Noise Reduction in Ship Engine Room by Optimisation of Muffler Design

Muffler Design for Automotive Exhaust Noise Attenuation - A Review

In these review paper different types of mufflers and design of exhaust system belonging engine has been studied. The object of this study is decide muffler design which one reduces a large amount of noise level and back pressure of engine. In designing, there is different parameter which has to taken in to the consideration. These parameters affect the muffler efficiency.

Optimal Muffler Design

CONSIDERATION OF DESIGN FOR PRODUCTION PRINCIPLES IN SHIP HULL DESIGN

In designing for ship production, the production method should be considered and it’s possible to reduce the manufacturing cost in designing procedure. A review of background of ship design that had minimized production costs, shows the principles and problems of these methods. Modern designing methods for manufacturing, considers hydrodynamic efficiency and less manufacturing cost. Quant...

Noise reduction of ship-radiated noise based on noise-assisted bivariate empirical mode decomposition

Underwater acoustic signal has the non-linear and non-stationary characteristics. Aiming at the issue on noise reduction of underwater acoustic signal, an adaptive noise reduction method of ship-radiated noise based on noiseassisted bivariate empirical mode decomposition is proposed. Firstly, a two-dimensional complex data is built by using one-dimensional real signal and adding Gaussian white ...

Experimental study of combustion noise level in LTC engine

In recent years, promising methods have been used to increase thermal efficiency, reduce nitrogen oxide and particle matter, which can be described as an example of an ethanol fuelled HCCI engine. But despite the many benefits of these engines, they continue to face problems such as increasing carbon monoxide production, unburned hydrocarbon, and producing combustion noise at high loads. In thi...