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Position: Chinese Standard in English/GB/T 40711.4-2021
GB/T 40711.4-2021   Off-cycle technology/device energy saving effects evaluation methods for passenger cars—Part 4:Regenerative braking system (English Version)
Standard No.: GB/T 40711.4-2021 Status:valid remind me the status change

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Language:English File Format:PDF
Word Count: 8500 words Price(USD):255.0 remind me the price change

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Implemented on:2022-5-1 Delivery: via email in 1~3 business day
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Standard No.: GB/T 40711.4-2021
English Name: Off-cycle technology/device energy saving effects evaluation methods for passenger cars—Part 4:Regenerative braking system
Chinese Name: 乘用车循环外技术/装置节能效果评价方法 第4部分:制动能量回收系统
Chinese Classification: T40    Automobiles in general
Professional Classification: GB    National Standard
Issued by: AQSIQ and SAMR
Issued on: 2021-10-11
Implemented on: 2022-5-1
Status: valid
Language: English
File Format: PDF
Word Count: 8500 words
Price(USD): 255.0
Delivery: via email in 1~3 business day
1 Scope This document specifies a method for evaluating the energy efficiency of braking energy recovery systems for passenger cars. This document applies to M1 vehicles with brake energy recovery systems with a maximum design gross mass of up to 3500 kg. This document applies to vehicles capable of running on petrol or diesel, and does not apply to hybrid electric vehicles that can be charged externally. 2 Normative references The contents of the following documents constitute essential provisions of this document by means of normative references in the text. Where a reference is dated, only the version corresponding to that date is applicable to this document; where a reference is not dated, the latest version (including all amendment sheets) is applicable to this document. GB 18352.6-2016 Emission limits and measurement methods for light duty vehicles (China Stage 6) GB/T 19233-2020 Test method for fuel consumption of light duty vehicles GB 19578 Fuel Consumption Limits for Passenger Cars GB/T 19596 Terminology for electric vehicles GB/T 19753-2021 Test method for energy consumption of light-duty hybrid electric vehicles GB 27999 Evaluation methods and indicators for fuel consumption of passenger cars 3 Terminology and definitions The terms defined by GB/T 19596 and GB 27999 and the following terms and definitions apply to this document. 3.1 Rechargeable energy storage system An energy storage system that is rechargeable and can provide electrical energy. 3.2 Braking energy recovery system A system that converts or partially converts the kinetic and potential energy of a vehicle into energy stored in an on-board rechargeable energy storage system when the vehicle is coasting, decelerating or descending a slope. 3.3 Regenerative energy The electrical energy recovered by regenerative braking of a moving vehicle. Note: The unit is Watt-hour (W-h). 4 General requirements 4.1 The safe operation of the vehicle shall not be affected during the operation of the brake energy recovery system. 4.2 The vehicle under test shall comply with the requirements of the fuel consumption limit value specified in GB 19578 and the requirements of GB 18352.6-2016 (or other applicable versions) regarding pollutant emissions. 4.3 The setting of the brake energy recovery system of the vehicle under test shall be consistent with that of the certified test vehicle. 4.4 The test conditions shall meet the requirements of Chapter 5 of GB/T 19233-2020; for the non-externally rechargeable hybrid electric vehicle (NOVC-HEV), the test conditions shall meet the requirements of Chapter 4 of GB/T 19753-2021. 4.5 The brake energy recovery system shall be tested in accordance with the requirements of Chapter 5, and the vehicle parameters and test data for the test shall be recorded in accordance with the provisions of Appendix A. The energy saving effect shall be calculated in accordance with the requirements of Chapter 6 and the results shall be expressed in litres per 100 km (L/100km), rounded off (rounded off) to two decimal places. 