A Technique for Endurance Testing of Oxidation Catalytic Reactors 740246

The conventional method of catalyst endurance testing on vehicles is unsuitable for large-scale catalyst development, since the time and cost are prohibitive. This paper reviews a series of experiments comparing the effects of two methods of engine test-bed aging on catalyst deterioration with the normal vehicle endurance test. The test-bed engines caused a higher rate of catalyst deterioration than the vehicle, and there are indications that this effect is related to the intake mixture strength of the engine.
From these experiments, a technique for accelerated catalyst aging was derived. The reactor is aged on a test bed for three periods, each of 100 h. At the 0, 100, 200, and 300 h stages, the reactor is removed from the test bed and transferred to another engine for detailed tests of catalyst performance. A 1975 CVS test on a vehicle is also included in each set of experiments. Results from some of the catalytic reactors, tested by this technique, are presented.


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


Members save up to 40% off list price.
Login to see discount.
Special Offer: With TechSelect, you decide what SAE Technical Papers you need, when you need them, and how much you want to pay.