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TCSAE126-2020 English PDF

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TCSAE126-2020: Engine test cycle for heavy-duty commercial vehicles
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T/CSAE 126-2020English619 Add to Cart 5 days [Need to translate] Engine test cycle for heavy-duty commercial vehicles T/CSAE 126-2020

PDF similar to TCSAE126-2020


Standard similar to TCSAE126-2020

T/CSAE 159   QC/T 1029   QC/T 797   T/CSAE 127   T/CSAE 125   T/CEC 126   

Basic data

Standard ID T/CSAE 126-2020 (T/CSAE126-2020)
Description (Translated English) Engine test cycle for heavy-duty commercial vehicles
Sector / Industry Chinese Industry Standard
Classification of Chinese Standard T40
Word Count Estimation 24,263
Date of Issue 23/4/2020
Date of Implementation 23/4/2020
Issuing agency(ies) China Society of Automotive Engineers

TCSAE126-2020: Engine test cycle for heavy-duty commercial vehicles

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
T/CSAE 126-2020 Engine test cycle for heavy-duty commercial vehicles ICS 43.080.01 T 40 Group standard Heavy-duty commercial vehicle engine test conditions 2020-04-23 release 2020-04-23 Implementation Issued by Chinese Society of Automotive Engineering

Table of contents

Foreword...II 1 Scope...1 2 Normative references...1 3 Terms and definitions...1 4 Composition of working conditions...2 Appendix A (Normative Appendix) Engine transient test conditions data...4

Foreword

This standard is compiled in accordance with the rules given in GB/T 1.1-2009 "Guidelines for Standardization Part 1.Standard Structure and Compilation". Some content of this standard may involve patents, and the issuing organization of this standard does not bear the responsibility for identifying these patents. This standard is proposed by the Automotive Environmental Protection Technology Branch of China Automotive Engineering Society. Drafting organizations of this standard. China Automotive Technology and Research Center Co., Ltd., China FAW Group Co., Ltd., Guangxi Yuchai Machinery Co., Ltd. Co., Ltd., Beiqi Foton Motor Co., Ltd. The main drafters of this standard. Hu Xi, Liu Yu, Lu He, Yu Han Zhengnan, Wang Zhiguang, Tian Chong, Li Xingrong, Zhang Xian, Wang Shuqing, Li Jing Yuan, Fu Tieqiang, Li Mengliang, An Xiaopan. This standard is formulated for the first time. Heavy-duty commercial vehicle engine test conditions

1 Scope

This standard specifies the test conditions used for emission and fuel consumption tests of commercial vehicle engines. This standard applies to commercial vehicle engines with a maximum designed total mass greater than 3500 kg.

2 Normative references

The following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this document. For undated references, the latest version (including all amendments) applies to this document. GB/T 3730.1 Terms and definitions for types of cars and trailers GB/T 3730.2 Road Vehicle Quality Vocabulary and Code GB/T 15089 Classification of motor vehicles and trailers GB/T 17692 Test Method for Net Power of Automobile Engine GB/T 27840-2011 Test method for fuel consumption of heavy commercial vehicles

3 Terms and definitions

3.1 Idle speed (Neidle) Refers to the engine's no-load operating state, that is, the speed when the clutch is in the engaged position and the transmission is in the neutral position. 3.2 Normalized speed coefficient (Nenorm) Refers to the percentage formed by normalizing the actual engine speed. The calculation formula is as follows. Nenorm = (Ne – Neidle)/(Nerated – Neidle) In the formula. Ne is the actual engine speed in rpm; Neidle is the engine idling speed in rpm; Nerated is the engine rated speed Constant speed, the unit is rpm. 3.3 Percent load The percentage of the maximum torque that the engine can reach at a certain speed. 3.4 Maximum net power The net engine power value measured at full engine load. 3.5 Net power Under reference air conditions, in accordance with GB/T 17692 appendix requirements on the test bench, the power measured at the end of the engine crankshaft or equivalent rate. 3.6 Test cycle A test cycle composed of engine steady-state test conditions and transient test conditions. 3.7 Engine steady state test cycle A test cycle consisting of 13 steady-state conditions. 3.8 Engine transient test cycle A transient test cycle consisting of 1800 changing working conditions every second.

4 Composition of working conditions

4.1 Steady state test conditions The steady-state test conditions include 13 normalized speed coefficients and load percentage conditions. During the test, according to the transient of each engine The performance curve converts the percentage value into actual value. The engine runs for the time specified in each working condition, and completes the engine at a linear speed within 20±1 seconds. Motor speed and load conversion. 4.2 Transient test conditions The transient test conditions are described by the continuous test points of the normalized speed coefficient and load percentage that change rapidly with time, and the duration is 1800 seconds. During the test, the percentage value is converted into actual value according to the transient performance curve of each engine. The test conditions are shown in Figure 1.See Appendix A for the second-by-second data of working conditions.

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