test guide conditions for validation of lubricating oils...
TRANSCRIPT
Test guide
Conditions for validation of lubricating oils for
2-stroke diesel engines
Cylinder oil & System oil
Author: Roger Mäder (WinGD)
Daniel Peitz (WinGD)
Approved by: Konrad Räss (WinGD)
Konrad Huber (WSCH)
Sangram Kishore Nanda (WSCH)
Date: January 21st 2016
Revision: 7
I
TABLE OF CONTENTS
TABLE OF CONTENTS .............................................................................................................................. I
LIST OF FIGURES ..................................................................................................................................... II
LIST OF TABLES ....................................................................................................................................... II
1 CONFIDENTIALITY ............................................................................................................................ 1
2 INTRODUCTION................................................................................................................................. 1
3 GENERAL FIELD TEST CONDITIONS ............................................................................................. 1 3.1 Information about the lubricant to be tested ................................................................................... 1 3.2 Responsibilities WinGD .................................................................................................................. 2 3.3 Liability – Engine is still under warranty .......................................................................................... 2 3.4 Liability – Engine is not under warranty .......................................................................................... 2 3.5 Validation test agreement ............................................................................................................... 2 3.6 Inspection and other costs .............................................................................................................. 3
4 CYLINDER OIL FIELD TEST CONDITIONS ..................................................................................... 4 4.1 Information about the test engine ................................................................................................... 4 4.2 Test setup ....................................................................................................................................... 4 4.3 Field testing duration overview cylinder oil ..................................................................................... 5 4.4 Additional information for blending on board .................................................................................. 6 4.5 Sampling and recording .................................................................................................................. 7
5 SYSTEM OIL FIELD TEST CONDITIONS ......................................................................................... 8 5.1 Information about the test engine ................................................................................................... 8 5.2 Test setup ....................................................................................................................................... 8 5.3 Requirements for system oil ........................................................................................................... 8 5.4 Sampling and recording .................................................................................................................. 9
6 EVALUATION OF RESULTS, VALIDATION AND WITHDRAWAL ................................................. 9
7 SUPPORTING INFORMATION ........................................................................................................ 10 7.1 Validation flow diagram for field testing ........................................................................................ 10 7.2 Validation flow diagram for read across approval ......................................................................... 11 7.3 Analytical information - Base oil .................................................................................................... 12 7.4 Analytical information - Additives .................................................................................................. 12 7.5 Analytical information - Finished fresh lubricating oil .................................................................... 13 7.6 Analytical information - Residual fuel oil ....................................................................................... 14 7.7 Analytical information - Distillate marine fuel ................................................................................ 15 7.8 Analytical information - Used system lubricating oil ...................................................................... 16 7.9 Analytical information - Used piston underside drain.................................................................... 17 7.10 Inspection programme – Cylinder oil ............................................................................................ 18 7.11 Inspection programme – System oil.............................................................................................. 20 7.12 Limits of deposit thickness on engine components – Cylinder oil ................................................ 21 7.13 Limits of deposit thickness on engine components – System oil .................................................. 21
II
7.14 Limits for engine component wear for preferred test engines types ............................................. 21 7.15 Lubricant consumption – Cylinder oil ............................................................................................ 21 7.16 Lubricant consumption – System oil ............................................................................................. 21
LIST OF FIGURES
Figure 1 Relationship between fuel sulphur content and cylinder oil BN ................................................... 5 Figure 2 Validation flow diagram for field testing ...................................................................................... 10 Figure 3 Validation flow diagram for read across approval ...................................................................... 11
LIST OF TABLES
Table 1 Information about the lubricant to be tested .................................................................................. 1 Table 2 Specific test information for blending on board ............................................................................. 6 Table 3 Analytical information base oil ..................................................................................................... 12 Table 4 Information additives .................................................................................................................... 12 Table 5 Analytical information finished fresh lubricating oil ...................................................................... 13 Table 6 Analytical information residual fuel oil.......................................................................................... 14 Table 7 Analytical information distillate marine fuel .................................................................................. 15 Table 8 Analytical information used system oil ......................................................................................... 16 Table 9 Analytical information piston underside drain oil ......................................................................... 17 Table 10 Inspection programme – Cylinder oil ......................................................................................... 18 Table 11 Sampling programme – Cylinder oil ........................................................................................... 19 Table 12 Inspection programme – System oil .......................................................................................... 20 Table 13 Sampling programme – System oil ............................................................................................ 20 Table 14 Specific wear rates for preferred test engine types ................................................................... 21
1
1 CONFIDENTIALITY
This guide is intended for use within the business units of Winterthur Gas & Diesel Ltd.
