12. Cylinder Head with Valves
12.1
General description
Data and dimensions
Material:
nodular cast iron
Weight: 430
kg
Water space
- test pressure: 10 bar
Starting air space
- test pressure: 60 bar
The cylinder heads are cast of nodular cast iron. Each head
includes two inlet valves, two exhaust valves, a centrally located
injection valve and an indicator valve. The cylinder heads are
individually tightened to the cylinder liner with four studs and
hydraulically tightened nuts. A metallic gasket is sealing be-
tween the cylinder liner and the cylinder head. The combustion
air, exhaust gas and water channels are connected to a common
multi-duct, which is connected to the cylinder head by six screws.
The four screw and box-cone design is a traditional and well
proven design for cylinder heads. The design eases maintenance
and allows the design of large channels for combustion air and
exhaust gases. In a heavy fuel engine the correct material tem-
peratures are a crucial factor to ensure long lifetime of the
components being in contact with combustion gases. Efficient
cooling and a rigid design is best achieved with the “double deck”
design in which the flame plate is relatively thin and the mechani-
cal load is transferred to the strong intermediate deck. The most
sensitive areas of the cylinder head are cooled by drilled cooling
channels optimized to distribute the water flow evenly around
valves and the centrally located fuel injector.
The injection valve
is described in chapter 16.
Cylinder head assembly
1. Bearing bracket
2. Rocker arm
3. Yoke for valves
4. Yoke for injection valve
5. Cylinder head
6. Rotocap
7. Screws for connection
piece
8. Exhaust valve seat
9. Exhaust valve
10. Inlet valve
11. Inlet valve seat
12. Indicator valve
13. Temperature sensor
1
2
3
4
5
6
7
8
9
10
11
12
13
Fig 12-1
4012019701
32-200646-01
Cylinder Head with Valves
12
WÄRTSILÄ 32
12 - 1
Содержание VASA 6L32
Страница 4: ......
Страница 18: ...Appendix B Welding Precautions 200640 00 6...
Страница 26: ...01 Main Data Operating Data and General Design 32 200634 01 01 8 W RTSIL 32...
Страница 60: ...Appendix A Environmental Hazards 200507 02A 10...
Страница 68: ...Page 7 7 Document No 4V92A0645 Rev j...
Страница 84: ...03 Start Stop and Operation 32 200402 04 03 12 W RTSIL 32...
Страница 98: ...04 Maintenance Schedule 32 200623 01 04 14 W RTSIL 32...
Страница 154: ...07 Tightening Torques and Use of Hydraulic Tools 32 200643 01 07 30 W RTSIL 32...
Страница 162: ...08 Operating Troubles Emergency Operation 32 200402 01 08 8 W RTSIL 32...
Страница 164: ...Specific Installation Data 2005 01 09 2...
Страница 178: ...10 Engine Block with Bearings Oil Sump and Cylinder Liner 32 200150 10 14 W RTSIL 32 34SG...
Страница 216: ...Appendix A Testing of cylinder tightness 32 200142 A 4 W rtsil 20 32 34...
Страница 226: ...13 Camshaft Driving Gear 32 200546 02 13 10 W RTSIL 32...
Страница 253: ...U tube manometer Fig 15 12 401508200050 32 200549 10 Turbocharging and Air Cooling 15 W RTSIL 32 15 19...
Страница 254: ...15 Turbocharging and Air Cooling 32 200549 10 15 20 W RTSIL 32...
Страница 274: ...16 Injection System 32 200627 01 16 20 W RTSIL 32...
Страница 280: ...Fuel System 32 200508 07 17 6 W RTSIL 32...
Страница 314: ...19 Cooling Water System 32 200050 19 14 W RTSIL 32...
Страница 394: ...23 Instrumentation and Automation 32 200115 II 23 60 W RTSIL 32...