Misfire Diagnostic For Flex Vehicles - A Case Study

2009-36-0247

10/06/2009

Event
SAE Brasil 2009 Congress and Exhibit
Authors Abstract
Content
The exigency of misfire diagnosis is an important part of the OBDBr-2 Normative Instruction that will be valid from January, 1st 2010. OBD means an on-board diagnostic system for emission control which must have the capability if identifying the likely area of malfunction by means of fault codes stored in computer memory. The Normative Instruction requires that the OBDBr-2 system must detect engine misfire and indicates the vehicle driver, through the MIL (Malfunction Indicator Light), when the misfire ratio causes emissions above the established limits (NMHC = 0,30 g/km, CO = 4,11 g/km e NOx = 0,75 g/km).Besides, the misfire diagnosis must be active during all vehicle useful life, since its manufacturing and under the most operational conditions.
Meta TagsDetails
DOI
https://doi.org/10.4271/2009-36-0247
Pages
8
Citation
Silveira, A., Ramos, D., Domahovski, S., and Castro, A., "Misfire Diagnostic For Flex Vehicles - A Case Study," SAE Technical Paper 2009-36-0247, 2009, https://doi.org/10.4271/2009-36-0247.
Additional Details
Publisher
Published
Oct 6, 2009
Product Code
2009-36-0247
Content Type
Technical Paper
Language
English