ISO/TC 70 - Internal combustion engines

This document establishes requirements for reciprocating internal combustion engines to minimize the risk of fire caused by the engine, its components and the auxiliaries fitted to it. Where necessary, special requirements can be given for particular engine applications. This document applies to reciprocating internal combustion engines for land and marine use, excluding engines used in an explosive atmosphere, road vehicles and aircraft. This document can also apply to engines used to propel small craft and for other applications where no suitable International Standard for fire protection on reciprocating internal combustion engines exists. For engine applications excluded above, this document can be used as the basis for engine application standards.

This document establishes a vocabulary for ignition systems of reciprocating internal combustion engines. In this document, the terms are classified as follows: a) types of ignition system; b) conventional ignition systems; c) electronic ignition systems; d) computer-controlled ignition systems; e) parameters for ignition systems. NOTE ISO 2710-1 gives a classification of reciprocating internal combustion engines and defines basic terms and definitions of such engines and their characteristics.

This document defines terms relating to lubricating systems.

This document specifies the measurement method of sound power level for reciprocating internal combustion engines, which is a survey method for use in situ. This document applies to all reciprocating internal combustion engines falling within the field of application of ISO 3046-1 and other internal combustion engines where no suitable International Standard exists. NOTE In this document, reciprocating internal combustion engines are referred to as engines unless otherwise explained.

This document specifies the measurement and evaluation methods for gaseous and particulate exhaust emissions from reciprocating internal combustion engines (RIC engines) in the field. This document is applicable when the emissions from RIC engines used in non-road machinery, industrial equipment, marine installations, generating sets, diesel rail traction or similar machinery applications need to be measured in the field. Clause 4 applies for the conduct of discrete-mode steady-state gaseous or particulate emission measurements at a single operating point or conduct a weighted cycle-based test in the field. Clause 5 applies where it is necessary to assess gaseous emissions performance of engines during typical in-service operation under field conditions using portable emission measurement systems (PEMS).

This document specifies a method of testing full‐flow lubricating oil filters for internal combustion engines to determine their ability to withstand a static pressure objective and to determine their burst pressure and the failure mode concerned. It does not apply to filters for use in aeronautical applications or plastic components.

This document specifies fuels whose use is recommended for performing the exhaust emission test cycles given in ISO 8178-4. It is applicable to reciprocating internal combustion engines for mobile, transportable and stationary installations excluding engines for vehicles primarily designed for road use. This document is applicable to engines used, e.g. earth-moving machines and generating sets, and for other applications.

This document specifies the principal characteristics of alternating current (a.c.) generators under the control of their excitation control system when used for reciprocating internal combustion (RIC) engine driven generating set applications and supplements the requirements given in IEC 60034-1. It covers the use of such a.c. generators for land and marine applications, excluding generating sets used on aircraft or to propel land vehicles and locomotives. NOTE For some specific applications (e.g. essential hospital supplies, high-rise buildings, operation parallel with the grid), supplementary requirements can be necessary. The provisions of this document can be regarded as the basis for establishing any supplementary requirements. For a.c. generating sets driven by other reciprocating-type prime movers (e.g. steam engines) the provisions of this document can be used as basis for establishing these requirements.

This document specifies requirements for handle starting equipment used on reciprocating internal combustion engines for land, rail and marine use, excluding engines used to propel road vehicle and aircraft. It can be applied to engines used to propel road construction, earth moving machines and other applications where no suitable International Standards exist. In addition to the technical safety requirements, this document describes procedures for checking adherence to these requirements.

This document specifies the test cycles, the test procedures and the evaluation of gaseous and particulate exhaust emissions from reciprocating internal combustion (RIC) engines coupled to a dynamometer. With certain restrictions, this document can also be used for measurements at site. The tests are carried out under steady-state and transient operation using test cycles which are representative of given applications. This document is applicable to RIC engines for mobile, transportable and stationary use, excluding engines for on-road transport of passengers and goods. It can be applied to engines for non-road use, e.g. for earth-moving machines, generating sets and for other applications. For engines used in machinery covered by additional requirements (e.g. occupational health and safety regulations, regulations for power plants), additional test conditions and special evaluation methods can apply.

