THE CORRESPONDENCE OF CHARLES III OF SPAIN AS A SOURCE FOR CLIMATE RESEARCH
2. Series epistolares utilizadas
The design of the starting air system is partly determined by the rules of the classification societies.
Starting air receiver
The starting air receiver should be dimensioned for a nominal pressure of 30 bar.
The number and the capacity of the air receivers for pro-pulsion engines depend on the requirements of the clas-sification societies and the type of installation.
See the tables “Starting air compressor and receiver ca-pacities”.
If the receivers are installed horizontally, there must be a slope of 3 - 5° towards the bottom-end to provide good draining.
Oil and water separator
An oil and water separator should always be installed in the pipe between the compressor and the air receiver.
Depending on the operation conditions of the installa-tion, an oil water separator may be needed in the pipe between the air receiver and the engine.
The starting air pipes should always be drawn with slope and be arranged with manual or automatic draining at the lowest points.
Starting air compressor
At least two starting air compressors must be installed.
It should be possible to fill the starting air receiver from minimum to maximum pressure in 30 minutes. For exact determination of the capacity, the rules of the classifica-tion societies should be followed.
See the tables “Starting air compressor and receiver ca-pacities”.
9. Starting air system
Starting air compressor and receiver capacities
The following classification societies have been consid-ered:
• American Bureau of Shipping
• Bureau Veritas
• Det Norske Veritas
• Germanischer Lloyd
• Lloyd’s Register of Shipping
• Registro Italiano Navale
• Maritime Register
(1) For multi-engine installations the number of starts required by the classification societies is normally not specified in the rules. If the requirements differ from the number of starts specified above, the capacities must be corrected in the same proportion.
(2) For installation with clutches.
Configuration table (4V59L0168)
In multiple engine propulsion installations the minimum capacity of the starting air vessels shall be multiplied by the factor mentioned in table 4V59L0168, or at least as required as rules.
9. Starting air system
Installation with nonreversible engines and CP-propeller
Number of cylinders 6 8 9 12 16 18
Single screw vessel with 1 engine
Number of starts: 6 Receiver m³
Compressor m³/h 2 x 1.0
2 x 30 2 x 1.0 Single screw vessel with 2 engines
Number of starts: 6 (1), (2) Receiver m³
Compressor m³/h 2 x 1.0
2 x 30 2 x 1.0 Twin screw vessel with 1 engine/shaft
Number of starts: 12 (1) Receiver m³
Compressor m³/h 2 x 1.5
2 x 45 2 x 1.5 Twin screw vessel with 2 engines/shaft
Number of starts: 12 (1), (2) Receiver m³
Compressor m³/h 2 x 1.5
2 x 45 2 x 1.5 Twin engines with clutches
on single propeller
Two engines on two propellers
Double - twin engines with clutches on two propellers
Internal starting and compressed air system, in-line engines (4V69E8139-3d)
9. Starting air systemSystem components
01 Starting air master valve
02 Blocking valve, when turning gear engaged 03 Shut-off valve
04 Starting booster for speed governor 05 Flame arrestor
06 Starting air valve in cylinder head 07 Starting air distributor
08 Pneumatic cylinder at each injection pump 09 Valve for automatic draining
10 High pressure filter 11 Air container 12 Stop valve
13 Starting fuel limiter 14 Pressure control valve 18 Oil mist detector 19 Speed governor
20 Turbine and compressor cleaning unit (see page 5)
Pipe connections
301 Starting air inlet, 30 bar 302 Control air inlet, 30 bar
303 Driving air to oil mist detector, 2 - 12 bar*
304 Speed setting air to governor*
311 Control air to WG, BP and TC-cleaning, 4-8 bar*
Electrical instruments Y151 Fuel limiting Y153 Autostop Y154 Emergency stop
PT301 Starting air pressure, inlet PT311 Control air pressure Y321 Starting
Y331 Slow turning
Y519 I/P converter for waste gate valve Y643 By-pass valve
* Clean and dry control air
Internal starting and compressed air system, V-engines (4V69E8140-3d)
9. Starting air systemSystem components
01 Starting air master valve 02 Drain valve
03 Pressure control valve 04 Slow turning valve
05 Starting booster for speed governor 06 Flame arrestor
07 Starting air valve in cylinder head 08 Starting air distributor
09 Pneumatic sylinder at each injection pump 10 Valve for automatic draining
11 High pressure filter 12 Air container 13 Stop valve
14 Blocking valve, when turning gear engaged 15 Starting fuel limiter
16 Closing valve
17 Mechanical overspeed trip device 19 Oil mist detector
20 Speed Governor
21 Turbine and compressor cleaning unit
Pipe connections
301 Starting air inlet, 30 bar 302 Control air inlet, 30 bar
303 Driving air to oil mist detector, 2-12 bar*
304 Speed setting air to governor*
311 Control air to WG, BP and TC-cleaning, 4-8 bar*
Electrical instruments Y151 Fuel limiting Y153 Autostop Y154 Emergency
PT301 Starting air inlet pressure PT311 Control air pressure Y321 Starting
Y331 Slow turning
Y519 I/P converter for waste gate valve
*) clean and try control air
Starting air system, 2 x Wärtsilä 46 (3V69E3648b)
9. Starting air system
System components 01 Diesel engine 02 Starting air vessel 03 Starting air compressor 04 Oil and water separator
05 Manual drainage (from lowest point) 06 Control air filter and dryer
07 Propulsion plant remote control system
Pipe connections Pipe dimensions
L46, 12V46 16, 18V46 301 Starting air inlet 30 bar DN50 2*DN50 302 Control air inlet 30 bar Ø18 Ø18 303 Driving air to oil mist detec- Ø10 Ø10
tor 2-12 bar, clean and dry
304 Speed setting air to governor Ø6 Ø6 311 Control air to WG, BP and
TC-cleaning, 4 - 8 bar Ø8 Ø8
Connection 301:
- Compressed air to cylinders for starting and slow-turning
Connection 302:
- Starting booster for speed governor - Fuel pump stop cylinders
- Starting fuel limiter
- Pilot air for starting, slow-turning and stop valves - Overspeed trip device (V46 only)
Connection 303:
- Control air to oil mist detector Connection 304:
- Speed setting air to governor (only in case of mechanical governor with pneumatic speed setting Connection 311:
- Control air to 1/P convertor for waste-gate valve - Control air to charge air by-pass valve if installed - Turbine and compressor cleaning unit
Starting air vessel (4V49A0019)
Connections
A Inlet R 3/4 in
B Outlet Ø 50
C Pressure gauge R 1/4 in
D Drain R 1/4 in
E Auxiliary connection R ½ in
G Safety valve R ½ in
Size[liters] Dimensions Weight [kg]
L D
5001000 15002000
32043560 34604610
480650 800800
480890 10901450 9. Starting air system