Thermal Load in a Heavy Duty Diesel Engine with EUI System

Jeon, Yongmin; Kim, S. I.; Park, S. I.; Kim, J. S.; Choi, Kyu Hoon; Jin, Joon-Ha

doi:10.4271/2002-01-0492

Cited by 5 publications

(3 citation statements)

References 4 publications

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“…A thermocouple bead (Omega, Stamford, CT) was positioned 1 mm away from the inner surface of the cylinder. The surface temperatures of the cylinder head/block were compensated from the temperatures measured 1 mm away from the surface using the approach similar to that used by Jeon et al [13]. Temperatures during each experimental condition were the 15 min average temperatures after they became steady.…”

Section: Kngine Specification and Coolant Circuitmentioning

confidence: 99%

Experimental Investigation of Thermal Load in High Speed Direct Injection Diesel Engine Under the Control of Various Engine Performance Parameters

Lee

2010

Journal of Engineering for Gas Turbines and Power

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Multiple injection strategies are being widely utilized to reduce the vibration, noise, and particle emission in diesel engines. A considerable amount of research related to attempts to increase the maximum power and to reduce vibration, noise, and particulate matters has been done. However, investigations of various performance parameters in terms of the thermal load in high speed direct injection engines are rarely to be found despite the fact that the relationship between these parameters and the reliability of the engine is important for mass production. Hence, the thermal load imposed on the cylinder head and cylinder block of a four-cylinder diesel engine was investigated under the mo.st severe test conditions, at the rated speed and with a full load, by changing the performance parameters such as the main injection timing, the fuel pressure in the common rail, the boost pressure, the exhaust gas recirculation, the fuel quantity of the pilot injection, the timing of the pilot injection, the fuel quantity of the postinjection, and the timing of postinjection. Experimental results showed that the main injection timing among other parameters was the parameter that influenced the thermal load most at the rated engine speed and under a full load condition.

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Section: Kngine Specification and Coolant Circuitmentioning

confidence: 99%

Experimental Investigation of Thermal Load in High Speed Direct Injection Diesel Engine Under the Control of Various Engine Performance Parameters

Lee

2010

Journal of Engineering for Gas Turbines and Power

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“…Contrary to a common rail fuel injection system where a single pump pressurizes the fuel to 1000 to 2000 bar on a common fuel rail from which fuel is supplied to the injectors, Delphi's Unit injector receives fuel at significantly lower pressure of 100 to 200 bar and pressurizes the fuel with the help of a camshaft that drives the plunger on the tail of the injector to compress a small portion of a fuel to pressures up to 2500 bar [19,39]. As a result, each cylinder possesses a separate injection pumping mechanism that can attain desired injection pressures at a higher response rate which cannot be achieved in a common rail system due to the larger dead volume of the common rail system [39][40][41]. Figure 10.…”

Section: Nozzle Opening Pressure (Nop)mentioning

confidence: 99%

“…Regardless, the holistic effect of SOI shows that reducing or delaying SOI will lower combustion temperatures and reduces peak in-cylinder pressures which decrease in-cylinder NOx formation also reduces brake-specific fuel consumption and increases soot formation. Advancing or increasing the SOI angle has the opposite effect on these combustion parameters, fuel consumption, NOx and soot emissions [3,19,36,41,[44][45][46].…”

Section: Start Of Injection (Soi)mentioning

confidence: 99%

Dual-layered Multi-Objective Genetic Algorithms (D-MOGA): A Robust Solution for Modern Engine Development and Calibrations

Padmavathy¹

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Dual-layered Multi-Objective Genetic Algorithms (D-MOGA): A Robust Solution for Modern Engine Development and Calibrations Pragalath Thiruvengadam Padmavathy Heavy-duty (HD) diesel engines are the primary propulsion systems used within the freight transportation sector and are subjected to stringent emissions regulations. The primary objective of this study is to develop a robust calibration technique for HD engine optimization in order to meet current and future regulated emissions standards during certification cycles and vocational activities such as drayage operations. Recently, California-Air Resources Board (C-ARB) has also shown interests in controlling off-certification cycle emissions from vehicles operating in the state of California by funding projects such as the Ultra-Low NOx study by Sharp et. al [1]. Moreover, there is a major push for the complex real-world driving emissions testing protocol as the confirmatory and certification testing procedure in Europe and Asia through the United Nations-Economic Commission for Europe (UN-ECE) and International Organization for Standardization (ISO). This calls for more advanced and innovative approaches to optimize engine operation to meet the regulated certification levels. A robust engine calibration technique was developed using dual-layered multi-objective genetic algorithms (D-MOGA) to determine necessary engine control parameter settings. The study focused on reducing fuel consumption and lowering oxides of nitrogen (NOx) emissions, while simultaneously increasing exhaust temperatures for thermal management of exhaust aftertreatment system. The study also focused on using D-MOGA to develop a calibration routine that simultaneously calibrates engine control parameters for transient certification cycles and

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Memory test system for piston steady-state temperature measurement

Dai

Huang

et al. 2017

Applied Thermal Engineering

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Thermal Load in a Heavy Duty Diesel Engine with EUI System

Cited by 5 publications

References 4 publications

Experimental Investigation of Thermal Load in High Speed Direct Injection Diesel Engine Under the Control of Various Engine Performance Parameters

Experimental Investigation of Thermal Load in High Speed Direct Injection Diesel Engine Under the Control of Various Engine Performance Parameters

Dual-layered Multi-Objective Genetic Algorithms (D-MOGA): A Robust Solution for Modern Engine Development and Calibrations

Memory test system for piston steady-state temperature measurement

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