(hereinafter called WinGD) and Wärtsilä Services Switzerland Ltd. (hereinafter called WSCH).
The distribution to lubricating oil or lubricating oil additive manufacturers (hereafter denoted as
applicant) is permitted in relation to validation of lubricants but unnecessary distribution should
be avoided.
2 INTRODUCTION
This guide describes the validation procedure for system and cylinder lubricants for Wärtsilä
RTA, RT-flex and Generation X low speed 2-stroke engines as well as Sulzer 2-stroke engines
and supersedes all previous versions. Any deviation of the procedure described hereafter should
be discussed with WinGD and WSCH.
The test guide conditions for field testing of lubricating oils for 2-stroke diesel engines does not
provide any liability on behalf of WinGD nor WSCH. The applicant remains at all times solely
and entirely responsible for the performance of their products and any damages caused thereby.
WinGD and WSCH assume no liability for the products or the procedures described herein and
their results.
3 GENERAL FIELD TEST CONDITIONS
3.1 Information about the lubricant to be tested
The applicant should contact WinGD to inform about his intention to validate a new lubricating
oil. If agreed to start the validation procedure, the applicant should send the information specified
in Table 3, Table 4 and Table 5 and a two litre sample of the candidate lubricating oil for WinGD
benchmark testing (LOQUS test) to:
Please send the enquiry and documents
to:
Samples labelled with sample name,
batch number and type (system oil or
cylinder oil):
and a copy (CC) to:
Intertek (Schweiz) AG Attn.: Marcel Ziegert (WinGD LOQUS test) Wagistrasse 2 CH-8952 Schlieren
Documentation shall contain: Sample name, batch number, material safety data sheet, completed Table 3, Table 4 and Table 5, date of sample submission to Intertek
Table 1 Information about the lubricant to be tested
2
For system oil, an additional five litre sample has to be sent to Dr. Daniel Peitz for FZG
performance testing at the Technical University of Munich (TUM).
The costs to analyse the samples are to be covered by the applicant. If the data provided and
the analysis results are acceptable, a "Letter of Support" will be issued to assist the applicant in
finding a suitable engine to perform field testing. The history of the test engine should be well
documented with records of all repairs, service hours, modifications, load factors and bunker
delivery notes of the last 12 months readily available.
3.2 Responsibilities WinGD
LOQUS testing prior to field testing Field validation testing
Winterthur Gas & Diesel Ltd. Winterthur Gas & Diesel Ltd.
Attn.: Dr. Daniel Peitz Attn.: Mr. Roger Mäder
Schützenstrasse 1 - 3 Schützenstrasse 1 - 3
CH-8400 Winterthur CH-8400 Winterthur
Switzerland Switzerland
[email protected] [email protected]
Tel.: +41 52 262 23 43 Tel.: +41 52 262 23 81
3.3 Liability – Engine is still under warranty
For the engine warranty to remain valid, the lubricant supplier undertakes to accept all liability
for malfunction of and damage to the engine caused by the lubricating oil during the field test,
as determined by a mutually appointed, independent surveyor. Prior to the start of the field test,
a validation test agreement is signed by the parties involved. If this is not concluded, the engine
warranty will be withdrawn.
3.4 Liability – Engine is not under warranty
The lubricant supplier and the engine owner agree on the terms of liability for the performance
of the lubricating oil under investigation, as stated in the issued “Letter of support”. Neither
WinGD nor WSCH are accepting any liability whatsoever arising. Optionally, a separate
validation test agreement can be arranged between all involved parties.
3.5 Validation test agreement
The validation test agreement covers liability, responsibilities and specific test conditions agreed
by all involved parties.
