ISO 22760-4:2024/Amd 1:2026

Overview

ISO 22760-4:2024/Amd 1:2026 is an amendment to the international standard developed by ISO, focusing on road vehicles that utilize Dimethyl Ether (DME) as a fuel. This amendment applies specifically to Part 4 of the series, which addresses the requirements and marking guidelines for fuel system components, notably the level indicator. As the adoption of DME as an alternative fuel source grows, the accurate identification and compliance of components in DME fuel systems is becoming increasingly important for manufacturers, certification bodies, and regulatory authorities in the automotive sector.

Key Topics

• Mandatory Fuel Type Identification: The amendment updates the marking requirements, making it mandatory for level indicator components to clearly state the type of fuel they are compatible with. This change ensures that critical information is always visible and eliminates ambiguities in multi-fuel systems.
• Component Traceability: The standard specifies the information that must be marked on DME fuel system components to support traceability, quality control, and regulatory conformance. This includes:
  • Manufacturer or agent identification (name, trademark, or symbol)
  • Model or part number designation
  • Working pressure and, if relevant, temperature range
  • Clearly marked type of fuel (now mandatory)
• Recommended Markings: While some identifiers are required, others are recommended for facilitating installation, safety verification, and after-sales support. These include flow direction, electrical ratings, agency certification symbols, type approval numbers, serial number or date codes, and reference to ISO 22760-4:2024.

Applications

The amendment holds practical value for a range of stakeholders in the automotive supply chain and regulatory environments:

• Manufacturers: Enables correct specification, marking, and documentation of DME fuel system components, especially level indicators, ensuring components are accurately labeled for intended use.
• Installers and Service Technicians: Enhances safety and minimizes installation errors by providing clear component data, improving maintenance, replacement, and inventory management processes.
• Certification Bodies and Inspectors: Simplifies the verification process by standardizing information for compliance evaluation and type approval.
• Automotive Designers: Facilitates the integration of DME-compatible components into next-generation road vehicles, where fuel system integrity and clear identification are critical.

With these guidelines, the amendment strengthens the safety, reliability, and traceability of DME fuel system components, supporting the broader adoption of low-emission fuels in road transportation.

Related Standards

• ISO 22760 Series: The entire ISO 22760 series addresses Dimethyl Ether (DME) fuel system components for road vehicles, covering a variety of parts and technical requirements for safe and reliable DME fuel use.
• ISO/TC 22/SC 41: This subcommittee focuses on specific aspects of gaseous fuels within road vehicle applications and is responsible for the ongoing development and maintenance of DME fuel system standards.
• Other Fuel System Standards: Organizations may also refer to related standards for fuel system safety, marking, and traceability, such as those covering compressed natural gas (CNG), liquefied petroleum gas (LPG), and hydrogen fuel systems.

For a comprehensive understanding and up-to-date list of related standards, visit the official ISO website and refer to the ISO 22760 series page.

By adhering to ISO 22760-4:2024/Amd 1:2026, stakeholders can ensure compliance, safety, and efficient management of DME fuel system components, paving the way for a more sustainable and standardized automotive future.