5 Test procedure 5.1 Test requirements 5.1.1 If the vehicle is equipped with other energy saving devices that can be switched on and off manually, the switch shall be switched off during the test. 5.1.2 For NOVC-HEVs, the vehicle shall be pre-treated in accordance with C.3.2 of GB/T 19753-2021. For other vehicles, the state of charge (SOC) of REESS shall be set according to the recommended value of the vehicle manufacturer and recorded in the test report, and the state of charge shall be adjusted to the recommended value of the vehicle manufacturer before the start of each test. 5.1.3 The sampling frequency of the measured current shall not be less than 20 Hz. 5.1.4 For the purpose of using external equipment to measure the current and voltage at the motor terminals of all motors involved in brake energy recovery, suitable, safe and accessible connection points shall be provided on the vehicle. 5.2 Test method 5.2.1 The operating principle of the brake energy recovery system shall be provided by the vehicle manufacturer to the testing body and the regenerative energy shall be measured in accordance with the method specified in Appendix B. 5.2.2 Calculate the theoretical cycle recovery energy of the vehicle under the global harmonised light vehicle test cycle (WLTC) and Chinese passenger car driving conditions (CLTC-P) as specified in 4.3 of GB/T 19233-2020 in accordance with Appendix C. 6 Test results 6.1 Test results of the energy saving effect of the brake energy recovery system The results of the braking energy recovery test were calculated according to equation (1). 6.2 Value of energy saving effect of brake energy recovery system The energy saving effect value of the brake energy recovery system is calculated according to equation (6). Appendix A (Normative) Brake Energy Recovery System Test Report
foreword 1 Scope 2 Normative references 3 Terminology and definitions 4 General requirements 5 Test procedure 6 Test results Appendix A (Normative) Brake Energy Recovery System Test Report
Referred in GB/T 40711.4-2021:
*GB 18352.6-2016 Limits and measurement methods for emissions from light-duty vehicles(CHINA 6)
*GB/T 19233-2020 Measurement methods of fuel consumption for light-duty vehicles
*GB 19578-2021 Fuel consumption limits for passenger cars
*GB/T 19596-2017 Terminology of electric vehicles
*GB/T 19753-2021 Test methods for energy consumption of light-duty hybrid electric vehicles
*GB 27999-2019 Fuel consumption evaluation methods and targets for passenger cars
Code of China
Standard
GB/T 40711.4-2021  Off-cycle technology/device energy saving effects evaluation methods for passenger cars—Part 4:Regenerative braking system (English Version)
Standard No.GB/T 40711.4-2021
Statusvalid
LanguageEnglish
File FormatPDF
Word Count8500 words
Price(USD)255.0
Implemented on2022-5-1
Deliveryvia email in 1~3 business day
Detail of GB/T 40711.4-2021
Standard No.
GB/T 40711.4-2021
English Name
Off-cycle technology/device energy saving effects evaluation methods for passenger cars—Part 4:Regenerative braking system
Chinese Name
乘用车循环外技术/装置节能效果评价方法 第4部分:制动能量回收系统
Chinese Classification
T40
Professional Classification
GB
ICS Classification
Issued by
AQSIQ and SAMR
Issued on
2021-10-11
Implemented on
2022-5-1
Status
valid
Superseded by
Superseded on
Abolished on
Superseding
Language
English
File Format
PDF
Word Count
8500 words
Price(USD)
255.0
Keywords
GB/T 40711.4-2021, GB 40711.4-2021, GBT 40711.4-2021, GB/T40711.4-2021, GB/T 40711.4, GB/T40711.4, GB40711.4-2021, GB 40711.4, GB40711.4, GBT40711.4-2021, GBT 40711.4, GBT40711.4
Introduction of GB/T 40711.4-2021
1 Scope This document specifies a method for evaluating the energy efficiency of braking energy recovery systems for passenger cars. This document applies to M1 vehicles with brake energy recovery systems with a maximum design gross mass of up to 3500 kg. This document applies to vehicles capable of running on petrol or diesel, and does not apply to hybrid electric vehicles that can be charged externally. 