ISO 21755-3:2025
ISO 21755-3:2025

ISO 21755-3:2025

November 2025
International standard Current

Motorcycles - Measurement method for evaporative emissions - Part 3: VT-SHED test procedure

This document specifies a basic measurement method by using the variable temperature sealed housing for evaporative determination (VT-SHED) test procedure for evaporative emissions from motorcycles. It is applicable to motorcycles equipped with a spark ignition engine (four-stroke engine, two-stroke engine or rotary piston engine).

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International ISO standards

Publication date

November 2025

Number of pages

20 p.

Reference

ISO 21755-3:2025

ICS Codes

13.040.50   Transport exhaust emissions
43.140   Motorcycles and mopeds

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1
Sumary
Motorcycles - Measurement method for evaporative emissions - Part 3: VT-SHED test procedure

This document specifies a basic measurement method by using the variable temperature sealed housing for evaporative determination (VT-SHED) test procedure for evaporative emissions from motorcycles. It is applicable to motorcycles equipped with a spark ignition engine (four-stroke engine, two-stroke engine or rotary piston engine).

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