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Pump motor test rig

The Problem

A pump motor test rig for marine diesel fuel injectors generated an operator noise level of 100dB at maximum load. The noise level at a second operator position was 96dB and 94dB in the remainder of the workshop area.

The Solution

The Results

These measures reduced the noise at the closest operator position by 9dB under the worse conditions, as shown in the graph. The reduction at the second operator position and in the remainder of the workshop was 7dB.

pump test rig noise reduction graph

Pump motor test rig noise reduction graph

The Costs

The total cost of implementing the modifications was £1800 (1981 prices).

Information supplied by

Industrial Noise and Vibration Centre Ltd.

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Updated 2010-03-02