SAE J3046/1_199411

1 Scope
   1.1 Rationale
2 References
   2.1 Applicable Publications
        2.1.1 ISO Publications
3 Definitions
   3.1 Auxiliary
        3.1.1 Dependent Auxiliary
        3.1.2 Independent Auxiliary
        3.1.3 Essential Auxiliary
        3.1.4 Nonessential Auxiliary
   3.2 Engine
        3.2.1 Engine Adjustment
        3.2.2 Nonadjusted Engine
        3.2.3 Engine Speed
        3.2.4 Declared Engine Speed
   3.3 Power and Load
        3.3.1 Declared Power
        3.3.2 Indicated Power
        3.3.3 Brake Power
        3.3.4 Continuous Power
        3.3.5 Overload Power
        3.3.6 Fuel Stop Power
        3.3.7 ISO Power
        3.3.8 ISO Standard Power
        3.3.9 Service Power
        3.3.10 Service Standard Power
        3.3.11 Power Adjustment
        3.3.12 Power Correction
        3.3.13 Load
   3.4 Consumption and Delivery
        3.4.1 Fuel Consumption
        3.4.2 Specific Fuel Consumption
        3.4.3 ISO Specific Fuel Consumption
        3.4.4 Fuel Delivery
        3.4.5 Specific Fuel Delivery
        3.4.6 Lubricating Oil Consumption
   3.5 Tests
        3.5.1 Acceptance Test
        3.5.2 Type Test
        3.5.3 Special Test
4 Symbols
5 Other Regulations and Additional Requirements
6 Standard Reference Conditions
7 Auxiliaries
8 Declarations of Power
   8.1 General
        8.1.1 Purpose of Statement of Power
        8.1.2 Power and Torque
        8.1.3 Engine With Integral Gearing
   8.2 Types of Power
   8.3 Types of Power Application
   8.4 Types of Statement of Power
9 Declarations of Fuel Consumption
   9.1 Fuel Consumption
   9.2 Calorific Value of Fuels
        9.2.1 Liquid-Fuel Engines
        9.2.2 Gas Engines
   9.3 Specific Fuel Consumption Declarations
10 Declarations of Lubricating Oil Consumption
11 Information to be Supplied by the Customer
12 Information to be Supplied by the Engine Manufacturer
13 Methods of Power Adjustment and Specific Fuel
   Consumption Recalculation
   13.1 General
   13.2 Application
   13.3 Adjustment of Power for Ambient Conditions
   13.4 Recalculation of Fuel Consumption for Test or Site
        Ambient Conditions for Adjusted Engines
14 Method of Power Correction
   14.1 Correction Factor alpha[a] for Naturally Aspirated
        and Pressure-Charged Spark-Ignition Engines
   14.2 Correction Factor alpha[a] for Compression-Ignition
        Engines
        14.2.1 Atmospheric Factor, f[a]
        14.2.2 Engine Factor, f[a]
   14.3 Other Types of Engine
15 Test Methods
   15.1 Designation of Tests
   15.2 Extent of Tests
   15.3 Measurement Techniques
   15.4 Test Condition
   15.5 Test Procedures
        15.5.1 Acceptance Tests
        15.5.2 Type Tests
        15.5.3 Special Tests
   15.6 Power Adjustment, Specific Fuel Consumption
        Recalculation, and Power Correction
        15.6.1 Adjusted Engines
        15.6.2 Nonadjusted Engines (Preset Engines)
16 Test Report
Appendix A Examples of Auxiliaries Which May be Fitted
Appendix B Tables for Determination of Water Vapor Pressure,
           Ratios, and Factors
Appendix C Examples of Power Adjustment and Specific Fuel
           Consumption Recalculation from Standard Reference
           Conditions or Substitute Reference Conditions to
           Site Ambient Conditions
Appendix D Examples of Power Correction for Nonadjusted Engines
           (Preset Engines)
Appendix E Example of Power Adjustment from Site Ambient
           Conditions to Test Ambient Conditions and Simulation
           Of Site Ambient Conditions for Adjusted Engines

Describes standard reference conditions and methods of declaring the power, fuel consumption, lubricating oil consumption, and test methods of reciprocating internal combustion (RIC) engines in commercial production using liquid or gaseous fuels.

This part of ISO 3046 specifies standard reference conditions and methods of declaring the power, fuel consumption, lubricating oil consumption, and test methods for reciprocating internal combustion (RIC) engines in commercial production using liquid or gaseous fuels. Where necessary, individual requirements are given for particular engine applications.This part of ISO 3046 covers RIC engines for land, rail-traction, and marine use, excluding engines used to propel agricultural tractors, road vehicles, and aircraft.This part of ISO 3046 may be applied to engines used to propel road construction and earthmoving machines, industrial trucks, and for other applications where no suitable International Standard for these engines exists.This part of ISO 3046 may be applied to tests on a test bed at the manufacturer\'s works and to tests on site (see 15.4.4).