ASTM F1338-91(2002)

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An American National Standard
Designation:F 1338–91 (Reapproved 2002)
Standard Guide for
Main Propulsion Medium Speed Marine Diesel Engines
Covering Performance and Minimum Scope of Assembly
This standard is issued under the fixed designation F 1338; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
1. Scope 3. Terminology
1.1 This guide covers performance and minimum scope of 3.1 Definitions of Terms Specific to This Standard:
assembly of all medium speed marine diesel engines intended 3.1.1 diesel engine—a reciprocating or rotary engine in
for main propulsion of single or multiple screw propelled whichignitionofthemainfuelcharge,asitisintroducedtothe
marine vessels or for vessels using other than screw propeller- combustionchamber,shallbebytheheatofcompressionofthe
type main propulsion. charge of combustion air, during regular operation of the
1.2 This guide is intended to supplement the regulations of engine from idle speeds up to full speed, regardless of whether
legally constituted regulating authorities. In the event of any miscellaneous methods to augment such heat of compression
conflict, which may become apparent after publication of this are used to facilitate starting of the engine under normal
guide, with such legally constituted regulations, the latter shall conditions or under low ambient temperature conditions or low
takeprecedence,asmaybeapplicablewithinthejurisdictionof intake air temperature conditions. Engines that are designed to
such authorities and specific to each case, unless such latter operate with a continuously hot spot or bulb or other device to
regulations are formally waived by proper cognizant authority. facilitate ignition or combustion, or both, of low cetane fuels,
1.3 This guide is not intended to relieve the purchaser of the or any fuels slow to ignite or to burn, or both, shall be
obligation fully to advise the engine builder of all of the considered to be diesel engines for purposes of this guide.
purchaser’s unique operational considerations to allow those 3.1.2 engine assembly—contains, but is not necessarily
considerations to be satisfied. limited to, that apparatus secured to or applied to a basic
engine, which is needed to make the basic engine operable and
2. Referenced Documents
capable of developing its rated power as indicated or to be
2.1 ABS Standard:
indicated on the engine nameplate.
Rules for Building and Classing Steel Vessels 3.1.3 fuel map—achartonwhichthereisdisplayedafamily
2.2 IEEE Standard:
of curves of various constant rates of specific fuel consump-
Standard No. 45, Recommended Practice for Electrical tion, each curve of the family being plotted on a grid, the
Installations on Shipboard
abscissa of which is engine r/min and the ordinate of which is
2.3 ISO Standard: brake horse power or brake mean effective pressure.
ISO 3046/1 Reciprocating Internal Combustion Engines—
3.1.4 medium speed diesel engine—all diesel engines with
Performance crank-shaft rotative speeds encompassed by the maximum
2.4 Code of Federal Regulations:
continuous speed bracket of 400 to 600 r/min (see Appendix
United States Coast Guard Regulations as Published in X1).
Code of Federal Regulations No. 46 (CFR 46)
4. Significance and Use
4.1 Comparison of brake horsepower developed and of
This guide is under the jurisdiction of ASTM Committee F25 on Ships and
specific fuel consumption rates from engine to engine may be
Marine Technology and is the direct responsibility of Subcommittee F25.11 on
made by use of data based upon a standard for composition of
Machinery.
Current edition approved April 15, 1991. Published December 1991. an engine assembly.
Available from American Bureau of Shipping (ABS), ABS Plaza, 16855
4.2 The purchaser of the engine assembly will be fully
Northchase Dr., Houston, TX 77060.
advised of the minimum scope of assembly which the pur-
Available from Institute of Electrical and Electronics Engineers, Inc. (IEEE),
chaser may rightfully expect to be encompassed by a response
1828 L St., NW, Suite 1202, Washington, DC 20036-5104.
Available fromAmerican National Standards Institute (ANSI), 25 W. 43rd St.,
to a request for quotation and to be delivered in response to a
4th Floor, New York, NY 10036.
