Experimental investigation of effect of stratified charging system adopted to gasoline engine running with LPG on engine performance

Can, İ̇brahim; Öner, Cengiz; Sugözü, İlker

doi:10.1179/1743967112z.00000000053

Cited by 2 publications

(3 citation statements)

References 1 publication

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“…The primary problem with using LPG in direct injection systems is to deliver the gas fuel. Therefore, a homogeneous charge gasoline engine was transformed into a stratified charge engine by making several modifications to the cylinder head and suction manifold of a gasoline engine, and favorable results were obtained [1]. This study demonstrates that improvements on performance, fuel consumption and emission values could be achieved by making modifications to different types of engines.…”

Section: Introductionmentioning

confidence: 86%

“…have offered many examples of stratified charge engines to the present day, no mass-production has taken place as with the classical motors (Weaving, 1990). This is because of the failure to provide an easily combustible rich mixture around the spark plug at overall load and speed regimes, and to safely combust the poor mixture [1]. Currently, commonly known stratified charge engine type is the Direct Injection (DI) systems.…”

Section: Introductionmentioning

confidence: 99%

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The Investigation of velocity and temperature changes by CFD analysis for intake stroke of LPG fuel stratified engine

Can¹,

Öner²,

Alnak³

et al. 2017

International Journal of Automotive Engineering and Technologies

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This study numerically investigates the in-cylinder speed and temperature variations for fuel-air mixture intake at the induction stroke by the LPG cylinder of an engine running on the stratified charge principle. The present study is based on the CFD model created using experimental data. Examinations were performed between the top dead center and the bottom dead center during the induction stroke. Incylinder speed and temperature variations were obtained by k-ε turbulence model depending on the crankshaft angle and revolutions per minute (900, 3000, 5500 rpm). The obtained results were compared with the known theoretical values for stratified charge engines, and consistent results were obtained.

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Section: Introductionmentioning

confidence: 86%

Section: Introductionmentioning

confidence: 99%

The Investigation of velocity and temperature changes by CFD analysis for intake stroke of LPG fuel stratified engine

Can¹,

Öner²,

Alnak³

et al. 2017

International Journal of Automotive Engineering and Technologies

View full text Add to dashboard Cite

show abstract

“…Scholars have done many researches on the subject of LPG engine emissions [2][3][4][5]. However, the researches mainly have focused on the steady-state emissions behavior of LPG engine, with much less attention paid to the emissions behavior under transient operating conditions, especially accelerat ion and deceleration.…”

Section: Introductionmentioning

confidence: 99%

Experimental Analysis of HC Emission Behavior from a Lean Burn LPG Engine during Transient Operating Conditions

Zhang

2017

MATEC Web Conf.

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Abstract. Based on engine bench test system, the HC emission behavior of a lean burn LPG engine during constant speed and changing (increasing an d de creasing) torque transient conditions was investigated. Results show that HC is significantly deteriorated under the experimental operating conditions. HC concentration value is higher than the steady-state value by 2.3% an d 14.2%, respectively. T he response of the actual torque lags behind the desired torque by 2.047s and 2.109s, respectively, and leads to the actual speed deviates from the desired value by 4.5% and 3.7%. T he deviation of the actual speed causes the fluctuations of IAA, which is the key reason for the deterioration of HC under increasing torque operation. The control of fuel valve cannot meet the demand of the actual LPG mass durin g the transient operating conditions, leads to the actual LPG mass value deviate from the target value by 4.7% and 8.8%, respectively. And this is also the main responsibility for the actual AFR deviate from the target value by 5.1% and 8.2%, respectively. During the decreasing torque operation, caused by the deviation of the actual AFR, the mixture is too rich, which results in the deterioration of HC.

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Experimental investigation of effect of stratified charging system adopted to gasoline engine running with LPG on engine performance

Cited by 2 publications

References 1 publication

The Investigation of velocity and temperature changes by CFD analysis for intake stroke of LPG fuel stratified engine

The Investigation of velocity and temperature changes by CFD analysis for intake stroke of LPG fuel stratified engine

Experimental Analysis of HC Emission Behavior from a Lean Burn LPG Engine during Transient Operating Conditions

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