Supercharging of a Large Two-Cycle, Loop-Scavenged Diesel Engine

1961 ◽  
Vol 83 (2) ◽  
pp. 206-213
Author(s):  
A. J. Henriksen
Keyword(s):  
Diesel Engine ◽  
Field Test ◽  
Theoretical Approach ◽  
Power Output ◽  
Thermal Efficiency ◽  
Test Results ◽  
Thermodynamic Work ◽  
Supercharged Engine

The paper covers the mechanical and thermodynamic aspects of increasing the power output and thermal efficiency of an existing nonsupercharged two-cycle, loop-scavenged diesel engine through supercharging. The power output was increased by 40 per cent and the thermal efficiency by approximately 4 per cent. Much of the thermodynamic work was done on a UNIVAC computer and a brief description of the theoretical approach and results appear in this paper. Field test results from a Nordberg two-cycle, 21 1/2-in. × 31-in. supercharged engine are also included in this paper.

Development, Installation, and Operating Results of a Steam Injection System (STIG™) in a General Electric LM5000 Gas Generator

1987 ◽  
Vol 109 (3) ◽  
pp. 257-262 ◽  
Author(s):  
J. B. Burnham ◽  
M. H. Giuliani ◽  
D. J. Moeller
Keyword(s):  
Natural Gas ◽  
Field Test ◽  
Power Output ◽  
Steam Injection ◽  
Supply System ◽  
Full Scale ◽  
Injection System ◽  
Test Results ◽  
Gas Generator ◽  
Scale Field

This paper describes the first full-scale field test of a steam injection system for a natural-gas-fired G.E. LM5000 gas generator for the purpose of: (a) decreased exhaust emissions, (b) increased power output, and (c) improved efficiency. It discusses the steam supply system, engine features, test results, and plant economics for steam injection into the combustor and compressor discharge sections of the LM5000 at rates up to 65,000 lb/hr (29,510 kg/hr).

scholarly journals Performance and emissions of a single cylinder diesel engine operating with rapeseed oil and jp-8 fuel blends

2015 ◽  
Vol 162 (3) ◽  
pp. 13-18
Author(s):  
Gvidonas Labeckas ◽  
Irena Kanapkienė
Keyword(s):  
Diesel Engine ◽  
Fuel Consumption ◽  
Thermal Efficiency ◽  
Rapeseed Oil ◽  
Jet Fuel ◽  
Brake Specific Fuel Consumption ◽  
Test Results ◽  
Brake Thermal Efficiency ◽  
Engine Load ◽  
Fuel Blends

The article presents experimental test results of a DI single-cylinder, air-cooled diesel engine FL 511 operating with the normal (class 2) diesel fuel (DF), rapeseed oil (RO) and its 10%, 20% and 30% (v/v) blends with aviation-turbine fuel JP-8 (NATO code F-34). The purpose of the research was to analyse the effects of using various rapeseed oil and jet fuel RO90, RO80 and RO70 blends on brake specific fuel consumption, brake thermal efficiency, emissions and smoke of the exhaust. The test results of engine operation with various rapeseed oil and jet fuel blends compared with the respective parameters obtained when operating with neat rapeseed oil and those a straight diesel develops at full (100%) engine load and maximum brake torque speed of 2000 rpm. The research results showed that jet fuel added to rapeseed oil allows to decrease the value of kinematic viscosity making such blends suitable for the diesel engines. Using of rapeseed oil and jet fuel blends proved themselves as an effective measure to maintain fuel-efficient performance of a DI diesel engine. The brake specific fuel consumption decreased by about 6.1% (313.4 g/kW·h) and brake thermal efficiency increase by nearly 1.0% (0.296) compared with the respective values a fully (100%) loaded engine fuelled with pure RO at the same test conditions. The maximum NOx emission was up to 13.7% higher, but the CO emissions and smoke opacity of the exhaust 50.0% and 3.4% lower, respectively, for the engine powered with biofuel blend RO70 compared with those values produced by the combustion of neat rapeseed oil at full (100%) engine load and speed of 2000 rpm.

Design and Theoretical Analysis of Acoustic Enclosure for G12V190 Type Diesel Engine

2011 ◽  
Vol 338 ◽  
pp. 392-395
Author(s):  
Jin Sheng Ma ◽  
Na Na Dai ◽  
Yang Bo ◽  
Ling Zhou ◽  
Zi Feng Liu ◽  
...  
Keyword(s):  
Diesel Engine ◽  
Theoretical Analysis ◽  
Theoretical Calculation ◽  
Noise Reduction ◽  
Field Test ◽  
Test Results ◽  
Reduction Effect

The existing acoustic cover is improved to reduce the noise of G12V190 type diesel engine. A panel of shutters structure is designed and simulated with SYSNOISE. The structure of acoustic enclosure is also been designed according to the structure of the diesel engine. Theoretical calculation shows that the improved insulation cover has not only a good noise reduction effect, but also has been greatly improved in terms of cooling ventilation, the field test results also shows that this section of acoustic enclosure can reduce the noise about 10dB.

scholarly journals Development, Installation and Operating Results of a Steam Injection System (STIG™) in a General Electric LM5000 Gas Generator

