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BS ISO 23365:2022

BS ISO 23365:2022

$189.07

Heavy commercial vehicles and buses. Definitions of properties for the determination of suspension kinematic and compliance characteristics

Published By Publication Date Number of Pages
BSI 2022 46
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PDF Catalog

PDF Pages PDF Title
2 National foreword
8 Foreword
9 Introduction
11 1 Scope
2 Normative references
3 Terms and definitions
14 4 Principle
15 5 Variables
5.1 Reference system
5.2 Variables to be determined
5.2.1 Vehicle geometry
5.2.2 Motion variables
5.2.3 Forces and moments
16 5.2.4 Steering geometry
5.2.5 Kinematics
17 5.2.6 Compliances
5.2.7 Ride and roll stiffness
18 5.2.8 Force reactions
6 Measuring equipment
6.1 Measurement accuracy
19 6.2 Derived variable accuracy
7 Suspension parameter measurement guidance
7.1 Steering geometry
7.1.1 Steering ratio
20 7.1.2 Overall steering ratio (iS)
21 7.1.3 Ackermann error
7.1.4 Inclination angle (ĪµW)
7.1.5 Camber angle (ĪµV)
7.1.6 Castor angle (Ļ„)
7.1.7 Castor offset at ground (nk)
22 7.1.8 Castor offset at wheel centre (nĻ„)
7.1.9 Steering-axis inclination angle (Ļƒ)
7.1.10 Steering-axis offset at ground (rk)
7.1.11 Steering-axis offset at wheel centre (rĻƒ)
23 7.1.12 Normal steering-axis offset at ground (qT)
7.1.13 Normal steering axis offset at wheel centre (qW)
7.1.14 Scrub radius (r)
24 7.2 Kinematics
7.2.1 General
25 7.2.2 Ride track change (bz)
7.2.3 Ride track change gradient (bzā€™)
26 7.2.4 Ride steer (Ī“z)
7.2.5 Ride steer gradient (Ī“zā€™)
7.2.6 Total ride toe (Ī“z(R-L))
7.2.7 Total ride toe gradient (Ī“z(R-L)ā€™)
7.2.8 Ride camber (ĪµVz)
7.2.9 Ride camber gradient (ĪµVzā€™)
7.2.10 Ride castor (Ļ„z)
27 7.2.11 Ride castor gradient (Ļ„zā€™)
7.2.12 Roll steer (ļæ¼)
7.2.13 Roll steer gradient (ļæ¼)
7.2.14 Roll camber (ļæ¼)
7.2.15 Roll camber gradient (ļæ¼)
28 7.3 Compliances
7.3.1 General
7.3.2 Longitudinal force compliance, with suspension torque (ļæ¼)
29 7.3.3 Longitudinal force compliance, without suspension torque (ļæ¼)
7.3.4 Longitudinal force camber compliance, with suspension torque (ļæ¼)
7.3.5 Longitudinal force camber compliance, without suspension torque (ļæ¼)
7.3.6 Longitudinal force steer compliance, with suspension torque (ļæ¼)
30 7.3.7 Longitudinal force steer compliance, without suspension torque (ļæ¼)
7.3.8 Longitudinal force windup compliance, with suspension torque (ļæ¼)
7.3.9 Longitudinal force windup compliance, without suspension torque (ļæ¼)
31 7.3.10 Lateral force compliance at the wheel centre (ļæ¼)
7.3.11 Lateral force compliance at the contact centre (ļæ¼)
7.3.12 Lateral force camber compliance (ļæ¼)
7.3.13 Lateral force steer compliance (ļæ¼)
32 7.3.14 Aligning moment camber compliance (ļæ¼)
7.3.15 Aligning moment steer compliance (ļæ¼)
7.4 Ride and roll stiffness
7.4.1 General
7.4.2 Ride rate (KZ)
33 7.4.3 Suspension ride rate (KZK)
7.4.4 Roll stiffness (ļæ¼)
7.4.5 Suspension roll stiffness (ļæ¼)
34 7.4.6 Auxiliary roll stiffness (ļæ¼)
7.4.7 Auxiliary suspension roll stiffness (ļæ¼)
7.4.8 Vertical displacement tandem axle load redistribution stiffness (Ktz)
7.4.9 Vertical suspension displacement tandem axle load redistribution stiffness (KtzK)
35 7.4.10 Tandem axle twist stiffness (KĻ†t)
7.4.11 Tandem axle suspension twist stiffness (KĻ†tK)
7.4.12 Tyre normal stiffness (KZT)
7.5 Force reactions
7.5.1 Anti-squat and anti-dive force gradient (ļæ¼)
36 7.5.2 Jacking force gradient (ļæ¼)
7.5.3 Longitudinal force tandem axle load redistribution gradient (ļæ¼)
8 Data presentation
8.1 Steering ratio
40 8.2 Kinematic properties
41 8.3 Compliance properties
42 8.4 Ride and roll stiffness properties
8.5 Force reaction properties
44 Annex A (informative) Mathematic fit of steering ratio as a function of steering wheel angle
45 Bibliography

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BS ISO 23365:2022
$189.07