A Systematic Approach of Improving Reliability Process through Development and Application of On-Board Diagnostics System, for Commercial Vehicle

Paper #:
  • 2015-26-0101

Published:
  • 2015-01-14
Citation:
Sivasubrahmaniyan, A., Jaishwal, A., Warrier, G., Tharaneetharan, S. et al., "A Systematic Approach of Improving Reliability Process through Development and Application of On-Board Diagnostics System, for Commercial Vehicle," SAE Technical Paper 2015-26-0101, 2015, https://doi.org/10.4271/2015-26-0101.
Pages:
12
Abstract:
This paper describes a methodology for design and development of On-Board Diagnostic system (OBD) with an objective to improve current reliability process in order to ensure design & quality of the new system as per requirement of commercial vehicle technology.OBD is a system that detects failures which adversely affect emissions and illuminates a MIL (Malfunction Indicator Lamp) to inform the driver of a fault which may lead to increase in emissions. OBD provides standard and unrestricted access for diagnosis and repair.Below given Figure 1 shows the working principle of OBD system. The exhaust emission of a vehicle will be controlled primarily by Engine Control Unit (ECU) and Exhaust Gas After Treatment Control (EGAS CU). These two control units determine the combined operating strategies of the engine and after treatment device.Figure 1Modern Control Architecture for OBD System in Commercial vehicle [1]
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