Effect of mixing chamber venturi, injection timing, compression ratio and EGR on the performance of dual-fuel engine operated with HOME and CNG

Banapurmath, N. R.; Basavarajappa, Y.H.; Tewari, P.G.

doi:10.1080/19397038.2011.603847

Cited by 6 publications

(9 citation statements)

References 23 publications

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“…Earlier studies reported by the authors highlighted that advancing the injection timing of pilot fuel from 19 o to 27 o bTDCimproved the biodiesel-CNG performance [15,27]. In the present work, CNG injection delay and on-time were optimized based on the improved performance and emission characteristics of the dual fuel engine keeping pilot injection timing of 27º bTDC, compression ratio of 17.5 and pilot injection pressure of 230bar.…”

Section: Resultsmentioning

confidence: 99%

“…In the present work, CNG injection delay and on-time were optimized based on the improved performance and emission characteristics of the dual fuel engine keeping pilot injection timing of 27º bTDC, compression ratio of 17.5 and pilot injection pressure of 230bar. The heat release rate of the fuel causes a variation of gas pressure and temperature within the engine cylinder, and strongly affects the fuel economy, power output and emissions of the engine [27]. It provides a good insight into the combustion process that takes place in the engine.…”

Section: Resultsmentioning

confidence: 99%

“…The smoke levels for diesel-E15-CNG, HOME-E15-CNG and JOME-E15-CNG manifold injection dual fuel operation when engine was operated with CNG injection timing of 5 o bTDC and injection duration of 60 o CA were found to be 44, 54 and 58 HSU respectively. Moreover, smoke produced in DFC is mainly due to the pilot injection of diesel/biodiesels used for combustion initiation and combustion of CNG produces no particulates [27]. Figure 7 shows the variation of HC with injection timing and injection duration for CNG-diesel, CNG-HOME and CNG-JOME with15% ethanol blended dual fuel operation for 80% load respectively.…”

Section: Smoke Opacitymentioning

confidence: 99%

“…Studies on diesel-CNG DFC systems have been conducted by many researchers. Few studies on the use of biodiesel as pilot fuel for DFC systems have been reported [7,[27][28][29][30]. Higher boiling point of biodiesel makes it easy and safe to handle.…”

Section: Introductionmentioning

confidence: 99%

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Effect of CNG manifold Injection on the Performance, Combustion and Emission characteristics of a CNG -Biodiesel Dual Fuel Operation/Bir manifolda enjekte edilen CNG-Biyodizel Çift Yakıt Çalışmasının Perf.,Yanma ve Emisyon Karakteristikleri Üzerine Etkisi

Banapurmath¹,

Basavarajappa²

2016

IJAET

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Energy demand at a global level is increasing day by day and fossil fuel resources are on the verge of becoming extinct. The drastic increase of the oil prices in the global oil market and the increased pollution levels created an interest to find renewable, sustainable and alternative fuels. Natural gas (NG) is considered as a most prominent alternative fuel due to its many advantages including its ready availability and its low emission levels. A diesel engine was converted to operate in dual fuel engine mode in which compressed natural gas (CNG) was injected using a specially developed electronic control unit (ECU) into the intake manifold while injected pilot biodiesel auto ignites and it becomes a source of ignition for CNG. Experimental investigations were conducted over a single cylinder water cooled four stroke dual fuel CI engine test rig operated using diesel, honge methyl ester (HOME), jatropha methyl ester (JOME) and their blends with 15% ethanol as injected pilot fuels and CNG as injected primary fuel. ECU was used for varying the injection timings and injection durations for CNG injection while the optimum injection timing for diesel/biodiesel was maintained at 27°bTDC. The pilot fuel injection pressure was maintained at 230 bar. Engine was operated with constant compression ratio of 17.5 and CNG flow rate was maintained at 0.5 kg/h. The experimental results showed that an injection timing of 5 o bTDC and injection duration of 60 o CA for CNG injection was found to be optimum based on the improved performance, combustion and emission characteristics. The brake thermal efficiency for manifold injected CNG-diesel/biodiesel-ethanol blended dual fuel operation at 80% load was found to be 27.1%, 26.2% and 25.2% for diesel-ethanol blend, HOME-ethanol blend and JOME-ethanol blends respectively. The carbon exhaust emissions and smoke emissions were found to be lesser in CNG injected dual fuel operation compared to CNG inducted dual fuel operation.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Smoke Opacitymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effect of CNG manifold Injection on the Performance, Combustion and Emission characteristics of a CNG -Biodiesel Dual Fuel Operation/Bir manifolda enjekte edilen CNG-Biyodizel Çift Yakıt Çalışmasının Perf.,Yanma ve Emisyon Karakteristikleri Üzerine Etkisi