2 Normative references The contents of the following documents constitute essential provisions of this document by means of normative references in the text. Where a reference is dated, only the version corresponding to that date is applicable to this document; where a reference is not dated, the latest version (including all amendment sheets) is applicable to this document. GB 18352.6-2016 Emission limits and measurement methods for light duty vehicles (China Stage 6) GB/T 19233-2020 Test method for fuel consumption of light duty vehicles GB 19578 Fuel Consumption Limits for Passenger Cars GB/T 19596 Terminology for electric vehicles GB/T 19753-2021 Test method for energy consumption of light-duty hybrid electric vehicles GB 27999 Evaluation methods and indicators for fuel consumption of passenger cars 3 Terminology and definitions The terms defined by GB/T 19596 and GB 27999 and the following terms and definitions apply to this document. 3.1 Rechargeable energy storage system An energy storage system that is rechargeable and can provide electrical energy. 3.2 Braking energy recovery system A system that converts or partially converts the kinetic and potential energy of a vehicle into energy stored in an on-board rechargeable energy storage system when the vehicle is coasting, decelerating or descending a slope. 3.3 Regenerative energy The electrical energy recovered by regenerative braking of a moving vehicle. Note: The unit is Watt-hour (W-h). 4 General requirements 4.1 The safe operation of the vehicle shall not be affected during the operation of the brake energy recovery system. 4.2 The vehicle under test shall comply with the requirements of the fuel consumption limit value specified in GB 19578 and the requirements of GB 18352.6-2016 (or other applicable versions) regarding pollutant emissions. 4.3 The setting of the brake energy recovery system of the vehicle under test shall be consistent with that of the certified test vehicle. 4.4 The test conditions shall meet the requirements of Chapter 5 of GB/T 19233-2020; for the non-externally rechargeable hybrid electric vehicle (NOVC-HEV), the test conditions shall meet the requirements of Chapter 4 of GB/T 19753-2021. 4.5 The brake energy recovery system shall be tested in accordance with the requirements of Chapter 5, and the vehicle parameters and test data for the test shall be recorded in accordance with the provisions of Appendix A. The energy saving effect shall be calculated in accordance with the requirements of Chapter 6 and the results shall be expressed in litres per 100 km (L/100km), rounded off (rounded off) to two decimal places. 5 Test procedure 5.1 Test requirements 5.1.1 If the vehicle is equipped with other energy saving devices that can be switched on and off manually, the switch shall be switched off during the test. 5.1.2 For NOVC-HEVs, the vehicle shall be pre-treated in accordance with C.3.2 of GB/T 19753-2021. For other vehicles, the state of charge (SOC) of REESS shall be set according to the recommended value of the vehicle manufacturer and recorded in the test report, and the state of charge shall be adjusted to the recommended value of the vehicle manufacturer before the start of each test. 5.1.3 The sampling frequency of the measured current shall not be less than 20 Hz. 5.1.4 For the purpose of using external equipment to measure the current and voltage at the motor terminals of all motors involved in brake energy recovery, suitable, safe and accessible connection points shall be provided on the vehicle. 5.2 Test method 5.2.1 The operating principle of the brake energy recovery system shall be provided by the vehicle manufacturer to the testing body and the regenerative energy shall be measured in accordance with the method specified in Appendix B. 5.2.2 Calculate the theoretical cycle recovery energy of the vehicle under the global harmonised light vehicle test cycle (WLTC) and Chinese passenger car driving conditions (CLTC-P) as specified in 4.3 of GB/T 19233-2020 in accordance with Appendix C. 6 Test results 6.1 Test results of the energy saving effect of the brake energy recovery system The results of the braking energy recovery test were calculated according to equation (1). 6.2 Value of energy saving effect of brake energy recovery system The energy saving effect value of the brake energy recovery system is calculated according to equation (6). Appendix A (Normative) Brake Energy Recovery System Test Report
Contents of GB/T 40711.4-2021
foreword 1 Scope 2 Normative references 3 Terminology and definitions 4 General requirements 5 Test procedure 6 Test results Appendix A (Normative) Brake Energy Recovery System Test Report
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