Effects of EGR on Knock-Level of Small Spark Ignition Engine with Gasoline-Base Kerosene-Mixed Fuel

Enomoto, Hiroshi; Nozue, Hirotaka; Hieda, Noboru

doi:10.4271/2013-32-9114

Cited by 3 publications

(1 citation statement)

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“…Increasing the amount of kerosene in the blends will increase the knock intensity Raine, 2008, 2009). Enomoto et al (2013) investigated the knock strength of burning kerosene/gasoline mixed fuel for a small displacement four-stroke SI engine with the exhaust gas recirculation (EGR) and ignition timing. The EGR could reduce the knock strength in any kerosene mixture fuel with the control of the ignition timing.…”

Section: Introductionmentioning

confidence: 99%

Knock combustion investigation on a two-stroke spark ignition UAV engine burning RP-3 kerosene fuel

Sheng

et al. 2019

AEAT

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Purpose The purpose of this paper is to investigate the knock combustion characteristics, including the combustion pressure, heat release rate (HRR) and knock intensity of aviation kerosene fuel, that is, Rocket Propellant 3 (RP-3), on a port-injected two-stoke spark ignition (SI) engine. Design/methodology/approach Experimental investigation using a bench test and the statistical analysis of data to reflect the knock combustion characteristics of the two-stroke SI unmanned aerial vehicle (UAV) engine on RP-3 kerosene fuel. Findings Under the full load condition of 4,000 rpm, at the ignition timing of 25 degree of crank angle (°CA) before top dead centre (BTDC), the knock combustion is sensitive to the thinner mixture; therefore, the knock begins to occur when the excess air ratio is larger than 1.0. When the excess air ratio is set as 1.2, the knock obviously appears with the highest knock intensity. At the excess air ratio of 1.2, better engine performance is obtained at the ignition timing range of 20-30 °CA BTDC. However, the ignition timing at 30° CA BTDC significantly increases the peak combustion pressure and knock intensity with the advancing heat release process. Practical implications Gasoline has a low flash point, a high-saturated vapour pressure and relatively high volatility, and it is a potential hazard near a naked flame at room temperature, which can create significant security risks for its storage, transport and use. The authors adopt a low-volatility single RP-3 kerosene fuel for all vehicles and equipment to minimise the number of different devices using various fuels and improve the military application safety. Originality/value Most two-stroke SI UAV engines for military applications burn gasoline. A kerosene-based fuel for stable engine operation can be achieved because the knock combustion can be effectively suppressed through the combined adjustment of the fuel amount and spark timing.

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Section: Introductionmentioning

confidence: 99%

Knock combustion investigation on a two-stroke spark ignition UAV engine burning RP-3 kerosene fuel

Sheng

et al. 2019

AEAT

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Abnormal Combustion Diagnosis and Combustion Period Based Phase Estimation with a Modified Form Tandem Ion Current Detection System on SI Gasoline Engines

Chao

Dong

et al. 2019

Energy Procedia

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Effect of Ignition Timing on Small SI Engine Torque at WOT Condition with Syngas from Wood Biomass Gasifier

Enomoto,

Teraoka,

Hieda

et al. 2015

SAE Technical Paper Series

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<div class="section abstract"><div class="htmlview paragraph">Recently, alternative power generation that does not use the oil has attracted attention. There is a power generation using a biomass in one of them. However, biomass power plants is fewer in Japan. Below are two reasons why biomass power plants is few. Firstly, biomass resources are widely and thinly. So, biomass resources is a high transportation cost. Secondly, Efficiency of small biomass plant is low. Therefore, we're working with high-efficiency small biomass gasifier to the development of the power generation method. First, we generated the gas biomass by pyrolysis. Next, SI-ICE has examined whether it can be operated continuously when produced gas was thrown into the SI-ICE. In addition, when the produced gas was charged, changing the ignition timing was examined whether affect much to SI-ICE. The results of the experiment, continued operation of the SI-ICE was possible. Ignition timing was advanced, so that SI-ICE was increased efficiency and power. However, minimum advance for best torque is not found was impossible. Also, to discuss combustion in cylinder was impossible. Combustion in the cylinder is not stabilized. Because of composition and flow of produced gas was not stable.</div></div>

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Effects of EGR on Knock-Level of Small Spark Ignition Engine with Gasoline-Base Kerosene-Mixed Fuel

Cited by 3 publications

References 0 publications

Knock combustion investigation on a two-stroke spark ignition UAV engine burning RP-3 kerosene fuel

Knock combustion investigation on a two-stroke spark ignition UAV engine burning RP-3 kerosene fuel

Abnormal Combustion Diagnosis and Combustion Period Based Phase Estimation with a Modified Form Tandem Ion Current Detection System on SI Gasoline Engines

Effect of Ignition Timing on Small SI Engine Torque at WOT Condition with Syngas from Wood Biomass Gasifier

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