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,
.
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y r au c
y n er
n .
1) Distr istribut ibution ion Bloc Block k
FIVA Ac A c c u m u l at ato ors Cylin ylinde derr Lubr Lubrica icator tor
3) Hig ighp hpress ressur ure e Pip ipe es
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y r au c
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1) Distr istribut ibution ion Bloc Block k
FIVA Ac A c c u m u l at ato ors Cylin ylinde derr Lubr Lubrica icator tor
3) Hig ighp hpress ressur ure e Pip ipe es
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. Exhaust Valve Actuator
Fuel Oil Pressure
FIVA val valve ve Ball Valve Distribution Block Cylinder Lubricator
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Hydr ydra aul ulic ic Cyl ylin inde derr Uni nit, t,
s r
u on
oc .
Seen from Man. Side
Seen from Exhaust Side
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Hydraulic Cylinder Unit, HCU
Double wall pipe
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Hydraulic Cylinder Unit, HCU Hydraulic Diagram.
Inlet Valves
Drain Valves
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Hydraulic Cylinder Unit, v .
406 : Drain valve for FIVA valve 420 : Main supply valve of high pressure o o va ve
406
421 : Drain valve for distribution block
detection 431 : Drain valve for outer pipe oil of the oil pressure (high pressure side) 560 : Supply valve of high pressure oil to u r ca or
421 455 420
Valve posi tion d urin g norm al operation 405
406
420
421
430
431
560
Closed
Closed
Open
Closed
Open
Closed
Open
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Hydraulic Cylinder Unit, .
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Hydraulic Cylinder Unit, .
ns ruc ons Valve No.
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Hydraulic Cylinder Unit,
CAUTION
CAUTION
HCU OVERHAULING 0. CHECK GAUGE WORKS! 1. CLOSE VALVE NO. 420 531 2. OPEN VALVE NO. 421, 405, 406 3.CHECK PRESSURE AT MEASURING . WARNING – NEVER ’OPEN’ VALVE 420 WHEN SYSTEM PRESSURE IS
LUBRICATION OVERHAULING 0. CHECK GAUGE WORKS! 1. CLOSE VALVE NO. 560 2. CHECK PRESSURE AT MEASURING POINT 565 . , THE ’PRE-LUB’ BOTTON AT THE HMI PANEL.
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FIVA Fuel Injection – Valve Actuation
Degree Crank angle
-20
0 20 40 60 80 100 120 140 160 180 200 220 240 260 280 300 320 340 360
Injection End (20) Exhaust valve open (110) Exhaust valve Close (270)
Approximate timing of events to be carried out by the FIVA valve On an ME- engine the timing of injection is variable and this is just an example.
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MAN Diesel FIVA. Pilot Valve
Feed Back Sensor
Control Piston
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.
Main Spool Position Feedback from LVDT Sensor
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Accumulator ,
.
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Accumulator rogen ec ,
-
. e accumu a or c arge pressure s ou e checked within the first week of service. Next check should be made around 4 mon s a er, o owe y c ec ng every months. A minor leakage from the accumulators is , that a pressure drop in the range of 2-5 bar/month is to be expected. working servo oil pressure as well as the accumulator temperature. pressures are: 95 bar +0/-5 @ 20°C 105 bar +0/-5 50°C
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.
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. Injection nozzle
Injection nozzle with non-return valve
Cylinder liner
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. Cylinder lub. oil inlet
Inductive proximity sensor for feed-back signal to control of piston movement
Signal for lubrication from controller
Level sensor for cylinder oil in lubricator
Outlets for cylinder liner . injectors
Injection plunger
Spacer for basic setting of pump
Non-return valve
Stroke adjusting screw Sealingring
Drain oil outlet
200 bar system oil supply Actuator piston
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.
Distribution Block
Cylinder Lubricator
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.
.
The optimum is kept safely down to a feedrate of 0.60 g/kWh.
2.
