Draft
International Standard
ISO/DIS 8178-4
Reciprocating internal combustion engines — Exhaust emission measurement — Part 4: Test cycles and emission calculations for different engine applications
Reference number
ISO/DIS 8178-4
Edition 5
© ISO 2026
Draft International Standard
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Under development
This Draft International Standard is in the enquiry phase with ISO members.
Will replace ISO 8178-4:2020

ISO/DIS 8178-4

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Abstract

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.

General information

Life cycle

Sustainable Development Goals

This standard contributes to the following Sustainable Development Goal

13
Climate Action

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