1986 ◽  
Author(s):  
James B. Burnham ◽  
Michael H. Giuliani ◽  
David J. Moeller
Keyword(s):  
Natural Gas ◽  
Field Test ◽  
Power Output ◽  
Steam Injection ◽  
Supply System ◽  
Full Scale ◽  
Injection System ◽  
Test Results ◽  
Gas Generator ◽  
Scale Field

This paper describes the first full scale field test of a steam injection system for a natural gas fired G.E. LM5000 gas generator for the purpose of: (A) decreased exhaust emissions, (B) increased power output, and (C) improved efficiency. It discusses the steam supply system, engine features, test results and plant economics for steam injection into the combustor and compressor discharge sections of the LM5000 at rates up to 65,000 LB/HR (29,510 KG/HR).

Effects of Heat Transfer and Friction on the Performance of a Miller Cycle Diesel Engine with Considerations of Variable Specific Heats of the Working Fluid

2013 ◽  
Vol 311 ◽  
pp. 211-216
Author(s):  
Jiann Chang Lin ◽  
Shuhn Shyurng Hou
Keyword(s):  
Heat Transfer ◽  
Diesel Engine ◽  
Power Output ◽  
Thermal Efficiency ◽  
Friction Loss ◽  
Working Fluid ◽  
Miller Cycle ◽  
Temperature Dependent ◽  
Specific Heats ◽  
Negative Effect

The objective of this study is to analyze the effects of friction and heat transfer with considerations of variable specific heats of working fluid on the performance of a Miller cycle Diesel engine. The variations in power output and thermal efficiency with compression ratio, and the relations between the power output and the thermal efficiency of the Miller cycle Diesel engine are presented. The results show that the power output as well as the efficiency where maximum power output occurs will decrease with the increase of heat loss. The temperature-dependent specific heats of working fluid have a significant influence on the performance. The power output and the working range of the Miller cycle Diesel engine increase with the increase of specific heats of working fluid, while, the efficiency decreases with the increase of specific heats of working fluid. The influence of the parameter b related to the friction loss has a negative effect on the performance. Therefore, the power output and efficiency of the cycle decrease with increasing b. Note that the effects of heat transfer with considerations of variable specific heats of working fluid and friction loss on the performance are significant and should be considered in practice cycle analysis.

Long Term Field Test Results of Experimental EPDM and PUF Roofing

1990 ◽  
Author(s):  
David M. Bailey ◽  
Stuart D. Foltz ◽  
Myer J. Rosenfield
Keyword(s):  
Field Test ◽  
Test Results ◽  
Term Field

scholarly journals Effect of algae fuel addition on fuel consumption and thermal efficiency of single cylinder diesel engine

2021 ◽  
Vol 1068 (1) ◽  
pp. 012016
Author(s):  
Hazim Sharudin ◽  
N.A. Rahim ◽  
N.I. Ismail ◽  
Sharzali Che Mat ◽  
Nik Rosli Abdullah ◽  
...  
Keyword(s):  
Diesel Engine ◽  
Fuel Consumption ◽  
Thermal Efficiency ◽  
Single Cylinder

scholarly journals Performance Analysis and Optimization for Irreversible Combined Carnot Heat Engine Working with Ideal Quantum Gases

Entropy ◽  
2021 ◽  
Vol 23 (5) ◽  
pp. 536
Author(s):  
Lingen Chen ◽  
Zewei Meng ◽  
Yanlin Ge ◽  
Feng Wu
Keyword(s):  
Power Output ◽  
Thermal Efficiency ◽  
Combined Cycle ◽  
Quantum Gases ◽  
Carnot Cycle ◽  
Leakage Loss ◽  
Optimal Power ◽  
Heat Leakage ◽  
Working Medium ◽  
Ideal Quantum

An irreversible combined Carnot cycle model using ideal quantum gases as a working medium was studied by using finite-time thermodynamics. The combined cycle consisted of two Carnot sub-cycles in a cascade mode. Considering thermal resistance, internal irreversibility, and heat leakage losses, the power output and thermal efficiency of the irreversible combined Carnot cycle were derived by utilizing the quantum gas state equation. The temperature effect of the working medium on power output and thermal efficiency is analyzed by numerical method, the optimal relationship between power output and thermal efficiency is solved by the Euler-Lagrange equation, and the effects of different working mediums on the optimal power and thermal efficiency performance are also focused. The results show that there is a set of working medium temperatures that makes the power output of the combined cycle be maximum. When there is no heat leakage loss in the combined cycle, all the characteristic curves of optimal power versus thermal efficiency are parabolic-like ones, and the internal irreversibility makes both power output and efficiency decrease. When there is heat leakage loss in the combined cycle, all the characteristic curves of optimal power versus thermal efficiency are loop-shaped ones, and the heat leakage loss only affects the thermal efficiency of the combined Carnot cycle. Comparing the power output of combined heat engines with four types of working mediums, the two-stage combined Carnot cycle using ideal Fermi-Bose gas as working medium obtains the highest power output.

Sign in / Sign up

Export Citation Format

Share Document