ISO 22241-4:2023

Diesel engines — NOx reduction agent AUS 32 — Part 4: Refilling interface

This document specifies the refilling interface for the NOx reduction agent AUS 32 in conformance with ISO 22241-1, which is needed to operate converters with a selective catalytic reduction (SCR) exhaust treatment system. This document specifies the minimum functional and geometric requirements of an open refilling system, in order to ensure compatibility between the on-board refilling system and the off-board refilling system. Compatibility conditions for a sealed refilling system are provided in Annex A. This document applies to commercial vehicles and buses as defined in ISO 3833 and having a gross vehicle mass of more than 3,5 t, designed to use stationary off-board refilling systems. This document also applies to the nozzle of stationary off-board refilling systems. NOTE Throughout this document, the term “NOx reduction agent AUS 32” is abbreviated to “AUS 32”.

Moteurs diesel — Agent AUS 32 de réduction des NOx — Partie 4: Interface de remplissage

General Information

• Status: Published
• Publication Date: 15-Oct-2023
• ICS: 43.060.40 - Fuel systems
• Technical Committee: ISO/TC 22/SC 34 - Propulsion, powertrain and powertrain fluids
• Drafting Committee: ISO/TC 22/SC 34 - Propulsion, powertrain and powertrain fluids
• Current Stage: 6060 - International Standard published
• Start Date: 16-Oct-2023
• Due Date: 13-Dec-2023
• Completion Date: 16-Oct-2023

Relations

• Revises: ISO 22241-4:2019 - Diesel engines — NOx reduction agent AUS 32 — Part 4: Refilling interface
• Effective Date: 06-Jun-2022

Standards Content (Sample)

INTERNATIONAL ISO
STANDARD 22241-4
Third edition
2023-10
Diesel engines — NOx reduction agent
AUS 32 —
Part 4:
Refilling interface
Moteurs diesel — Agent AUS 32 de réduction des NOx —
Partie 4: Interface de remplissage
Reference number
ISO 22241-4:2023(E)
© ISO 2023

---------------------- Page: 1 ----------------------
ISO 22241-4:2023(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2023
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland
ii
  © ISO 2023 – All rights reserved

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ISO 22241-4:2023(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Requirements . 3
4.1 Functional requirements . . 3
4.2 Filler neck . 4
4.3 Inlet adapter. 5
4.3.1 Inlet adapter with neodymium-iron-boron (NdFeB) magnet ring . 6
4.3.2 Inlet adapter with alternative equivalent magnet field . 6
4.4 Filler cap . 11
4.5 Filler nozzle . 11
4.6 Minimum free space for refilling .12
Annex A (normative) Compatibility conditions for sealed refilling systems .15
Bibliography .18
iii
© ISO 2023 – All rights reserved

---------------------- Page: 3 ----------------------
ISO 22241-4:2023(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 that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the d
...

INTERNATIONAL ISO
STANDARD 22241-4
Third edition
Diesel engines — NOx reduction agent
AUS 32 —
Part 4:
Refilling interface
Moteurs diesel — Agent AUS 32 de réduction des NOx —
Partie 4: Interface de remplissage
PROOF/ÉPREUVE
Reference number
ISO 22241-4:2023(E)
© ISO 2023

---------------------- Page: 1 ----------------------
ISO 22241-4:2023(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2023
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland
ii
PROOF/ÉPREUVE © ISO 2023 – All rights reserved

---------------------- Page: 2 ----------------------
ISO 22241-4:2023(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Requirements . 3
4.1 Functional requirements . . 3
4.2 Filler neck . 4
4.3 Inlet adapter. 5
4.3.1 Inlet adapter with neodymium-iron-boron (NdFeB) magnet ring . 6
4.3.2 Inlet adapter with alternative equivalent magnet field . 6
4.4 Filler cap . 10
4.5 Filler nozzle . 11
4.6 Minimum free space for refilling .12
Annex A (normative) Compatibility conditions for sealed refilling systems .15
Bibliography .18
iii
© ISO 2023 – All rights reserved PROOF/ÉPREUVE

---------------------- Page: 3 ----------------------
ISO 22241-4:2023(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 that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directiv
...

ISO/PRF 22241-4:2023(E)
ISO/TC 22/SC 34
Secretariat: ANSI
Date: 2023-0408-10
Diesel engines — NOx reduction agent AUS 32 —
Part 4:
Refilling interface
Moteurs diesel — Agent AUS 32 de réduction des NOx —
Partie 4: Interface de remplissage
FDIS stage

---------------------- Page: 1 ----------------------
ISO/PRF 22241-4:2023(E)
© ISO 2023
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this
publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical,
including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can
be requested from either ISO at the address below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: + 41 22 749 01 11
EmailE-mail: [e-mail]
Website: www.iso.org
Published in Switzerland
ii
ii © ISO 2023 – All rights reserved
 © ISO 2023 – All rights reserved

---------------------- Page: 2 ----------------------
ISO/PRF 22241-4:2023(E)
Contents
Foreword . iv
Part 4: Refilling interface . 1
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Requirements . 3
4.1 Functional requirements . 3
4.2 Filler neck . 5
4.3 Inlet adapter . 6
4.3.1 Inlet adapter with neodymium-iron-boron (NdFeB) magnet ring . 8
4.3.2 Inlet adapter with alternative equivalent magnet field . 8
4.4 Filler cap . 15
4.5 Filler nozzle . 15
4.6 Minimum free space for refilling . 17
Annex A (normative) Compatibility conditions for sealed refilling systems. 21
Bibliography . 25

© ISO 2023 – All rights reserved iii
© ISO 2023 – All rights reserved iii

---------------------- Page: 3 ----------------------
ISO/PRF 22241-4:2023(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 that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO
collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria nee
...