Abstract
Air fuel ratio has a great influence on emissions, power and economy of a CNG engine. When the CNG engine is at transient conditions, the air fuel ratio can not be precisely controlled at theoretical value by traditional means, which impairs the efficiency of catalytic converter and increases the emissions of CNG engines. To overcome the shortcomings of existing technology, a device and its operating method measuring air fuel ratio of CNG engines synchronously are developed. The moments which intake and exhaust valves open are used as the trigger signals for ECU to collect the test data of CNG engine simultaneously by sensors. Thus the measured air, intaking and than exhausting the cylinder, is at the same working cycle. And the throttle angle, the intake air, the speed and air fuel ratio of the CNG engine are measured simultaneously in transient conditions.
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© 2011 Springer-Verlag Berlin Heidelberg
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Li, X., Wang, R., Liu, B. (2011). Synchronous Measuring Device and Its Operating Method for Air Fuel Ratio of CNG Engines. In: Lin, S., Huang, X. (eds) Advances in Computer Science, Environment, Ecoinformatics, and Education. CSEE 2011. Communications in Computer and Information Science, vol 215. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-23324-1_20
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DOI: https://doi.org/10.1007/978-3-642-23324-1_20
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-23323-4
Online ISBN: 978-3-642-23324-1
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