3
3.6 Inspection and other costs
The start of test (SOT), end of test (EOT) and optional interim test inspection (ITI) are performed
by WinGD staff, WSCH staff or representatives appointed by WinGD or WSCH. The applicant
bears the following costs for the inspections:
Replacement parts (e.g. piston rings, gaskets, consumables, etc.) unless if agreed
otherwise with WinGD, WSCH or the vessel owner
One field testing engineer or senior service engineer and additional service engineers as
required to perform the work in the required timeframe
Travel and accommodation for the aforementioned personnel
WinGD and WSCH administrative costs
Note: The organisation of the field test requires a lot of coordination between WinGD, WSCH,
service networks, customer and the applicant. Therefore WinGD and WSCH insist on receiving
the information about the test vessel at least two weeks before the initial inspection is planned.
4
4 CYLINDER OIL FIELD TEST CONDITIONS
4.1 Information about the test engine
The test engine should be of the bore size from 50 to 96 cm and preferably still be included in
the current engine portfolio. The engine should preferably be fitted with the latest design of
pistons, piston rings (gastight top ring and chromium ceramic coating), liners (plateau honed)
and with the pulse lubricating system. WinGD and WSCH will then confirm the choice of engine
stating that the lubricating oil may be used provisionally in the chosen engine to carry out a field
test.
Note: The applicant is required to provide evidence that the candidate product achieves good
results in actual service under practical operating conditions during the trial. A field test on an
engine not meeting all the above requirements can lead to a limited approval.
4.2 Test setup
Two cylinders running on candidate lubricant must be inspected, measured and overhauled prior
to the test and if required by the vessel owner again after the test by WinGD staff, WSCH staff
or representatives appointed by WinGD or WSCH. Inspections have to be carried out according
to Table 10.
WinGD and WSCH accept two options if it is not possible to overhaul two units in one inspection:
Option 1: Only one cylinder is measured and overhauled prior to the test. This can be accepted
if the port stays are too short to overhaul two cylinders. The second test cylinder has to be
measured and overhauled within 500 operating hours after the start of test. If there is a damage
(not caused by the test lubricant) on the first overhauled cylinder, the test will be prolonged until
the second unit reaches the 4’000 operating hours.
Option 2: Only one cylinder is measured and overhauled prior to the test and the applicant
rejects to have a redundant unit. If there is any damage on the single test cylinder, the whole
test procedure has to be repeated.
If the applicant is considering to choose one of the two test options, WinGD and WSCH have to
be informed to confirm the alternative test procedure.
For tests with finished cylinder oils, the test engine should for the most part operate with fuels
having a sulphur content matching to the base number of the cylinder oil according to Figure 1
(e.g. BN100, sulphur range: 1.5 to 3.5 % m/m).
5
Figure 1 Relationship between fuel sulphur content and cylinder oil BN
4.3 Field testing duration overview cylinder oil
4’000 operating hours field testing are required for the following cases:
Newly formulated candidate lubricating oils with a new additive package
Boosted (i.e. mainly BN-related ratio change) candidate lubricating oils
2’000 operating hours field testing are required for the following cases:
Gr. II validation for already validated lubricating oils with Gr. I base oil
Gr. I validation for already validated lubricating oils with Gr. II base oil
Note: Also valid if the additive package has been slightly adjusted in order to keep the
same properties as the already validated product.
Validation of BN 15 to 25 candidate lubricating oils with distillate fuel up to 0.10 % sulphur
WinGD benchmark testing (LOQUS test) without field testing is sufficient for the following
cases:
Uptreated or downtreated (same additive package, different blending ratio) candidate
lubricating oils in the same BN range as an already validated lubricating oil of the same
applicant (BN ranges: BN 30 - 50, BN 50 - 80 or BN 80 - 120)
Change of base oil supplier within Gr. I or Gr. II, but not a change from Gr. I to Gr. II or
from Gr. II to Gr. I
Note: If the LOQUS test is indicating strong deviations from the previously validated
lubricating oil, an additional 2’000 operating hours field testing might be required.
6
4.4 Additional information for blending on board
Tests with on board blended lubricants are different. The range of blended cylinder oils are
varying from BN 30 to BN 120. Due to the wide range, the number of operating hours needed
for the different blended cylinder oil is higher. WinGD and WSCH propose to test 3 different base
number ranges to cover the entire base number range. It can be performed on 3 engines in
parallel or sequentially on the same engine.
WinGD defined 3 different base number ranges for on board blended lubricants:
BN 30 to 40 with a fuel sulphur range from 0.10 to 1.5 % m/m
BN 40 to 80 with a fuel sulphur range from 0.5 to 2.5 % m/m
BN 80 to 120 with a fuel sulphur content from 1.0 to 3.5 % m/m
The minimum length of the field test for each base number range is 4’000 operating hours.
