Combustion Characteristics and Performance Increase of an LPG-SI Engine with Liquid Fuel Injection System

2009 ◽  
Author(s):  
Norifumi Mizushima ◽  
Susumu Sato ◽  
Yasuhiro Ogawa ◽  
Toshiro Yamamoto ◽  
Umerujan Sawut ◽  
...  
Keyword(s):  
Liquid Fuel ◽  
Fuel Injection ◽  
Combustion Characteristics ◽  
Injection System ◽  
Fuel Injection System ◽  
Si Engine ◽  
And Performance

Development of a Dual-Fuel Injection System for Lean Premixed Industrial Gas Turbines

1996 ◽  
Author(s):  
Luke H. Cowell ◽  
Amjad Rajput ◽  
Douglas C. Rawlins
Keyword(s):  
Natural Gas ◽  
Gas Turbines ◽  
Liquid Fuel ◽  
Fuel Injection ◽  
Premixed Combustion ◽  
Injection System ◽  
Fuel Injection System ◽  
Load Range ◽  
Lean Premixed Combustion ◽  
Lean Premixed

A fuel injection system for industrial gas turbine engines capable of using natural gas and liquid fuel in dry, lean premixed combustion is under development to significantly reduce NOx and CO emissions. The program has resulted in a design capable of operating on DF#2 over the 80 to 100% engine load range meeting the current TA LUFT regulations of 96 ppm (dry, @ 15% O2) NOx and 78 ppm CO. When operating on natural gas the design meets the guaranteed levels of 25 ppm NOx and 50 ppm CO. The design approach is to apply lean premixed combustion technology to liquid fuel. Both injector designs introduce the majority of the diesel fuel via airblast alomization into a premixing passage where fuel vaporization and air-fuel premixing occur. Secondary fuel injection occurs through a pilot fuel passage which operates in a partially premixed mode. Development is completed through injector modeling, flow visualization, combustion rig testing, and engine testing. The prototype design tested in development engine environments has operated with NOx emissions below 65 ppm and 20 ppm CO at full load. This paper includes a detailed discussion of the injector design and qualification testing completed on this development hardware.

Investigation of Fuel Injection System Cavitation Problems on the MV James R. Barker, MV Mesabi Miner, and MV William J. De Lancey

1985 ◽  
Vol 22 (03) ◽  
pp. 219-237
Author(s):  
Michael G. Parsons ◽  
Richard W. Harkins
Keyword(s):  
Cavitation Erosion ◽  
Fuel Injection ◽  
Injection System ◽  
Fuel Injection System ◽  
Engine Fuel ◽  
Cavitation Damage ◽  
Bulk Carriers ◽  
Performance System ◽  
And Performance ◽  
High Pressure Injection

Cavitation erosion has long been recognized as a potential problem in the components and piping of diesel engine fuel injection systems. Specific cavitation erosion problems have been experienced recently in the fuel injection systems of the Colt-Pielstick PC2 engines of the Great Lakes bulk carriers MV James R. Barker, MV Mesabi Miner, and MV William J. De Lancey. Similar damage has been found in the injection systems of PC2 engines onboard other U.S.-flag vessels. The experience on the subject vessels and the efforts being taken to eliminate or minimize these problems are described. The modeling and methods used in a digital computer simulation of the fuel injection system on these vessels are presented. This simulation is being developed to study the effects of the delivery valve spring characteristics and performance, system pressures, and various system details and potential modifications on the overall performance of the fuel injection system. Special emphasis has been placed upon the factors which can be causing the cavitation damage within the high-pressure injection piping and injector bodies. Example simulation results are presented. The simulation will provide a practical and economical way to evaluate potential modifications.

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