Potential for Closed Loop Air-Fuel Ratio Management of a Diesel Engine

Li, S. C.; Oppenheim, A. K.

doi:10.4271/1999-01-0517

Cited by 7 publications

(3 citation statements)

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“…Good references on cylinder-pressure-based controls for diesel engines are provided by Johnson et al (1999), Nakayama et al (2003Nakayama et al ( , 2008, Klein et al (2007), and Husted et al (2007). Due to limited space, the details are not discussed here.…”

Section: Cylinder-pressure-based Controlsmentioning

confidence: 97%

Diesel engine system dynamics, transient performance, and electronic controls

Xin¹

2013

Diesel Engine System Design

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Section: Cylinder-pressure-based Controlsmentioning

confidence: 97%

Diesel engine system dynamics, transient performance, and electronic controls

Xin¹

2013

Diesel Engine System Design

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“…Much previous works on the functioning of DEs focused on engine performance and emissions. ,,,− ,,,,− Because of the uniqueness of the combustion process and certain technical limitations related to the measurement technique, the previous studies usually assessed combustion effects, which, as is commonly known, are determined by the fuel injection process and combustion chamber conditions. Because the course of the combustion process depends largely on the injection timing, ,− including the fuel injection pressure, ,,− the air–fuel ratio (AFR) (i.e., in the DE from its load), ,− and the gas temperature during injection, ,,,, it is very important to determine how these parameters affect the self-ignition properties of the 1-butanol–DF blend (1-BDB).…”

Section: Introductionmentioning

confidence: 99%

Effect of Injection Pressure and Air–Fuel Ratio on the Self-Ignition Properties of 1-Butanol–Diesel Fuel Blends: Study Using a Constant-Volume Combustion Chamber

Kuszewski

2019

Energy Fuels

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One of the ways to reduce the negative impact of diesel engines on the natural environment is to reduce the smoke opacity and emissions of nitrogen oxides. For this purpose, suitably programmed fuel injection strategies and exhaust after-treatment systems can be used. Another way to reduce the toxicity of diesel exhaust is to use oxygenated fuels. This approach is particularly important, as it also allows a reduction of the use of fuels processed from crude oil. As a potential oxygen additive, 1-butanol can be used. Because of the work cycle of a diesel engine, it is particularly important to determine the self-ignition properties of diesel fuels with such alcohol additives. In this study, the self-ignition properties of 1-butanol−diesel fuel blends were investigated, with the 1-butanol percentage up to 25% by volume. The experiments were conducted in a constant-volume combustion chamber, enabling the determination of the impact of the fuel injection pressure (ranging from 80 to 140 MPa) and the air−fuel ratio (ranging from 35 to 95) on the ignition and combustion delay periods for the fuel samples. The maximum and average combustion chamber pressure rise rates were studied, and investigations of self-ignition properties were conducted at an ambient gas temperature of 650 °C. It was observed that with the increasing 1-butanol volume percentage, ignition and combustion delay increased linearly, and an increase in the fuel injection pressure and air−fuel ratio affected the length of these periods to different degrees. Regardless of the volume percentage of 1-butanol, the fuel injection pressure, unlike the air−fuel ratio, had only a slight effect on the maximum and average combustion chamber pressure rise rates.

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“…Mateunas et al presented a method of pressure ratio (PR) to obtain character of cylinder pressure curve, in or-der to made cylinder combustion to be best by mediating ignite timing in minimum spark timing for the best torque (MBT) [3]. Leondhart provided another method of forming dynamic injection quantity and injection advance angle by cylinder pressure, so that monitoring injection parameter is performed [4]. With the development of electronic control and sensor technology, it is possible to optimize combustion process by pressure information.…”

Section: Introductionmentioning

confidence: 99%