Knock Detection for a Large Displacement Air-Cooled V-Twin Motorcycle Engine Using In-Cylinder Ionization Signals 2008-32-0028
To obtain the maximum output power and fuel economy from an internal combustion engine, it is often necessary to detect engine knock and operate the engine at its knock limit. This paper presents the ability to detect knock using in-cylinder ionization signals on a large displacement, air-cooled, “V” twin motorcycle engine over the engine operational map. The knock detection ability of three different sensors is compared: production knock (accelerometer) sensor, in-cylinder pressure sensor, and ionization sensor. The test data shows that the ionization sensor is able to detect knock better than the production knock sensor when there is high mechanical noise present in the engine.
Citation: Danne, N., Hung, D., Zhu, G., and McKoskey, J., "Knock Detection for a Large Displacement Air-Cooled V-Twin Motorcycle Engine Using In-Cylinder Ionization Signals," SAE Technical Paper 2008-32-0028, 2008, https://doi.org/10.4271/2008-32-0028. Download Citation
Nicholas M. Danne, David L. S. Hung, Guoming G. Zhu, Jay McKoskey
Visteon Corporation, Michigan State University, Polaris Industries Inc
Small Engine Technology Conference & Exposition