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GB/T 35349-2017   Parking brake performance test methods for vehicles (English Version)
Standard No.: GB/T 35349-2017 Status:valid remind me the status change

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Word Count: 5500 words Price(USD):140.0 remind me the price change

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Implemented on:2018-7-1 Delivery: via email in 1 business day
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Standard No.: GB/T 35349-2017
English Name: Parking brake performance test methods for vehicles
Chinese Name: 汽车驻车制动性能检验方法
Chinese Classification: T40    Automobiles in general
Professional Classification: GB    National Standard
Issued by: AQSIQ; SAC
Issued on: 2017-12-29
Implemented on: 2018-7-1
Status: valid
Language: English
File Format: PDF
Word Count: 5500 words
Price(USD): 140.0
Delivery: via email in 1 business day
Codeofchina.com is in charge of this English translation. In case of any doubt about the English translation, the Chinese original shall be considered authoritative. This standard is developed in accordance with the rules given in GB/T 1.1-2009. This standard was proposed by and is under the jurisdiction of SAC/TC 364 National Technical Committee on Operating Safe Technology and Testing Equipment for Motor Vehicles of Standardization Administration of China. Parking brake performance test methods for vehicles 1 Scope This standard specifies the parking brake performance test methods for vehicles. This standard is applicable to all kinds of vehicles and combination vehicles travelling on the roads in China. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. GB 7258 Technical specifications for safety of power-driven vehicles operating on roads GB/T 13564 Roller opposite forces type automobile brake tester GB 21861 Items and methods of motor vehicles safety technology inspection GB/T 28529 Platform brake tester GB/T 28948 Commercial vehicle - Front towing attachments GB 32087 Towing devices for light-duty vehicle 3 Terms and definitions For the purposes of this document, the terms and definitions given in GB 7258 and GB 21861 as well as the following apply. 3.1 parking brake performance capability of vehicles parking on ramps 3.2 parking ramp ramp used to test the parking brake performance of vehicles 3.3 the slope of parking ramp ratio of the vertical height to the horizontal length of the parking ramp, in %   3.4 parking brake performance tester instrument or measuring device that measures the braking force of vehicles in the parking brake state and evaluates the parking brake performance in combination with the complete vehicle mass, and measures the braking force of vehicles in the parking brake by force sensor 4 Inspection conditions 4.1 The kerb mass of the vehicle under test shall meet the requirements of GB 7258 and GB 21861. 4.2 The operation state of the vehicle under test shall meet the requirements of GB 7258 and GB 21861. 4.3 The tires of the vehicle under test shall be dry and clean, free from mud, water and oil stain. 4.4 The traction device of the vehicle under test shall meet the requirements of GB/T 28948 and GB 32087 in the application of traction method. 5 Test methods 5.1 Ramp test method 5.1.1 Facilities requirements 5.1.1.1 There shall be one parking ramp with gradient of 15% and 20% respectively. The length of the ramp shall be 1m longer than the maximum wheelbase of vehicle under test, and shall be 1m wider than the maximum width of vehicle under test. The ramp adhesion coefficient shall not be less than 0.7. 5.1.1.2 The electronic stopwatch or mechanical stopwatch with resolution of 0.01s. 5.1.2 Test method 5.1.2.1 Drive the vehicle under test straightly and smoothly into the parking ramp with a gradient of 20% (15% for vehicles whose total mass is less than 1.2 times of the kerb mass), stop the vehicle with the service brake and put the transmission in neutral state. 5.1.2.2 Operate the parking brake control device according to the following requirements: a) applied force: when operating by hand, the force applied to the passenger car shall be less than or equal to 400N, and that to other motor vehicle shall be less than or equal to 600N; when operating by feet, the force applied to passenger cars shall be less than or equal to 500N, and that to other motor vehicles shall be less than or equal to 700N; b) operating stroke: more than two-thirds of the total stroke, and more than three-quarters of the total stroke for the parking brake mechanism equipped with automatic adjustment device. 