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A System for the Modal Analysis of Exhaust Emissions from Motorcycles
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English
Abstract
Devices for use in control of exhaust emissions have become indispensable to motorcycles. In order to evaluate quantitatively the effect of each device, the modal analysis system has to be required.
The Modal Analysis System is one that classifies any driving schedule which is used for emissions measurement into four modes: idle, acceleration, cruise, and deceleration; then measures the emissions continuously using a mini-computer which accumulates the results of the analysis by mode.
Instead of CO2 tracer method, we introduced the method of diluted exhaust gas measurement.
In order for the system to produce reliable measurements, the accuracy of the total installation must be ensured.
This paper describes the improvements of accuracy of analysers, technique on handling delay time and the verifications on the modal analysis system.
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Citation
Kajikawa, R. and Kimura, I., "A System for the Modal Analysis of Exhaust Emissions from Motorcycles," SAE Technical Paper 810297, 1981, https://doi.org/10.4271/810297.Also In
References
- Tanaka T. Nakano H. Usami I. Abe. N. “Toyota's Inspection System for Vehicular Emission at Assembly Line.” Paper 760782 presented at SAE Michigan Meeting, B-22 October 1976
- Wiers W.W. Scheffler C.E. “Carbon Dioxide (CO 2 ) Tracer Technique for Modal Mass Exhaust Emission Measurement.” Paper 720126
- U.S.A. Environmental Protection Agency. Federal Register 42 No.3 January 5
- Eto A. Takamura A. Kajikawa R. “The Development of high Accuracy Chassis Dynamometer.” Paper presented at ISATA Graz 10 14 Sept 1979.