Cycle by cycle variations of LPG-gasoline dual fuel on a multi-cylinder MPFI gasoline engine

Nayak Vighnesha, K. S. Shankar, P. Dinesha, P. Mohanan

Research output: Contribution to journalArticle

Abstract

Combustion stability of a multipoint port fuel injection spark ignition engine working on liquefied petroleum gas (LPG)-gasoline dual fuel mode of operation was analysed. LPG-gasoline ratio was varied from 0 to 100% by controlling the injector signals at wide open throttle condition and 3000 RPM. Increasing LPG ratio will give higher peak pressure and higher indicated mean effective pressure (IMEP) because of the higher flame propagation speed of LPG. The experiment showed that maximum pressure will occur nearer to top dead centre when compared to gasoline. Fluctuation in maximum pressure is higher for LPG and is minimum for 50% LPG. Time return map showed that combustion instabilibity will be more for 100% LPG and is less for 50% LPG. Coefficient of variation of IMEP and maximum pressure for gasoline is higher than LPG. With 100% LPG, NOx emission is almost three times that of gasoline. Hence it can be concluded that 50% LPG will give the better combustion characteristics when compared to other fuel blends.

Original languageEnglish
Pages (from-to)1-8
Number of pages8
JournalBiofuels
DOIs
Publication statusAccepted/In press - 01-03-2017

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liquefied petroleum gas
Liquefied petroleum gas
Engine cylinders
Gasoline
Engines
combustion
gasoline engine
Fuel injection
Internal combustion engines
Gas emissions
engine

All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment
  • Waste Management and Disposal

Cite this

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title = "Cycle by cycle variations of LPG-gasoline dual fuel on a multi-cylinder MPFI gasoline engine",
abstract = "Combustion stability of a multipoint port fuel injection spark ignition engine working on liquefied petroleum gas (LPG)-gasoline dual fuel mode of operation was analysed. LPG-gasoline ratio was varied from 0 to 100{\%} by controlling the injector signals at wide open throttle condition and 3000 RPM. Increasing LPG ratio will give higher peak pressure and higher indicated mean effective pressure (IMEP) because of the higher flame propagation speed of LPG. The experiment showed that maximum pressure will occur nearer to top dead centre when compared to gasoline. Fluctuation in maximum pressure is higher for LPG and is minimum for 50{\%} LPG. Time return map showed that combustion instabilibity will be more for 100{\%} LPG and is less for 50{\%} LPG. Coefficient of variation of IMEP and maximum pressure for gasoline is higher than LPG. With 100{\%} LPG, NOx emission is almost three times that of gasoline. Hence it can be concluded that 50{\%} LPG will give the better combustion characteristics when compared to other fuel blends.",
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Cycle by cycle variations of LPG-gasoline dual fuel on a multi-cylinder MPFI gasoline engine. / Vighnesha, Nayak; Shankar, K. S.; Dinesha, P.; Mohanan, P.

In: Biofuels, 01.03.2017, p. 1-8.

Research output: Contribution to journalArticle

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