To clean the piston rings, lands and ring grooves
All approved cylinder oils fullfils the requirements, even at a feed rate as low as 0.60 g/kWh.
3.
To control corrosion, i.e. control the neutralisation af sulphuric acid According to latest Service Letter (SL2013-571) Feedrate Factor and Minimum Feedrate have to be a us e o . – . g x an . g
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Optimising the Cylinder Condition. .
Liner wear rate as a function of lube oil dosage 1
n o i t a ) v n r o a i t s t a l i i c o r b t l u e y u r d a r d a n e u w o b h ( g i H
0,9
0,8
) h 0 0 0 1 / m ( r a e W r e n i L
0,7
0,6
0,5
0,4
0,3
0.10 mm/1000h 0,2
. 0,1
0.02 mm/1000h
0 ,
,
,
,
,
,
,
,
,
Lube Oil Dosage (g/kWh)
,
,
,
,
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ow o
e erm ne
ac or.
Prerequisite for correct determination of =
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Sulphur % in relation to BN number. -
Fuel type Distillate
BN and LNG
<= 40 High Sulphur residual fuel Mk 6 - 8 55 - 100 High Sulphur residual fuel Mk 9 or newer 70 - 100
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.
.
A A
.
.
A
A A
A
A
A A
A
A A
0.6 g/kWh
F = 70/40 =1.75
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ACC Dosages calculated from different Feedrate , .
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.
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.
1:
ACC familiarsation.
. Use oil analysis to evaluate. . 2:
Adjust according to Feed Rate sweep . ust accor ng to o ana ys s.
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.
CPR-POP
-
Liner
wear
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Piston ring wear. .
CPR-POP
CPR-CL
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Analysis Safe Area. .
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Graph to find the perfect Feed Rate settin . SL 2013-571
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Running in SL2013-571. .
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ACC Running in schedule. .
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.
Minimum feed rate
Sulphur % ” ”
Fixed Feed rate
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When operating the Lubrication from MOP without updated software, the system will not allow the Feed Rate Factor to be adjusted below 0.25g/kWhxS%. oil dossage correspondig to Feed Rate Factor settin s 0 20 or 0,23g/kWhxS, the factor has to be adjusted to 0.26g/kWhxS% in the MOP and correction on the sulphur content in the fuel oil (S%) has to be done according to the Correction Tables.
. Running with Feed Rate Factor 0.20g/kWhxS% (Normal Running) [Correction factor: 0.20/0.26=0.77]
Running with Feed Rate Factor 0.23g/kWhxS% (Running In) [Correction factor: 0.23/0.26=0.88]
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-
.
In case of CCU failure, where the CCU cannot be changed , can be achieved by a temporary cable from one of the ECU units, , the lubricator on the unit in question. e u r cat on w e w t ran om timing.
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-
.
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HCU’s Mounted on a Common Base Plate.
Double wall hi h ressure pipe High p ressure oil inlet fro m th e HPS
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.
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Sealing rings
,
.
ange Outer pipe Inner Pipe
Sealing rings Slide Bearings
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1. 2. 3. 4. . 6.
CLOSE the valve 430 at the last but one Hydraulic Cylinder Unit. OPEN the valve 431 at the last HCU to decrease the pressure in the space between the inner and outer pipe. CLOSE the valve 431 at the last HCU again. Check the pressure increase in the space between at pos. 435, at the last HCU , . When the leakage has been eliminated, bring all the valves to their normal position.
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All data provided in these training materials is non-binding. This data serves informational purposes only and is especially not . Depending on the subsequent specific individual projects, the relevant data may be subject to changes and will be assessed and determined n v ua y or eac pro ec . sw epen on e par cu ar characteristics of each individual project, especially specific site and operational conditions.
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The learning objective(s) of this training unit is (are) as follows:
Objective 2
Objective 3
….
….
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The qualification of our trainees is realised…
Qualification 1
Qualification 2
Qualification 3 ... ...
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The PrimeServ Academy offers a wide range of
Item 1
Item 2
Item 3 ….
