Steering Linkage Induced Vehicle Pull during Straight Line Braking Tata Motors Limited

Format:

Conference/Event

Author/Creator:

Ojha, Ojha, author.

Contributor:

Bhalerao, Jitendra

Paluskar, Prajakta

Conference Name:

SAE 2012 Commercial Vehicle Engineering Congress (2012-10-02 : Rosemont, Illinois, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2012

Summary:

The vehicle pull (sideways) is a complex outcome of manyparameters in an automobile vehicle. This is mainly due tosteering, suspension, brake, wheels and chassis parameters. Theroad conditions like road camber also plays an important role invehicle pull behavior. All efforts are put in design andmanufacturing processes to maintain controlled vehicle pull innormal driving condition. Even though normal vehicle pull seems tobe in acceptance limit (subjectively), its intensity increases manyfolds at the time of harsh braking. In these kind of panicsituations where driver firmly holds on the steering wheel, it isexpected that the vehicle should stop without deviating too muchsideways from its intended straight line path to avoid any kinds ofaccidents.This work is an outcome of systematic study carried out tounderstand the root cause of brake pull as a field complaint oncurrent production vehicles and adopting best possible solutions tominimize the brake pull. This paper presents an experimental studyand comparison of contribution of two basic kinds of steeringlinkage layouts type 1 and type 2 (detailed descriptions followedin section 1) on RHD (right hand drive) vehicle, used infront-wheel-steered vehicles having independent suspension onvehicle pull and brake pull. Brainstorming resulted in somecritical hypothesis about possible contribution of these two basiclayouts on vehicle pull while braking which was further supportedby primary CAE (computer-aided engineering) analysis usingclassical approach (ADAMS® Model). Same has been validated throughexperimental tests also. While both of these mechanisms are widelyused by different automobile OEM's (original equipmentmanufacturers) as they fulfill most of the design requirements ofsteering systems, the in-depth analysis of contribution of thesetwo layouts on brake pull surely puts one on top of the other. Thework helps in understanding the finer details of steering linkagedesign requirements and provides design guidelines to deliverbetter product through improved safety and better customersatisfaction

Notes:

Vendor supplied data

Publisher Number:

2012-01-1916

Access Restriction:

Restricted for use by site license