A Comparative Study of an Lpg- Spark Ignition Engine using Liquid Sequential Injection Technique

Tukiman, Mohd Mustaqim; Mustaffa, Norrizal; Fawzi, Mas; Osman, Shahrul Azmir; Madon, Rais Hanizam

doi:10.1051/matecconf/20167801050

Cited by 2 publications

(1 citation statement)

References 12 publications

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“…Generally, compositions of LPG are depending on season, country, supplier and cost of refinery product [8]. In addition, there are no fixed standard value for the LPG composition [9]. Therefore, composition of ratio of LPG directly affects the performance and emission when used in spark ignition engine during combustion [10].…”

Section: Introductionmentioning

confidence: 99%

Effect of Performance and Exhaust Emission using Liquid Phase LPG Sequential Injection as an Alternative Fuel in Spark Ignition Engine

Tukiman

Osman

Fawzi

et al. 2018

IJIE

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LPG has a higher research octane number (RON) and low carbon to hydrogen ratio contains. Thus, LPG has prospects to gain more performance and reducing the exhaust emission in spark ignition (SI) engine. The objectives of this study are to identify the influence liquid phase LPG system tested on SI engine and investigate the performance and exhaust emission of LPG and gasoline. The contain LPG has 60% butane and 40% propane, according to Materials Safety Data Sheet (MSDS). The experiment was operating on a 1.6 Liter, 4 inline cylinders from a Proton Gen 2 (S4PH). The engine fuel delivery was equipped with Multiport Injection (MPI) system. Injectors LPG Liquid Sequential Injection (LSI) was mounted at close intake valve without disturbing gasoline injectors. To control the LPG injector system, the piggy-back system was installed as to emulate the stock Electronic Control Unit (ECU). The engine was tested via chassis dynamometer at steady state conditions to analyze the Brake Power (BP) and Brake Torque (BT) at a desired engine speed from 1500rpm to 4000rpm with increments of 500rpm. Meanwhile, the Throttle Position (TP) was varied at four conditions that were 25%, 50%, 75% and 100% for every single engine speed. The result of the performance showed liquid phase LPG increased BT and BP in the range of 3% to 7%, BSFC was reduced in the range 21% to 52%. The exhaust emission from carbon monoxide (CO) was decreased in the range of 2% to 19%, exhaust emission from a hydrocarbon (HC) was emitted with increment in the range of 40% to70% and nitrogen oxide (NOX) exhaust emission was elevated in an average of 60% in comparison with gasoline. The LPG LSI system is more effective than gasoline in Spark Ignition (SI) engine at lower engine speed (1500rpm to 2500rpm) due to low Brake Specific Fuel Consumption (BSFC) and exhaust emission.

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Section: Introductionmentioning

confidence: 99%

Effect of Performance and Exhaust Emission using Liquid Phase LPG Sequential Injection as an Alternative Fuel in Spark Ignition Engine

Tukiman

Osman

Fawzi

et al. 2018

IJIE

Self Cite

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Performance, Combustion and Emissions Evaluation of Liquid Phase Port-Injected LPG on a Single Cylinder Heavy-Duty Spark Ignited Engine

Fosudo¹,

Kar²,

Windom³

et al. 2023

SAE Technical Paper Series

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<div class="section abstract"><div class="htmlview paragraph">Liquefied petroleum gas (LPG), like many other alternative fuels, has witnessed increased adoption in the last decade, and its use is projected to rise as stricter emissions regulations continue to be applied. However, much of its use is limited to dual fuel applications, gaseous phase injection, light-duty passenger vehicle applications, or scenarios that require conversion from gasoline engines. Therefore, to address these limitations and discover the most efficient means of harnessing its full potential, more research is required in the development of optimized fuel injection equipment for liquid port and direct injection, along with the implementation of advanced combustion strategies that will improve its thermal efficiency to the levels of conventional fuels. This paper focuses on the development of a liquid phase port-injection system for LPG, the design of a reference piston, and the baseline evaluation of the performance, combustion, and emissions characteristics of a single cylinder research engine to establish a benchmark comparable to existing LPG engines. A sweep of start of injection (SOI) timing is performed by injecting liquid LPG at several closed and open intake valve timings, which demonstrates no significant variation in engine performance, but accounts for a 10% reduction in bsCO with the optimal SOI timing. Spark timing sweep demonstrates the 50% burn crank angle location related to maximum brake torque (MBT) point with a brake thermal efficiency (BTE) of ~34% for the tested load case. The effect of equivalence ratio is also presented with optimal SOI timing at MBT condition. The engine starts exhibiting knocking combustion at 140kPa intake manifold air pressure (IMAP) with a peak torque of 253Nm and a 5% reduction in brake specific fuel consumption compared to the naturally aspirated scenario.</div></div>

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A Comparative Study of an Lpg- Spark Ignition Engine using Liquid Sequential Injection Technique

Cited by 2 publications

References 12 publications

Effect of Performance and Exhaust Emission using Liquid Phase LPG Sequential Injection as an Alternative Fuel in Spark Ignition Engine

Effect of Performance and Exhaust Emission using Liquid Phase LPG Sequential Injection as an Alternative Fuel in Spark Ignition Engine

Performance, Combustion and Emissions Evaluation of Liquid Phase Port-Injected LPG on a Single Cylinder Heavy-Duty Spark Ignited Engine

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