An analytical FEM-based study of the drawing process of an ultra-high-pressure common-rail fuel tube

Ahn, Seoyeon; Park, Jung-Kwon; Won, Jong-Phil; Kim, Hyunsoo; Kang, Insan; Cho, Yong-Seok; Shin, Sukshin

doi:10.1007/s12206-017-0628-9

Cited by 3 publications

(1 citation statement)

References 10 publications

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“…VCR method is used to determine optimal (CR) for diesel engines under different loads [9,10] in combination with other variable systems on engine, such are flexible intake valve actuation [11], exhaust gas recirculation (EGR) [12], and variable fuel injection time [13,14]. Generally, with integrated system for (VCR) it is possible to increase engine efficiency, power, and torque; the engine can to operate under multiple cycles with multifuel capability, i.e., well adjusting to knock limitations when use of various fuels.…”

Section: Introductionmentioning

confidence: 99%

Determination of Combustion Process Model Parameters in Diesel Engine with Variable Compression Ratio

Milojević

Pešić

2018

Journal of Combustion

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Compression ratio has very important influence on fuel economy, emission, and other performances of internal combustion engines. Application of variable compression ratio in diesel engines has a number of benefits, such as limiting maximal in cylinder pressure and extended field of the optimal operating regime to the prime requirements: consumption, power, emission, noise, and multifuel capability. The manuscript presents also the patented mechanism for automatic change engine compression ratio with twopiece connecting rod. Beside experimental research, modeling of combustion process of diesel engine with direct injection has been performed. The basic problem, selection of the parameters in double Vibe function used for modeling the diesel engine combustion process, also performed for different compression ratio values. The optimal compression ratio value was defined regarding minimal fuel consumption and exhaust emission. For this purpose the test bench in the Laboratory for Engines of the Faculty of Engineering, University of Kragujevac, is brought into operation.

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Section: Introductionmentioning

confidence: 99%

Determination of Combustion Process Model Parameters in Diesel Engine with Variable Compression Ratio

Milojević

Pešić

2018

Journal of Combustion

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Optimum curved die profile for tube drawing process with fixed conical plug

Farahani

Parvizi

Barooni

et al. 2018

Int J Adv Manuf Technol

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Research on the Effect of the Outlet Throttle Diameter Deviation on the Pressure Relief Rate of the Injector Control Valve

Ren

Tie-xiong

et al. 2022

Energies

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Common rail injector response characteristics depend on the control chamber pressure change rate, the outlet throttle diameter by manufacturing errors, or wear-induced deviations that affect the rate of pressure change in the control chamber, so the accuracy of the outlet throttle diameter directly affects the control valve response consistency. This paper presents a computational fluid dynamics (CFD) simulation of the effect of the deviation of the outlet throttle diameter on the average mass flow rate of the outlet throttle during the opening of the spherical valve in order to reduce this difference and ensure uniform injection characteristics. The results illustrate that with the increase in outlet throttle diameter deviation, the volume of gas phase in the control valve increases and the rate of pressure reduction in the control chamber accelerates, and the sensitivity coefficient of the average mass flow rate of the outlet throttle to the outlet throttle diameter deviation remains unchanged at 24.77. Cavitation occurs in the area of the outlet throttle when the spherical valve lift is 0.045 mm. The increase in rail pressure not only leads to an increase in the low-pressure area on the inner wall of the outlet throttle, an increase in the volume share of the gas phase, and an increase in the hydraulic impact on the sealing wall but also makes the average mass flow rate of the outlet throttle and the rate of change of the control chamber pressure during the opening of the spherical valve more sensitive to the deviation of the outlet throttle diameter.

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An analytical FEM-based study of the drawing process of an ultra-high-pressure common-rail fuel tube

Cited by 3 publications

References 10 publications

Determination of Combustion Process Model Parameters in Diesel Engine with Variable Compression Ratio

Determination of Combustion Process Model Parameters in Diesel Engine with Variable Compression Ratio

Optimum curved die profile for tube drawing process with fixed conical plug

Research on the Effect of the Outlet Throttle Diameter Deviation on the Pressure Relief Rate of the Injector Control Valve

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