Interesting engine exhibited at the 1908 Paris Air Show.

-Gobron-Brillié was founded in 1898 by Gustav Gobron and Eugène Brillié, who designed this particular motor. They were based in Boulogne-sur-Seine, near Paris, building this engine until 1906. They manufactured automobiles until 1930.

-The shown engine gave 50 CV and had 8 cylinders in X. Below we see it mounted on the Voisin De-Caters in 1910.

“Gobron-Brillié engine”

“Gobron-Brillié on Voisin”

-The brand had a logo that was also used on their built cars.

“Logo”

-The engine consisted of two cylinders placed opposite each other, together with two more, forming an X. This engine could be extended.

“Schematic diagram 1”

“Schematic diagram 2”

-The intake valves are automatic and the exhaust valves are controlled. They have double ignition and are water cooled.

-The power, as has been said, was 50/60 CV when mounted on the 1910-12 Voisin. Other information gives us 80 CV at 1,150 rpm.

-We know these engines for their cross arrangement, but now we have got more details for the inner mechanism that is worthy to be mentioned.

“Detailed engine view”

“Front and side cross-section”

-As indicated in each cylinder group there were two with two pistons each. They were mounted oppositely with a very original connection that we would see repeated in one of the two German Junkers engine versions.

-The piston connection is done in the usual way with the inner ones, and the outer pistons move in unison the two pistons that lift the crankshaft through a bridge attached to atypical cranks composed of two pull-rods.

-In the side cross-section we see that the two connecting rods are connected with the crankshaft by the two end pins.

-The intake valves were automatic and the exhaust valves controlled. The two magnetos are clearly visible in the photograph we showed above.

-Gobrón-Brillié engines are sometimes mentioned simply as "Gobrón".

From Appendix 6: Below we show a new illustration with the Gobrón-Brillié engine mechanism that we mentioned in the main text, we can clearly see it in this drawing.

-The system is equal to one of the engines that later was patented by Junkers with small variants.

“Defective reproduction for this engine”
(to be substituted)