Proceedings ArticleDOI
Design Aspects of Low-Noise Diesel Engines
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TLDR
In this paper, a diesel engine with a single bearing beam and isolated panels and damped nonload carrying surfaces was used to reduce the noise level of a V-8 engine.Abstract:
Methods of reducing the noise level of a diesel engine include the suppression of the major modes of block vibration and treatment of the external surfaces. Design methods enable the frequencies and noise levels of these modes to be calculated for a conventionally designed engine. The important modes of vibration, the noise signature and the effect of block modifications of a standard production V-8 engine were found by experiments. These provided the basis for the design of an experimental low-noise engine. Design features include a stiffer block, removal of the bottom part of the crankcase skirt, the addition of a single bearing beam, and the use of isolated panels and damped surfaces. The noise reduction obtained was 9 dBA. Most of this is due to the use of isolated and damped nonload carrying surfaces.read more
Citations
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Journal ArticleDOI
Analysis of pollutant formation and control and fuel economy in diesel engines
TL;DR: In this paper, a comparison between the characteristics of the diesel and other automobile engines is presented, showing that the high thermal efficiency of diesel engines is mainly due to the relatively high compression ratio required to start the autoignition process, the lower pumping losses as a result of the absence of the throttle valve, and the overall lean mixture required to achieve an efficient heterogeneous combustion process.
Journal ArticleDOI
A review of low noise diesel engine design at I.S.V.R.
E.C. Grover,N. Lalor +1 more
TL;DR: In this article, the basic relation between the exciting forces, the vibration characteristics and the emitted noise of a diesel engine is described and two such engines, both of which gave overall noise reductions of about 10 dB, are described in detail.
Journal ArticleDOI
Noise control of engine driven portable generator set
TL;DR: In this paper, the main sources of noise in a noisy portable I. C. engine driven generator set have been identified, and a partial enclosure was designed for the generator set.
Journal ArticleDOI
Analysis and treatment of diesel-engine noise
TL;DR: In this article, a diesel engine noise reduction can be achieved by lowering any of the forcing functions, couplings or responses, and complete or partial shielding of external surface is also effective.
References
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Journal ArticleDOI
Effect of Engine Structure on Noise of Diesel Engines
TL;DR: In this paper, a number of structure research engines using two basically different principles for controlling vibration of the outer surfaces, namely, control by damping and control by stiffness, are presented.
Proceedings ArticleDOI
Noise of Automotive Diesel Engines: Its Causes and Reduction
A. E. W. Austen,T. Priede +1 more