T/TJCA 0017-2026 Active Group standards

T/TJCA 0017-2026 The method for determining the fuel economy of gasoline

Publish Date: 2026-01-09 Implement Date: 2026-01-09 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: T/TJCA 0017-2026

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: Video, pulse system equipment

ICS Name: \nLiquid fuel

Publish Date: 2026-01-09

Implement Date: 2026-01-09

Scope

This standard specifies the test method for determining the combustion work capacity (resistance to combustion) of gasoline using a standard ignition engine test bench. Reason for selecting standard substances: "n-heptane" and "iso-octane" are referenced, which have high purity (analytical grade) and stable properties. They have been used as standard substances in the evaluation of automotive gasoline grades and are fully recognized by domestic and international standards. According to the standard, the octane number of n-heptane is 0, and that of iso-octane is 100. Their mixture is the standard reference fuel, with a proportion of 8% n-heptane and 92% iso-octane. This mixture is regarded as the standard fuel No. 92, corresponding to No. 92 gasoline, which is consistent with the actual market gasoline grades. Reason for selecting test equipment: Since we are testing automotive gasoline grades, the instrument used for measuring gasoline grades is a dedicated device - the "gasoline octane number measuring machine". Therefore, only by introducing the core key components of this instrument, such as "vertical, single-cylinder, four-stroke, ignition, variable compression ratio, fixed cylinder diameter and displacement", can we preserve the original characteristics of the tested fuel, ensuring that No. 92 gasoline remains No. 92. If other engines are selected, not only will the models be complex and varied (including "multi-cylinder", "high-speed", and "fixed compression ratio" engines), but these engines are not specified as the standard models for measuring gasoline grades, making them unsuitable. Reason for selecting test conditions: Our testing is based on gasoline grades. Throughout the test process, the test conditions should be as consistent as possible, that is, to maintain the test conditions consistent with those used for measuring gasoline grades. These test condition parameters have also been validated through long-term testing and will not cause variation