sFuel Injection Pressure Effect on Performance of Direct Injection Diesel Engines Based on Experiment

Bakar, Rosli Abu; Semin, Semin; Ismail, Aziah

doi:10.3844/ajassp.2008.197.202

Cited by 89 publications

(20 citation statements)

References 9 publications

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“…This could be attributed to higher viscosity and lower volatility of biodiesel blended fuels. As the IP was increased from 600 to 900 the BTE increased and highest BTE was observed with 900 bar (Pundir et al, 2007, Bakar et al, 2008. At 100% load similar trends were observed with lower BTE values as shown in the Fig.…”

Section: Effect Of Injection Pressuresupporting

confidence: 59%

Experimental investigations on CRDI diesel engine fuelled with acid oil methyl ester (AOME) and its blends with ethanol

Shrivastava¹,

Kulkarni²,

Kumarappa³

et al. 2017

Int. J. Eng. Sci. Tech

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Biodiesel which is propelled as substitute to diesel fuel though attractive is not viable at present state because of its high production cost with the major concern of finding a permanent resource. As basically biodiesel is a assortment of fatty acid methyl ester it can also be produced from non-glyceride sources like acid oil which is non-edible, easily obtainable in significant amounts at the majority of the vegetable oil processing plants. This paper mainly focuses on the utilization of Acid Oil Methyl Ester (AOME) and its combinations with diesel and ethanol in different proportionsin a modified diesel engine fitted with Common Rail Direct Injection (CRDI) facilities. Acid oil was suitably trans-esterified to obtain its ester AOME and was subsequently blended with diesel and ethanol and characterization of the obtained fuels were done. A functional single cylinder diesel engine was duly converted to CRDI engine in which Conventional Mechanical Fuel Injection System (CMFIS) was replaced with CRDI facilities in order to inject biodiesel at higher injection pressures. Experiments were conducted to examine the influence of Injection Timing (IT), and Injector opening Pressure (IP) on the performance of modified CRDI engine fuelled with AOME and its blends with diesel and ethanol for improved engine performance. The experimental examination revealed IT of 10 o bTDC as well as IP of 900 bar as the most excellent engine operating parameters to achieve the highest Brake Thermal Efficiency (BTE) with lowered Hydro-Carbon (HC), Carbon Monoxide (CO), smoke emissions while, oxides of nitrogen (NOx) emissions were found to be superior for the fuel combinations employed in the investigation.

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Section: Effect Of Injection Pressuresupporting

confidence: 59%

Experimental investigations on CRDI diesel engine fuelled with acid oil methyl ester (AOME) and its blends with ethanol

Shrivastava¹,

Kulkarni²,

Kumarappa³

et al. 2017

Int. J. Eng. Sci. Tech

View full text Add to dashboard Cite

show abstract

“…Figure 9 shows the effect of injector opening pressures on BTE of modified diesel engine fitted with CRDI system using diesel and UOME biodiesel for different injection pressures of 600, 700, 800, 900 and 1000 bar at 80% and 100% load respectively. At higher injection pressure the BTE improves due to efficient utilization of fuel associated with better atomization (Bakar et al 2008). Amongst all the injection pressures tested, the highest BTE was observed with IOP of 900 bar.…”

Section: Optimization Of Injector Opening Pressure (Iop)mentioning

confidence: 79%

Performance evaluation of common rail direct injection (CRDI) engine fuelled with Uppage Oil Methyl Ester (UOME)

Basavarajappa¹,

Banapurmath²,

Khandal

et al. 2015

Int. J. Renew. Energy Dev.

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For economic and social development of any country energy is one of the most essential requirements. Continuously increasing price of crude petroleum fuels in the present days coupled with alarming emissions and stringent emission regulations has led to growing attention towards use of alternative fuels like vegetable oils, alcoholic and gaseous fuels for diesel engine applications. Use of such fuels can ease the burden on the economy by curtailing the fuel imports. Diesel engines are highly efficient and the main problems associated with them is their high smoke and NOx emissions. Hence there is an urgent need to promote the use of alternative fuels in place of high speed diesel (HSD) as substitute. India has a large agriculture base that can be used as a feed stock to obtain newer fuel which is renewable and sustainable. Accordingly Uppage oil methyl ester (UOME) biodiesel was selected as an alternative fuel. Use of biodiesels in diesel engines fitted with mechanical fuel injection systems has limitation on the injector opening pressure (300 bar). CRDI system can overcome this drawback by injecting fuel at very high pressures (1500-2500 bar) and is most suitable for biodiesel fuels which are high viscous. This paper presents the performance and emission characteristics of a CRDI diesel engine fuelled with UOME biodiesel at different injection timings and injection pressures. From the experimental evidence it was revealed that UOME biodiesel yielded overall better performance with reduced emissions at retarded injection timing of -10° BTDC in CRDI mode of engine operation.

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“…NOx and CO2 emissions increased while there is lower smoke number, CO, and UHC emissions produced at high injection pressure [12]. The increasing injection pressure is in accordance with increasing power [13]. ID is significantly increased on advancing the injection timing [14].…”

Section: E Effect Of High Pressure On Ignition Delaymentioning

confidence: 99%

Variation in Ignition Delay with Changing the Environment inside the Combustion Chamber for Different Sprays

Gupta¹,

Khan²

2019

IJITEE

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Ignition delay is very important parameter which influences the entire combustion process and emissions generated inside the engine. An experimental study was conducted to observe the variation in ignition delay with changing environment inside the combustion chamber for different sprays. Two types of nozzles namely pintle nozzle and single hole nozzle were used for creating hollow cone spray and solid cone spray respectively. This study was carried at different injection pressures (100 bar, 150 bar and 200 bar), different HST (350°C, 450°C and 550°C) and different air pressures (10 bar, 15 bar, 20 bar and 25 bar) for obtaining the value of ID. A digital Oscilloscope is used to record ID and optical method was used for detecting the flame. Results of the experiments show that air pressure, injection pressure and HST all are responsible for variation in ID but HST is more strongly affect the ID compared to other parameters. However at high value of HST and injection pressures variation in ID is less. Variations in the values of ID are more for Solid cone spray than Hollow Cone spray although ID is decreased for both sprays at almost all injection pressures. The dependency of types of spray is more prominent in lower temperature ranges compared to higher temperature ranges.

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sFuel Injection Pressure Effect on Performance of Direct Injection Diesel Engines Based on Experiment

Cited by 89 publications

References 9 publications

Experimental investigations on CRDI diesel engine fuelled with acid oil methyl ester (AOME) and its blends with ethanol

Experimental investigations on CRDI diesel engine fuelled with acid oil methyl ester (AOME) and its blends with ethanol

Performance evaluation of common rail direct injection (CRDI) engine fuelled with Uppage Oil Methyl Ester (UOME)

Variation in Ignition Delay with Changing the Environment inside the Combustion Chamber for Different Sprays

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