This document specifies the measurement methods for gaseous and particulate exhaust emissions from reciprocating internal combustion (RIC) engines on a test bed, necessary for determining one weighted value for each exhaust gas pollutant. Various combinations of engine load and speed reflect different engine applications (see ISO 8178‑4). This document is applicable to RIC engines for mobile, transportable and stationary use, excluding engines for motor vehicles primarily designed for road use. This document can be applied to engines used, for example, for earth-moving machines, generating sets and for other applications.

This document specifies a method of testing the ability of full-flow lubricating oil filters manufactured with metal pressure vessel materials for internal combustion engines to withstand an internal pressure surge. Normally surges occur when an engine is started from cold, and cyclic internal pressure variations experienced during operation. These tests are intended for application to spin-on type filters and detachable filters with disposable elements. The tests can be applied to other filters, if thought applicable, by agreement between the filter manufacturer and the purchaser. NOTE This test is not intended to replace simulated environmental testing (e.g. at very low temperatures). If such testing is required, it will be the subject of negotiation between the supplier and customer.

This document specifies the survey method, which is the measurement method of the sound power level for reciprocating internal combustion engines. This document applies to all reciprocating internal combustion engines falling within the field of application of ISO 3046‑1 and other internal combustion engines where no suitable International Standard exists. NOTE In this document, reciprocating internal combustion engines are referred to as engines unless otherwise explained.

This document specifies general requirements for overspeed limiting devices used for the protection of reciprocating internal combustion (RIC) engines and their driven machinery. It applies to reciprocating internal combustion engines for land, rail traction and marine use, excluding engines used in road vehicles and aircrafts.

This document specifies the engineering method, which is the measurement method of the sound power level for reciprocating internal combustion engines. This document applies to all reciprocating internal combustion engines falling within the field of application of ISO 3046-1 and other internal combustion engines where no suitable International Standard exists. NOTE In this document, reciprocating internal combustion engines are referred to as engines unless otherwise explained.

This document specifies the measurement procedures and test cycles for the evaluation of smoke emissions from compression ignition engines using an opacimeter. The tests are carried out under steady-state and transient operation using tests cycles which are representative of a given application. The smoke testing is conducted using opacimeter-type smoke meters which operate on the light extinction principle. The purpose of this document is to define the smoke test cycles and the methods used to measure the opacity and for the determination of the light absorption coefficient. It allows the use of either full-flow or partial-flow opacimeters and corrects for differences in rise time between the two types of opacimeters. Specifications of the apparatus for the measurement of opacity can be found in ISO 11614. The test procedures and measurement techniques described in this document are applicable to reciprocating internal combustion (RIC) engines in general. Annex D, Annex E, Annex F and Annex G each contains a test cycle that is relevant only for those specific applications listed in the first subclause of that annex. Where possible, the smoke test cycle described in the annex utilizes the engine and machine categories developed in ISO 8178‑4. For certain categories of non-road engines "at site" rather than "test bed" smoke test procedures can prove to be necessary. For engines used in machinery covered by additional requirements (e.g. occupational health and safety regulations), additional test conditions and special evaluation methods can apply.

This document defines terms relating to the characteristics of engines and their components relevant to maintenance activities. This document gives a classification of terms according to reasons for their use and defines typical means, failures and procedures resulting in or from engine maintenance.

This document specifies a method for the measurement of smoke from exhaust gas of reciprocating internal combustion (RIC) engines at a steady state condition. The method evaluates the soot content by measurement of the blackening of a filter and derivation of black carbon mass concentration (mg/m3) from FSN. Where necessary, individual requirements may be specified for particular engine applications. This document is applicable to RIC engines for mobile, transportable and stationary use, excluding engines for on-road transport of passengers and goods. It can be applied to engines for non-road use, e.g. for earth-moving machines, generating sets and for other applications. For engines used in machinery covered by additional requirements (e.g. occupational health and safety regulations, regulations for power plants) additional test conditions and special evaluation methods can apply.

This document specifies design and performance criteria arising out of the combination of a reciprocating internal combustion (RIC) engine and an alternating current (a.c.) generator when operating as a unit. This unit can run paralleling or not to the grid. It applies to a.c. generating sets driven by RIC engines for land and marine use, excluding generating sets used on aircraft or to propel land vehicles and locomotives. For some specific applications (e.g. essential hospital supplies and high-rise buildings), supplementary requirements can be necessary. The provisions of this document are a basis for establishing any supplementary requirements. For generating sets driven by other reciprocating-type prime movers (e.g. steam engines), the provisions of this document can be used as a basis for establishing these requirements.

