NOx Emission prediction based on measurement of in-cylinder pressure for CI engine running with diesel and biodiesel

Belachew Chekene Tesfa, Rakesh Mishra, Fengshou Gu, Andrew Ball

Research output: Contribution to journalArticle

Abstract

NOx is one of the major toxic emissions that needs to be regulated stringently in both EU and USA emission regulations. The engine designer is keen to get an accurate, reliable and cost effective NOx measurement system. In this paper, the application of the cylinder pressure for predicting the NOx emission of compression ignition (CI) engine fuelled with diesel and biodiesel during steady state operations is carried out. To address the problem, an experimental work was conducted on four-cylinder, turbo-charged, four-stroke and direct-injection CI engine which was fuelled with diesel and biodiesel blends. During the experiment, the main parameters consisting of in-cylinder pressure, fuel flow rate, air flow rate, and the NOx emission, were measured. The temperature within the cylinder was predicted using the cylinder pressure and air flow rate. Using the temperature values, the NOx emission was simulated in the Zeldovich extended mechanism. The simulation result was then compared with the measured one for a range of engine operating conditions. The models were shown to produce consistent results with the measured one for a range of engine working speeds and loads.
LanguageEnglish
Pages54-65
Number of pages12
JournalInternational Journal of Automotive Engineering and Technologies
Volume3
Issue number2
DOIs
Publication statusPublished - 2014

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Engine cylinders
Biodiesel
Ignition
Engines
Flow rate
Direct injection
Air
Temperature
Costs
Experiments

Cite this

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title = "NOx Emission prediction based on measurement of in-cylinder pressure for CI engine running with diesel and biodiesel",
abstract = "NOx is one of the major toxic emissions that needs to be regulated stringently in both EU and USA emission regulations. The engine designer is keen to get an accurate, reliable and cost effective NOx measurement system. In this paper, the application of the cylinder pressure for predicting the NOx emission of compression ignition (CI) engine fuelled with diesel and biodiesel during steady state operations is carried out. To address the problem, an experimental work was conducted on four-cylinder, turbo-charged, four-stroke and direct-injection CI engine which was fuelled with diesel and biodiesel blends. During the experiment, the main parameters consisting of in-cylinder pressure, fuel flow rate, air flow rate, and the NOx emission, were measured. The temperature within the cylinder was predicted using the cylinder pressure and air flow rate. Using the temperature values, the NOx emission was simulated in the Zeldovich extended mechanism. The simulation result was then compared with the measured one for a range of engine operating conditions. The models were shown to produce consistent results with the measured one for a range of engine working speeds and loads.",
keywords = "NOx emission prediction, In-cylinder pressure, In-cylinder temperature, biodiesel, Zeldovich mechanism, transient measurement",
author = "Tesfa, {Belachew Chekene} and Rakesh Mishra and Fengshou Gu and Andrew Ball",
year = "2014",
doi = "10.18245/ijaet.42717",
language = "English",
volume = "3",
pages = "54--65",
journal = "International Journal of Automotive Engineering and Technologies",
issn = "2146-9067",
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}

TY - JOUR

T1 - NOx Emission prediction based on measurement of in-cylinder pressure for CI engine running with diesel and biodiesel

AU - Tesfa, Belachew Chekene

AU - Mishra, Rakesh

AU - Gu, Fengshou

AU - Ball, Andrew

PY - 2014

Y1 - 2014

N2 - NOx is one of the major toxic emissions that needs to be regulated stringently in both EU and USA emission regulations. The engine designer is keen to get an accurate, reliable and cost effective NOx measurement system. In this paper, the application of the cylinder pressure for predicting the NOx emission of compression ignition (CI) engine fuelled with diesel and biodiesel during steady state operations is carried out. To address the problem, an experimental work was conducted on four-cylinder, turbo-charged, four-stroke and direct-injection CI engine which was fuelled with diesel and biodiesel blends. During the experiment, the main parameters consisting of in-cylinder pressure, fuel flow rate, air flow rate, and the NOx emission, were measured. The temperature within the cylinder was predicted using the cylinder pressure and air flow rate. Using the temperature values, the NOx emission was simulated in the Zeldovich extended mechanism. The simulation result was then compared with the measured one for a range of engine operating conditions. The models were shown to produce consistent results with the measured one for a range of engine working speeds and loads.

AB - NOx is one of the major toxic emissions that needs to be regulated stringently in both EU and USA emission regulations. The engine designer is keen to get an accurate, reliable and cost effective NOx measurement system. In this paper, the application of the cylinder pressure for predicting the NOx emission of compression ignition (CI) engine fuelled with diesel and biodiesel during steady state operations is carried out. To address the problem, an experimental work was conducted on four-cylinder, turbo-charged, four-stroke and direct-injection CI engine which was fuelled with diesel and biodiesel blends. During the experiment, the main parameters consisting of in-cylinder pressure, fuel flow rate, air flow rate, and the NOx emission, were measured. The temperature within the cylinder was predicted using the cylinder pressure and air flow rate. Using the temperature values, the NOx emission was simulated in the Zeldovich extended mechanism. The simulation result was then compared with the measured one for a range of engine operating conditions. The models were shown to produce consistent results with the measured one for a range of engine working speeds and loads.

KW - NOx emission prediction

KW - In-cylinder pressure

KW - In-cylinder temperature

KW - biodiesel

KW - Zeldovich mechanism

KW - transient measurement

U2 - 10.18245/ijaet.42717

DO - 10.18245/ijaet.42717

M3 - Article

VL - 3

SP - 54

EP - 65

JO - International Journal of Automotive Engineering and Technologies

T2 - International Journal of Automotive Engineering and Technologies

JF - International Journal of Automotive Engineering and Technologies

SN - 2146-9067

IS - 2

ER -