This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Study on Improvement of Natural Gas Fueled Spark Ignition Engines -Effect of EGR Utilization-
Annotation ability available
Sector:
Language:
English
Abstract
An experimental study was conducted to investigate the effect of EGR on combustion and exhaust emissions characteristics of a spark-ignited, super-charged, stoichiometric gas engine in order to achieve high BMEP equivalent to that of diesel engines. A four-stroke-cycle single-cylinder test engine was used. EGR was completely mixed with intake air before being introduced into the compressor. The results indicate that dry EGR utilizing drained exhaust gas improved the maximum mean effective pressure, as well as specific fuel consumption over the whole load due to improved knock characteristics of the unburnt mixture, increased specific heat ratio (κ), and reduced heat loss. Further experiments were conducted to identify the effect of humidity in the mixture on engine performance. The lean burn method was compared with the EGR method.
Recommended Content
| Technical Paper | Lean Burn Natural Gas Operation vs. Stoichiometric Operation with EGR and a Three Way Catalyst |
| Technical Paper | Low Emissions Approaches for Heavy-Duty Gas-Powered Urban Vehicles |
Topic
Citation
Sakonji, T. and Shoji, F., "Study on Improvement of Natural Gas Fueled Spark Ignition Engines -Effect of EGR Utilization-," SAE Technical Paper 971714, 1997, https://doi.org/10.4271/971714.Also In
References
- Hundleby G.E. Low Emissions Approaches for Heavy-duty Gas-powered Urban Vehicles SAE Paper 892134 1989
- Fukutani et al. Transactions of the Japan Society of Mechanical Engineers 52-474 B 1986 991 996