Blending on board types:
Blending of system oil and additives
Blending of two different cylinder oils (also called mix on board)
Blending down of a high BN cylinder oil with system oil
Requirements for the system oil for blending:
It must be a validated system oil according to Technical Bulletin RT-138 Appendix 1
It must meet the requirements according to Technical Bulletin RT-138
It must not exceed the guide limits according to Technical Bulletin RT-138
It must not exceed the specified particle size and particle count according to Technical
Bulletin RT-138
Requirements for the cylinder oil for blending:
It must be a validated cylinder oil according to Technical Bulletin RT-138 Appendix 1
The following table will be part of the ‘’Interim No Objection Letters’ and ‘No Objection Letters’.
BN range of test e.g. BN 30 - BN 120
Tested BN blends e.g. BN 40 e.g. BN 50 e.g. BN 70 e.g. BN 110
Fuel sulphur e.g. 1.0 % e.g. 1.5 % e.g. 2.3 % e.g. 3.5 %
Feed rates e.g. 0.8 g/kWh e.g. 0.8 g/kWh e.g. 0.8 g/kWh e.g. 0.8 g/kWh
Engine type e.g. W-X82
System oil type Used system oil type for blending
Load range during test e.g. 25 % - 45 %
Table 2 Specific test information for blending on board
7
4.5 Sampling and recording
The following samples are to be taken every 500 running hours, analysed by the applicant and
the data recorded. Analysis results are to be forwarded to WinGD after every 1’000 running
hours:
Fuel analysis as per Table 6 for residual fuel oil or Table 7 for distillate marine fuel for
each bunker during the period
Use system oil analysis from the crankcase sump according to Table 8.
Drain oil sampling and analysis (all cylinders) from piston underside (PUS) according to
Table 9 and Table 11.
WinGD and WSCH retain the right to discontinue the test, should the lubricating oil jeopardise
the safe operation of the engine. WinGD and WSCH are not liable for any costs incurred due to
the abortion of a test.
8
5 SYSTEM OIL FIELD TEST CONDITIONS
5.1 Information about the test engine
The test engine should be of the bore size from 50 to 96 cm and preferably still be included in
the current engine portfolio. The engine should preferably be fitted with the latest design of
pistons. WinGD and WSCH will then confirm the choice of engine stating that the lubricating oil
may be used provisionally in the chosen engine to carry out a field test.
Note: The applicant is required to provide evidence that the candidate product achieves good
results in actual service under practical operating conditions during the trial. A field test on an
engine not meeting all the above requirements can lead to a limited approval.
5.2 Test setup
The minimum length of the field test is 4’000 operating hours. One piston has to be pulled at the
start of test and piston under crown cooling space to be cleaned by WinGD staff, WSCH staff or
representatives appointed by WinGD or WSCH. Inspections have to be carried out according to
Table 12.
5.3 Requirements for system oil
An SAE 30 viscosity grade lubricant must be used as system oil. It must have a minimum BN of
5.0 mgKOH/g. Furthermore, it must meet a failure load stage (FLS) of minimum 11 in the FZG
gear machine test method A/8, 3/90 according to ISO 14635-1.
The FLS value of the system oil (at engine inlet) at start of test and at every 2’000 hour interval
must be determined. Depending on the values recorded, the test requirement may be extended
for further 2000 hour periods until a stable value is found. The FZG gear machines located at
the FZG Institute in Munich (Germany) shall be the reference test apparatus and will be used in
the event of any uncertainty about repeatability and reproducibility.
9
5.4 Sampling and recording
The following samples are to be taken every 500 hours, analysed by the applicant and the data
recorded. Analysis results are to be forwarded to WinGD after every 1’000 hours:
Fuel analysis as per Table 6 for residual fuel oil or Table 7 for distillate marine fuel for
each bunker during the period
System oil sampling and analysis from the engine inlet according to Table 8 and Table
13.
WinGD and WSCH retain the right to discontinue the test, should the lubricating oil jeopardise
the safe operation of the engine. WinGD and WSCH are not liable for any costs incurred due to
the abortion of a test.
