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.
Citation: Kuroda, H., Nakajima, Y., Hayashi, Y., and Sugihara, K., "AN APPROACH TO THE LOW EMISSION ENGINE WITH THE CONSIDERATION OF FUEL ECONOMY," SAE Technical Paper 750416, 1975, https://doi.org/10.4271/750416. Download Citation
Author(s):
H. Kuroda, Y. Nakajima, Y. Hayashi, K. Sugihara
Affiliated:
Nissan Motor Co., Ltd. Yokosuka, Japan
Pages: 27
Event:
1975 Automotive Engineering Congress and Exposition
ISSN:
0148-7191
e-ISSN:
2688-3627
Related Topics:
Low emission vehicles (LEV) and zero emission vehicles (ZEV)
Fuel economy
Ignition timing
Exhaust systems
Emissions
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