1975-02-01

AN APPROACH TO THE LOW EMISSION ENGINE WITH THE CONSIDERATION OF FUEL ECONOMY 750416

A number of approaches to the development of low emissions engines have been reported in the literature. Many of these approaches, however, have reduced emissions by retarding ignition timing. This increases exhaust gas temperatures for more complete HC oxidation in the exhaust system but results in a fuel economy penalty.Previous studies by the authors indicated that NOx can be effectively reduced with judicious use of EGR. While this may result in increased HC emissions, under some conditions it also can result in improved fuel economy.The data reported in this paper demonstrate that the use of EGR is capable of reducing NOx emissions and octane number requirements while improving fuel economy. Any resultant increase in HC emissions can be controlled with an efficient HC/CO oxidation catalyst.

SAE MOBILUS

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

Access SAE MOBILUS »

Members save up to 43% off list price.
Login to see discount.
Special Offer: Purchase more aerospace standards and aerospace material specifications and save! AeroPaks off a customized subscription plan that lets you pay for just the documents that you need, when you need them.
X