Experimental investigations on effect of different compression ratios on enhancement of maximum hydrogen energy share in a compression ignition engine under dual-fuel mode

The study deals the effect of different compression ratios on maximum hydrogen energy share, thermal efficiency, and emissions in a 7.4 kW direct injection CI (compression ignition) engine under dual-fuel mode. Experimental tests were conducted on the engine with three different compression ratios (19.5:1 base (CR1), 16.5:1 (CR2), and 15.4:1 (CR3)) using hydrogen as main fuel and diesel as pilot fuel at 100% load and constant speed of 1500 rpm. Knock limited maximum hydrogen energy share enhanced significantly from 19% with CR1 to 59% and 63% with CR2 and CR3. The percentage reductions of NOx emission in the engine with CR2 and CR3 are about 43% and 48% respectively. HC (Hydrocarbon) and CO (carbon monoxide) emissions reached to zero level with the hydrogen addition at all compression ratios. The optimum compression ratio is 16.5:1 in view of higher thermal efficiency and lower emissions (HC, CO, smoke, and NOx). A notable conclusion emerged from the study is that the reduction in compression ratio of the engine is a promising option for the improvement in hydrogen energy share and thermal efficiency along with benefits of lower emissions.

[2]  P. Ram Reddy,et al.  Experimental Investigations on a Hydrogen-Diesel Dual Fuel Engine at Different Compression Ratios , 2007 .

[3]  J. Sodré,et al.  Hydrogen impacts on performance and CO2 emissions from a diesel power generator , 2013 .

[4]  Withit Chatlatanagulchai,et al.  Knock Control in a Diesel-Dual-Fuel Premixed-Charge- Compression-Ignition (DF-PCCI) Engine Using a Fuzzy Supervisory System , 2014 .

[5]  Wai K. Cheng,et al.  Understanding Knock Metric for Controlled Auto-Ignition Engines , 2013 .

[6]  Abdelrahman Hegab,et al.  Effect of adding oxygen to the intake air on a dual-fuel engine performance, emissions, and knock tendency , 2013 .

[7]  A.J. Torregrosa,et al.  Suitability analysis of advanced diesel combustion concepts for emissions and noise control , 2011 .

[8]  John B. Heywood,et al.  Internal combustion engine fundamentals , 1988 .

[9]  Nigel N. Clark,et al.  An experimental investigation of H2 emissions of a 2004 heavy-duty diesel engine supplemented with H2 , 2010 .

[10]  John E. Dec,et al.  Investigation of the Sources of Combustion Noise in HCCI Engines , 2014 .

[11]  T. Mahlia,et al.  Performance and emission analysis of hydrogen fueled compression ignition engine with variable water injection timing , 2012 .

[12]  K. A. Subramanian,et al.  Experimental investigation on effect of enhanced premixed charge on combustion characteristics of a direct injection diesel engine , 2014 .

[13]  Mohand Tazerout,et al.  Towards improvement of natural gas-diesel dual fuel mode: An experimental investigation on performance and exhaust emissions , 2014 .

[14]  A. Megaritis,et al.  Experimental investigation of the effects of simultaneous hydrogen and nitrogen addition on the emissions and combustion of a diesel engine , 2013 .

[15]  Mohamed Y. E. Selim,et al.  Sensitivity of dual fuel engine combustion and knocking limits to gaseous fuel composition , 2004 .

[16]  Horng-Wen Wu,et al.  Using Taguchi method on combustion performance of a diesel engine with diesel/biodiesel blend and port-inducting H2 , 2013 .

[17]  Ghazi A. Karim,et al.  Hydrogen as a spark ignition engine fuel , 2003 .

[18]  G. Nagarajan,et al.  Performance and emission studies on port injection of hydrogen with varied flow rates with Diesel as an ignition source , 2010 .

[19]  Probir Kumar Bose,et al.  An experimental investigation of performance-emission trade off of a CI engine fueled by diesel–compressed natural gas (CNG) combination and diesel–ethanol blends with CNG enrichment , 2013 .

[20]  Arindam Majumder,et al.  Multi objective optimization of performance parameters of a single cylinder diesel engine running with hydrogen using a Taguchi-fuzzy based approach , 2013 .

[21]  G. Karim,et al.  Experimental Investigation of the Knock and Combustion Characteristics of CH4, H2, CO, and Some of Their Mixtures , 2006 .