5.1.2.3 Release the service brake control, and after confirming that the vehicle under test has completely stopped, observe continuously for 5min, and the vehicle shall remain still. 5.2 Roller opposite forces type brake tester method 5.2.1 Facilities requirements The roller opposite forces type brake tester shall meet the requirements of GB/T 13564. 5.2.2 Test method 5.2.2.1 The vehicle under test travels in an upright and centered manner, park each axle on the axle (wheel) load meter in turn for the specified time (not less than 3s), and measure the static wheel loads respectively. 5.2.2.2 The vehicle under test travels in an upright and centered manner, park the wheels under test on the drum, the transmission is in neutral state, release the brake pedal; for full-time four-wheel drive vehicles, put the wheels not under test on the auxiliary free roller set with adhesion coefficient meeting the requirements, and the transmission is in neutral state. 5.2.2.3 Start the drum motor and stabilizes it for 3s, operate the parking brake control device for the parking brake axle in accordance with 5.1.2.2, and measure the parking brake force value. 5.2.2.4 The parking brake ratio is the percentage of the sum of the measured braking forces of each parking brake forces and the sum of the (static) axle loads of all axles of the vehicle. 5.3 Platform brake tester method 5.3.1 Facilities requirements The platform brake tester shall meet the requirements of GB/T 28529. 5.3.2 Test method 5.3.2.1 The vehicle under test slides at the speed of 5km/h~10km/h, and after the transmission is in neutral state (for automatic transmission vehicles, the transmission may be in "D" gear), it drives on the platform in a straight and smooth manner. 5.3.2.2 When the parking brake axles of the vehicle are all drive onto the platform, operate the parking brake control device for the parking brake axle in accordance with 5.1.2.2, and measure the parking brake force value. 5.3.2.3 When all wheels under test drive on the platform, keep the vehicle still and measure the static wheel load of each wheel. 5.3.2.4 The parking brake ratio is the percentage of the sum of the measured braking forces of each parking brake forces and the sum of the (static) axle loads of all axles of the vehicle. 5.4 Traction test method 5.4.1 Facilities requirements 5.4.1.1 The measuring range of traction parking brake performance tester is generally not less than 7,000daN (or meet the requirements of the instruction). 5.4.1.2 The inspection area shall be a flat, hard and clean cement or asphalt pavement, and the road adhesion coefficient shall not be less than 0.7. 5.4.1.3 Traction devices at the front and rear of vehicles and their fasteners shall not be damaged, invalid, broken or deformed to affect normal use.
Foreword II 1 Scope 2 Normative references 3 Terms and definitions 4 Inspection conditions 5 Test methods Bibliography
Referred in GB/T 35349-2017:
*GB 7258-2017/XG2-2021 Technical specifications for safety of power-driven vehicles operating on roads,includes Amendment 1 and Amendment 2
*GB/T 13564-2022 Roller opposite forces type automobile brake tester
*GB 21861-2014 Items and methods of motor vehicles safety technology inspection
*GB/T 28529-2012 Platform brake tester
*GB/T 28948-2012 Commercial vehicle—Front towing attachments
*GB 32087-2015 Towing devices for light-duty vehicle
*GB/T 35163-2017 Method for measuring relative wet grip performance of truck and bus tyres
*JB/T 13348-2017 Rolling bearings-Bearings for traction machine of electric lift
*GB/T 24157-2017 Test methods of range and indication for the state of charge for electric motorcycles and electric mopeds
*GB/T 13955-2017 Installation and operation of residual current operated protective devices
*GB/T 12668.8-2017 Adjustable speed electrical power drive systems—Part 8:Specification of voltage on the power interface
*GB/T 12476.3-2017 Electrical apparatus for use in the presence of combustible dust—Part 3: Classification of areas where combustible dusts are or may be present
