GB21377-2015

Tri-wheel vehicles—Limits and measurement methods for fuel consumption

三轮汽车燃料消耗量限值及测量方法

GB 21377-2015 は現行の中国強制国家規格です：Tri-wheel vehicles—Limits and measurement methods for fuel consumption。業界：電子。テーマ：試験方法。施行日：2015年10月1日。

適用可否は製品範囲、認証ルート、所管当局の通知、移行規定によって異なります。コンプライアンス判断に使う前に、翻訳をご依頼いただくか公式情報源をご確認ください。

コンプライアンス概要

この概要は現在英語のみで提供しています。

適用範囲

This standard applies specifically to tri-wheel vehicles (also known as three-wheeled agricultural vehicles) manufactured or sold in China. It establishes the mandatory fuel consumption limits and measurement methods for these vehicles. Compliance with this standard is required for both type approval and production conformity of all tri-wheel vehicles equipped with single-cylinder or multi-cylinder diesel engines. It replaces the previous version, GB 21377-2008.

技術要求

The standard specifies the maximum allowable fuel consumption for tri-wheel vehicles, categorized by their maximum design total mass and engine type (single-cylinder vs. multi-cylinder diesel engines). It establishes distinct limit values for type approval and production conformity checks, ensuring that both new models and mass-produced units meet energy efficiency requirements. Manufacturers must ensure their vehicles do not exceed the specified fuel consumption thresholds under defined testing conditions. In addition to the limit values, the standard outlines specific requirements for measurement conditions, including vehicle preparation, ambient temperature, and the precision of testing instruments. It also mandates the use of specific coolants, lubricants, and reference fuels as specified in related standards like GB 21378-2015. Furthermore, the standard introduces detailed production consistency requirements. Manufacturers must implement assurance measures based on type approval values to ensure that mass-produced vehicles continuously comply with the standard. Statistical sampling methods are defined to verify conformity during production. The implementation timeline dictates that type approval must comply immediately upon the standard's effective date, while all manufactured and sold vehicles must meet production conformity limits within one year of implementation.

試験方法

Fuel consumption is measured using a chassis dynamometer following specific low-speed and high-speed driving cycles. The standard permits two primary measurement methods: the flow measurement method (using a flow meter) and the carbon balance method (calculating consumption based on exhaust emissions like CO, HC, and CO2). The testing procedure involves multiple consecutive driving cycles, and the final result is determined by the arithmetic mean of valid measurements, ensuring high accuracy and repeatability.

よくある質問

What products are regulated under GB 21377-2015?

GB 21377-2015 regulates tri-wheel vehicles (three-wheeled agricultural vehicles), specifically setting mandatory fuel consumption limits for models equipped with single-cylinder or multi-cylinder diesel engines.

Are there any updates from the previous version of GB 21377?

Yes, compared to GB 21377-2008, the 2015 version adjusts the measurement method to use a chassis dynamometer, updates the corresponding fuel consumption limits, and adds requirements for fuel consumption calculation, production consistency, and standard implementation.

What are the testing methods specified in GB 21377-2015?

The standard specifies the use of a chassis dynamometer with defined driving cycles. Fuel consumption can be measured using either the flow measurement method or the carbon balance method.

The summary above provides a high-level overview of GB 21377-2015. To ensure complete compliance for your tri-wheel vehicles entering the Chinese market, a precise and professional translation of the full technical specifications is essential. Purchase our high-quality English translation of GB 21377-2015 today to access all detailed parameters, limit value tables, and testing procedures.

適用のヒント

種別: 製品
CCS: T54
ICS: 65.060
所管部門: Ministry of Industry and Information Technology
技術委員会: Ministry of Industry and Information Technology