Experimental Survey of Lubricant-Film Characteristics and Oil Consumption in a Small Diesel Engine

1991 ◽  
Author(s):  
Victor W. Wong ◽  
David P. Hoult
Keyword(s):  
Diesel Engine ◽  
Lubricant Film ◽  
Oil Consumption ◽  
Film Characteristics ◽  
Experimental Survey

scholarly journals The influence of the injection frequency on the urea selective catalytic reduction systems performance

2017 ◽  
Vol 170 (3) ◽  
pp. 73-77
Author(s):  
Rafał ROGÓŻ ◽  
Piotr JAWORSKI ◽  
Łukasz KAPUSTA ◽  
Andrzej TEODORCZYK
Keyword(s):  
Diesel Engine ◽  
System Performance ◽  
Catalytic Reduction ◽  
Film Formation ◽  
Flow Conditions ◽  
Wall Film ◽  
Injection Frequency ◽  
Crystallization Risk ◽  
Film Characteristics ◽  
Operating Points

This study presents the influence of the UWS injection frequency on a close coupled SCR systems performance. The investigation was performed with the CFD tool AVL Fire. In the paper the analysis of four different UWS injection frequencies in the three different operating points of diesel engine was shown. The assessments of the system performance was referred to the ammonia distribution at catalyst intake and wall film formation inside the investigated geometry, as these are considered as crucial in such a configuration. The results showed that injection frequency affects both factors on different level depending from the flow conditions. In addition, the wall film crystallization risk was discussed basing on the obtained wall film characteristics.

Modeling and Performance Analysis of Combined-Cycle Based Ship Power Plant

2010 ◽  
Vol 44-47 ◽  
pp. 1240-1245 ◽  
Author(s):  
Hong Zeng ◽  
Xiao Ling Zhao ◽  
Jun Dong Zhang
Keyword(s):  
Diesel Engine ◽  
Power Plant ◽  
Performance Analysis ◽  
Combined Cycle ◽  
Operating Conditions ◽  
Fuel Oil ◽  
Plant Performance ◽  
Oil Consumption ◽  
Combined Cycle Power Plant ◽  
Simulation Performance

For combined-cycle power plant performance analysis, a ship power plant mathematical model is developed, including diesel engine, controllable pitch propeller, exhaust gas boiler, turbine generator and shaft generator models. The simulation performance characteristic curves of diesel engine under various loads are given. Comparison of simulation results and experimental data shows the model can well predict the performance of diesel engine in various operating conditions. The specific fuel oil consumption contours of combined-cycle power plant and the relations between engine operating conditions and steam cycle parameters are given. The influence of diesel engine operating conditions to the overall performance of combined-cycle power plant is discussed.

scholarly journals Eucalyptus Biodiesel as an Alternative to Diesel Fuel: Preparation and Tests on DI Diesel Engine

2012 ◽  
Vol 2012 ◽  
pp. 1-8 ◽  
Author(s):  
Lyes Tarabet ◽  
Khaled Loubar ◽  
Mohand Said Lounici ◽  
Samir Hanchi ◽  
Mohand Tazerout
Keyword(s):  
Diesel Engine ◽  
Diesel Fuel ◽  
Fossil Fuels ◽  
Pressure Rise ◽  
Operating Conditions ◽  
Second Phase ◽  
Oil Consumption ◽  
Unburned Hydrocarbon ◽  
Engine Combustion ◽  
Di Diesel Engine

Nowadays, the increasing oil consumption throughout the world induces crucial economical, security, and environmental problems. As a result, intensive researches are undertaken to find appropriate substitution to fossil fuels. In view of the large amount of eucalyptus trees present in arid areas, we focus in this study on the investigation of using eucalyptus biodiesel as fuel in diesel engine. Eucalyptus oil is converted by transesterification into biodiesel. Eucalyptus biodiesel characterization shows that the physicochemical properties are comparable to those of diesel fuel. In the second phase, a single cylinder air-cooled, DI diesel engine was used to test neat eucalyptus biodiesel and its blends with diesel fuel in various ratios (75, 50, and 25 by v%) at several engine loads. The engine combustion parameters such as peak pressure, rate of pressure rise, and heat release rate are determined. Performances and exhaust emissions are also evaluated at all operating conditions. Results show that neat eucalyptus biodiesel and its blends present significant improvements of carbon monoxide, unburned hydrocarbon, and particulates emissions especially at high loads with equivalent performances to those of diesel fuel. However, the NOx emissions are slightly increased when the biodiesel content is increased in the blend.

The Applied Research of Emulsified Heavy Fuel Oil Used for the Marine Diesel Engine

2013 ◽  
Vol 779-780 ◽  
pp. 469-476 ◽  
Author(s):  
Yong Chao Miao ◽  
Chun Ling Yu ◽  
Bing Hui Wang ◽  
Kai Chen
Keyword(s):  
Diesel Engine ◽  
Cooling Water ◽  
Fuel Oil ◽  
Experimental Result ◽  
Outlet Temperature ◽  
Oil Consumption ◽  
Heavy Fuel Oil ◽  
Marine Fuel ◽  
Exhaust Temperature ◽  
Emulsified Fuel

In order to achieve the application of emulsified fuel oil on the marine,our discussion group developed a set of heavy fuel oil intelligent online emulsifying equipment tested on G6300ZC18B diesel of the ship Ningda "6". And the experimental result shows that, when water mixing ratio ranged from 16% to 24%, emulsification reached good level to apply as marine fuel. When burning emulsified fuel oil, the explosive pressure of diesel engine fluctuated in the range of 1-2Mpa, the exhaust temperature decreased 12°Cand the outlet temperature of cooling water declined slightly, but all the parameters above are in the normal range. The oil consumption decreased by 9.7% and the emission of NOX ,carbon smoke ,and CO reduced by 19.6%,20%,35% respectively.

Diesel Engine Oil Consumption Depending on Piston Ring Motion and Design

1993 ◽  
Author(s):  
Hideki Yoshida ◽  
Masaki Yamada ◽  
Hiroyuki Kobayashi
Keyword(s):  
Diesel Engine ◽  
Piston Ring ◽  
Engine Oil ◽  
Oil Consumption
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