Motorcycles — Engine test code — Net power

This International Standard 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.

Motocycles — Code d'essai des moteurs — Puissance nette

General Information

Status
Published
Publication Date
20-May-2012
Current Stage
9093 - International Standard confirmed
Completion Date
18-Oct-2023
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ISO 4106:2012 - Motorcycles -- Engine test code -- Net power
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INTERNATIONAL ISO
STANDARD 4106
Fourth edition
2012-06-01
Motorcycles — Engine test code — Net
power
Motocycles — Code d’essai des moteurs — Puissance nette
Reference number
ISO 4106:2012(E)
©
ISO 2012

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ISO 4106:2012(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2012
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means,
electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISO’s
member body in the country of the requester.
ISO copyright office
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.org
Web www.iso.org
Published in Switzerland
ii © ISO 2012 – All rights reserved

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ISO 4106:2012(E)
Contents Page
Foreword .iv
Introduction . v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Symbols . 2
5 Standard reference conditions . 2
6 Tests . 3
6.1 General . 3
6.2 Measuring equipment and instrument accuracy . 3
6.3 Setting and test conditions . 3
6.4 Test procedure . 7
7 Torque, power and specific fuel consumption . 8
7.1 Calculation of measured torque, measured power and specific fuel consumption . 8
7.2 Net torque and net power . 8
7.3 Corrected net torque and corrected net power . 9
8 Test report .10
8.1 General .10
8.2 The description of test report .10
8.3 Statement of results .14
Annex A (normative) Test method for compression-ignition engines .17
Bibliography .24
© ISO 2012 – All rights reserved iii

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ISO 4106:2012(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies
(ISO member bodies). The work of preparing International Standards is normally carried out through ISO
technical committees. Each member body interested in a subject for which a technical committee has been
established has the right to be represented on t
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