Hydrogen Fuelled Internal Combustion Engines

Mathur, H. B.

doi:10.1007/978-94-009-3809-0_11

Cited by 14 publications

(14 citation statements)

References 2 publications

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“…On increasing the compression ratio, the in cylinder air temperature increases and the combustion starts early enabling reduction of ignition delay [11][12][13]16].…”

Section: Variation In Combustion Parametersmentioning

confidence: 99%

Influence of compression ratio on combustion and performance characteristics of direct injection compression ignition engine

Hariram

Shangar

2015

Alexandria Engineering Journal

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The importance of diesel engines for human application is growing day by day. The engine operating parameters also play a key role in tuning the engine conforming to the better performance and emission standards. The effect of varying the compression ratios has more impact on the performance, emission and combustion parameters. In this study, single cylinder direct injection CI engine was tested on varying the compression ratios of 18, 17 and 16 at varying loads. The combustion and performance variation on reducing the compression ratios were investigated clearly. Reduction in brake thermal efficiency and increase in exhaust gas temperatures were observed when compression ratio was reduced from 18 to 16. The brake specific fuel consumption was increased on reducing the compression ratio. Reduction of peak cylinder pressure was observed on reduction of compression ratio and the ignition delay period increased on reducing the compression ratio. The peak heat release rate was closer to TDC on increasing compression ratios from 16 to 18. The rate of pressure rise was also investigated and showed maximum of 5.38 bar/°CA and minimum of 0.78 bar/°CA on above compression ratios. Cumulative heat release was also evaluated in this study showing higher heat energy for higher loads and compression ratios. The performance and combustion parameters on the useful compression ratio of 18 were also justified. ª 2015 Faculty of Engineering, Alexandria University. Production and hosting by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).

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“…On increasing the compression ratio, the in cylinder air temperature increases and the combustion starts early enabling reduction of ignition delay [11][12][13]16].…”

Section: Variation In Combustion Parametersmentioning

confidence: 99%

Influence of compression ratio on combustion and performance characteristics of direct injection compression ignition engine

Hariram

Shangar

2015

Alexandria Engineering Journal

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“…. The BTE increases as the load increases, and it is found that at 75% load, BTE is maximum as a result of lowest brake specific fuel consumption . The BTE results of B20M10 are compared with baseline diesel operations.…”

Section: Resultsmentioning

confidence: 99%

A study of the effect of injection pressure on the combustion, performance, and emission characteristics of cardanol biofuel blend fuelled compression ignition engine

Dinesha

Mohanan

2014

Asia-Pacific J Chem Eng

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The use of biodiesel along with other alternative fuel sources is expected to address the twin problems of pollution and energy security. This study investigates the effect of injection pressure (IP) on the performance, combustion, and emission characteristics of a four-stroke single cylinder direct injection diesel engine fuelled with a biofuel, namely cardanol-methanol-diesel blend (B20M10). The results are compared with baseline diesel operations under standard operating conditions. The biofuel blend B20M10 (20% cardanol, 10% methanol, and 70% diesel) is used as fuel, and the combustion, performance, and emission characteristics are investigated at IP levels of 180, 200, and 220 bar. The test results show that the optimum fuel IP is 220 bar with B20M10. At this optimized pressure, a reduction in CO, HC, and smoke emissions with an increase in the oxides of nitrogen (NO x ) and brake thermal efficiency (BTE) are noticed compared with 180 and 200 bar B20M10 operations. When compared with diesel (180 bar IP), B20M10 blend at 220 bar IP gives marginally lower BTE and lower CO and HC emissions, but oxides of nitrogen and smoke are slightly more.

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“…The formation of NO X is complex and depends on series of reactions called Zeldovich mechanism and kinetic studies reveal the fact that the increasing flame temperature increases NO X emissions [10,17]. The variation of NO X can be seen from the Fig 7 where it increased with increasing load due to increasing peak flame temperature.CR18IT25 shown the maximum NO X emissions at all loads and about 22 to 25% increase was seen at all loads compared to standard setting which was due to the fact that advanced injection timing gave sufficient time for allowing the NO X chemistry to occur [3].…”

Section: Effect Of Compression Ratio and Injection Timings On Oxides mentioning

confidence: 98%

“…The emission of Unburnt hydrocarbons occur as a direct effect of incomplete combustion and they are responsible for the smog formation [10]. Fig 5 shows the variation of Unburnt hydrocarbons with respect to Brake Mean Effective Pressure for various settings and UBHC generally decrease with increasing load conditions.CR17IT20 showed the highest UBHC emission over the entire range of loads which could be due to improper combustion as the injection timing was retarded and compression ratio was reduced.…”

Section: Effect Of Compression Ratio and Injection Timings On Ubhc Emmentioning

confidence: 99%

“…Emission norms are becoming stringent day by day and it is a difficult task to meet the stringent emission norms and improved performance characteristics of the engine. Investigation on adjusting the engine parameters like Injection timing, Compression ratio, Injection pressures, Combustion chamber design modification etc have been very widely carried out to improve the performance as well as to bring down the emission levels.CI engines generally operate at high compression ratios and reduction of CR reduces the thermal efficiency [10,16]. Injection timing is a very important parameter which influences the combustion and emission.…”

Section: Introductionmentioning

confidence: 99%

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Optimization of performance and emission parameters of single cylinder direct injection CI engine by varying compression ratio and injection timing

Hariram

Ramani

2015

2015 International Conference on Robotics, Automation, Control and Embedded Systems (RACE)

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Internal combustion engines play a key role in transportation and power generation sectors in which diesel engines occupy a prominent status. Reduction of exhaust emission in diesel engines is a difficult and challenging task without compromising the engine performance. Various parameters like injection timing, compression ratio, and injection pressure can be varied in order to attain the desired performance and emission results. This study involves the adjustment of both injection timing and compression ratio for attaining optimized performance and emission characteristics. Injection timing was advanced by 2 o and retarded by 3 o from the standard spill setting of 23 o bTDC. Reduction of compression ratio was carried out from standard setting of 18 to 17 by a specially designed tilting block arrangement. Experiments were carried out on varying the above parameters depicted optimum results of better performance and reduced emissions.

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Hydrogen Fuelled Internal Combustion Engines

Cited by 14 publications

References 2 publications

Influence of compression ratio on combustion and performance characteristics of direct injection compression ignition engine

Influence of compression ratio on combustion and performance characteristics of direct injection compression ignition engine

A study of the effect of injection pressure on the combustion, performance, and emission characteristics of cardanol biofuel blend fuelled compression ignition engine

Optimization of performance and emission parameters of single cylinder direct injection CI engine by varying compression ratio and injection timing

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