ISO 4106:2026

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Motorcycles - Engine test code - Net power

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ISO 4106:2026

Motorcycles - Engine test code - Net power

ISO 4106:2026

This document specifies methods for evaluating the performance of engines designed for motorcycles as defined in ISO 3833, in particular with a view to the presentation of power curves and specific fuel consumption at full load as a function of engine speed, for net power assessment.

It is applicable to reciprocating internal combustion engines (spark-ignition or compression-ignition) excluding free-piston engines and rotary piston engines, either naturally aspirated or pressure-charged and equipped with either mechanical pressure-charger or turbocharger.

Particular specifications for the test of compression-ignition engines are specified in Annex A.

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