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Browse Standards J3349_202208

Current REVISED 2022-08-05

NOx Tracking Parameter Accuracy J3349_202208

This SAE Information Report provides SAE’s recommendations for meeting the requirements for REAL NOx accuracy demonstration and for the implementation of REAL NOx binning requirements as defined in OBD regulations 13 CCR 1971.1 and 13 CCR 1968.2.

J3349_202208

2022-08-05

Latest

Revised

J3349_202110

2021-10-19

Historical

Issued

DOI: https://doi.org/10.4271/J3349_202208

Issuing Committee: Vehicle E E System Diagnostic Standards Committee

Publisher: SAE International

Pages: 18

Rationale: A unit conversion error in Equation 14 from a previously published informational report was found. Equation 14 will be updated to include the correct equation to calculate NOx emissions rate when exhaust flow is in units of (g/s).

Included in:
On-Board Diagnostics for Light and Medium Duty Vehicles Subscription
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Related Topics:

Diesel particulate filters

Engine control systems

Nitrogen oxides

On-board diagnostics (OBD)

Emissions measurement

Greenhouse gas emissions

Boost pressure

Selective catalytic reduction

Engine components

Manifolds

Also known as: SAE J 3349

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