Wiring Harness Protection Against Short Circuit Condition: Design Calculation and Vehicle Level Validation TATA MOTORS LTD

Format:

Conference/Event

Author/Creator:

Ladikkar, Ladikkar, author.

Conference Name:

SAE 2011 World Congress & Exhibition (2011-04-12 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2011

Summary:

Day by day customer's demands on vehicle features and functionalities are increasing which results in complex wiring harness systems. This in turn requires robust protection in the circuits to ensure proper working as well as avoid malfunction or damage to wiring system during short circuit or over current scenarios in the vehicle.Short circuit test gives you assurance of wire capacity to withstand high current till the fuse blow. If fuse don't blow within specified time as per selection of fuse, it is essential to check wire size as well as fuse rating.This paper gives details of short circuit and over load test of circuits to verify its performance. The methodology involves the compliance to S.C test criteria at every stage of development through simulation, bench testing and vehicle level validation. The various acceptance criteria's includes requirements like no damage, melting or smoke from Wiring Harness, wire insulation shall not exceed maximum operating temperature specified for wires, no thermal/fire incidence on the vehicle under short circuit or overload phenomenon.Considering the simulation results and vehicle architecture we can find out required wire size, wire type and fuse rating. The validation can then be done on vehicle. This Co-relation between simulation and validation in turn helps in more accurate prediction and reduces development time considerably.The methodology was evolved and implemented on TATA MOTORS Aria Car. The same methodology is being implemented in the new models under development

Notes:

Vendor supplied data

Publisher Number:

2011-01-1435

Access Restriction:

Restricted for use by site license