6 EVALUATION OF RESULTS, VALIDATION AND WITHDRAWAL
The results of the field test are reviewed taking into consideration the test engine, operating
conditions, fuel quality and the performance of the lubricating oil. On the basis of this evaluation
the lubricating oil will be granted a full or limited validation or be rejected. The results of the
validation field test can be reviewed in a meeting between the applicant, WinGD and WSCH.
After satisfactory completion of the field test and a satisfactory outcome of any further
discussions, WinGD and WSCH will formally recognise the candidate oil as validated for use in
Wärtsilä RTA, RT-flex and Generation X low speed 2-stroke engines and as well as Sulzer 2-
stroke engines and provide the applicant with an appropriate ‘No Objection Letter’. The product
will be included in the WinGD and WSCH validated lubricating oil list. The WinGD and WSCH
lubricating oil requirements and manual instructions must be observed at all times.
If validated lubricating oils show unacceptable performance in the field, they may have the no
objection letter withdrawn or limited. However, before making this decision, the lubricant
manufacturer must be consulted and the issues are discussed.
10
7 SUPPORTING INFORMATION
7.1 Validation flow diagram for field testing
Figure 2 Validation flow diagram for field testing
11
7.2 Validation flow diagram for read across approval
Figure 3 Validation flow diagram for read across approval
12
7.3 Analytical information - Base oil
General information
Base oil supplier:
Base oil type (paraffinic, naphthenic, API group):
Refining process steps used:
Base oil components in use since:
Base oil blend in use since:
Base oil manufacturing company/companies:
Blending components (which neutrals, bright stock used):
Analytical data for each base oil
Both specification and typical values required.
Test and analysis methods used are to be stated.
Unit
Preferred test method
ASTM
Appearance
Colour
Density at 15°C
Viscosity at 40° and 100°C
Viscosity Index
Flash Point, PMCC
Pour Point
Carbon Residue
TAN
Ash Content
Chemical composition: aromatic (CA), naphthenic
(CN) and paraffinic (CP)
Sulphur
Chlorine
Nitrogen
Distillation curve at atmospheric pressure
kg/m3
mm2/s
°C
°C
%
mg KOH/g
%
%
%
%
%
D1500
D1298/D4052
D445
D2270
D92/D93
D97
D189/D524/D4530
D664
D482
NMR/IR
D129/D1552
D1317
D1160
Table 3 Analytical information base oil
7.4 Analytical information - Additives
General information
Additive supplier(s):
Additive package code(s):
Additive package(s) used since:
Proportion of additive bought from each company if many:
Additive proportion in finished lubricant (treat rate):
Table 4 Information additives
13
7.5 Analytical information - Finished fresh lubricating oil
Note: both specification and typical values are required. Test and analysis methods used are to
be stated and described if these are in-house procedures.
General information
Lubricant supplier:
Lubricant brand name(s):
Analytical data for fresh lubricant
Both specification and typical values are
required. Test and analysis methods used
are to be stated.
Unit
Preferred test
method
ASTM
Limiting value
Appearance
Colour
Copper strip corrosion
Density
Viscosity at 40°C
Viscosity at 100°C
Viscosity Index
Flash Point, PMCC
BN
Sulphated ash
Ash constituents, quantitatively
- All additive metals
Sulphur
Chlorine
Foaming: tendency + stability I-III (SO only)
Demulsibility (SO only)
Volatility
Distillation curve at atmospheric p
Thermal stability test
Detergency test
FZG (SO only)
kg/m3
mm2/s
mm2/s
°C
mgKOH/g
%
mg/kg
%
%
ml/ml
ml/ml/ml
%
rank
rank
Failure load
stage (FLS)
D1500
D130
D1298/D4052
D445
D445
D2270
D92/D93
D2896
D874
ICP
D129/D1552
D1317
D892
D1401/D2711
Noack Test
D1160
Bench test, free
Bench test, free
IP334/90/DIN
51354 - A/8.3/90
1B
SAE 30 (SO)*
SAE 50 (CO)*
90 – 110
100 / 100
35ml H2O
comp.
comp.
