Experimental investigation of fuel temperature effects on transient needle motion and injection velocity of solenoid type diesel injector

被引：6

作者：

Bae, Gyuhan ^{[1
]}

Choi, Sungsik ^{[1
]}

Lee, Sanggwon ^{[1
]}

Moon, Seoksu ^{[1
]}

Wang, Jin ^{[2
]}

Kim, Kihyun ^{[3
]}

Lee, Jinwoo ^{[4
]}

Kang, Jinsuk ^{[5
]}

机构：

[1] Inha Univ, Dept Mech Engn, 100 Inha Ro, Incheon 22212, South Korea

[2] Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA

[3] Silla Univ, Div Mech Convergence, Busan, South Korea

[4] Ulsan Coll, Sch Mech Engn, Ulsan, South Korea

[5] Hyundai Motors Co, Seoul, South Korea

来源：

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER | 2021年 / 181卷

基金：

新加坡国家研究基金会;

关键词：

diesel injector; fuel temperature; needle motion; injection velocity; X-ray phase-contrast imaging; ULTRAFAST X-RAY; SPRAY; DYNAMICS; PERFORMANCE; GEOMETRY; NUMBER;

D O I：

10.1016/j.ijheatmasstransfer.2021.121838

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Real driving emission (RDE) test conducted in sub-zero temperature conditions has been acting as a severe emission regulation over the existing test methods for diesel engines. In order to cope with this tightened regulation, many studies have been conducted to interpret the factors causing the deteriorated diesel engine combustion in cold operation conditions. The deteriorated fuel injection performance has been regarded as one of the key contributing factors but the governing mechanisms are not thoroughly understood so far. This study aims to provide a comprehensive understanding of the effects of fuel temperature including sub-zero conditions on fuel injection performance by measuring the transient needle motion and injection velocity of a diesel injector using synchrotron X-ray imaging techniques. The factors causing the deteriorated injector performance and their contributions are discussed thoroughly based on the results. The results showed that the injection duration was shortened as the fuel temperature decreased as a result of decreased needle opening speed and increased needle closing speed. The increase of fuel viscosity and bulk modulus was discussed as the main factors associated with these results. The total injection mass was reduced by lowering the fuel temperature not only by the shortened injection duration but also by the decreased injection velocity. These factors exerted near equivalent contribution to the reduced injection mass at low fuel temperatures. (c) 2021 Elsevier Ltd. All rights reserved.

引用

页数：9

共 26 条

[21] Fuel temperature influence on the performance of a last generation common-rail diesel ballistic injector. Part I: Experimental mass flow rate measurements and discussion [J].

Salvador, F. J. ;

Gimeno, J. ;

Carreres, M. ;

Crialesi-Esposito, M. .

ENERGY CONVERSION AND MANAGEMENT, 2016, 114 :364-375

[22] Impact of cold temperature on Euro 6 passenger car emissions [J].

Suarez-Bertoa, Ricardo ;

Astorga, Covadonga .

ENVIRONMENTAL POLLUTION, 2018, 234 :318-329

[23] Ultrafast X-ray study of dense-liquid-jet flow dynamics using structure-tracking velocimetry [J].

Wang, Yujie ;

Liu, Xin ;

Im, Kyoung-Su ;

Lee, Wah-Keat ;

Wang, Jin ;

Fezzaa, Kamel ;

Hung, David L. S. ;

Winkelman, James R. .

NATURE PHYSICS, 2008, 4 (04) :305-309

[24]

White FM., 2015, Fluid mechanics, V7th

[25] Cold-start NOx emissions: Diesel and waste lubricating oil as a fuel additive [J].

Zare, Ali ;

Bodisco, Timothy A. ;

Jafari, Mohammad ;

Verma, Puneet ;

Yang, Liping ;

Babaie, Meisam ;

Rahman, M. M. ;

Banks, Andrew ;

Ristovski, Zoran D. ;

Brown, Richard J. ;

Stevanovic, Svetlana .

FUEL, 2021, 286

[26] Experimental study on the effect of nozzle hole-to-hole angle on the near-field spray of diesel injector using fast X-ray phase-contrast imaging [J].

Zhang, Xusheng ;

Moon, Seoksu ;

Gao, Jian ;

Dufresne, Eric M. ;

Fezzaa, Kamel ;

Wang, Jin .

FUEL, 2016, 185 :142-150

← 1 2 3 →