Minimizing the Hydrocarbon Emission of a Spark-Ignited Engine at Cold Condition and Non-Stationary Operation 920398
This paper presents a method that enables a significant reduction of the hydrocarbon massemission and other pollutants of the exhaust gas from the most popular type of engine used for passenger cars: The four-stroke, spark ignited piston engine.
The method is based on influencing only the internal process by a sophisticated concept of motor-controlling. The optimized parameters are A/F-ratio and timing of heat release. Any further devices concerning ignition system, injection system, exhaust system or sensors are not required.
The method is proven at cold condition and non-stationary operation. The tests have been carried out on a close loop controlled engine teststand that is able to simulate a realistic driving curve.
The method is practicable even and specially soon after the start, and it can be optimized in combination with the threeway-catalyst.
Citation: Schmidt, H., "Minimizing the Hydrocarbon Emission of a Spark-Ignited Engine at Cold Condition and Non-Stationary Operation," SAE Technical Paper 920398, 1992, https://doi.org/10.4271/920398. Download Citation
Author(s):
Henning Schmidt
Pages: 10
Event:
International Congress & Exposition
ISSN:
0148-7191
e-ISSN:
2688-3627
Related Topics:
Hydrocarbons
Ignition systems
Exhaust systems
Sensors and actuators
SAE MOBILUS
Subscribers can view annotate, and download all of SAE's content.
Learn More »
