Diesel Fuel Sulfur and Cylinder Liner Wear of a Heavy-Duty Diesel Engine

1987 ◽  
Author(s):  
E. K. J. Weiss ◽  
B. B. Busenthuer ◽  
H. O. Hardenberg
Keyword(s):  
Diesel Engine ◽  
Diesel Fuel ◽  
Cylinder Liner ◽  
Heavy Duty ◽  
Heavy Duty Diesel Engine ◽  
Heavy Duty Diesel

Tribological assessment of NiCr, Al2O3/TiO2, and Cr3C2/NiCr coatings applied on a cylinder liner of a heavy-duty diesel engine

2020 ◽  
pp. 146808742093016
Author(s):  
Onur Biyiklioğlu ◽  
Mustafa Ertunc Tat
Keyword(s):  
Cast Iron ◽  
Diesel Engine ◽  
Wear Rate ◽  
Gray Cast Iron ◽  
Cylinder Liner ◽  
Gray Cast ◽  
Economic Evaluations ◽  
Heavy Duty ◽  
Heavy Duty Diesel Engine ◽  
Heavy Duty Diesel

Internal combustion engines consume about 90% of fuel refined from crude oil which supplies 30% of the annual global flow of energy. Heavy-duty diesel engines are the primary source of power used in highways, marine, railroads, and power stations. The right coating can improve the tribological properties of cylinder liners and increase the mechanical efficiency of an engine. Also, it can help to extend the maintenance periods, and enhance the reliability of the vehicles. In this research, tribological and economic evaluations were performed for coated and uncoated substrates from a cylinder liner of a heavy-duty diesel engine, aiming to lower friction, wear rate, and maintenance cost. A reciprocating friction test was conducted under dry condition using Wolfram carbide (tungsten carbide) ball applied a 10 N normal load on a ball on disk geometry. The cylinder liner was made of gray cast iron, and the substrates obtained were coated with three different coating materials (Cr3C2/NiCr, NiCr, and Al2O3/TiO2) through the thermal spray and high-velocity oxy-fuel coating process. Tribological evaluations showed that the substrates coded with Al2O3/TiO2 and Cr3C2/NiCr had the lowest friction coefficient and wear rate. The most economical coating was Al2O3/TiO2, being able to supply about 61% lower coefficient of friction and 94% less wear rate relative to the uncoated sample, for the price of one-third of the Cr3C2/NiCr coating and one half of a new gray cast iron cylinder liner.

A Study on Adaptability of the Engine Control Module of an Existing Heavy Duty Diesel Engine to Optimize the Engine Performance With F-T Diesel Fuel

2007 ◽  
Author(s):  
Praveen Kandulapati ◽  
Chuen-Sen Lin ◽  
Dennis Witmer ◽  
Thomas Johnson ◽  
Jack Schmid ◽  
...  
Keyword(s):  
Diesel Engine ◽  
Diesel Fuel ◽  
Load Condition ◽  
Engine Performance ◽  
Injection Timing ◽  
Heavy Duty ◽  
Synthetic Fuels ◽  
Control Module ◽  
Heavy Duty Diesel Engine ◽  
Heavy Duty Diesel

Synthetic fuels produced from non-petroleum based feedstocks can effectively replace the depleting petroleum based conventional fuels while significantly reducing the emissions. The zero sulfur content and the near zero percentage of aromatics in the synthetic fuels make them promising clean fuels to meet the upcoming emissions regulations. However due to their significantly different properties when compared to the conventional fuels; the existing engines must be tested extensively to study their performance with the new fuels. This paper reports a detailed in-cylinder pressure measurement based study made on adaptability of the engine control module (ECM) of a modern heavy duty diesel engine to optimize the engine performance with the F-T diesel fuel. During this study, the F-T and Conventional diesel fuels were tested at different loads and various injection timing changes made with respect to the manufacturer setting. Results from these tests showed that the ECM used significantly different injection timings for the two fuels in the process of optimizing the engine performance. For the same power output the ECM used a 2° advance in the injection timing with respect to the manufacturer setting at the full load and 1° retard at the no load condition. While the injection timings used by the ECM were same for both the fuels at the 50% load condition. However, a necessity for further changes in the control strategies used by the ECM were observed to get the expected advantages with the F-T fuels.

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