Revised Standard from Last Update.

NATIONAL FOREWORD

This Indian Standard (Part 3) (First Revision) which is identical with ISO 8178-3 : 2019 ‘Reciprocating internal combustion engine - Exhaust emission measurement Part 3: Test procedure for measurement of exhaust gas smoke emissions from compression ignition engines using a filter type smoke meter’, issued by International Organization for Standardization (ISO) was adopted by the Bureau of Indian Standards on recommendations of the Automotive Prime Movers Transmission Systems and Internal Combustion Engines Sectional Committee and approval of the Transport Engineering Division Council.

This standard was first published in 2016. The original version was identical adoption of ISO 8178-3 : 1994. This first revision of theis standard has been undertaken to harmonize it with ISO 8178-3 : 2019.

The major changes in this revision are as follows:

a) Smoke measurement by an opacimeter has been removed; this will be handled in ISO 8178-9; and

b) Definitions of exhaust gas components related to exhaust gas smoke has been added.