• BS ISO 7634:2007

    Current The latest, up-to-date edition.

    Road vehicles. Compressed air braking systems for towed vehicles including those with electronic braking control functions .Test procedures

    Available format(s):  Hardcopy, PDF

    Language(s):  English

    Published date:  31-07-2007

    Publisher:  British Standards Institution

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    Table of Contents - (Show below) - (Hide below)

    Foreword
    1 Scope
    2 Normative references
    3 Terms and definitions
    4 Symbols
    5 Test site conditions
        5.1 Test site
        5.2 Road surface condition
        5.3 Ambient conditions
    6 General requirements
    7 Recommended sequence of tests
        7.1 Preparation and static checks and tests
        7.2 Basic performance tests - unladen
        7.3 Antilock braking system/electronically controlled
              braking system (ABS/EBS) tests - unladen
        7.4 Basic performance tests - Laden
    8 Vehicle preparation
        8.1 Documents and basic data
        8.2 Braking system condition and bedding
        8.3 Adjustment of braking equipment
        8.4 Tyre conditions
        8.5 Towing vehicles
        8.6 Instrumentation - General
        8.7 Provision for failure simulation
        8.8 Loading condition
        8.9 Additional vehicle to tow the combination of normal
              towing vehicle and test trailer
        8.10 Additional instrumentation for ABS equipped trailers
        8.11 Additional instrumentation for trailer with an
              electric control line
    9 Energy storage capacity test
        9.1 Test conditions
        9.2 Test procedure
        9.3 Test requirement
        9.4 Presentation of results
    10 Service braking system - Response time measurement
        10.1 General
        10.2 Towing vehicle simulator
        10.3 Test conditions
        10.4 Test procedure
        10.5 Presentation of results
    11 Automatic braking
    12 Brake defect and failure warning signals
        12.1 Antilock braking system warning signal
        12.2 EBS warning signal check
    13 Tests on trailers equipped with spring brake actuators
        13.1 Initial conditions
        13.2 Energy depletion test
        13.3 Spring brake actuation test
        13.4 Auxiliary release system check
    14 Dynamometer tests (alternative to vehicle tests)
        14.1 General
        14.2 Alternative type I tests (fade test for trailers of
              categories O[2] and O[3])
        14.3 Alternative type III tests (fade test for category
              O[4] trailers)
    15 Transfer of results of type I or type III tests to other
        vehicles
        15.1 General
        15.2 Presentation of results
    16 Control failure of load-sensing device/function - Stationary
        test
    17 Auxiliary equipment failure
    18 Basic performance tests - Unladen
        18.1 Type O test (Service braking system cold brake
              effectiveness)
    19 Antilock braking system/electronically controlled braking
        system (ABS/EBS) tests - Unladen
        19.1 Determination of adhesion utilization on high adhesion
              surface
        19.2 Determination of the peak coefficient of adhesion on
              the high adhesion surface
        19.3 Wheel behaviour
        19.4 Split adhesion tests
        19.5 Energy consumption of the antilock braking system
              (on a high adhesion surface)
        19.6 Antilock braking system failure
        19.7 Additional tests on trailers equipped with EBS
    20 Basic performance tests - Laden
        20.1 Parking braking system tests
        20.2 Type O test (Service braking system cold brake
              effectiveness)
        20.3 Control failure of load-sensing device/function
              - Road test
        20.4 Type I test (fade test for trailers of categories
              O[2] and O[3])
        20.5 Type III test (fade test for vehicles of category
              O[4])
    Annex A (normative) Description of test vehicle, axle or brake
    Annex B (normative) Test report
    Annex C (informative) Figures
    Bibliography

    Abstract - (Show below) - (Hide below)

    Defines the test procedures for testing the operational performance requirements of towed vehicles of Category O (full trailers, semi-trailers, and centre-axle trailers) as defined in Annex 7 of the UN-ECE Consolidated Resolution on the Construction of Vehicles (R. E. 3).

    General Product Information - (Show below) - (Hide below)

    Committee AUE/15
    Development Note Supersedes 02/701575 DC and 06/30147334 DC. (05/2007)
    Document Type Standard
    Publisher British Standards Institution
    Status Current
    Supersedes

    Standards Referencing This Book - (Show below) - (Hide below)

    ISO 611:2003 Road vehicles Braking of automotive vehicles and their trailers Vocabulary
    ISO 11452-3:2016 Road vehicles — Component test methods for electrical disturbances from narrowband radiated electromagnetic energy — Part 3: Transverse electromagnetic (TEM) cell
    ISO 7637-3:2016 Road vehicles — Electrical disturbances from conduction and coupling — Part 3: Electrical transient transmission by capacitive and inductive coupling via lines other than supply lines
    ISO 7637-1:2015 Road vehicles Electrical disturbances from conduction and coupling Part 1: Definitions and general considerations
    ISO 1176:1990 Road vehicles Masses Vocabulary and codes
    ISO 11452-4:2011 Road vehicles Component test methods for electrical disturbances from narrowband radiated electromagnetic energy Part 4: Harness excitation methods
    ISO 11451-3:2015 Road vehicles Vehicle test methods for electrical disturbances from narrowband radiated electromagnetic energy Part 3: On-board transmitter simulation
    ISO 7637-2:2011 Road vehicles Electrical disturbances from conduction and coupling Part 2: Electrical transient conduction along supply lines only
    ISO 7638-2:2003 Road vehicles Connectors for the electrical connection of towing and towed vehicles Part 2: Connectors for braking systems and running gear of vehicles with 12 V nominal supply voltage
    ISO/PAS 12158:2002 Road vehicles Braking systems Temperature measuring methods
    ISO/TR 10605:1994 Road vehicles Electrical disturbances from electrostatic discharge
    ISO 3833:1977 Road vehicles Types Terms and definitions
    ISO/TR 10305:1992 Road vehicles Generation of standard EM field for calibration of power density meters from 20 kHz to 1 000 MHz
    ISO 11452-2:2004 Road vehicles Component test methods for electrical disturbances from narrowband radiated electromagnetic energy Part 2: Absorber-lined shielded enclosure
    ISO 11452-1:2015 Road vehicles Component test methods for electrical disturbances from narrowband radiated electromagnetic energy Part 1: General principles and terminology
    ISO 7638-1:2003 Road vehicles Connectors for the electrical connection of towing and towed vehicles Part 1: Connectors for braking systems and running gear of vehicles with 24 V nominal supply voltage
    ISO 11452-5:2002 Road vehicles Component test methods for electrical disturbances from narrowband radiated electromagnetic energy Part 5: Stripline
    ISO 11451-2:2015 Road vehicles Vehicle test methods for electrical disturbances from narrowband radiated electromagnetic energy Part 2: Off-vehicle radiation sources
    ISO 3583:1984 Road vehicles Pressure test connection for compressed-air pneumatic braking equipment
    ISO 11452-7:2003 Road vehicles Component test methods for electrical disturbances from narrowband radiated electromagnetic energy Part 7: Direct radio frequency (RF) power injection
    ISO 7637-0:1990 Road vehicles Electrical disturbance by conduction and coupling Part 0: Definitions and general
    ISO 11451-4:2013 Road vehicles Vehicle test methods for electrical disturbances from narrowband radiated electromagnetic energy Part 4: Bulk current injection (BCI)
    ISO 11451-1:2015 Road vehicles Vehicle test methods for electrical disturbances from narrowband radiated electromagnetic energy Part 1: General principles and terminology
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