ASTM F1338-91(2013)
(Guide)Standard Guide for Main Propulsion Medium Speed Marine Diesel Engines Covering Performance and Minimum Scope of Assembly
Standard Guide for Main Propulsion Medium Speed Marine Diesel Engines Covering Performance and Minimum Scope of Assembly
SIGNIFICANCE AND USE
4.1 Comparison of brake horsepower developed and of specific fuel consumption rates from engine to engine may be made by use of data based upon a standard for composition of an engine assembly.
4.2 The purchaser of the engine assembly will be fully advised of the minimum scope of assembly which the purchaser may rightfully expect to be encompassed by a response to a request for quotation and to be delivered in response to a purchase order unless the engine builder in the proposal or in the offer to sell has clearly advised otherwise.
4.3 It will be made apparent to the purchaser that additional auxiliary and accessory equipment will be needed to supplement the defined engine assembly when full consideration is given to the application of the engine assembly as a prime mover in a specific vessel.
SCOPE
1.1 This guide covers performance and minimum scope of assembly of all medium speed marine diesel engines intended for main propulsion of single or multiple screw propelled marine vessels or for vessels using other than screw propeller-type main propulsion.
1.2 This guide is intended to supplement the regulations of legally constituted regulating authorities. In the event of any conflict, which may become apparent after publication of this guide, with such legally constituted regulations, the latter shall take precedence, as may be applicable within the jurisdiction of such authorities and specific to each case, unless such latter regulations are formally waived by proper cognizant authority.
1.3 This guide is not intended to relieve the purchaser of the obligation fully to advise the engine builder of all of the purchaser's unique operational considerations to allow those considerations to be satisfied.
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Designation: F1338 − 91 (Reapproved 2013) An American National Standard
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 F1338; 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 (´) indicates an editorial change since the last revision or reapproval.
1. Scope 2.4 Code of Federal Regulations:
United States Coast Guard Regulations as Published in Code
1.1 This guide covers performance and minimum scope of
of Federal Regulations No. 46 (CFR 46)
assembly of all medium speed marine diesel engines intended
for main propulsion of single or multiple screw propelled
3. Terminology
marine vessels or for vessels using other than screw propeller-
3.1 Definitions of Terms Specific to This Standard:
type main propulsion.
3.1.1 diesel engine—a reciprocating or rotary engine in
1.2 This guide is intended to supplement the regulations of
whichignitionofthemainfuelcharge,asitisintroducedtothe
legally constituted regulating authorities. In the event of any
combustionchamber,shallbebytheheatofcompressionofthe
conflict, which may become apparent after publication of this
charge of combustion air, during regular operation of the
guide, with such legally constituted regulations, the latter shall
engine from idle speeds up to full speed, regardless of whether
takeprecedence,asmaybeapplicablewithinthejurisdictionof
miscellaneous methods to augment such heat of compression
such authorities and specific to each case, unless such latter
are used to facilitate starting of the engine under normal
regulations are formally waived by proper cognizant authority.
conditions or under low ambient temperature conditions or low
1.3 This guide is not intended to relieve the purchaser of the
intake air temperature conditions. Engines that are designed to
obligation fully to advise the engine builder of all of the
operate with a continuously hot spot or bulb or other device to
purchaser’s unique operational considerations to allow those
facilitate ignition or combustion, or both, of low cetane fuels,
considerations to be satisfied.
or any fuels slow to ignite or to burn, or both, shall be
considered to be diesel engines for purposes of this guide.
2. Referenced Documents
2 3.1.2 engine assembly—contains, but is not necessarily
2.1 ABS Standard:
limited to, that apparatus secured to or applied to a basic
Rules for Building and Classing Steel Vessels
3 engine, which is needed to make the basic engine operable and
2.2 IEEE Standard:
capable of developing its rated power as indicated or to be
Standard No. 45, Recommended Practice for Electrical In-
indicated on the engine nameplate.
stallations on Shipboard
3.1.3 fuel map—a chart on which there is displayed a family
2.3 ISO Standard:
of curves of various constant rates of specific fuel
ISO 3046/1 Reciprocating Internal Combustion Engines—
consumption, each curve of the family being plotted on a grid,
Performance
the abscissa of which is engine r/min and the ordinate of which
is brake horse power or brake mean effective pressure.
This guide is under the jurisdiction of ASTM Committee F25 on Ships and
Marine Technology and is the direct responsibility of Subcommittee F25.11 on
3.1.4 medium speed diesel engine—all diesel engines with
Machinery and Piping Systems.
crank-shaft rotative speeds encompassed by the maximum
Current edition approved Oct. 1, 2013. Published October 2013. Originally
approved in 1991. Last previous edition approved in 2007 as F1338 – 91 (2007). continuous speed bracket of 400 to 600 r/min (see Appendix
DOI: 10.1520/F1338-91R13.
