1967-02-01

The Determination of Aldehydes in Automobile Exhaust Gas 670123

A method for the sampling and determination of exhaust aldehydes and ketones is described. The procedure consists of absorbing and converting these compounds to the solid 2, 4 di-nitrophenylhydrazone derivatives. Results are reported as total aldehydes and/or the derivatives separated into individual, identifiable components by chromatographic techniques.
Exhaust emission data employing this procedure are presented for a limited number of vehicles with and without exhaust control systems. Total aldehyde levels (as formaldehyde) were found to range from about 20 to over several hundred parts per million depending on the mode of operation and the adjustment of such variables as air-fuel ratio, spark timing, and exhaust emission control devices. Effects of these variables on aldehyde emissions are discussed.
The relationship of the chemical structure of inducted fuel to aldehyde emissions is also touched upon. The amount of individual aldehydes was found to be related to the parent fuel to a considerable extent for pure individual hydrocarbon fuels. This relationship is greatly diminished, however, within the design limitations of current full boiling practical gasolines.

SAE MOBILUS

Subscribers can view annotate, and download all of SAE's content. Learn More »

Access SAE MOBILUS »

Members save up to 18% off list price.
Login to see discount.
Special Offer: Download multiple Technical Papers each year? TechSelect is a cost-effective subscription option to select and download 12-100 full-text Technical Papers per year. Find more information here.
We also recommend:
TECHNICAL PAPER

Emission Control With Lean Mixtures

760226

View Details

TECHNICAL PAPER

Requirements Setting, Optimization and “Best Fit” Application of AIS Hydrocarbon Adsorption Devices for Engine Evaporative Emissions Breathing Loss Control

2005-01-1104

View Details

TECHNICAL PAPER

Effects of Exhaust Emission Control Devices and Fuel Composition on Speciated Emissions of S.I. Engines

922180

View Details

X