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SAE J254-1993 (R)INSTRUMENTATION AND TECHNIQUES FOR EXHAUST GAS EMISSIONS MEASUREMENT
Foreword--This Document has also changed to comply with the new SAE Technical Standards Board format.
1. Scope-This SAE Recommended Practice establishes uniform laboratory techniques for the continuous andbag-sample measurement of various constituents in the exhaust gas of the gasoline engines installed in passenger cars and light-duty trucks. The report concentrates on the measurement of the following components in exhaust gas: hydrocarbons(HC), carbon monoxide(CO), carbon dioxide(CO2), oxygen (O2), and nitrogen oxides(NOx). NO, is the sum of nitric oxide(NO) and nitrogen dioxide(NO2).A complete procedure for testing vehicles may be found in SAE J1094.
This document includes the following sections:
1. Scope
2. References
3. Emissions Sampling Systems
4. Emissions Analyzers
5. Data Analysis
6. Associated Test Equipment
7. Test Procedures
1.1 Purpose-The purpose of this document is to describe means for the analysis of exhaust emissions. This procedure has been developed after thorough review and consideration of test techniques in use in laboratories of federal and state governments, and the automobile and petroleum industries.
2. References
2.1 Applicable Publications-The following publications form a part of this specification to the extent specified herein. The latest issue of SAE publications shall apply.
2.1.1 SAE PUBLICATIONS-Available from SAE,400 Commonwealth Drive, Warrendale, PA 15096-0001.
SAE J1094Constant Volume Sampler System for Exhaust Emissions Measurement
SAE J1263-Road Load Measurement and Dynamometer Simulation Using Coastdown Techniques
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