ISO 15550-2016 PDF

Full title and description

ISO 15550:2016 — Internal combustion engines — Determination and method for the measurement of engine power — General requirements. Specifies reference conditions, measurement methods and declaration practices for engine power and related consumption values (fuel and lubricating oil) for reciprocating and rotary piston internal combustion engines in commercial production using liquid or gaseous fuels.

Abstract

ISO 15550:2016 defines the general requirements and standard reference conditions for determining and declaring engine power, fuel consumption and lubricating-oil consumption. It covers measurement methods applicable to a wide range of internal combustion engines (spark-ignition and compression-ignition, reciprocating and rotary) for land, rail, marine and vehicle propulsion applications, and provides requirements for test conditions, instrumentation, correction to reference conditions and reporting of results for both test-bed and on-site testing.

General information

• Status: Published (confirmed)
• Publication date: December 2016 (2nd edition)
• Publisher: International Organization for Standardization (ISO)
• ICS / categories: 27.020 — Internal combustion engines
• Edition / version: 2nd edition (2016)
• Number of pages: 43

Scope

This standard establishes general requirements, reference conditions and accepted methods for measuring and declaring engine power and related consumption data for commercial-production internal combustion engines using liquid or gaseous fuels. It applies to reciprocating and rotary piston engines (naturally aspirated or pressure-charged) used in land, rail traction, marine and vehicle propulsion (including motorcycles, agricultural tractors, earth-moving machinery and recreational craft up to 24 m), and may be applied where no more specific international standard exists. It covers test-bed and on-site testing, instrumentation, calibration, environmental correction procedures and reporting of results.

Key topics and requirements

• Definition of standard reference conditions for power and consumption measurements.
• Methods for determining engine power (test procedures for steady-state and specified operating points).
• Measurement and declaration of fuel consumption and lubricating-oil consumption.
• Requirements for test instrumentation, calibration, accuracy and uncertainty assessment.
• Procedures to correct measured results to reference ambient conditions.
• Guidance on test-bed versus on-site (field) testing and associated adaptations.
• Minimum reporting content and format for declared power and consumption values.
• Applicability statements covering engine types and applications (land, rail, marine, vehicles, machinery).

Typical use and users

Manufacturers of internal combustion engines and propulsion systems, engine test laboratories, certification and conformity-assessment bodies, OEMs (vehicle, marine, rail and off‑highway equipment manufacturers), regulatory agencies, R&D and performance-engineering teams, and suppliers of test equipment and instrumentation use ISO 15550 to ensure consistent, comparable and traceable measurement and declaration of engine power and consumption data.

Related standards

Commonly referenced and complementary standards include ISO 3046‑1 (reference conditions for engines), ISO 1585 and ISO 2534 (vehicle engine power and testing), ISO 4106 (motorcycle engines), ISO 9249 (earth‑moving machinery engine power), ISO 8665 (marine outboard engines) and other application‑specific ISO/ISO‑aligned standards that specify detailed test cycles or additional requirements.

Keywords

engine power measurement, internal combustion engines, reference conditions, test methods, fuel consumption, lubricating-oil consumption, test bed, on-site testing, measurement uncertainty, power declaration

FAQ

Q: What is this standard?

A: ISO 15550:2016 is an international standard that sets out general requirements and methods for measuring and declaring the power, fuel consumption and lubricating-oil consumption of internal combustion engines in commercial production.

Q: What does it cover?

A: It covers reference conditions, measurement methods, instrumentation and calibration requirements, correction to reference ambient conditions, reporting requirements and applicability to reciprocating and rotary piston engines used in land, rail, marine and vehicle propulsion applications.

Q: Who typically uses it?

A: Engine manufacturers, test laboratories, OEMs, certification and regulatory bodies, R&D teams and suppliers of engine test equipment use the standard to obtain consistent, comparable performance data.

Q: Is it current or superseded?

A: The document is the 2nd edition published in 2016 and is listed as a published/confirmed international standard. Users should check with their national standards body or ISO for any amendments or later revisions if exact current status is required.

Q: Is it part of a series?

A: ISO 15550 is a general-requirements standard used alongside more application-specific ISO standards (for example standards addressing engine testing for particular vehicle types or equipment). It is often used together with ISO documents that define reference conditions and application-specific test procedures.

Q: What are the key keywords?

A: Engine power, power measurement, fuel consumption, lubricating-oil consumption, reference conditions, test methods, measurement uncertainty.