This document specifies the principal characteristics of Reciprocating Internal Combustion (RIC) engines when used for alternating current (a.c.) generating set applications. It applies to RIC engines for a.c. generating sets for land and marine use, excluding generating sets used on aircraft or to propel land vehicles and locomotives. For some specific applications (e.g. essential hospital supplies, high rise buildings), supplementary requirements can be necessary. The provisions of this document can be regarded as the basis for establishing any supplementary requirements. The terms which define the speed governing and speed characteristics of RIC engines are listed and explained where they apply specifically to the use of the engine for driving a.c. generators. For other reciprocating-type prime movers (e.g. steam engines), the provisions of this document can be used as a basis for establishing these requirements.

ISO 8178-6:2018 specifies a data format for reporting the measurement results of exhaust emissions from RIC engines for mobile, transportable and stationary use, excluding engines for motor vehicles primarily designed for road use. It includes basic information of the engine being tested. Equivalent data formats including those that are electronically generated can be used as long as the required engine, test cell and test data information is made available. ISO 8178-6:2018 applies to measurement in the laboratory and, where applicable, at site. For engines used in machinery covered by additional requirements (e.g. occupational health and safety regulations, dust regulations for powerplants), additional test conditions and special evaluation methods can apply. NOTE Since the report format defined in this document is intended to be applicable to all types of internal combustion engines, some items are, in certain cases, not necessary for specific engines and/or tests, especially when measuring on site. On the other hand, some additional items can be necessary according to test purposes. Deletion and addition of items to be reported are based on agreement between the parties involved.

ISO 8528-1:2018 defines various classifications for the application, rating and performance of generating sets consisting of a Reciprocating Internal Combustion (RIC) engine, Alternating Current (a.c.) generator and any associated controlgear, switchgear and auxiliary equipment. ISO 8528-1:2018 applies to a.c. generating sets driven by RIC engines for land and marine use, excluding generating sets used on aircraft or to propel land vehicles and locomotives. For some specific applications (e.g. essential hospital supplies, high-rise buildings), supplementary requirements can be necessary. The provisions of this document can be the basis for establishing any supplementary requirements. For other reciprocating-type prime movers (e.g. sewage-gas engines, steam engines), the provisions of this document can be used as a basis for establishing these requirements. Generating sets meeting the requirements of this document are used to generate electrical power for continuous, peak-load and standby applications. The classifications laid down in this document are intended to help understanding between manufacturer and customer.

ISO 2710-1:2017 defines the basic terms relating to the design and operation of reciprocating internal combustion (RIC) engines. Further terms relating to components and systems of RIC engines are defined in ISO 7967 (all parts), and performance is defined in ISO 15550, ISO 14396 and in ISO 3046 (all parts).

ISO 8528-9:2017 describes a procedure for measuring and evaluating the external mechanical vibration behaviour of generating sets at the measuring points stated in this document. It applies to RIC engine driven a.c. generating sets for fixed and mobile installations with rigid and/or resilient mountings. It is applicable for land and marine use, excluding generating sets used on aircraft or those used to propel land vehicles and locomotives. For some specific applications (essential hospital supplies, high rise buildings, etc.) supplementary requirements may be necessary. The provisions of this document are intended to be regarded as a basis for such applications. For generating sets driven by other reciprocating-type prime movers (e.g. sewage gas engines, steam engines), the provisions of this document are intended to be regarded as a basis for such applications.

ISO 8528-7:2017 specifies the requirements and parameters for the specification and design of a reciprocating internal combustion (RIC) engine driven generating set, with reference to the definitions given in ISO 8528‑1 to ISO 8528‑6. It applies to alternating current (a.c.) generating sets driven by RIC engines for land and marine use, excluding generating sets used on aircraft or to propel land vehicles and locomotives. For some specific applications (for example, essential hospital supplies, high-rise buildings, etc.) supplementary requirements may be necessary. The provisions of this document are intended to be regarded as a basis. For other reciprocating-type prime movers (e.g. sewage gas engines, steam engines), the provisions of this document are intended to be used as a basis.

ISO 4548-12:2017 specifies a multi-pass filtration test with continuous contaminant injection and using the online particle counting method for evaluating the performance of full-flow lubricating oil filters for internal combustion engines. The scope of this document is limited to steady state conditions and does not address fluctuations in the flow rate. The test procedure determines the contaminant capacity of a filter, its particulate removal characteristics and differential pressure. This test is intended for application to filter elements with an efficiency of less than 99 % at particle size greater than 10 μm. NOTE Several test flow loops built into one test rig, or several test rigs, would be necessary to cover the complete flow range of 2 l/min to 600 l/min.