*GB/T 10464-2017/XG1-2019 Sunflowerseed oil, inckudes Amendment 1
*GB/T 35207-2017 Baby Carriers
GB/T 35349-2017 is referred in:
*GB/T 2910.25-2017 Textiles―Quantitative chemical analysis―Part 25:Mixtures of polyester and certain other fibres(method using trichloroacetic acid and chloroform)
*GB/T 17743-2017 Limits and methods of measurement of radio disturbance characteristics of electrical lighting and similar equipment
*GB/T 17626.6-2017 Electromagnetic compatibility—Testing and measurement techniques—Immunity to conducted disturbances,induced by radio-frequency fields
*GB/T 16886.10-2017 Biological evaluation of medical devices―Part 10:Tests for irritation and skin sensitization
*GB/T 16886.12-2017 Biological evaluation of medical devices—Part 12:Sample preparation and reference materials
*GB/T 16886.5-2017 Biological evaluation of medical devices―Part 5:Tests for in vitro cytotoxicity
*JTG/T D81-2017 Design Guidelines for Highway Safety Facilities (excluding the Explanation of Provisions )
Code of China
Standard
GB/T 35349-2017  Parking brake performance test methods for vehicles (English Version)
Standard No.GB/T 35349-2017
Statusvalid
LanguageEnglish
File FormatPDF
Word Count5500 words
Price(USD)140.0
Implemented on2018-7-1
Deliveryvia email in 1 business day
Detail of GB/T 35349-2017
Standard No.
GB/T 35349-2017
English Name
Parking brake performance test methods for vehicles
Chinese Name
汽车驻车制动性能检验方法
Chinese Classification
T40
Professional Classification
GB
ICS Classification
Issued by
AQSIQ; SAC
Issued on
2017-12-29
Implemented on
2018-7-1
Status
valid
Superseded by
Superseded on
Abolished on
Superseding
Language
English
File Format
PDF
Word Count
5500 words
Price(USD)
140.0
Keywords
GB/T 35349-2017, GB 35349-2017, GBT 35349-2017, GB/T35349-2017, GB/T 35349, GB/T35349, GB35349-2017, GB 35349, GB35349, GBT35349-2017, GBT 35349, GBT35349
Introduction of GB/T 35349-2017
Codeofchina.com is in charge of this English translation. In case of any doubt about the English translation, the Chinese original shall be considered authoritative. This standard is developed in accordance with the rules given in GB/T 1.1-2009. This standard was proposed by and is under the jurisdiction of SAC/TC 364 National Technical Committee on Operating Safe Technology and Testing Equipment for Motor Vehicles of Standardization Administration of China. Parking brake performance test methods for vehicles 1 Scope This standard specifies the parking brake performance test methods for vehicles. This standard is applicable to all kinds of vehicles and combination vehicles travelling on the roads in China. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. GB 7258 Technical specifications for safety of power-driven vehicles operating on roads GB/T 13564 Roller opposite forces type automobile brake tester GB 21861 Items and methods of motor vehicles safety technology inspection GB/T 28529 Platform brake tester GB/T 28948 Commercial vehicle - Front towing attachments GB 32087 Towing devices for light-duty vehicle 3 Terms and definitions For the purposes of this document, the terms and definitions given in GB 7258 and GB 21861 as well as the following apply. 3.1 parking brake performance capability of vehicles parking on ramps 3.2 parking ramp ramp used to test the parking brake performance of vehicles 3.3 the slope of parking ramp ratio of the vertical height to the horizontal length of the parking ramp, in %   3.4 parking brake performance tester instrument or measuring device that measures the braking force of vehicles in the parking brake state and evaluates the parking brake performance in combination with the complete vehicle mass, and measures the braking force of vehicles in the parking brake by force sensor 4 Inspection conditions 4.1 The kerb mass of the vehicle under test shall meet the requirements of GB 7258 and GB 21861. 4.2 The operation state of the vehicle under test shall meet the requirements of GB 7258 and GB 21861. 4.3 The tires of the vehicle under test shall be dry and clean, free from mud, water and oil stain. 4.4 The traction device of the vehicle under test shall meet the requirements of GB/T 28948 and GB 32087 in the application of traction method. 