ASTM F1338-91(1996)
(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
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 in order to allow those considerations to be satisfied.
General Information
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Standards Content (Sample)
Designation: F 1338 – 91 (Reapproved 1996) 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 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 which ignition of the main fuel charge, as it is introduced to the
combustion chamber, shall be by the heat of compression of the
1.1 This guide covers performance and minimum scope of
charge of combustion air, during regular operation of the
assembly of all medium speed marine diesel engines intended
engine from idle speeds up to full speed, regardless of whether
for main propulsion of single or multiple screw propelled
miscellaneous methods to augment such heat of compression
marine vessels or for vessels using other than screw propeller-
are used to facilitate starting of the engine under normal
type main propulsion.
conditions or under low ambient temperature conditions or low
1.2 This guide is intended to supplement the regulations of
intake air temperature conditions. Engines that are designed to
legally constituted regulating authorities. In the event of any
operate with a continuously hot spot or bulb or other device to
conflict, which may become apparent after publication of this
facilitate ignition or combustion, or both, of low cetane fuels,
guide, with such legally constituted regulations, the latter shall
or any fuels slow to ignite or to burn, or both, shall be
take precedence, as may be applicable within the jurisdiction of
considered to be diesel engines for purposes of this guide.
such authorities and specific to each case, unless such latter
3.1.2 engine assembly—contains, but is not necessarily
regulations are formally waived by proper cognizant authority.
limited to, that apparatus secured to or applied to a basic
1.3 This guide is not intended to relieve the purchaser of the
engine, which is needed to make the basic engine operable and
obligation fully to advise the engine builder of all of the
capable of developing its rated power as indicated or to be
purchaser’s unique operational considerations to allow those
indicated on the engine nameplate.
considerations to be satisfied.
3.1.3 fuel map—a chart on which there is displayed a family
2. Referenced Documents
of curves of various constant rates of specific fuel consump-
tion, each curve of the family being plotted on a grid, the
2.1 ABS Standard:
abscissa of which is engine r/min and the ordinate of which is
Rules for Building and Classing Steel Vessels
brake horse power or brake mean effective pressure.
2.2 IEEE Standard:
3.1.4 medium speed diesel engine—all diesel engines with
Standard No. 45, Recommended Practice for Electrical
crank-shaft rotative speeds encompassed by the maximum
Installations on Shipboard
continuous speed bracket of 400 to 600 r/min (see Appendix
2.3 ISO Standard:
X1).
ISO 3046/1 Reciprocating Internal Combustion Engines—
Performance
4. Significance and Use
2.4 Code of Federal Regulations:
4.1 Comparison of brake horsepower developed and of
United States Coast Guard Regulations as Published in
specific fuel consumption rates from engine to engine may be
Code of Federal Regulations No. 46 (CFR 46)
made by use of data based upon a standard for composition of
3. Terminology an engine assembly.
4.2 The purchaser of the engine assembly will be fully
3.1 Definitions of Terms Specific to This Standard:
advised of the minimum scope of assembly which the pur-
3.1.1 diesel engine—a reciprocating or rotary engine in
chaser may rightfully expect to be encompassed by a response
to a request for quotation and to be delivered in response to a
This guide is under the jurisdiction of ASTM Committee F-25 on Ships and
purchase order unless the engine builder in the proposal or in
Marine Technology and is the direct responsibility of Subcommittee F25.11 on
the offer to sell has clearly advised otherwise.
Machinery.
Current edition approved April 15, 1991. Published December 1991.
4.3 It will be made apparent to the purchaser that additional
Available from American Bureau of Shipping, 2 World Trade Center, 106th
auxiliary and accessory equipment will be needed to supple-
Floor, New York, NY 10048.
3 ment the defined engine assembly when full consideration is
Available from IEEE, 345 E. 47th St., New York, NY 10017.
given to the application of the engine assembly as a prime
Available from ANSI, 11 W. 42nd St., 13th Floor, New York, NY 10036.
