The Noise Problem of Air Cooled Diesel Engines — Measures toward Its Reduction with General Observations and Specific Results

Otto Cordier; Gaston Reyl

doi:10.4271/680405

1968-02-01

The Noise Problem of Air Cooled Diesel Engines — Measures toward Its Reduction with General Observations and Specific Results 680405

Various noise causes are characterized by means of noise sources and noise paths. Engine noise is differentiated from that of the plant. Well-known phenomena and empirical data gained from noise measurements are dealt with briefly. Statistically confirmed interrelations are used to predict engine noise with sufficient accuracy, in particular from the mean piston speed. It is also shown that noise generated by cooling blowers can be accurately estimated from pressure and delivery volume (blower capacity), and that circumferential speed is not an adequate criterion. Typical examples show the effects of various measures on mechanical, combustion, and blower noise.

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The Noise Problem of Air Cooled Diesel Engines — Measures toward Its Reduction with General Observations and Specific Results 680405

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