Improvement of Scavenging Process of a Two-Stroke Gasoline Engine with Reciprocating-Type Exhaust Control Valve

Tadashi Murayama, Takemi Chikahisa, Bambang Sugiarto, Yoshio Sekiya

Research output: Contribution to journalArticlepeer-review

Abstract

The most important point for improving the performance of a crankcase-scavenged two-stroke engine is to reduce the fresh charge losses to the exhaust due to a short circuit. This paper investigates the effects of a reciprocating-type exhaust control valve on the engine performance and exhaust emissions, and the results are compared with those of a traditional rotary-type valve. The experimental results indicate that the reciprocating-type valve can improve specific fuel consumption more significantly than the rotary type-valve without decreasing power. The HC emission can also be reduced tremendously by the effect of reducing fresh-charge losses.

Original languageEnglish
Pages (from-to)1507-1512
Number of pages6
JournalTransactions of the Japan Society of Mechanical Engineers Series B
Volume60
Issue number572
DOIs
Publication statusPublished - 1 Jan 1994

Keywords

  • Cycle Variation
  • Exhaust Control Valve
  • HC Reduction
  • Scavenging
  • Two-Stroke Engine

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