Lean Six Sigma Methodology and Its Application in the Manufacturing Industry – A Review
Folorunso Olanrewaju,
Austin Chima Uzorh,
Innocent Nnanna
Issue:
Volume 4, Issue 3, May 2019
Pages:
40-44
Received:
22 June 2019
Accepted:
22 July 2019
Published:
11 October 2019
Abstract: This paper reviewed and analyzed literature on lean six sigma (LSS) methodology tools and its applications in the manufacturing industries. Lean manufacturing deals with the process improvement and effective productivity of an organization through elimination of waste. Six sigma on the other hand, is a concept of improving plan that is capable to reduce process/operation variation of an organization. The lean-six-sigma has been practiced mostly in the developed countries along organization of time, but its importance both in the manufacturing processes and management activities cannot be neglected. The aim of this paper is to highlight the benefits of these concepts and how the two principles are merged in industries to improve productivity effectively, reduce waste, and increase the product quality level as well as ensure customer/stakeholder satisfaction. The paper also discussion various lean six sigma methodology tools adopted by small and medium scale industries to achieve improved product quality level and process or operation efficiency. This lean-six-sigma can be implemented or applied to any kind of industry for better productivity through continuous improvement on the business activities. This study would help any kind of manufacturing industry to find a solution on how to compete favorably in a competitive business environment with a dynamic market system and also equally be used by other researchers to enhance their literature.
Abstract: This paper reviewed and analyzed literature on lean six sigma (LSS) methodology tools and its applications in the manufacturing industries. Lean manufacturing deals with the process improvement and effective productivity of an organization through elimination of waste. Six sigma on the other hand, is a concept of improving plan that is capable to r...
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Numerical Simulation of Pressure Fluctuation in High-pressure Common-rail Fuel Injection System
Yu Du,
Cheng Qian,
Yue Zhao,
Yukang Wang,
Peng Zhao
Issue:
Volume 4, Issue 3, May 2019
Pages:
45-51
Received:
17 September 2019
Accepted:
28 September 2019
Published:
12 October 2019
Abstract: In the past several years, the global diesel engine technology has made significant breakthroughs. The diesel engine has a good economy and power. In 20 years or so, the number of diesel vehicles will exceed the trend of gasoline engines. Diesel engine technology is also developing towards low pollution, low fuel consumption, and high power. To improve the performance of diesel engines, the key is to improve the conversion rate of internal energy to mechanical energy and combustion degrees. In the fuel injection system of diesel engines, a high-pressure common-rail with a large volume is often added between the plunger high-pressure fuel pump and the injector. Its function is to save fuel from the plunger fuel pump, to suppress the fluctuation of oil pressure, and to output high-pressure fuel by adjusting the characteristic parameters of the injector. Firstly, the physical model and mathematical model have been established, including the plunger pump, the high-pressure common rail, and the injector. After that, we use the modified Euler method to solve ordinary differential equations by MATLAB programming. Finally, the Optimized working strategies of plunger pump to inject diesel oil into high-pressure common rail have been obtained. In this high-pressure common rail system, cam of the plunger pump spin 1225.67 times a minute, and pressure relief valve is opened automatically when the pressure in high-pressure common-rail is over 103 MPa, so that the pressure in high-pressure common-rail is approximately stable at 100 MPa, and the fluctuation is small.
Abstract: In the past several years, the global diesel engine technology has made significant breakthroughs. The diesel engine has a good economy and power. In 20 years or so, the number of diesel vehicles will exceed the trend of gasoline engines. Diesel engine technology is also developing towards low pollution, low fuel consumption, and high power. To imp...
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