pilot Ignited Natural Gas Diesel Engine with Single and Dual Injection Pilot Strategies and MBC toolkit 2015-01-1985

Pilot ignited natural gas diesel engine (PINGDE) was demonstrated to achieve low NOx emission, high fuel economy and low fuel cost. Despite of that, PINGDE is still confronted with problems such as high mechanical and thermal stress under heavy load, high CO and THC emission under small load and a trade-off relationship between NOx emission and fuel efficiency for whole operating points.
In this study, tests were conducted to explore how three main variables including pilot injection timing, pilot diesel substitution rate and two kinds of pilot injection strategies influence the performance and emission of the modified WP10 engine. Two pilot injection strategies including pilot diesel injected once and twice were proposed and potential of promoting fuel economy and saving fuel cost was demonstrated. Moreover, a numerical engine model is established to optimize engine performance and emission with the help of MBC toolkit through limited experiments.
Results show that, dual pilot injection strategy achieved better NOx and methane emission and 2 percent fuel efficiency rise and 5 percent fuel cost saving rate rise under small load. Model based calibration achieved wider high fuel efficiency area and higher fuel cost saving rate than manual calibration results while ESC NOx emission is set to below 5 g/kwh.

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

Calibration Optimization of a Heavy-Duty Diesel Engine with GTL Diesel Fuel

2016-01-0622

View Details

JOURNAL ARTICLE

Development Trends for Commercial and Industrial Engines

2014-01-2325

View Details

TECHNICAL PAPER

EGR and Intake Charge Temperature Effects on Dual-Fuel HCCI Combustion and Emissions Characteristics

2011-24-0050

View Details

X