Available from Superintendent of Documents, U.S. Government Printing
Office, Washington, DC 20402.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
F 1338
purchase order unless the engine builder in the proposal or in turbine and combustion air blower, or both, if required by
the offer to sell has clearly advised otherwise. engine design concept, to provide a supply of air for scaveng-
4.3 It will be made apparent to the purchaser that additional
ing or supercharging, or both, and for basic combustion of the
auxiliary and accessory equipment will be needed to supple- fuel.The single-shaft exhaust gas-driven turbochargers may be
ment the defined engine assembly when full consideration is
engine mounted or separately mounted. The intended method
given to the application of the engine assembly as a prime
of mounting of such turbochargers shall be clearly described to
mover in a specific vessel.
theprospectivepurchaserbytheenginebuilderinanyresponse
to an inquiry so that the impact on installation cost and
5. Regulations, Conventions, and Standards
responsibility, if any, will be apparent. Turbocharger arrange-
ments, for water-washing or other routine maintenance proce-
5.1 Specific—The regulations, conventions, and standards
dures recommended by the engine builder, shall be provided.
to which a commercial marine vessel may be subject in regard
to the main propulsion prime movers will vary depending upon
7.1.5 An engineered arrangement of sufficient drilled and
the flag of registry of the vessel.
tapped holes, properly plugged during shipment, to allow
5.2 General:
measurement of combustion air and exhaust gas temperatures
5.2.1 There may be regulations, conventions, and standards
and pressures at appropriate points in the engine assembly.
and such applicable international treaties to which the country
7.1.6 One or more air cooler assemblies, if required by
of registry may subscribe which shall be taken as forming a
engine design concept and power rating, designed to accept all
partofthisguidetotheextentspecifiedhereinandtotheextent
of the air for combustion and scavenging and to cool such air
they shall be deemed applicable to the vessel by the country of
to appropriate temperatures as required by design of the basic
registry.
engine and by the predicted range of brake horsepower output
5.2.2 Typical examples applicable to vessels of the United
andconcurrentspecificfuelconsumptionraterange.Following
States ofAmerica registry are as follows: Institute of Electrical
the logic of 7.1.4, the air cooler assembly might be offered as
and Electronic Engineers Standard No. 45 (IEEE No. 45);
a remotely mounted device along with its associated turbo-
RulesoftheAmericanBureauofShipping;RulesoftheUnited
chargers. If so, as in the case of the turbocharger, the intended
States Coast Guard as printed in various Part Numbers of Title
method of mounting shall be clearly described to the prospec-
46 CFR of the United States of America and formerly
tive purchaser by the engine builder so the impact on installa-
commonly known as CG-115 (Marine Engineering Regula-
tion cost and responsibilities, if any, will be apparent.
tions, also known as Sub-chapter F); and CG-259 (Electrical
7.1.6.1 Such cooler assemblies, commonly referred to as
Engineering Regulations, also known as Sub-chapter J).
intercoolers or aftercoolers, shall be arranged, if required by
overallenginedesignandapplication,tolimitcoolingortoadd
6. Ordering Information
heat energy to the charge of air for combustion to allow
6.1 Orders for machinery under this guide shall include the
operation of the engine at low continuous power ranges as
following:
indicated by the engine builder on a chart of the descriptive
6.1.1 ASTM designation, title, and date of this guide.
curves of performance of the engine (see 4.1 and 4.2).
6.1.2 Quantity, and
7.1.7 A jacket water-circulating pump and any other closed
6.1.3 Packaging or packing and preservation requirements,
circuit fresh water pumps required for operation of the engine.
or both.
If this pump is not engine mounted and engine driven as
parasitic load, the specific fuel rate for the engine on the
7. Minimum Scope of Assembly
factory test stand shall be corrected logically and accurately to
7.1 Each engine assembly to meet this guide shall include
increase appropriately the specific fuel rate demonstrated on
the following:
the factory test stand and thereby to allow comparison to other
7.1.1 The basic power producing unit or engine, be it that
engines (see Section 8).
formed by an internal combustion reciprocating engine or by
7.1.8 One or more pressure pumps for main engine lubri-
an internal combustion rotary engine.
cating oil supply of each engine unit and, if required by design,
7.1.2 An engine-mounted intake manifold or manifolds to
for piston cooling service. If this pump(s) is not engine
conduct air for combustion to the basic engine, with such
mounted and engine driven as parasitic load, the specific fuel
manifold properly secured to the basic engine and properly
rate for the engine on the factory test stand shall be corrected
gasketed for the service intended, which is the efficient
logically and accurately to increase appropriately the specific
conduction of air to the basic engine when it is installed in a
fuel rate demonstrated on the factory test stand and thereby to
marine environment for main propulsion of a vessel.
allow comparison to other engines (see Section 8).
