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International Journal
of Computer Engineering in Research Trends (IJCERT)

Scholarly, Peer-Reviewed, Platinum Open Access and Multidisciplinary




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International Journal of Computer Engineering in Research Trends. Scholarly, Peer-Reviewed, Platinum Open Access and Multidisciplinary

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OBD-II and Oxygen Sensor: Review the I.C Engine - Emissions related Performance

DR. PORAG KALITA, , , ,
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Abstract
Increased awareness regarding the adverse effects of pollutants from automobile exhaust gases has been the main driving force for implementation of more and more stringent legislation on automobile exhaust emissions in many Countries. On Board Diagnostic (OBD), regulations in the USA for light and medium duty vehicles (I. C. Engines) are introducing to implement the air quality standard. California and the Federal Government used a driving cycle to certify 1966 and newer models which referred to as either California Cycle or the Federal Test Procedure (FTP). The California Air Resource Board (CARB) and the objective to reduce hydrocarbon (HC) emission caused by malfunction of the vehicles emission control systems adopted the California code of Regulations (CCR) known as OBD – II. The diagnosis is based on the oxygen sensor response time that is the amount of time to complete a switch from rich to lean or lean to rich transition that gives the ability to control the engine at stochiometric Air Fuel ratio. Typical values of lean mean voltage and rich mean voltage are 300 to 600 mill volts respectively. For post-cat O2 sensor, in particular, voltage level checks and heater systems checked and done and the failure thresholds for the post O2 sensor, diagnostic must not be set at a point beyond the failure limit where the catalyst diagnostic is affected.


Citation
PORAG KALITA et al., International Journal of Computer Engineering In Research Trends Volume 3, Issue 3, March-2016, pp. 98-105


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DOI:10.22362/ijcert


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