1.1 ISO 15550:2016 specifies standard reference conditions and methods of declaring the power, fuel consumption, lubricating oil consumption and test methods for internal combustion engines in commercial production using liquid or gaseous fuels. It is applicable to the following: a) reciprocating internal combustion (RIC) engines (spark-ignition or compression-ignition engines) but excluding free piston engines; b) rotary piston engines. These engines can be naturally aspirated or pressure-charged either using a mechanical pressure-charger or turbocharger. 1.2 ISO 15550:2016 is applicable to engines used for the following: a) land, rail-traction and marine use as defined in ISO 3046‑1; b) the propulsion of automotive vehicles as defined in ISO 1585 and ISO 2534; c) motorcycles as defined in ISO 4106; d) the propulsion of agricultural tractors and machines e) the propulsion of earth-moving machinery as defined in ISO 9249; f) the propulsion of recreational craft or other small marine craft up to 24 m hull length as defined in ISO 8665. ISO 15550:2016 can be applied to engines used to propel road construction machines, industrial trucks and for other applications where no suitable International Standard for these engines exists. It also can be applied to tests performed both on a test bed at a manufacturer's works as well as on site.

ISO 8528-13:2016 specifies the safety requirements for reciprocating internal combustion (RIC) engine driven generating sets up to 1 000 V consisting of an RIC engine, an alternating current (AC) generator including the additional equipment required for operating, e.g. controlgear, switchgear, auxiliary equipment. It is applicable to generating sets for land and marine use (domestic, recreational and industrial application). It is not applicable to generating sets used on board of seagoing vessels and mobile offshore units as well as on aircraft or to propel road vehicles and locomotives. NOTE This part of ISO 8528 does not apply to arc welding equipment (IEC 60974 series). The special requirements needed to cover operation in potentially explosive atmospheres are not covered in this part of ISO 8528. The hazards relevant to RIC engine driven generating sets are identified in Annex A. ISO 8528-13:2016 deals with the special requirements of test and safety design which should be observed in addition to the definitions and requirements in ISO 8528-1, ISO 8528-2, ISO 8528-3, ISO 8528-4, ISO 8528-5 and ISO 8528-6, where applicable. It specifies safety requirements in order to protect the user from danger.

ISO 8528-8:2016 defines design requirements, minimum performances and type tests for low-power generating sets driven by reciprocating internal combustion engines for land and marine use (domestic, recreational and industrial application), excluding generating sets used on aircraft. It concerns mainly low-power generating sets driven by reciprocating internal combustion engines for the generation of single or multiphase alternating current or direct current up to 500 V. The generating sets are standard manufactured sets. In this part of ISO 8528, "low-power" is taken to mean rated power of a magnitude up to approximately 10 kW/50 Hz, 12 kW/60 Hz. Low-power generating sets, for the purpose of this International Standard, are determined by the following special features: - the users normally are laymen (for further details, see 3.1); - the complete generating set is usually transportable or mobile; - the electrical output is connected by means of plugs, sockets and screwed terminal except for extra low voltages; - the generating set is ready for use without any additional installation work by the user. Generating sets for special applications or of higher rated power conforming to the above special features may, by agreement between manufacturer and customer, be tested in accordance with this part of ISO 8528. If supplementary stipulations are required for certain applications, this is to be done taking this part of ISO 8528 as a basis. ISO 8528-8:2016 deals with the special requirements of design and test which are observed in addition to the definitions and requirements laid down in ISO 8528-1, ISO 8528-2, ISO 8528-3, ISO 8528-4, ISO 8528-5 and ISO 8528-6, where applicable. ISO 8528-8:2016 does not deal with safety requirements in order to protect the user from dangers which are laid down in ISO 8528‑13. NOTE This International Standard does not apply to arc welding equipment (IEC 60974 series).

ISO 4548-14:2016 specifies a method of testing the ability of full-flow lubricating oil filters manufactured with composite pressure vessel materials for internal combustion engines to withstand an internal pressure surge and cyclic internal pressure variations experienced in the application at specified operating temperatures. These tests are intended for application to spin-on type filters and detachable filters with disposable elements constructed of composite materials.

