Browse Publications Technical Papers 2002-01-0111
2002-03-04

Compression Ratio Influence on Maximum Load of a Natural Gas Fueled HCCI Engine 2002-01-0111

This paper discusses the compression ratio influence on maximum load of a Natural Gas HCCI engine. A modified Volvo TD100 truck engine is controlled in a closed-loop fashion by enriching the Natural Gas mixture with Hydrogen. The first section of the paper illustrates and discusses the potential of using hydrogen enrichment of natural gas to control combustion timing. Cylinder pressure is used as the feedback and the 50 percent burn angle is the controlled parameter. Full-cycle simulation is compared to some of the experimental data and then used to enhance some of the experimental observations dealing with ignition timing, thermal boundary conditions, emissions and how they affect engine stability and performance. High load issues common to HCCI are discussed in light of the inherent performance and emissions tradeoff and the disappearance of feasible operating space at high engine loads. The problems of tighter limits for combustion timing, unstable operational points and physical constraints at high loads are discussed and illustrated by experimental results. Finally, the influence on operational limits, i.e. emissions peak pressure rise and peak cylinder pressure, from compression ratio at high load are discussed.

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

Detailed 3D-CFD/Chemistry of CNG-Hydrogen Blend in HCCI Engine

2010-01-0165

View Details

TECHNICAL PAPER

Combustion and Emission Characteristics of Heavy Duty SI Engine Fueled with Synthetic Natural Gas (SNG)

2013-01-0026

View Details

JOURNAL ARTICLE

Study of Basic Injection Configurations using a Direct-Injection Hydrogen Research Engine

2009-01-1418

View Details

X