Development of a Low Emission Two-Stroke Cycle Engine

Paper #:
  • 980761

Published:
  • 1998-02-23
Citation:
Sawada, T., Wada, M., Noguchi, M., and Kobayashi, B., "Development of a Low Emission Two-Stroke Cycle Engine," SAE Technical Paper 980761, 1998, https://doi.org/10.4271/980761.
Pages:
13
Abstract:
This paper focused experimental and theoretical studies on the effects of air-head stratified scavenging and leaner combustion on reducing hydrocarbon emission and improving thermal efficiency of two-stroke cycle spark-ignition engine.The result showed that the amount of short-circuiting mixture with a conventional Schnurle scavenging two-stroke cycle engine was reduced from 30% to 9% with the air-head stratified scavenging two-stroke cycle engine which was developed in this study. Thermal efficiency was improved from 13.6% to 20.6%. As the result, the engine with air-head stratified scavenging and leaner combustion in this study can conform to the California Air Resources Board (CARB) 1999 or tier 2 emission standards regarding THC, CO and NOx emission.
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