X1).
Available from American Bureau of Shipping (ABS), ABS Plaza, 16855
Northchase Dr., Houston, TX 77060, http://www.eagle.org.
Available from Institute of Electrical and Electronics Engineers, Inc. (IEEE),
445 Hoes Ln., P.O. Box 1331, Piscataway, NJ 08854-1331, http://www.ieee.org. AvailablefromU.S.GovernmentPrintingOfficeSuperintendentofDocuments,
Available fromAmerican National Standards Institute (ANSI), 25 W. 43rd St., 732 N. Capitol St., NW, Mail Stop: SDE, Washington, DC 20401, http://
4th Floor, New York, NY 10036, http://www.ansi.org. www.access.gpo.gov.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
F1338 − 91 (2013)
4. Significance and Use gasketed for the service intended, which is the efficient
conduction of air to the basic engine when it is installed in a
4.1 Comparison of brake horsepower developed and of
marine environment for main propulsion of a vessel.
specific fuel consumption rates from engine to engine may be
7.1.3 An engine-mounted exhaust manifold properly insu-
made by use of data based upon a standard for composition of
lated (including insulation by use of a water jacket application)
an engine assembly.
as may be required by laws and regulations discussed in 2.2
4.2 The purchaser of the engine assembly will be fully
herein [such as the requirements of USCG-115, paragraph
advised of the minimum scope of assembly which the pur-
56.50-1 (k), Parts 50–60, Title 46 CFR].
chaser may rightfully expect to be encompassed by a response
7.1.4 One or more engine-driven and engine-mounted scav-
to a request for quotation and to be delivered in response to a
enging air blowers, if required by engine design concept, or
purchase order unless the engine builder in the proposal or in
one or more single shaft assemblies of an exhaust gas-driven
the offer to sell has clearly advised otherwise.
turbine and combustion air blower, or both, if required by
4.3 It will be made apparent to the purchaser that additional
engine design concept, to provide a supply of air for scaveng-
auxiliary and accessory equipment will be needed to supple-
ing or supercharging, or both, and for basic combustion of the
ment the defined engine assembly when full consideration is
fuel.The single-shaft exhaust gas-driven turbochargers may be
given to the application of the engine assembly as a prime
engine mounted or separately mounted. The intended method
mover in a specific vessel.
of mounting of such turbochargers shall be clearly described to
theprospectivepurchaserbytheenginebuilderinanyresponse
5. Regulations, Conventions, and Standards
to an inquiry so that the impact on installation cost and
5.1 Specific—Theregulations,conventions,andstandardsto responsibility, if any, will be apparent. Turbocharger
which a commercial marine vessel may be subject in regard to
arrangements, for water-washing or other routine maintenance
the main propulsion prime movers will vary depending upon
procedures recommended by the engine builder, shall be
the flag of registry of the vessel.
provided.
7.1.5 An engineered arrangement of sufficient drilled and
5.2 General:
tapped holes, properly plugged during shipment, to allow
5.2.1 There may be regulations, conventions, and standards
measurement of combustion air and exhaust gas temperatures
and such applicable international treaties to which the country
and pressures at appropriate points in the engine assembly.
of registry may subscribe which shall be taken as forming a
partofthisguidetotheextentspecifiedhereinandtotheextent 7.1.6 One or more air cooler assemblies, if required by
engine design concept and power rating, designed to accept all
they shall be deemed applicable to the vessel by the country of
registry. of the air for combustion and scavenging and to cool such air
to appropriate temperatures as required by design of the basic
5.2.2 Typical examples applicable to vessels of the United
States ofAmerica registry are as follows: Institute of Electrical engine and by the predicted range of brake horsepower output
andconcurrentspecificfuelconsumptionraterange.Following
and Electronic Engineers Standard No. 45 (IEEE No. 45);
RulesoftheAmericanBureauofShipping;RulesoftheUnited the logic of 7.1.4, the air cooler assembly might be offered as
a remotely mounted device along with its associated turbo-
States Coast Guard as printed in various Part Numbers of Title
46 CFR of the United States of America and formerly chargers. If so, as in the case of the turbocharger, the intended
method of mounting shall be clearly described to the prospec-
commonly known as CG-115 (Marine Engineering
tive purchaser by the engine builder so the impact on installa-
Regulations, also known as Sub-chapter F); and CG-259
tion cost and responsibilities, if any, will be apparent.
