Hydrocarbon Modeling for Two-Stroke SI Engine

Paper #:
  • 940403

Published:
  • 1994-03-01
Citation:
Babu, P., Nagalingam, B., and Mehta, P., "Hydrocarbon Modeling for Two-Stroke SI Engine," SAE Technical Paper 940403, 1994, https://doi.org/10.4271/940403.
Pages:
15
Abstract:
Hydrocarbon emissions due to short-circuiting of the fresh charge during scavenging process is a major source of pollution from the two-stroke spark ignition engines. This work presents a prediction scheme for analysis of hydrocarbon emission based on the material balance considerations. A generalized form of globular combustion equation has been used for general applicability of the scheme to any fuel or fuel blends. The influence of mixture quality, scavenging characteristics, residual contents and the delivery ratio are predicted. A good qualitative prediction has been established at all delivery ratios. The predictions are found quantitatively satisfactory in the higher delivery ratio range where the short-circuiting phase of the scavenging process is dominant.
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