5 Test methods 5.1 Ramp test method 5.1.1 Facilities requirements 5.1.1.1 There shall be one parking ramp with gradient of 15% and 20% respectively. The length of the ramp shall be 1m longer than the maximum wheelbase of vehicle under test, and shall be 1m wider than the maximum width of vehicle under test. The ramp adhesion coefficient shall not be less than 0.7. 5.1.1.2 The electronic stopwatch or mechanical stopwatch with resolution of 0.01s. 5.1.2 Test method 5.1.2.1 Drive the vehicle under test straightly and smoothly into the parking ramp with a gradient of 20% (15% for vehicles whose total mass is less than 1.2 times of the kerb mass), stop the vehicle with the service brake and put the transmission in neutral state. 5.1.2.2 Operate the parking brake control device according to the following requirements: a) applied force: when operating by hand, the force applied to the passenger car shall be less than or equal to 400N, and that to other motor vehicle shall be less than or equal to 600N; when operating by feet, the force applied to passenger cars shall be less than or equal to 500N, and that to other motor vehicles shall be less than or equal to 700N; b) operating stroke: more than two-thirds of the total stroke, and more than three-quarters of the total stroke for the parking brake mechanism equipped with automatic adjustment device. 5.1.2.3 Release the service brake control, and after confirming that the vehicle under test has completely stopped, observe continuously for 5min, and the vehicle shall remain still. 5.2 Roller opposite forces type brake tester method 5.2.1 Facilities requirements The roller opposite forces type brake tester shall meet the requirements of GB/T 13564. 5.2.2 Test method 5.2.2.1 The vehicle under test travels in an upright and centered manner, park each axle on the axle (wheel) load meter in turn for the specified time (not less than 3s), and measure the static wheel loads respectively. 5.2.2.2 The vehicle under test travels in an upright and centered manner, park the wheels under test on the drum, the transmission is in neutral state, release the brake pedal; for full-time four-wheel drive vehicles, put the wheels not under test on the auxiliary free roller set with adhesion coefficient meeting the requirements, and the transmission is in neutral state. 5.2.2.3 Start the drum motor and stabilizes it for 3s, operate the parking brake control device for the parking brake axle in accordance with 5.1.2.2, and measure the parking brake force value. 5.2.2.4 The parking brake ratio is the percentage of the sum of the measured braking forces of each parking brake forces and the sum of the (static) axle loads of all axles of the vehicle. 5.3 Platform brake tester method 5.3.1 Facilities requirements The platform brake tester shall meet the requirements of GB/T 28529. 5.3.2 Test method 5.3.2.1 The vehicle under test slides at the speed of 5km/h~10km/h, and after the transmission is in neutral state (for automatic transmission vehicles, the transmission may be in "D" gear), it drives on the platform in a straight and smooth manner. 5.3.2.2 When the parking brake axles of the vehicle are all drive onto the platform, operate the parking brake control device for the parking brake axle in accordance with 5.1.2.2, and measure the parking brake force value. 5.3.2.3 When all wheels under test drive on the platform, keep the vehicle still and measure the static wheel load of each wheel. 5.3.2.4 The parking brake ratio is the percentage of the sum of the measured braking forces of each parking brake forces and the sum of the (static) axle loads of all axles of the vehicle. 5.4 Traction test method 5.4.1 Facilities requirements 5.4.1.1 The measuring range of traction parking brake performance tester is generally not less than 7,000daN (or meet the requirements of the instruction). 5.4.1.2 The inspection area shall be a flat, hard and clean cement or asphalt pavement, and the road adhesion coefficient shall not be less than 0.7. 5.4.1.3 Traction devices at the front and rear of vehicles and their fasteners shall not be damaged, invalid, broken or deformed to affect normal use.
Contents of GB/T 35349-2017
Foreword II 1 Scope 2 Normative references 3 Terms and definitions 4 Inspection conditions 5 Test methods Bibliography
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Keywords:
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