Operation6735−1/A1
Winterthur Gas & Diesel Ltd.
2/ 4
2. Operation
During usual operation conditions, scavenge air flows through the non-return valve (4,
Fig 2) into the pressure space (13). This pressure, and the pressure from the
compression spring (7), keep the piston (6), and thus the waste gate valve, in the
closed position.
20
21
17
16
23
22
319
9
13 4
5
WCH03206
2
1
3
4
8
7
9
12
10
11
13
16
14
15
17
65
18
19
WCH03206
24
1
Fig. 2: Waste Gate Valve and Control Diagram
1 Pressure control valve 13 Pressure space
2 Scavenge air pipe 14 Silencer
3 Non-return valve 15 Valve housing
4 Non-return valve 16 Scavenge air receiver
5 Pressure area (scavenge air pressure) 17 Test connection (scavenge air)
6 Piston 18 Scavenge air pipes
7 Compression spring 19 Solenoid valve
8 Cover 20 Temperature sensor (TE3991C)
9 Adjustment screw (piston stroke) 21 Air suction duct to turbocharger
10 Locknut 22 Scavenge air inlet
11 Vent bore 23 Scavenge air outlet
12 Test connection (valve) 24 Adjustment knob
2015−03
3
Scavenge Air Waste Gate
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