FLS min. 11
Table 5 Analytical information finished fresh lubricating oil
* SO = System Oil, CO = Cylinder Oil
Comp. means competitive or at least comparable to industry standard
14
7.6 Analytical information - Residual fuel oil
General information
Fuel supplier:
Fuel designation:
Sample point:
Analytical data
Test methods used are to be stated Unit Preferred test method ASTM
Kinematic viscosity at 50°C
Density at 15°C
Water content
Carbon residue: micro method
Sulphur
Acid number
Ash Content
Sediment
Ash constituents:
- Vanadium
- Sodium
- Aluminium plus silicon
- Nickel
- Calcium
- Zinc
- Phosphorous
mm2/s
kg/m3
vol %
mass %
mass %
mg KOH/g
mass %
mass %
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
ISO 3104
ISO 3675/12185
ISO 3733
ISO 10370
ISO 8754/14596
ASTM D 664
ISO 6245
ISO 10307-2
IP 501 or ISO 10478
Table 6 Analytical information residual fuel oil
15
7.7 Analytical information - Distillate marine fuel
General information
Fuel supplier:
Fuel designation:
Sample point:
Analytical data
Test methods used are to be stated Unit Preferred test method ASTM
Density at 15°C
Viscosity at 40°C
Cetane index
Sulphur
Flash point
Hydrogen sulphide
Acid number
Oxidation stability
Carbon residue: micro method on 10% residue
(For DMB grade on 100% fuel)
Pour point (upper)
Water (On DMB grade only)
Ash
Lubricity, corrected wear scar diameter at 60ºC
kg/m3
mm2/s
-
mass%
ºC
mg/kg
mg KOH/g
g/m3
%
ºC
vol %
mass %
µm
ISO 3675
ISO 3104
ISO4264
ISO 8754
ISO 2719
IP 570
ASTM D 664
ISO 12205
ISO 10370
ISO 3016
ISO 3733
ISO 6245
ISO 12156-1
Table 7 Analytical information distillate marine fuel
16
7.8 Analytical information - Used system lubricating oil
General information
Oil supplier:
Oil brand name(s):
Sample point:
Analytical data
Test methods used are to be stated Unit Preferred test method ASTM
Appearance
Density
Viscosity at 40°C
Viscosity at 100°C
Viscosity Index
Flash Point, PMCC
Water content
BN
Oxidation
Particle count
Insolubles, coagulated pentane
Insolubles, coagulated toluene
Sulphated ash
Ash constituents, quantitatively
- All additive metals
- Wear metals: Fe, Cu, Pb, Al, Cr, Sn
- other metals: Ni, S, V, Na, Mo, Si, Zn, P,
B, Ca, Mg
kg/m3
mm2/s
mm2/s
°C
%
mg KOH/g
Abs/cm
%
%
%
mg/kg
D1298/D4052
D445
D445
D2270
D92/D93
D95/D1744
D2896
ISO 4406
D893
D893
D874
ICP
Table 8 Analytical information used system oil
17
7.9 Analytical information - Used piston underside drain
General information
Oil supplier:
Oil brand name(s):
Cylinder number:
Analytical data
Test methods used are to be stated Unit Preferred test method ASTM
Viscosity at 100°C
Water content
BN
Ash constituents, quantitatively
- All additives:
- Wear metals: Fe, Cu, Pb, Al, Cr, Sn
- other metals: Ni, S, V, Na, Mo, Si, Zn, P,
B, Ca, Mg
mm2/s
vol%
mg KOH/g
mg/kg
D445
D95/D1744
D2896
ICP
Table 9 Analytical information piston underside drain oil
18
7.10 Inspection programme – Cylinder oil
During the initial inspection, all the units are inspected through the liner ports as any faults with
these units could render the test invalid.
The condition of the piston crowns, piston rings and piston ring grooves should be documented
with photographs and observations. Wear rate measurements of at least two selected liners
including piston rings for the test lubricant are to be made, according to the WinGD measuring
sheet, before and after the test.
Cylinder Oil
Measure SOT* IMI* EOT*
Pistons
General Cleaned x
Ring
grooves
Deposit rated x x
Chrome layer thickness x x
Rings
Change to new x (x)*
Gap width x x
Height and width x x
Coating thickness in 9 positions x x x
Condition x x x
Deposit rated on all sides x
Free moving? x
Skirt Condition x x x
Lands Rated x x x
Top land Condition x x x
Deposit rated x x
Cylinder
liners
Visual Inspection x x x
Wear measurement x x
Replica of running surface
Recommended positions for replica:
EXHS or FPS
(TDC, ~ 100 mm below TDC, midstroke)
and
FWD or AFT
(TDC, ~ 100 mm below TDC, midstroke)
x x
Condition: lacquer, polishing, scuffing,
corrosion, etc.
x x x
Table 10 Inspection programme – Cylinder oil
* SOT = Start Of Test, EOT = End Of Test, IMI = Interim Test Inspection, (x) Owner’s decision
19
The running time, load pattern and the other parameters from this chapter must be recorded.
