Gasoline direct injection (GDI) two-stroke engine technology has been developed for use in snowmobile applications. Applying GDI to a two-stroke engine significantly reduces emissions of unburned hydrocarbons and improves fuel economy by reducing or eliminating the short circuiting of fuel that occurs in conventional carbureted two-stroke engines. The GDI design allows for two different modes of combustion, stratified and homogeneous. Stratified combustion is typically used during idle and light to moderate loads at low engine speeds while homogeneous combustion is used at moderate to high loads and medium to high engine speeds. This work presents the process and results of determining which mode of combustion provides better fuel economy during cruise point operation, and where the transition from stratified to homogeneous combustion should occur in snowmobile operation. Results show that homogeneous calibration is the superior mode of combustion for the cruise points of a snowmobile.
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ASME 2008 Internal Combustion Engine Division Spring Technical Conference
April 27–30, 2008
Chicago, Illinois, USA
Conference Sponsors:
- Internal Combustion Engine Division
ISBN:
0-7918-4813-2
PROCEEDINGS PAPER
Comparison of Stratified and Homogeneous Combustion in a Direct-Injected Two-Stroke Engine for Snowmobile Applications
Justin Johnson,
Justin Johnson
University of Idaho, Moscow, ID
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Karen R. Den Braven
Karen R. Den Braven
University of Idaho, Moscow, ID
Search for other works by this author on:
Justin Johnson
University of Idaho, Moscow, ID
Karen R. Den Braven
University of Idaho, Moscow, ID
Paper No:
ICES2008-1654, pp. 37-45; 9 pages
Published Online:
June 11, 2009
Citation
Johnson, J, & Den Braven, KR. "Comparison of Stratified and Homogeneous Combustion in a Direct-Injected Two-Stroke Engine for Snowmobile Applications." Proceedings of the ASME 2008 Internal Combustion Engine Division Spring Technical Conference. ASME 2008 Internal Combustion Engine Division Spring Technical Conference. Chicago, Illinois, USA. April 27–30, 2008. pp. 37-45. ASME. https://doi.org/10.1115/ICES2008-1654
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