scholarly journals Develop the dual fuel conversion system for high output, medium speed diesel engines. Quarterly report number 5, November 1997--January 1998

1998 ◽  
Author(s):  
Keyword(s):  
Diesel Engines ◽  
Dual Fuel ◽  
Fuel Conversion ◽  
Medium Speed ◽  
Conversion System ◽  
High Output

Pielstick Experience With Dual-Fuel Engines and Cogeneration

1988 ◽  
Vol 110 (3) ◽  
pp. 349-355 ◽  
Author(s):  
G. Grosshans ◽  
M. Litzler
Keyword(s):  
Energy Consumption ◽  
Diesel Engines ◽  
Primary Energy ◽  
Dual Fuel ◽  
Gas Mixture ◽  
The West ◽  
Medium Speed ◽  
Dual Fuel Engines ◽  
Textile Factory ◽  
Solvent Vapors

SEMT PIELSTICK has developed since 1971 a range of medium-speed dual-fuel engines with relatively high air-fuel ratios, which enable ratings similar to diesel engines. The PC 2.3 DF.C of 1971 was developed up to 535 hp/cyl. and was followed by the PC 2.5 DF.C of 600 hp/cyl. This later engine was applied in the West German cogeneration plan of a textile factory, giving more than 82 percent use of primary energy. This engine may also be used as a pollution-abating machine, because it traps toxic solvent vapors, which are burned in the engine, reducing furthermore the apparent (paid) energy consumption. Thanks to the lean air-gas mixture, the very severe West German limits on pollution could be fulfilled without any extra depolluting device. The newest development is the PA 5 DF engine of the same philosophy, which will cover the 1000 to 3600 kW range.

Techniques Used in Achieving a High Specific Airflow for High-Output, Medium-Speed Diesel Engines

1967 ◽  
Vol 89 (2) ◽  
pp. 265-275 ◽  
Author(s):  
J. A. Pope
Keyword(s):  
Diesel Engines ◽  
Cylinder Head ◽  
Exhaust Valve ◽  
Test Cylinder ◽  
Cam Design ◽  
Medium Speed ◽  
Flow Test ◽  
Valve Opening ◽  
High Output

This paper discusses the factors which influence the airflow through the cylinder heads, and valves, on high-output, medium-speed diesel engines and the techniques used to achieve a high specific airflow. Descriptions of the methods used to flow test cylinder head ports are given, together with details of polynomial cam design. The results of some tests with a variable-timing camshaft, showing the effect of advance of exhaust-valve opening point, are included.

Effect of H2 and CO Content in Syngas on the Performance and Emission of Syngas-Diesel Dual Fuel Engine - A Review

2014 ◽  
Vol 699 ◽  
pp. 648-653 ◽  
Author(s):  
Bahaaddein K.M. Mahgoub ◽  
Suhaimi Hassan ◽  
Shaharin Anwar Sulaiman
Keyword(s):  
Carbon Monoxide ◽  
Diesel Engines ◽  
Combustion Process ◽  
Exhaust Emission ◽  
Dual Fuel ◽  
Pure Liquid ◽  
Compression Ignition ◽  
Performance And Emission ◽  
Combustion Duration ◽  
Combustible Gases

In this review, a series of research papers on the effects of hydrogen and carbon monoxide content in syngas composition on the performance and exhaust emission of compression ignition diesel engines, were compiled. Generally, the use of syngas in compression ignition (CI) diesel engine leads to reduce power output due to lower heating value when compared to pure liquid diesel mode. Therefore, variation in syngas composition, especially hydrogen and carbon monoxide (Combustible gases), is suggested to know the appropriate syngas composition. Furthermore, the simulated model of syngas will help to further explore the detailed effects of engine parameters on the combustion process including the ignition delay, combustion duration, heat release rate and combustion phasing. This will also contribute towards the efforts of improvement in performance and reduction in pollutants’ emissions from CI diesel engines running on syngas at dual fuel mode. Generally, the database of syngas composition is not fully developed and there is still room to find the optimum H2 and CO ratio for performance, emission and diesel displacement of CI diesel engines.

Simulation Research on Combustion Process in a Natural Gas-Diesel Dual-Fuel Marine Engine

2014 ◽  
Vol 525 ◽  
pp. 227-231 ◽  
Author(s):  
Min Xiao ◽  
Chun Long Feng
Keyword(s):  
Natural Gas ◽  
Total Energy ◽  
Combustion Process ◽  
Power Reduction ◽  
Dual Fuel ◽  
Injection Timing ◽  
Simulation Research ◽  
Injection Duration ◽  
Medium Speed ◽  
The Right

In order to solve the problem of Diesel natural gas dual fuel engine, such as power reduction, low charging efficiency, the conception of diesel engine fueled with pilot-ignited directly-injected liquefied natural gas is put forward. On the basis of this theory, a medium speed diesel of the marine is refitted into dual fuel engine, in order to keep original power, decrease the temperature of combustion and reduce emission. The LNG injection timing, duration of LNG injection and the different ratios the pilot diesel to total energy are studied the method of AVL FIRE software. Conclusions are as follows: When the different ratios pilot diesel to total energy is 0.5%, the engine can not work; Delaying the LNG injection timing, shortening the LNG injection duration and choose the right ratios pilot diesel to total energy can reach the indicated power of original machine, and the NOx emissions level will be greatly reduced.

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