Well, after a check of the source where I found those names of aviator pioneers, I understand that the name you are searching for is Koechlin (the one I wrote uncorrectly); The name of the plane builder (I post two pictures of the Pischoff-Koechlin monoplane from 1908) is Paul Koechlin. I actually don't have idea if he is the same Koechlin who built the quiz car. Under one of the pictures, there is a description of the engine used for that monoplane, and I guess it could be similar to the one of the quiz car, obviously I have no prove