ISO/TS 19425:2015 specifies the measurement method and requirements for combustion air inlet noise of air cleaners which are installed on reciprocating internal combustion engines, including laboratory measurement (engineering method and survey method) and site measurement (survey method). ISO/TS 19425:2015 applies to all air cleaners installed on reciprocating internal combustion engines (reciprocating internal combustion engine is referred to as engine except particular explanation in the following text) falling within the field of application of ISO 3046‑1 and/or other air induction installation.

ISO 8178-8:2015 specifies the parameters to be applied for the determination of which engine specifications can be included in an engine group and for the selection of the parent engine of the group. It can be applied for applications that might require modification or adjustment to suit at-site operating conditions. Such applications include stationary engines and engines for shipping.

ISO 8178-7:2015 specifies the parameters to be applied for the determination of which engine specifications may be included in an engine family and for the selection of the parent engine of the family. ISO 8178-7:2015 is applicable to reciprocating internal combustion engines for land, rail traction, and marine use, excluding engines for motor vehicles primarily designed for on-road operation. It may be applied to engines for power production and/or propulsion, e.g. agricultural equipment, road construction and earth moving machines, industrial trucks, generating sets, etc.

ISO 7967-11:2014 establishes a vocabulary for fuel systems of reciprocating internal combustion engines. Also, in ISO 7967-11:2014, the terms and the definitions are classified as follows: ? fuel supply system (3.1); ? carburetor (3.2); ? fuel injection system (3.3). ISO 2710‑1 gives a classification of reciprocating internal combustion engines and denotes the basic terms and definitions of such engines and their characteristics.

ISO 7967-12:2014 establishes a vocabulary for emission control systems of reciprocating internal combustion engines. ISO 2710‑1 gives a classification of reciprocating internal combustion engines and denotes basic terms and definitions of such engines and their characteristics. In this part of ISO 7967, terms are classified as the following: a) exhaust emission matter; b) exhaust emission control system and device; c) parameters for exhaust emission control system.

ISO 4548-15:2014 specifies a method of testing the structural integrity of full-flow lubricating oil filters to withstand engine vibrations. This test is intended for application to spin-on type filters and detachable filters with disposable elements with a maximum flow rate of 100 L/min. Upon agreement between manufacturer and purchaser, this test method can be applied to filters with higher flow rates. This test method is intended for test parts made from composite materials that experience mechanical property changes within the temperature range experienced in service. The test can be applied to filters with other temperature sensitive materials if thought applicable by agreement between the filter manufacturer and the purchaser.

ISO 15619:2013 specifies the measurement method and requirements for exhaust silencers which is installed on reciprocating internal combustion engines, including laboratory measurement and site measurement.

ISO 4548-13:2013 specifies a method of testing full-flow lubricating oil filters for internal combustion engines to determine their ability to withstand a static pressure objective at high and cold temperatures and to determine their burst pressure and the failure mode. It applies to all oil filters, for example spin-on ones and filters made of temperature sensitive materials. It applies to new filters and filters returned from endurance tests.

ISO 4548.7:2012 specifies a method of testing the constructional integrity of full-flow lubricating oil filters to withstand engine vibrations. This test is intended for application to spin-on type filters and detachable filters with disposable elements with a maximum flow rate of 100 l/min. This test method is intended for test parts made from materials that do not experience mechanical property changes within the temperature range experienced in service. The test may be applied to other filters if thought applicable by agreement between the filter manufacturer and the purchaser.

ISO 7967-3:2010 defines terms relating to the valves, camshaft drive and actuating mechanisms of reciprocating internal combustion engines.

ISO 3046-4:2009 establishes a classification for the requirements and parameters of speed-governing systems and specifies terms and definitions of typical engine speeds for reciprocating internal combustion (RIC) engines. Where necessary, individual requirements are given for particular engine applications. ISO 3046-4:2009 applies to RIC engines for land, rail-traction and marine use, excluding engines used to propel road-construction and earth-moving machines, agricultural and industrial types of tractors, road vehicles and aircraft. Also excluded are self-governing engines and those engines requiring only maximum speed or maximum fuel delivery limitation. ISO 3046-4:2009 defines requirements for compression–ignition oil engines (diesel engines). For spark ignition engines and dual fuel engines, special requirements can apply.

ISO 4548-9:2007 specifies methods of measuring the effectiveness of either inlet or outlet anti-drain valves if fitted to a full-flow lubricating oil filter of the "spin-on" or "easy change" type, for internal combustion engines.

