Operation
0740−1/A1
Winterthur Gas & Diesel Ltd.
1/ 1
Scavenge Air and Starting Air
1. Scavenge Air
The turbocharger compresses the air from the engine room or from outside for the
scavenge air and air for the cylinders, (see 6500−1 Turbocharging).
The air must be as clean as possible to keep the wear of cylinder liner, piston rings,
turbocharger compressor etc. to a minimum. Silencers are installed to the suction
part. The silencers have filter mats in them, which help to keep the air clean.
The filter mats must be serviced and/or cleaned regularly (see the turbocharger
manual).
2. Starting Air / Control Air
2.1 Starting Air
Compressors pressurize the air in the starting air bottles to a maximum of 30 bar. The
starting air from the starting air bottles flows directly into the cylinder. This air must be
clean and dry. The starting air bottles must be drained regularly to remove
condensation (see 8018−1 Starting Air Diagram).
2.2 Control Air
The control air and air spring air supplied from the shipboard system must be clean
and dry.
If no air comes from the control air board supply, compressed air at decreased
pressure is available from the starting air supply (see 4003−2 Control Diagram).
Operating Media
2014
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