Performance and Emission Characteristics of Direct Injection C.I Engine Retrofitted with Mono-CNG System

Osman, Shahrul Azmir; Alimin, Ahmad Jais; Ismail, Mohd Yusri; Hui, Koh Wern

doi:10.4028/www.scientific.net/amm.446-447.443

Cited by 3 publications

(2 citation statements)

References 4 publications

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“…Malaysia alone estimated to have an increment of gross domestic product (GDP) by 4.6% in between 2004 to 2030, which indicate that increased of GDP by 1% approximately resulted to growth of energy demand by 1% [2]. Transportation sector are one of the major contributor in rise of energy demand mainly from gasoline and diesel engine vehicles which consumed depleted fossilized fuels [3][4][5]. Perhaps one of the potential solution that could possibly bring back the balanced in energy consumption and the climatic change in this world is by introducing the biofuel in the transportation areas [6][7].…”

Section: Introductionmentioning

confidence: 99%

Investigation of emissions characteristics of secondary butyl alcohol-gasoline blends in a port fuel injection spark ignition engine

et al. 2016

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Abstract. Exhaust emissions especially from light duty gasoline engine are a major contributor to air pollution due to the large number of vehicles on the road. The purpose of this study is to experimentally analyse the exhaust pollutant emissions of a four-stroke port fuel spark ignition engines operating using secondary butyl alcohol-gasoline blends by percentage volume of 5% (GBu5), 10% (GBu10) and 15% (GBu15) of secondary butyl-alcohol (2-butanol) additives in gasoline fuels at 50% of wide throttle open. The exhaust emissions characteristics of the engine using blended fuels was compared to the exhaust emissions of the engine with gasoline fuels (G100) as a reference fuels. Exhaust emissions analysis results show that all of the blended fuels produced lower CO by 8.6%, 11.6% and 24.8% for GBu5, GBu10 and GBu15 respectively from 2500 to 4000 RPM, while for HC, both GBu10 and GBu15 were lower than that G100 fuels at all engine speeds. In general, when the engine was operated using blended fuels, the engine produced lower CO and HC, but higher CO 2 .

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Section: Introductionmentioning

confidence: 99%

Investigation of emissions characteristics of secondary butyl alcohol-gasoline blends in a port fuel injection spark ignition engine

et al. 2016

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“…Prior to this study, a 4.3L 4-cylinder diesel engine was modified and retrofitted with a CNG gas system [8]. This type of engine is mainly used by medium duty trucks, such as tanker and mini dump truck.…”

Section: Introductionmentioning

confidence: 99%

Optimizing the Ignition Timing of a Converted CNG Mono-Gas Engine

Fawzi

Hashim

Zulkifli

et al. 2014

AMM

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Abstract. Governmental policies on renewable energy and environmental act are aggressively being enforced to mitigate recent climate change. Natural gas is not renewable but it is the most abundant and has the lowest Lifecycle CO 2 emission among fossil fuel. Realizing such promising alternative, many logistics and transportation companies are converting their existing diesel-fueled vehicle to CNG-fueled. Researchers have shown that CNG engines offer advantages compared to diesel and gasoline engines such as high efficiency and low emissions. Prior to this work, a 4.3L 4-cylinder diesel engine was modified and retrofitted with a CNG mono gas system. However, it was observed that the engine, CNG-fueled combustion is not stable especially at idling speed. The purpose of this study is to optimize the ignition timing best suited for idling both in normal operating mode (700-850 rpm) and in cold start mode (1000-2000 rpm). The ignition timings tested were 20 o BTDC and 25 o BTDC. The measurements were made at engine speeds from 700 to 2500 rpm. Some irregularities were found in the result, but overall, the ignition timing 25 o BTDC is better than 20 o BTDC in terms of fuel consumption and exhaust gas emissions. For this particular system, the results recommend that the idling engine speed should be at 700-800 rpm and 1500 rpm during the normal mode and cold start mode respectively. The use of engine speed of 1000 to 1300 rpm should be minimized to reduce overall exhaust gas emissions.

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Combustion and Emissions Characteristics of a Compression Ignition Engine Fuelled With N-Butanol Blends

et al. 2015

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The use of biomass based renewable fuel, n-butanol blends for compression ignition (CI) engine has attracted wide attention due to its superior properties such as better miscibility, higher energy content, and cetane number as compared to other alternatives fuel. In this present study the use of n-butanol 10% blends (Bu10) with diesel fuel has been tested using multi-cylinder, 4-stroke engine with common rail direct injection system to investigate the combustion and emissions of the blended fuels. Based on the tested engine at BMEP=3.5Bar. Based on the results Bu10 fuel indicates lower first and second peak pressure by 5.4% and 2.4% for engine speed 1000rpm and 4.4% and 2.1% for engine speed 2500rpm compared to diesel fuel respectively. Percentage reduction relative to diesel fuel at engine speeds 1000rpm and 2500rpm for Bu10: Exhaust temperature was 7.5% and 5.2% respectively; Nitrogen oxides (NOx) 73.4% and 11.3% respectively.

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Performance and Emission Characteristics of Direct Injection C.I Engine Retrofitted with Mono-CNG System

Cited by 3 publications

References 4 publications

Investigation of emissions characteristics of secondary butyl alcohol-gasoline blends in a port fuel injection spark ignition engine

Investigation of emissions characteristics of secondary butyl alcohol-gasoline blends in a port fuel injection spark ignition engine

Optimizing the Ignition Timing of a Converted CNG Mono-Gas Engine

Combustion and Emissions Characteristics of a Compression Ignition Engine Fuelled With N-Butanol Blends

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