ISO 28981:2009/Amd 1:2015

Overview

ISO 28981:2009/Amd 1:2015 is an amendment to the international standard that defines methods for setting the running resistance of mopeds on a chassis dynamometer. Issued by the International Organization for Standardization (ISO), this amendment provides updated specifications specifically regarding the ambient conditions required during road testing. The standard is crucial for manufacturers, testing laboratories, and regulatory bodies involved in performance evaluation and compliance testing of mopeds.

Key Topics

• Running Resistance Measurement: This standard amendment ensures precise calibration methods for running resistance on chassis dynamometers used for mopeds, enhancing testing accuracy.
• Ambient Conditions for Road Tests: The amendment updates standard ambient conditions necessary to conduct reliable road tests, including:
  • Pressure: 100 kPa
  • Temperature: 293 K (20°C)
  • Relative air density: 0.9197
  • Air volumetric mass: 1.189 kg/m³
• Technical Committee Involvement: Prepared by ISO Technical Committee 22 (Road vehicles), Subcommittee SC 38 (Motorcycles and mopeds), ensuring alignment with industry needs and technological advances.
• Standardization Process: Complies with ISO/IEC Directives, illustrating transparent and structured development procedures, including consideration of patent rights and global trade principles.

Applications

• Moped Manufacturers: Utilize this standard to calibrate chassis dynamometers accurately, ensuring mopeds meet performance and emission regulations.
• Testing Laboratories: Apply the specified ambient conditions to validate dynamometer results, improving test reproducibility and reliability across different laboratories.
• Regulatory Bodies: Adopt the standard to enforce uniform measurement methods, facilitating fair compliance assessments on running resistance-a critical factor influencing fuel efficiency.
• Research and Development: Employ the standard’s methods during vehicle development phases to evaluate drivetrain performance and rolling resistance under controlled conditions.

Related Standards

• ISO 28981:2009: The base standard describing initial methods for setting running resistance on mopeds’ chassis dynamometers.
• ISO 8712 Series: Standards concerning dynamometer testing procedures for motorcycles and mopeds.
• ISO/IEC Directives, Part 1 and Part 2: Provide editorial and procedural rules governing the preparation and maintenance of ISO standards.
• ISO 39001: Road traffic safety management systems, often intersecting with vehicle performance testing standards for regulatory compliance.

By adhering to ISO 28981:2009/Amd 1:2015, stakeholders benefit from standardized testing methods that improve consistency and reliability in the measurement of running resistance, supporting enhanced vehicle performance evaluations, regulatory compliance, and industry innovation.