Liquid Spray Data from an Optical Medium-Speed Diesel Engine and Its Comparison with CFD

2009 ◽  
Author(s):  
Ossi Kaario ◽  
Aki Tilli ◽  
Harri Hillamo ◽  
Teemu Sarjovaara ◽  
Ville Vuorinen ◽  
...  
Keyword(s):  
Diesel Engine ◽  
Optical Medium ◽  
Medium Speed ◽  
Liquid Spray

scholarly journals Matching simulated and measured eigen frequencies of medium speed diesel engine

2017 ◽  
Vol 50 (3) ◽  
pp. 206-210 ◽  
Author(s):  
Diana Burdiel ◽  
Carlo Pestelli ◽  
Moreno Almerigogna ◽  
Alan Pettirosso ◽  
Heikki Mikonaho ◽  
...  
Keyword(s):  
Diesel Engine ◽  
Dynamic Behavior ◽  
Engine Design ◽  
Medium Speed ◽  
Eigen Frequencies

The aim of this article is to present a method to predict the dynamic behavior of a new engine design on the basis of a correlation between simulations and measurements of a similar engine.

Mechanical Validation: An Integral Part of Medium Speed Diesel Engine Development

2003 ◽  
Author(s):  
Klaus Lierz ◽  
Michael Franke ◽  
Jeffrey LeBegue
Keyword(s):  
Diesel Engine ◽  
Mechanical Testing ◽  
Design Stage ◽  
Test Program ◽  
Experimental Development ◽  
Testing Program ◽  
Medium Speed ◽  
Engine Testing ◽  
Engine Development

A comprehensive mechanical testing program was part of the development of the Diesel engine for the GEVO locomotive family. The test program has been developed under consideration of the demands of a railroad application. The program included both fired engine and component rig testing. Component rig tests were used to validate major components early in the design stage. Engine testing included measurements to validate the CAE models and allow detailed experimental development of components and subsystems. Several endurance runs have proven the reliability of the new engine.

Diesel Engine Design Aspects for Heavy Fuel Operation

1985 ◽  
Vol 199 (4) ◽  
pp. 245-253 ◽  
Author(s):  
C-E Rosgren
Keyword(s):  
Diesel Engine ◽  
State Of The Art ◽  
The State ◽  
Structural Safety ◽  
Engine Design ◽  
Medium Speed ◽  
Efficient Combustion ◽  
Critical Components ◽  
Engine Development

Describes the state-of-the-art in medium-speed diesel engine development, with the emphasis on heavy fuel operation. Outlines the requirements for efficient combustion as well as achievements in structural safety of critical components.

Effects of low-level water addition on spray, combustion and emission characteristics of a medium speed diesel engine fueled with biodiesel fuel

Fuel ◽  
2019 ◽  
Vol 239 ◽  
pp. 245-262 ◽  
Author(s):  
Zhiqing Zhang ◽  
Jiaqiang E ◽  
Jingwei Chen ◽  
Hao Zhu ◽  
Xiaohuan Zhao ◽  
...  
Keyword(s):  
Diesel Engine ◽  
Spray Combustion ◽  
Biodiesel Fuel ◽  
Emission Characteristics ◽  
Water Addition ◽  
Low Level ◽  
Medium Speed

Progress on the Investigation of Coal-Water Slurry Fuel Combustion in a Medium-Speed Diesel Engine: Part 5—Combustion Studies

1992 ◽  
Vol 114 (3) ◽  
pp. 515-521 ◽  
Author(s):  
B. D. Hsu ◽  
G. L. Confer ◽  
Z. J. Shen
Keyword(s):  
Diesel Engine ◽  
Fuel Injection ◽  
Injection Pressure ◽  
Combustion Efficiency ◽  
Fuel Combustion ◽  
Injection Timing ◽  
Water Slurry ◽  
Medium Speed ◽  
Engine Part ◽  
Coal Water Slurry

In the GE 7FDL single-cylinder research diesel engine, coal-water slurry (CWS) fuel combustion optimization studies were conducted using electronically controlled CWS and pilot accumulator injectors. The most important performance parameters of peak firing pressure, combustion efficiency (coal burnout), and specific fuel comsumption were evaluated in relationship to CWS and pilot injection timing, CWS injector hole size, shape, and number, CWS fuel injection spray angles and injection pressure. Heat release diagrams, as well as exhaust samples (gaseous and particulate), were analyzed for each case. Interesting effects of fuel spray impingement and CWS fuel “Delayed Ignition” were observed. With the engine operating at 2.0 MPa IMEP and 1050 rpm, it was able to obtain over 99.5 percent combustion efficiency while holding the cylinder firing pressure below 17 MPa and thermal efficiency equivalent to diesel fuel operation.

Evaluation of Biodiesel Blends in a Single-Cylinder Medium-Speed Diesel Engine

2005 ◽  
Author(s):  
Fan Su ◽  
Malcolm Payne ◽  
Manuel Vazquez ◽  
Peter Eggleton ◽  
Alex Vincent
Keyword(s):  
Diesel Engine ◽  
Fuel Economy ◽  
Engine Performance ◽  
Injection Pressure ◽  
Frying Oil ◽  
Nox Emissions ◽  
Biodiesel Blends ◽  
Single Cylinder ◽  
Additional Information ◽  
Medium Speed

Biodiesel blends were prepared by mixing low sulphur #2 diesel and biodiesel of two origins (canola and frying oil) at two different concentrations (5% and 20%). They were tested in a single-cylinder four-stroke medium-speed diesel engine under three engine modes representing idle, about 50% power and full load conditions. Engine performance and emissions data obtained with the blends were compared to that of engine running with the #2 diesel. Results indicated that the 5% blends could maintain engine power and fuel economy. Frying oil based B5 provided more significant reductions on CO, THC and PM emissions and increments on NOx emissions as compared with that of the canola B5 fuel. The 20% blends reduce engine CO, PM and smoke emissions, but increase NOx emissions by up to approximately 8%. Engine cylinder pressure and injection pressure data was also collected to provide additional information for evaluation of fuel economy and emissions benefits of using the blends.

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