WinGD X92DF User Manual

5.2.8 Exhaust valve
The exhaust valve in each cylinder cover releases the exhaust gas of the combustion into the
exhaust gas manifold. The hydraulic oil pressure from the exhaust valve control unit (VCU)
opens the exhaust valve. The pneumatic pressure of the air spring closes the exhaust valve.
Fig 5-14 Exhaust valve (generic)
001
002
003
004
005
006
007
008
009
010
011
012
014
013
Legend
001 Upper housing 008 Cylinder cover
002 Inside piston and outside piston 009 Rotation wing
003 Lower housing 010 Cup spring
004 Air spring piston 011 Air spring
005 Valve spindle 012 Leakage oil collection space
006 Valve cage 013 Hydraulic oil inlet
007 Valve seat 014 Damper
The exhaust valve has the parts that follow:
•
Inside piston and outside piston
The inside piston and the outside piston (002, Figure 5-14) move down when the VCU
applies pressurized oil through the hydraulic oil inlet (013). The valve spindle (005)
moves down and the valve seat (007) is open.
•
Rotation wing
The exhaust gas applies a force on the rotation wing (009). This turns the valve spindle
(005) to balance the heat and mechanical forces and to prevent particles on the exhaust
valve.
X92DF
AA00-2751-00AAA-043A-A
Operation Manual Exhaust valve
Winterthur Gas & Diesel Ltd.
- 172 - Issue 002 2020-08

WinGD X92DF Specifications

General

Brand	WinGD
Model	X92DF
Category	Engine
Language	English