BS ISO 21994:2022 – TC

$217.84

Tracked Changes. Passenger cars. Stopping distance at straight-line braking with ABS. Open-loop test method

Published By	Publication Date	Number of Pages
BSI	2022	84

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Categories: 43.040.40 - Braking systems, BSI

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PDF Catalog

PDF Pages	PDF Title
50	National foreword
55	Foreword
56	Introduction
57	1 Scope 2 Normative references 3 Terms and definitions 4 Principle
58	5 Variables 5.1 Reference system 5.2 Variables to be measured 6 Measuring equipment 6.1 Description
59	6.2 Transducer installation 6.3 Calibration 6.4 Data processing 7 Test conditions 7.1 General test conditions 7.2 General data
60	7.3 Test track 7.4 Environmental conditions 7.5 Test vehicle 7.5.1 General vehicle condition 7.5.2 Tyres
61	7.5.3 Braking system 7.5.4 Loading conditions of the vehicle 8 Test procedure 8.1 Test preparation 8.1.1 Defining the measurement distance 8.1.2 Conditioning tyres and brake system
62	8.2 Measurements 8.2.1 Brake disc temperature 8.2.2 Initial driving condition 8.2.3 Brake pedal actuation
63	8.2.4 Conditions during braking 8.2.5 Number of measurements 9 Data evaluation and presentation of results 9.1 General
64	9.2 Nomenclature of distances and decelerations 9.3 Determination of normalized stopping distance sA100,norm 9.3.1 Determination of mean deceleration of a single test run
65	9.3.2 Determination of the normalized stopping distance of a single test run 9.3.3 Determination of mean deceleration and mean normalized stopping distance 9.4 Determining of ABS-braking distance sL90,norm(100) (optional)
66	9.5 Determination of normalized build-up distance sF10,norm (optional)
67	Annex A (informative) Test report − General data
69	Annex B (informative) Test report − Test conditions and results
71	Annex C (informative) Test sequence, specific terms and background information
76	Annex D (normative) Method for determination of FABS
80	Annex E (normative) Requirements for measurements and measuring equipment
82	Annex F (normative) Structure of the stopping distance calculation
83	Bibliography