The Effects of Compression Ratio on Nitric Oxide and Hydrocarbon Emissions from a Spark-Ignition Natural Gas Fuelled Engine

970506

02/24/1997

Event
International Congress & Exposition
Authors Abstract
Content
Steady state experiments on a single cylinder spark ignition engine were performed to investigate the effects of compression ratio on nitric oxide and hydrocarbon emissions using natural gas as the fuel. Compression ratios between 8 and 15 were investigated. Constant throttle tests were performed at different equivalence ratios, throttle openings and spark timing settings covering a wide range of these parameters.
In general, nitric oxide and hydrocarbon emissions were found to increase with compression ratio at fixed spark timing. With optimised (MBT) spark timing, however, reductions of emissions could be achieved at high compression ratio. This indicates that a fully optimised natural gas fuelled engine may be able to achieve high efficiency and low emissions.
Meta TagsDetails
DOI
https://doi.org/10.4271/970506
Pages
9
Citation
Takagaki, S., and Raine, R., "The Effects of Compression Ratio on Nitric Oxide and Hydrocarbon Emissions from a Spark-Ignition Natural Gas Fuelled Engine," SAE Technical Paper 970506, 1997, https://doi.org/10.4271/970506.
Additional Details
Publisher
Published
Feb 24, 1997
Product Code
970506
Content Type
Technical Paper
Language
English