5.8
Group 8 - Pipes
5.8.1
Exhaust waste gate
The optional exhaust waste gate is a by-pass pipe to the turbine (006,
turbochargers. The valve (007) in this pipe controls the flow of exhaust gas through the
turbines (006). This controls the compressor (002) of the turbochargers and thus the supply of
scavenge air to the scavenge air receiver (003).
During usual operation the valve (007) is closed and thus all the exhaust gas flows through the
turbines (006).
Fig 5-37
Exhaust waste gate (generic)
001
002
003
004
005
006
007
008
Legend
001
Air inlet
005
Exhaust gas manifold
002
Compressor
006
Turbine
003
Scavenge air receiver
007
Valve
004
Engine
008
Exhaust gas outlet
If the turbochargers deliver too much scavenge air pressure, the ECS opens the valve (007). If
the valve (007) is controllable, the ECS opens it as much as necessary. This decreases the
performance of the turbochargers and thus the pressure of the scavenge air.
If the valve (007) is blocked in the open position, you have to close the exhaust waste gate, refer
to section
10.16 Temporary isolate the exhaust waste gate
X72-B
AA00-8135-00AAA-043A-A
Operation Manual
Exhaust waste gate
Winterthur Gas & Diesel Ltd.
- 218 -
Issue 003 2021-12
