Exhaust system
9
Exhaust system Aqua-lift silencer, wet exhaust line in motor boats
The figure shows an example of an engine with the
Aqua-lift silencer system. The silencer should have
sufficient volume to suit the engine power and space
available. The
inner diameters of the exhaust hoses
(
∅
A
and
∅
B
) should be chosen to suit the engine
power, to give low exhaust backpressure.
See table on in this chapter under section "Recom-
mended hose diameters" for dimensioning hoses for
and after the silencer.
The minimum height between the lower edge of the
silencer exhaust outlet and the water line is at least
350 mm (14"). See figure above.
∅
A
∅
A
∅
B
∅
B
Min.
350 mm
(4")
∅
A
∅
B
Silencers
There are various types of silencers depending on the type of installation. Two very common types are:
•
Aqua-lift silencers
•
In-line silencers
Aqua-lift silencers, principle outlines of various types
Single room
Alt. inlet
Twin room
Alt. inlet
Inlet
Inlet
Summary of Contents for D11 series
Page 1: ...Marine Propulsion Diesel Engines Installation 1 1 D E D5 D16 series ...
Page 2: ......
Page 208: ...206 References to Service Bulletins Group No Date Concerns ...
Page 209: ...207 Notes ...
Page 210: ...208 Notes ...
Page 212: ...7748655 English 11 2007 ...