Anything that appears unusual should be photographed, e.g. wear, corrosion, scuffing,
scratching, etc. for the final report. Operating problems and any irregularities during trial period
which can assist the interpretation of the test results, e.g. sediment in tanks, condition of
lubricators and accumulators after completion of the trial should be recorded.
Service hours since start of test
Action Unit
0
500
1000
1500
2000
2500
3000
3500
4000
Sample used system oil, analyse x x x x x x x x x
Collect PUS samples, analyse x x x x x x x x x
Report engine load factor,
Ambient Temperature,
Ambient Relative Humidity,
Scavenge air pressure, temp
Scavenge air cooling water in/out
Set specific cyl. lube oil feed rate
Actual SLOFR
%MCR
ºC
%
kPa, ºC
ºC
g/kWh
g/kWh
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
Sample engine inlet fuel, analyse x x x x x x x x x
Liner cooling water inlet
Cylinder pressure (MAPEX-PR
data)
°C
kPa
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
Compile above data x x x x x x x x x
System oil consumption l/h x x x x x
Report bunker quality and
quantity
x x x x x
Compile above x x x x x
Send all above data to WinGD x x x x x
Table 11 Sampling programme – Cylinder oil
20
7.11 Inspection programme – System oil
Visual inspections with photographs of the cleanliness of the crankcase space
(compartment walls, running-gear components and sump)
Piston under crown cooling space of one piston
Camshaft or supply unit and gear train
System Oil
Measure SOT EOT
Pistons Under crown Cleaned x
Deposit measured x x
Crankcase Cleanliness x x
Camshaft or supply unit
and gear train
Condition and scuffing of
teeth
x x
Table 12 Inspection programme – System oil
The running time, load pattern and the other parameters in this chapter 7.11 must be recorded.
Anything that appears unusual should be photographed for the final report. Operating problems
and any irregularities during trial period which can assist the interpretation of the test results
should be recorded.
Service hours since start of test
Action Unit
0
500
1000
1500
2000
2500
3000
3500
4000
Sample system oil, analyse x x x x x x x x x
Compile above data x x x x x x x x x
System oil consumption l/h x x x x x
separator rate l/h x x x x X
Total oil volume l x x x x x
Flushing interval times/h x x x x x
Temperature separator °C x x x x x
FZG performance FLS x x x
Compile above x x x x x
Send all above data to WinGD x x x x x
Table 13 Sampling programme – System oil
21
7.12 Limits of deposit thickness on engine components – Cylinder oil
Deposits on the piston, ring groove, ring back and liner in the cylinders lubricated with the
candidate oil should be normal for the engine type, fuel quality, etc.
7.13 Limits of deposit thickness on engine components – System oil
The cleanliness of the crankcase and the piston under crown must be acceptable, with no hard
deposits in piston cooling bores or the cooling space.
7.14 Limits for engine component wear for preferred test engines types
The piston, piston ring and cylinder liner wear must be within the normal range for the engine
type and operating conditions.
Ring groove wear
(Chromium coated)
~ 0.01 mm/1’000 hours are considered as
acceptable
Top piston ring – radial wear
(Chromium ceramic coated)
~ 0.01 mm/1’000 hours are considered as
acceptable
Lower piston rings – radial wear
(Chromium ceramic coated)
~ 0.005 mm/1’000 hours are considered as
acceptable
Cylinder liner diametrical wear
(Plateau honed)
~ 0.05 mm/1’000 hours are considered as
acceptable
Table 14 Specific wear rates for preferred test engine types
7.15 Lubricant consumption – Cylinder oil
The specific cylinder oil consumption of the test and reference oils must be closely monitored
during the approval test. The lubricating oil feed rate should comply with WinGD and WSCH
recommendations. The feed rate of the candidate oil can be reduced as part of the test if there
is sufficient evidence that no adverse effects can be expected.
7.16 Lubricant consumption – System oil
The specific system oil consumption during the approval test shall remain within the usual range
to guarantee proper lubricant testing conditions.