Banapurmath¹,

Basavarajappa²

2016

IJAET

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“…However, most of studies on DFC systems has been conducted with diesel fuel as a pilot fuel to ignite HCNG as a main fuel. Few studies on the use of biodiesel as pilot fuel for DFC systems have been reported [7,[27][28][29][30]. Biodiesel has great potential as an alternative fuel for compression ignition engines due to its properties, which are similar to diesel.…”

Section: Introductionmentioning

confidence: 99%

Performance, Combustion and Emission characteristics of a Manifold Injected HCNG-Biodiesel Dual Fuel Operation / Bir Manifolda Enjekte Edilen HCNG-Biyodizelin Çift Yakıtlı Çalışmasının Performans, Yanma ve Emisyon Karakteristikleri

Gireesh¹,

Banapurmath²,

Tewari³

2016

IJAET

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Vehicular exhaust emission control and engine efficiency are the most important parameters in current engine design. The Euro V emission norms are directing the research towards developing new technologies for combating engine emissions. Natural gas has become a widely used alternative fuel due to its many advantages including its ready availability and its low emission levels. Addition of hydrogen to CNG improves the composition and properties of base fuel CNG. In the present work a diesel engine was converted to operate in dual fuel engine mode in which Hydrogen-compressed natural gas (HCNG) was injected into the intake manifold using a specially developed electronic control unit (ECU) while diesel/biodiesel was injected directly inside the combustion chamber during the compression stroke. Experimental investigations were then carried out on a single cylinder four stroke CI engine test rig operated in dual fuel mode using Diesel, Honge methyl ester (HOME), Jatropha methyl ester (JOME) as injected pilot fuels and HCNG as injected primary fuel. ECU was used for varying the injection timings and injection durations for HCNG injection while the optimum injection timing for diesel/biodiesel was maintained at 27°bTDC.The pilot fuel injection pressure was maintained at 230 bar. Engine was operated with constant compression ratio of 17.5 and HCNG flow rate was maintained at 0.5kg/h. The experimental results showed that an injection timing of 5 o bTDC and injection duration of 40 o bTDC for HCNG injection was found to be optimum based on the improved performance, combustion and emission characteristics. The brake thermal efficiency for manifold injected HCNG dual fuel operation with diesel, HOME and JOME at 80% load was found to be 28.1%, 27.2% and 26.2% respectively. The Smoke emissions, Carbon monoxide (CO), Carbon dioxide (CO2) emissions were found to be lesser with an injection timing of 5 o bTDC and injection duration of 40 o bTDC in HCNG injected dual fuel operation. The use of HCNG manifold injection in the dual fuel operated CI engine improves the performance and reduces the exhaust emissions from the engine except for HC and NOX emissions.

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Engine combustion and emission fuelled with natural gas: A review

Chen

Zhong

2019

Journal of the Energy Institute

185

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Effect of mixing chamber venturi, injection timing, compression ratio and EGR on the performance of dual-fuel engine operated with HOME and CNG

Cited by 6 publications

References 23 publications

Effect of CNG manifold Injection on the Performance, Combustion and Emission characteristics of a CNG -Biodiesel Dual Fuel Operation/Bir manifolda enjekte edilen CNG-Biyodizel Çift Yakıt Çalışmasının Perf.,Yanma ve Emisyon Karakteristikleri Üzerine Etkisi

Effect of CNG manifold Injection on the Performance, Combustion and Emission characteristics of a CNG -Biodiesel Dual Fuel Operation/Bir manifolda enjekte edilen CNG-Biyodizel Çift Yakıt Çalışmasının Perf.,Yanma ve Emisyon Karakteristikleri Üzerine Etkisi

Performance, Combustion and Emission characteristics of a Manifold Injected HCNG-Biodiesel Dual Fuel Operation / Bir Manifolda Enjekte Edilen HCNG-Biyodizelin Çift Yakıtlı Çalışmasının Performans, Yanma ve Emisyon Karakteristikleri

Engine combustion and emission fuelled with natural gas: A review

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