Chapuis-Dornier

Chapuis-Dornier was a French manufacturer of proprietary engines for automobiles from 1904 to 1928 in Puteaux Paris. Between 1919 and 1921 it displayed a prototype automobile, but it was never volume produced.

Chapuis-Dornier engines were used by cyclecars such as :

Between 1919 and 1921 Chapuis-Dornier displayed a prototype automobile at the Paris salons, equipped with a 3-litre, four cylinder engine, but this never resulted in volume production.

...
Wikipedia