7.1.3 An engine-mounted exhaust manifold properly insu-
lated (including insulation by use of a water jacket application) 7.1.9 Afull flow lubricating oil duplex discharge strainer or
filter for each engine unit to transmit all oil delivered to the
as may be required by laws and regulations discussed in 2.2
herein [such as the requirements of USCG-115, paragraph engine by the main lubricating oil pressure pump; or, if
required by engine design, lubricating oil supplied to the
56.50-1 (k), Parts 50–60, Title 46 CFR].
7.1.4 One or more engine-driven and engine-mounted scav- subordinateanddiscretesystemsoftheenginemaybesupplied
via an additional separate duplex lubricating oil strainer. Such
enging air blowers, if required by engine design concept, or
one or more single shaft assemblies of an exhaust gas-driven strainers need not necessarily be supplied as engine mounted.
F 1338
7.1.10 An integral, lubricating oil sump, suitable for opera- 7.1.18.2 If the main propulsion engine(s) are to be direct-
tion of that engine when installed in a horizontal position but reversible engines, the engine builder shall include the feature
of a limited capacity with respect to total oil charge. Such a of reversibility and the engine mounted controls to accomplish
sump may be provided with two or more openings which, if stopping and prompt reversing adjustment and restarting of the
left open for connection to a drain, will allow use of a remote engine in the opposite direction of rotation. Such controls may
oil sump of larger capacity as suggested by the engine builder. be either for complete local control only, of the engine, or
adaptable for local control and remote control from the bridge
7.1.11 A duplex suction strainer of mesh as recommended
by the engine builder to be located on the suction side of the or the engine room console, or both. The scope of the remote
control features required in this case also must be clearly
main lubricating oil pressure pumps. Such a strainer need not
necessarily be engine mounted. presentedbythepurchasertotheenginebuilderinthepurchase
specification and requirements of the therein identified cogni-
7.1.12 A force feed cylinder or valve stem lubricator sys-
zant regulatory bodies must be met by the engine builder with
tem, or both, if required by engine builder’s design, or by the
respect to components supplied by the engine builder.
serviceintended,orboth,orbymainenginefuelintended,with
both of the latter as stated by the purchaser. 7.1.18.3 All required engine-mounted components and pip-
ing for compressed control air and starting air or hydraulic oil
7.1.13 Crankcase pressure relief valves or covers as recom-
supplied shall be engine mounted by the engine builder
mended by the engine builder to meet standards of cognizant
including, but not necessarily limited to, a duplex filter with a
marine inspection and classification authority as identified by
line lubricator for air to the starting air distributor; pilot-
the purchaser.
operated main starting air valve; pilot air distribution lines; a
7.1.14 An engine-barring device which shall be power
starting air-reducing valve, if required; and starting air mani-
driven unless clearly identified to the purchaser by the engine
folds or headers.All such piping shall be terminated at flanges
builder as required to be operated by manual effort only.
or other fitting in a workmanlike manner for connection to
7.1.15 An engine-mounted flywheel secured to the drive
ship’s lines by others.
end of the crankshaft complete and sufficient to carry timing
7.1.19 Fuel Oil System:
marks. If required by drive system arrangement to the reduc-
7.1.19.1 Anengine-mounted,engine-driven,fueloilbooster
tion gear (or to the propeller shafting if no reduction gear is to
pump (service pump) shall be provided, if required, by the
beused),theflywheelshallbecompleteandsufficienttoaccept
engine builder’s design; however, such a pump may be motor
mounting of the adjacent flange or coupling component. The
driven for this class of engine and not integral with the engine
machining of the flywheel to accept the adjacent flange or
assemblyasshipped.Itis,however,tobeanitemfurnishedand
coupling component is part of an engine assembly. The
to be treated as a parasitic load.
associated set of bolts required shall not be part of an engine
assembly. 7.1.19.2 Aduplex final fuel filter or strainer, as specified by
the engine builder, shall be supplied by the engine builder. If
7.1.16 Propeller Thrust Bearing—NO propeller thrust bear-
engine mounted, it shall be properly protected for shipment so
ing shall be incorporated into the engine assembly for medium
that the engine-mounted fuel distribution piping is maintai
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