%0 Conference Paper %K HCCI %K Combustion timing %K Fuel additives %K Ion sensing %K Sparkplug %A Samveg Saxena %A Jyh-Yuan Chen %A Robert W Dibble %B Proceedings of the Combustion Institute %D 2011 %N 2 %P 3081-3088 %R 10.1016/j.proci.2010.07.046 %S Combustion Institute %T Increasing the signal-to-noise ratio of sparkplug ion sensors through addition of a potassium acetate fuel additive %V 33