ISO 2710-1:2017

Overview

ISO 2710-1:2017 is an international standard that defines the fundamental vocabulary related to reciprocating internal combustion (RIC) engines, specifically focusing on terms used in engine design and operation. This second edition, published by ISO, provides clear and precise definitions essential for manufacturers, engineers, and researchers working with RIC engines to ensure consistent communication across the industry.

The standard covers a wide range of key terms, including classifications of engines by ignition method, fuel type, and cooling methods, as well as detailed descriptions of working cycles, fuel supply systems, gas exchange processes, and critical engine parameters such as torque and power. It complements other standards like ISO 7967 (component terminology) and ISO 15550, ISO 14396, and ISO 3046 (performance).

Key Topics

• Definitions of Engine Types:

  • Reciprocating internal combustion engines (RIC engines) that convert fuel energy to mechanical work via piston movement.
  • Classification by ignition methods: compression ignition, spark ignition, hot bulb, convertible, and pilot injection engines.
  • Classification by fuel type: liquid fuels (diesel, spark ignition with carburettor or fuel injection, multi-fuel), gaseous fuels (natural gas, bio gas), and specialized types like pilot injection gas engines.
  • Cooling methods: liquid-cooled, air-cooled, and heat insulated engines.

• Fuel Supply Systems:

  • Injection types including mechanical, direct, indirect, accumulator, pilot injection, and air injection.
  • Induction of fuel-air mixtures formed outside the cylinder.

• Working Cycles and Thermodynamics:

  • Detailed terms for four-stroke and two-stroke cycles.
  • Thermodynamic cycles covered include Otto, Diesel, Sabathe, Miller, and Atkinson cycles.
  • Definitions of key operational strokes such as intake, compression, expansion, and exhaust.

• Gas Exchange and Pressure Charging:

  • Natural aspiration versus various pressure-charging methods like turbocharging, mechanical supercharging, pulse charging, and staged charging.
  • Importance of air supply pressure to optimize engine performance.

• Performance and Operational Parameters:

  • Torque and power definitions critical for engine output evaluation.
  • Consumption metrics to assess fuel efficiency.
  • Pressures and temperatures within engine operation.

Applications

ISO 2710-1:2017 is crucial for:

• Engine Manufacturers: To standardize terminology ensuring accurate product specifications and clear communication during design, manufacturing, and testing phases.
• Engine Design Engineers: To understand and apply consistent terms when planning engine configurations or modifications.
• Maintenance and Service Providers: To accurately diagnose, maintain, and repair RIC engines using a universal technical vocabulary.
• Academic and Research Institutions: To maintain clarity in publications, studies, and technical documentation about reciprocating engines.
• Regulatory Bodies and Inspectors: To ensure compliance with safety, performance, and environmental regulations using standardized language.

Related Standards

• ISO 7967 (All Parts): Defines terms related to components and systems of reciprocating internal combustion engines, providing complementary vocabulary to ISO 2710-1.
• ISO 15550, ISO 14396, ISO 3046 (All Parts): Focus on performance metrics and testing procedures of reciprocating internal combustion engines.
• ISO/IEC Directives Parts 1 and 2: Provide guidelines on the preparation and maintenance of ISO standards, ensuring consistent terminology and document structure.

By adopting ISO 2710-1:2017, the global RIC engine community benefits from harmonized, precise vocabulary enhancing understanding, reducing ambiguity, and improving the quality of communication across design, operation, and research activities. This standard serves as a foundational reference for anyone involved in the development and use of reciprocating internal combustion engines.