Available from Superintendent of Documents, U.S. Government Printing
mover in a specific vessel.
Office, Washington, DC 20402.
Copyright © ASTM, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959, United States.
F 1338
5. Regulations, Conventions, and Standards ments, for water-washing or other routine maintenance proce-
dures recommended by the engine builder, shall be provided.
5.1 Specific—The regulations, conventions, and standards
7.1.5 An engineered arrangement of sufficient drilled and
to which a commercial marine vessel may be subject in regard
tapped holes, properly plugged during shipment, to allow
to the main propulsion prime movers will vary depending upon
measurement of combustion air and exhaust gas temperatures
the flag of registry of the vessel.
and pressures at appropriate points in the engine assembly.
5.2 General:
5.2.1 There may be regulations, conventions, and standards 7.1.6 One or more air cooler assemblies, if required by
engine design concept and power rating, designed to accept all
and such applicable international treaties to which the country
of registry may subscribe which shall be taken as forming a of the air for combustion and scavenging and to cool such air
to appropriate temperatures as required by design of the basic
part of this guide to the extent specified herein and to the extent
they shall be deemed applicable to the vessel by the country of engine and by the predicted range of brake horsepower output
and concurrent specific fuel consumption rate range. Following
registry.
5.2.2 Typical examples applicable to vessels of the United the logic of 7.1.4, the air cooler assembly might be offered as
a remotely mounted device along with its associated turbo-
States of America registry are as follows: Institute of Electrical
and Electronic Engineers Standard No. 45 (IEEE No. 45); chargers. If so, as in the case of the turbocharger, the intended
method of mounting shall be clearly described to the prospec-
Rules of the American Bureau of Shipping; Rules of the United
tive purchaser by the engine builder so the impact on installa-
States Coast Guard as printed in various Part Numbers of Title
tion cost and responsibilities, if any, will be apparent.
46 CFR of the United States of America and formerly
commonly known as CG-115 (Marine Engineering Regula-
7.1.6.1 Such cooler assemblies, commonly referred to as
tions, also known as Sub-chapter F); and CG-259 (Electrical
intercoolers or aftercoolers, shall be arranged, if required by
Engineering Regulations, also known as Sub-chapter J).
overall engine design and application, to limit cooling or to add
heat energy to the charge of air for combustion to allow
6. Ordering Information
operation of the engine at low continuous power ranges as
6.1 Orders for machinery under this guide shall include the
indicated by the engine builder on a chart of the descriptive
following:
curves of performance of the engine (see 4.1 and 4.2).
6.1.1 ASTM designation, title, and date of this guide.
7.1.7 A jacket water-circulating pump and any other closed
6.1.2 Quantity, and
circuit fresh water pumps required for operation of the engine.
6.1.3 Packaging or packing and preservation requirements,
If this pump is not engine mounted and engine driven as
or both.
parasitic load, the specific fuel rate for the engine on the
factory test stand shall be corrected logically and accurately to
7. Minimum Scope of Assembly
increase appropriately the specific fuel rate demonstrated on
7.1 Each engine assembly to meet this guide shall include
the factory test stand and thereby to allow comparison to other
the following:
engines (see Section 8).
7.1.1 The basic power producing unit or engine, be it that
7.1.8 One or more pressure pumps for main engine lubri-
formed by an internal combustion reciprocating engine or by
cating oil supply of each engine unit and, if required by design,
an internal combustion rotary engine.
for piston cooling service. If this pump(s) is not engine
7.1.2 An engine-mounted intake manifold or manifolds to
mounted and engine driven as parasitic load, the specific fuel
conduct air for combustion to the basic engine, with such
rate for the engine on the factory test stand shall be corrected
manifold properly secured to the basic engine and properly
logically and accurately to increase appropriately the specific
gasketed for the service intended, which is the efficient
fuel rate demonstrated on the factory test stand and thereby to
conduction of air to the basic engine when it is installed in a
allow comparison to other engines (see Section 8).
marine environment for main propulsion of a vessel.
