Combustion characteristics of a spark-ignited split-cycle engine fuelled with methane

• Autorzy: Cameron I. , Sobiesiak A.
• Języki publikacji: EN

Abstrakty

EN

This paper begins with a brief introduction to the operating principles of a split-cycle engine that utilizes a valved, intermediary volume to connect the two engine cylinders. Results from experimental testing of the engine fueled with pure methane are presented with a particular emphasis on the combustion duration and phasing. Two different methods of analysing the combustion duration – the mass fraction burn (MFB) and normalized pressure ratio (PRN) – are given. Testing was performed at wide open throttle (WOT) for engine speeds ranging from 850–1200 rpm, and air-fuel equivalence ratios from 0.8–1.0. The results indicate that the main combustion duration is very rapid for all conditions tested, despite late combustion phasing. Changes in spark timing were shown to have a considerable impact on IMEP but did not greatly effect the burn duration. Cyclic variability of IMEP was found to be less than 4% for all cases, except when operation was leaner than ø = 0.85, indicating good combustion stability.

Słowa kluczowe

EN

spark ignition engines; split-cycle; methane; natural gas; CNG; fast burn; turbulence

PL

silnik o zapłonie iskrowym; metan; gaz ziemny; CNG; turbulencje

• Wydawca: Polskie Towarzystwo Naukowe Silników Spalinowych
• Czasopismo: Combustion Engines
• Rocznik: 2015
• Tom: R. 54, nr 2
• Strony: 33--41
• Opis fizyczny: Bibliogr. 27 poz., wykr.

Twórcy

autor

Cameron I.

• University of Windsor, Ontario, Canada

autor

Sobiesiak A.

• Department of Mechanical, Automotive and Materials Engineering, University of Windsor, Canada

Bibliografia

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