Effect of Fuel Injection Rate on Pollutant Emissions in DI Diesel Engine

Hwang, Jong‐Yeon; Kal, Han Joo; Kim, M. H.; Park, J. K.; Liu, Shenghua; Martychenko, Alexander A.; Chae, Jae Ou

doi:10.4271/1999-01-0195

Cited by 17 publications

(7 citation statements)

References 9 publications

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“…Many studies confirm that the injection rate history affects ignition and combustion characteristics and the temporal history of smoke and NO x formation in direct injection diesel engines (Juneja et al 2004;Desantes et al 1999;Hwang et al 1999). Fuel injection quantity should be controlled by engine parameters such as engine speed, load, and air motion in the combustion chamber.…”

Section: Discussionmentioning

confidence: 99%

“…Moreover, if the injection period is too long, it would inevitably produce excessive smoke and particulate emissions. In this case a pilot injection might be of some benefit (Hwang et al 1999).…”

Section: Discussionmentioning

confidence: 99%

“…Figure 2.13 shows an example of quasi-ideal injection rate histories in dependence on engine operating conditions (Hwang et al 1999).…”

Section: Injection Characteristicsmentioning

confidence: 99%

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Diesel Engine Characteristics

Kegl

Pehan

2013

Lecture Notes in Energy

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Diesel Engine Characteristics

Kegl

Pehan

2013

Lecture Notes in Energy

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“…1. Because its use leads to a better tradeoff between soot and NO x emissions in diesel engines [2], [3], [4], the boot profile is of tremendous interest.…”

Section: Introductionmentioning

confidence: 99%

Model-based estimation of piezoelectric fuel injector parameters

Pietrzak

Shaver

2014

2014 American Control Conference

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Fuel injection rate shaping is one path towards cleaner and more efficient diesel engines. Piezoelectrically actuated fuel injectors meet this requirement, but can exhibit improved model-based estimation performance when their internal parameters are estimated on line. To this end, this paper presents an online parameter estimation strategy for a piezoelectric fuel injector that results in improved fuel flow rate estimation when there is assumed to be some initial error in the parameter estimates. In the presence of an initial parameter error of 25%, the parameter estimator improved the model-based prediction of total injected fuel by approximately 10%.

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“…In addition, its aromatic and sulfur content may contribute to significant environmental pollution [1]. Several research studies have been carried out to control emissions from diesel engines by modifying the design and operating variables of the engine [2]. Even though this produces a small improvement in the emissions, the optimum solution is not reached.…”

Section: Introductionmentioning

confidence: 99%

Role of Biofuels in a Sustainable Environment – A Technical Study

Rao

Saravanan

2008

CLEAN Soil Air Water

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Creating a clean and safe environment has always been a challenge for researchers throughout the world. The use of fossil fuel has been a deterrent in attaining this objective. Therefore, attention has been focused on biofuels to suit this objective. In recent years, efforts have been directed towards environmentally friendly sources of alternate fuels for diesel engines. This paper compares the performance and emission characteristics of biofuels with mineral no. 2 diesel oil. A direct injection diesel engine coupled with an eddy current dynamometer is used for this investigation. Rice bran oil and neem oil are considered as biofuels for this work since they are renewable in nature. Rice bran oil is extracted from rice bran, which is a by‐product of the rice milling process. Neem oil is derived from neem seed, which are abundantly available in India. In addition to these oils, their blends with diesel are also used to test their ability for reducing emissions. This study indicated that, among the two biofuels, the rice bran oil and its blend shows better results with respect to emissions than the neem oil and its blend. The results for the rice bran oil and its blend are slightly better than those of diesel and superior to pure neem oil and its blend. The unburned hydrocarbon (UBHC) emissions of biofuels and their blends are lower when compared with diesel. Biofuels show lower nitrogen oxide (NOx) emissions when compared with diesel and biofuel blends. It was observed that the smoke intensities of all the fuels tested are similar up to 50% loads. At higher loads, biofuels and their blends showed slightly higher smoke intensities than diesel.

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Effect of Fuel Injection Rate on Pollutant Emissions in DI Diesel Engine

Cited by 17 publications

References 9 publications

Diesel Engine Characteristics

Diesel Engine Characteristics

Model-based estimation of piezoelectric fuel injector parameters

Role of Biofuels in a Sustainable Environment – A Technical Study

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