7.1.9 A full flow lubricating oil duplex discharge strainer or
7.1.3 An engine-mounted exhaust manifold properly insu-
filter for each engine unit to transmit all oil delivered to the
lated (including insulation by use of a water jacket application)
engine by the main lubricating oil pressure pump; or, if
as may be required by laws and regulations discussed in 2.2
required by engine design, lubricating oil supplied to the
herein [such as the requirements of USCG-115, paragraph
subordinate and discrete systems of the engine may be supplied
56.50-1 (k), Parts 50–60, Title 46 CFR].
via an additional separate duplex lubricating oil strainer. Such
7.1.4 One or more engine-driven and engine-mounted scav-
strainers need not necessarily be supplied as engine mounted.
enging air blowers, if required by engine design concept, or
7.1.10 An integral, lubricating oil sump, suitable for opera-
one or more single shaft assemblies of an exhaust gas-driven
tion of that engine when installed in a horizontal position but
turbine and combustion air blower, or both, if required by
of a limited capacity with respect to total oil charge. Such a
engine design concept, to provide a supply of air for scaveng-
sump may be provided with two or more openings which, if
ing or supercharging, or both, and for basic combustion of the
left open for connection to a drain, will allow use of a remote
fuel. The single-shaft exhaust gas-driven turbochargers may be
oil sump of larger capacity as suggested by the engine builder.
engine mounted or separately mounted. The intended method
of mounting of such turbochargers shall be clearly described to 7.1.11 A duplex suction strainer of mesh as recommended
the prospective purchaser by the engine builder in any response by the engine builder to be located on the suction side of the
to an inquiry so that the impact on installation cost and main lubricating oil pressure pumps. Such a strainer need not
responsibility, if any, will be apparent. Turbocharger arrange- necessarily be engine mounted.
F 1338
7.1.12 A force feed cylinder or valve stem lubricator sys- specification and requirements of the therein identified cogni-
tem, or both, if required by engine builder’s design, or by the zant regulatory bodies must be met by the engine builder with
service intended, or both, or by main engine fuel intended, with respect to components supplied by the engine builder.
both of the latter as stated by the purchaser.
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-
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-
tion gear (or to the propeller shafting if no reduction gear is to 7.1.19.1 An engine-mounted, engine-driven, fuel oil booster
be used), the flywheel shall be complete and sufficient to accept pump (service pump) shall be provided, if required, by the
mounting of the adjacent flange or coupling component. The engine builder’s design; however, such a pump may be motor
machining of the flywheel to accept the adjacent flange or driven for this class of engine and not integral with the engine
coupling component is part of an engine assembly. The assembly as shipped. It is, however, to be an item furnished and
associated set of bolts required shall not be part of an engine to be treated as a parasitic load.
assembly.
7.1.19.2 A duplex final fuel filter or strainer, as specified by
7.1.16 Propeller Thrust Bearing—NO propeller thrust bear- the engine builder, shall be supplied by the engine builder. If
ing shall be incorporated into the engine assembly for medium engine mounted, it shall be properly protected for shipment so
speed main propulsion marine diesel engines except as a result that the engine-mounted fuel distribution piping is maintained
of a specific contractual requirement placed on the engine in a thoroughly clean condition during shipment and installa-
builder as a result of negotiation with the purchaser. tion of the engine.
7.1.17 Governors: 7.1.20 Engine-Mounted Piping—All required engine-
mounted piping for jacket water, raw water, lubricating oil, fuel
7.1.17.1 The engine builder shall provide the primary en-
oil, starting air, control air or hydraulic oil, or a combination
gine speed governor. The actuator portion of the governor with
thereof, for controls shall be terminated in a workmanlike
its power unit and the speed-sensing portion shall be engine
manner in a flange or other connection arrangement on the
mounted. Nothing in
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