ISO 3046-3:2006 specifies the common measurement techniques of the main performance parameters of reciprocating internal combustion engines, in addition to the basic requirements defined in ISO 15550. This is to ensure that the required accuracy of measurement is achieved for comparison of the measured values with those values specified by the engine manufacturer. Where necessary, individual requirements may be given for particular engine applications. ISO 3046-3:2006 applies to reciprocating internal combustion engines for land, rail-traction and marine use. It may be applied to engines used to propel road construction machines, industrial trucks and for other applications where no suitable International Standards for these engines exist.

ISO 21006:2006 specifies how to make a declaration of the engine weight (mass) for internal combustion engines. For the purposes of this standard, the word weight is used as the direct equivalent of the word mass. ISO 21006:2006 concerns reciprocating internal combustion engines (spark-ignition or compression ignition engines) but excluding free piston engines, and rotary piston engines. NOTE These engines may be naturally aspirated or pressure-charged, either by a mechanical pressure-charger or a turbocharger. ISO 21006:2006 applies to engines for land, rail-traction and marine use, the propulsion of automotive vehicles, propelling (or powering) non-road mobile machinery, motorcycles, the propulsion of agricultural tractors and machines, the propulsion of earth-moving machinery as defined in ISO 6165, and the propulsion of recreational or other small marine craft of full length up to 24 m . In addition, ISO 21006:2006 may be applied to engines used to propel road-construction machines, industrial trucks and for other applications where no suitable International Standard for these engines exists.

ISO 6415:2005 specifies the essential dimensions necessary for interchangeability of spin-on filters of the full-flow type for the filtration of lubricating oil for internal combustion engines. It also gives the designation and marking of these filters.

ISO 8528-4:2005 specifies the criteria for controlgear and switchgear for generating sets with reciprocating internal combustion engines. It applies to Alternating Current (a.c.) generating sets driven by Reciprocating Internal Combustion (RIC) engines for land and marine use excluding generating sets used on aircraft or to propel land vehicles and locomotives. For some specific applications (e.g. essential hospital supplies and high-rise buildings), supplementary requirements may be necessary. The provisions of ISO 8528-4:2005 should be regarded as a basis for establishing any supplementary requirements. For generating sets driven by other prime movers (e.g. steam engines) ISO 8528-4:2005 should be regarded as a basis for establishing these requirements.

ISO 8528-6:2005 specifies the test methods to be used for characterizing an entire generating set. It applies to alternating current (a.c.) generating sets driven by reciprocating internal combustion (RIC) engines for land and marine use, excluding generating sets used on aircraft or to propel land vehicles and locomotives. For some specific applications (e.g. essential hospital supplies, high-rise buildings) supplementary requirements may be necessary. The provisions of ISO 8528-6:2005 are intended as a basis for establishing any supplementary requirements. For a.c. generating sets driven by other reciprocating type prime movers (e.g. steam engines), ISO 8528-6:2005 is intended as a basis for establishing these requirements.

Specifies criteria, including performance and test methods, for rotary uninterruptible power systems arising out of a combination of mechanical and electrical rotating machines. Applies to power supplies primarily designed for supplying uninterrupted a.c. power to the consumer.

ISO 14314:2004 specifies the safety requirements for RIC engine re-coil starting equipment intended for use on reciprocating internal combustion engines for land, rail and marine use, excluding engines intended for use to propel road vehicles and aircraft. It may be applied to engines intended for use to propel construction and earth-moving machines and for other applications where no other suitable International Standards exist. In addition to the technical safety requirements, it also contains the method of checking the adherence to these requirements. This International Standard only addresses the hazards associated with the installation and operation of re-coil starting equipment. It is primarily directed at machines which are manufactured after the date of publication of this International Standard.

ISO 14396 specifies the additional and method requirements for determining the power of reciprocating internal combustion (RIC) engines when presented for an exhaust emission test in accordance with ISO 8178, to the basic requirements defined in the "Core" standard ISO 15550. It also specifies the power correction method for the confirmation of engine power for pre-set engines under variable atmospheric conditions. These corrections do not apply to the definition of the exhaust emission values which are in all cases only related to the uncorrected engine power. ISO 14396 applies to RIC engines for land, rail traction and marine use excluding engines for motor vehicles primarily designed for on-road use. It may be applied to engines used to propel e.g. road construction and earth-moving machines, industrial trucks and for other applications.