[22]  G. Nagarajan,et al.  Studies on dual fuel operation of rubber seed oil and its bio-diesel with hydrogen as the inducted fuel , 2008 .

[23]  Cenk Sayin,et al.  The effect of compression ratio on the performance, emissions and combustion of an SI (spark ignition) engine fueled with pure ethanol, methanol and unleaded gasoline , 2014 .

[24]  K. A. Subramanian,et al.  Assessment of maximum available work of a hydrogen fueled compression ignition engine using exergy analysis , 2014 .

[25]  G. Sriram,et al.  Bio-lubricant-biodiesel combination of rapeseed oil: An experimental investigation on engine oil tribology, performance, and emissions of variable compression engine , 2014 .

[26]  A. Dhole,et al.  Effect on performance and emissions of a dual fuel diesel engine using hydrogen and producer gas as secondary fuels , 2014 .

[27]  Martti Larmi,et al.  Ethanol dual-fuel combustion concept on heavy duty engine , 2013 .

[28]  K. Subramanian,et al.  Reduction of GHGs Emissions in a Biodiesel Fueled Diesel Engine Using Hydrogen , 2013 .

[29]  L. M. Das,et al.  Hydrogen fuel utilization in CI engine powered end utility systems , 1992 .

[30]  Xavier Tauzia,et al.  Experimental study of inlet manifold water injection on combustion and emissions of an automotive direct injection Diesel engine , 2010 .

[31]  G. Nagarajan,et al.  An experimental investigation on manifold‐injected hydrogen as a dual fuel for diesel engine system with different injection duration , 2009 .

[32]  Masato Mikami,et al.  Effect of hydrogen addition to intake air on combustion noise from a diesel engine , 2013 .

[33]  K. A. Subramanian,et al.  A CFD (computational fluid dynamics) study for optimization of gas injector orientation for performance improvement of a dual-fuel diesel engine , 2013 .

[34]  Dilip Sharma,et al.  Engine performance of optimized hydrogen-fueled direct injection engine , 2014 .

[35]  Marco E. Sanjuan,et al.  Auto-ignition control in turbocharged internal combustion engines operating with gaseous fuels , 2014 .

[36]  Fanhua Ma,et al.  Effects of compression ratio on the combustion and emission of a hydrogen enriched natural gas engine under different excess air ratio , 2013 .

[37]  Ghazi A. Karim,et al.  A kinetic examination of the effects of the presence of some gaseous fuels and preignition reaction products with hydrogen in engines , 1999 .

[38]  Ying Wang,et al.  Combustion and emission characteristics of a DME (dimethyl ether)-diesel dual fuel premixed charge compression ignition engine with EGR (exhaust gas recirculation) , 2014 .

[39]  K. A. Subramanian,et al.  Hydrogen energy share improvement along with NOx (oxides of nitrogen) emission reduction in a hydrogen dual-fuel compression ignition engine using water injection , 2014 .

[40]  K. Srinivasan,et al.  Analysis of exhaust waste heat recovery from a dual fuel low temperature combustion engine using an Organic Rankine Cycle , 2010 .

[41]  Ichiro Asano,et al.  Combustion, performance and emission characteristics of direct injection diesel engine fueled by Jatropha hydrogen peroxide emulsion , 2014 .

[42]  Horng-Wen Wu,et al.  Combustion characteristics and optimal factors determination with Taguchi method for diesel engines port-injecting hydrogen , 2012 .

[43]  K. A. Subramanian,et al.  An effort to enhance hydrogen energy share in a compression ignition engine under dual-fuel mode using low temperature combustion strategies , 2015 .

[44]  K. Srinivasan,et al.  Analysis of Ignition Behavior in a Turbocharged Direct Injection Dual Fuel Engine Using Propane and Methane as Primary Fuels , 2013 .

[45]  M. Mikami,et al.  Effect of hydrogen addition to intake gas on combustion and exhaust emission characteristics of a diesel engine , 2011 .

[46]  K. Wannatong,et al.  Fuzzy Knock Control of Diesel-Dual-Fuel Engine , 2011 .

[47]  S. Murugan,et al.  Investigation on combustion performance and emission characteristics of a DI (direct injection) diesel engine fueled with biogas–diesel in dual fuel mode , 2014 .