scholarly journals Combustion and Exhaust Characteristics of Palm Oil in Medium Speed Marine Diesel Engine

2011 ◽  
Vol 46 (1) ◽  
pp. 127-132 ◽  
Author(s):  
Zhide Xu ◽  
Sumito Nishio ◽  
Masaru Ikame ◽  
Eiko Ishimura ◽  
Magoshiro Kuwabara
2010 ◽  
Vol 2010.16 (0) ◽  
pp. 371-372
Author(s):  
Zhide XU ◽  
Sumito NISHIO ◽  
Masaru IKAME ◽  
Magoshiro KUWABARA

Fuel ◽  
2016 ◽  
Vol 186 ◽  
pp. 456-465 ◽  
Author(s):  
L. Ntziachristos ◽  
E. Saukko ◽  
K. Lehtoranta ◽  
T. Rönkkö ◽  
H. Timonen ◽  
...  

2013 ◽  
Vol 291-294 ◽  
pp. 1920-1924
Author(s):  
Min Xiao ◽  
Hui Chen

The KIVA-3V program was used to make numerical simulation for L21/31 type of medium-speed marine diesel engine about the NOx emissions and the affection of NOx changing process on different variable parameters under the Tier Ⅱstandard. On this basis, a discussion towards the NOx emission of the model fueling with dimethyl ether (DME) to meet the Tier Ⅲ standard is offered. The results show that reducing the intake temperature, load and speed, postponing the fuel injection timing and intake lag angle properly can decrease the NOx emissions within the limits of NOx in TierⅡ standard. Comparing the results of the numerical simulation of DME and diesel fuel, the NOx emission of the former one is 60.85% of the latter one, and the NOx emission of changing variable parameters on DME engine is 35.56% of the original type of diesel engine, very close to the Tier Ⅲ.


2014 ◽  
Vol 1070-1072 ◽  
pp. 1785-1789
Author(s):  
Lei Guo ◽  
Zai Zhong Wang ◽  
Hong Zhao Lin

To predict accurately the fuel consumption rate of a diesel engine, based on polynomial fitting curve method, combined with the test data of XCW6200ZC medium speed marine diesel engine used for inland ships, a diesel engine fuel consumption model about characteristic coefficient and speed under the propulsion characteristic was established. The marine diesel engine fuel consumption were calculated and predicted through this model. The results showed that the model can predict the fuel consumption of diesel engine well.


1978 ◽  
Vol 192 (1) ◽  
pp. 371-376 ◽  
Author(s):  
G. Goodwin ◽  
R. Holmes

This paper describes research involving the measurement of oil-film thickness in a large end bearing of a medium-sized medium-speed marine diesel engine. The design of the transducer and its novel signal conditioning circuitry is discussed. Comparisons are made between the measured results and numerical predictions.


Author(s):  
А.В. Пассар ◽  
Д.В. Тимошенко ◽  
А.Н. Бердник

В статье представлены результаты исследований радиально-осевой турбины, работающей в составе импульсной системы наддува среднеоборотного судового дизеля. Исследования носили теоретический и экспериментальный характер и базировались на предлагаемом методе проектирования и расчета, который комбинируя на определенных этапах модели расчета радиально-осевой турбины, а также замкнутую модель рабочего процесса комбинированного двигателя, позволяет решать задачи проектирования проточных частей турбины для работы в нестационарном потоке импульсной системы наддува. Целью исследований является отработка основных положений предлагаемого метода проектирования радиально-осевой турбины, работающей в составе импульсной системы наддува комбинированного двигателя, на примере поиска оптимальных параметров радиально-осевой турбины турбокомпрессора среднеоборотного судового дизеля размерности 18/22. В работе получена модернизированная геометрия проточной части турбины. Представлены результаты экспериментальных и расчетных исследований характеристик модернизированной и штатной турбин, подтверждающие повышение эффективности модернизированной турбины во всем диапазоне ее характеристики. Представлены результаты испытаний судового дизеля 6ЧН 18/22 с модернизированной и штатной турбинами по нагрузочной характеристике, показывающие положительное влияние измененной геометрии турбины на эффективные показатели дизеля и подтверждающие возможность использования предлагаемого метода проектирования радиально-осевой турбины системы наддува комбинированного двигателя. The article presents the results of research on a radial-axial turbine operating as part of a pulsed boost system for a medium-speed marine diesel engine. The research was theoretical and experimental in nature and was based on the proposed design and calculation method, which combines at certain stages of the radial-axial turbine calculation model, as well as a closed model of the combined engine workflow, allows you to solve the problems of designing the flow parts of the turbine for operation in a non-stationary flow of a pulse boost system. The aim of the research is to develop basic provisions of the proposed design method of the radial-axial turbine, which is part of pulse systems boost engine combined, for example, finding the optimal parameters of the radial-axial turbine of the turbocharger, the medium-speed marine diesel dimensions 18/22. The upgraded geometry of the flow part of the turbine is obtained. The results of experimental and computational studies of the characteristics of upgraded and standard turbines are presented, confirming the increase in the efficiency of the upgraded turbine over the entire range of its characteristics. The results of tests of the 6ChN 18/22 marine diesel engine with upgraded and standard turbines on load characteristics are presented, showing the positive effect of the changed turbine geometry on the effective performance of the diesel engine and confirming the possibility of using the proposed method of designing a radial-axial turbine of the combined engine supercharging system.


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