T/CSTE 0122-2021 Abolished Group standards

T/CSTE 0122-2021 "Leader standard evaluation requirements for natural gas engines for automobiles"

Publish Date: 2021-09-27 Implement Date: 2021-09-28 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/CSTE 0122-2021

Standard Type: Group standards

Standard Status: Abolished

is_force_gb: no

CCS Name: A car

ICS Name: Comprehensive study of internal combustion engines in road vehicles

Publish Date: 2021-09-27

Implement Date: 2021-09-28

Scope

Scope: This document specifies the terms and definitions, evaluation index system, evaluation methods, and grade classification for the "Leader" standard evaluation of natural gas engines for automobiles. This document is applicable to the enterprise standard level evaluation of natural gas single-fuel engines for M2, M3, N2, N3, and M1 class automobiles with a total mass exceeding 3,500 kg. Relevant institutions can refer to it when formulating "Leader" evaluation schemes for enterprise standards, and enterprises can also use it as a reference when developing their own enterprise standards. Main technical content: 4.2 Classification of evaluation indexes 4.2.1 The indicators included in the "Leader" standard for natural gas engines for automobiles are divided into basic indicators, core indicators, and innovative indicators. 4.2.2 Basic indicators include: OBD, crankcase pressure, and exhaust emissions. 4.2.3 Core indicators include: percentage of rated speed full-load oil and fuel consumption, rated working condition thermal efficiency, maximum torque working condition thermal efficiency, low-temperature starting quality, rated speed mechanical efficiency, and noise sound power level; the core indicators are divided into three grades, including advanced level, equivalent to the 5-star level in the enterprise standard ranking list; average level, equivalent to the 4-star level in the enterprise standard ranking list; and benchmark level, equivalent to the 3-star level in the enterprise standard ranking list. 4.2.4 Innovative indicators include: specific power, specific torque, power/net mass ratio, WHTC cycle carbon emissions, and maximum thermal efficiency. They are divided into advanced level, average level, and advanced level, where the advanced level is equivalent to the 5-star level in the enterprise standard ranking list, and the average level is equivalent to the 4-star level in the enterprise standard ranking list. It is encouraged to add relevant innovativ