(Electrical Engineering Regulations, also known as Sub-
chapter J).
7.1.6.1 Such cooler assemblies, commonly referred to as
intercoolers or aftercoolers, shall be arranged, if required by
6. Ordering Information
overallenginedesignandapplication,tolimitcoolingortoadd
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
6.1.3 Packaging or packing and preservation requirements,
7.1.7 A jacket water-circulating pump and any other closed
or both. circuit fresh water pumps required for operation of the engine.
If this pump is not engine mounted and engine driven as
7. Minimum Scope of Assembly
parasitic load, the specific fuel rate for the engine on the
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
an internal combustion rotary engine. 7.1.8 One or more pressure pumps for main engine lubri-
7.1.2 An engine-mounted intake manifold or manifolds to cating oil supply of each engine unit and, if required by design,
conduct air for combustion to the basic engine, with such for piston cooling service. If this pump(s) is not engine
manifold properly secured to the basic engine and properly mounted and engine driven as parasitic load, the specific fuel
F1338 − 91 (2013)
rate for the engine on the factory test stand shall be corrected 7.1.17.2 The engine builder shall provide an overspeed
logically and accurately to increase appropriately the specific automatic shutdown device or overspeed self-resetting device
separate and distinct from the governor of 7.1.17.1 and it shall
fuel rate demonstrated on the factory test stand and thereby to
be engine mounted.
allow comparison to other engines (see Section 8).
7.1.18 Start-Stop Controls:
7.1.9 Afull flow lubricating oil duplex discharge strainer or
7.1.18.1 The engine builder shall provide an engine-
filter for each engine unit to transmit all oil delivered to the
mounted system either for complete local control only of the
engine by the main lubricating oil pressure pump; or, if
engine or adaptable for local control and remote control from
required by engine design, lubricating oil supplied to the
the bridge or the engine room control console, or both. The
subordinateanddiscretesystemsoftheenginemaybesupplied
scope of the remote control features required by the purchaser
via an additional separate duplex lubricating oil strainer. Such
must be clearly presented to the engine builder in the purchase
strainers need not necessarily be supplied as engine mounted.
specification, and requirements of the therein identified cogni-
7.1.10 An integral, lubricating oil sump, suitable for opera-
zant regulatory bodies must be met by the engine builder.
tion of that engine when installed in a horizontal position but
7.1.18.2 If the main propulsion engine(s) are to be direct-
of a limited capacity with respect to total oil charge. Such a
reversible engines, the engine builder shall include the feature
sump may be provided with two or more openings which, if
of reversibility and the engine mounted controls to accomplish
left open for connection to a drain, will allow use of a remote
stopping and prompt reversing adjustment and restarting of the
oil sump of larger capacity as suggested by the engine builder.
engine in the opposite direction of rotation. Such controls may
7.1.11 A duplex suction strainer of mesh as recommended
be either for complete local control only, of the engine, or
by the engine builder to be located on the suction side of the
adaptable for local control and remote control from the bridge
main lubricating oil pressure pumps. Such a strainer need not
or the engine room console, or both. The scope of the remote
necessarily be engine mounted.
control features required in this case also must be clearly
7.1.12 A force feed cylinder or valve stem lubricator
presentedbythepurchasertotheenginebuilderinthepurchase
system, or both, if required by engine builder’s design, or by specification and requirements of the therein identified cogni-
the service intended, or both, or by main engine fuel intended, zant regulatory bodies must be met by the engine builder with
with both of the latter as stated by the purchaser. respect to components supplied by the engine builder.
7.1.18.3 All required engine-mounted components and pip-
7.1.13 Crankcase pressure relief valves or covers as recom-
ing for compressed control air and starting air or hydraulic oil
mended by the engine builder to meet standards of cognizant
supplied shall be engine mounted by the engine builder
marine inspection and classification authority as identified by
including, but not necessarily limited to, a duplex filter with a
the purchaser.
line lubricator for air to the starting air distributor; pilot-
7.1.14 An engine-barring device which shall be power
operated main starting air valve; pilot air distribution lines; a
driven unless clearly identified to the purchaser by the engine
starting air-reducing valve, if required; and starting air mani-
builder as required to be operated by manual effort only.
folds or headers.All such piping shall be terminated at flanges
7.1.15 An engine-mounted flywheel secured to the drive
or other fitting in a workmanlike manner for connection to
end of the crankshaft complete and sufficient to carry timing
ship’s lines by others.
marks. If required by drive system arrangement to the reduc-
7.1.19 Fuel Oil System:
tion gear (or to the propeller shafting if no reduction gear is
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