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Conference Papers Year : 2012

Diesel knock noise from combustion phenomenon to perceived signals

Olivier Sauvage
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Alexandre Laurac
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Marie-Céline Bezat
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Vincent Roussarie
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Philippe Guillemain
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Combustion noise still remains a major concern when designing engines for vehicles passenger comfort. Among most efficient strategies for reducing Diesel knock are modifications of engine parameters used for controlling combustion processes. This work aims at giving guidelines when controlling these processes to improve customers’ combustion noise perception. A methodology is described, which establish a relation between the engine tuning parameters, directly linked to cylinder pressure evolutions, and their effects on perception. We use cyclic Wiener filters allowing realistic overall Diesel noise re-synthesises from cylinder pressure signals. Cylinder pressures are split into elementary components, leading to different types (and patterns) of physically admissible modifications. A perceptive test is then conducted to establish a perceptive space of Diesel combustion noise based on some different pressure cylinder noticeable patterns. An issue is a better understanding of the subjective effects, particularly rhythmic ones, produced by such pulse trains.
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hal-00810979 , version 1 (23-04-2012)


  • HAL Id : hal-00810979 , version 1


Olivier Sauvage, Alexandre Laurac, Marie-Céline Bezat, Vincent Roussarie, Philippe Guillemain. Diesel knock noise from combustion phenomenon to perceived signals. Acoustics 2012, Apr 2012, Nantes, France. ⟨hal-00810979⟩
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