New Standard from Last Update.

1. SCOPE

1.1 This Indian standard (Part 3) defines and specifies open-loop and closed loop test methods for determining the transient driving behaviour in frequency and time domain. The parameters, such as steering wheel angle, steering wheel torque, roll angle, yaw rate, body side slip angle, lateral acceleration, longitudinal velocity, pitch angle, damping and response time etc. are used to evaluate the vehicle response and controllability during transient maneuvers tests.

1.2 The maneuvers included in this standard may not represent the real driving conditions but they are useful for obtaining the vehicle response and control parameters in controlled environment with specified test conditions. This standard is applicable for M1 category of vehicles as defined in IS14272.

1.3 This standard provides guidelines for various test methods used to evaluate transient response behaviour in controlled environment with specified test conditions. Test and tyre conditions have a strong influence on test results. Only vehicle dynamic properties obtained under identical test and tyre conditions are comparable. Therefore, it is not recommended to use this standard for regulatory purposes.

2. REFERENCES

The following standards contain provisions, which through reference in this text, constitute provisions of this standard. At the time of publication the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below:

14272 : 2011 Automotive vehicles - Types - Terminology (first revision)

17128 (Part 1) : 2019 Automotive vehicles - Vehicle dynamics test methods: Part 1 General test conditions

ISO 15037-1 : 2019 Road vehicles - Vehicle dynamics test methods - Part 1: General conditions for passenger cars