Gnome 9-B2 Monosoupape rotary engine assembly animation (11min.)
06-16-2020, 07:58 PM
#1
homo ludens modelisticus
Thread Starter
Join Date: Jul 2005
Location: near Nijmegen, Nederland
Posts: 1,238
Gnome 9-B2 Monosoupape rotary engine assembly animation (11min.)
Rotary engines and Sopwith Camel info by Pierre Janssen
www.PJvision.nl
More rotary engine animations and videos by Pierre Janssen, Clerget, Bentley, Gnome, Le Rhône:
www.youtube.com/channel/UCbyGXbMxmWfH8XsXzmmddhQ/videos
www.PJvision.nl
More rotary engine animations and videos by Pierre Janssen, Clerget, Bentley, Gnome, Le Rhône:
www.youtube.com/channel/UCbyGXbMxmWfH8XsXzmmddhQ/videos
06-22-2020, 10:25 PM
#2
Super Contributor
Join Date: Oct 2006
Location: Hesperia, So. Calif
Posts: 19,264
Wow, They had Roller Lifters and Rocker Arms way back then 
Hmmm where does the exhaust go, into the crank case where does the exhaust Exit, the valve is for fresh air and the cylinders have exhaust ports on the bottom.
Hmmm where does the exhaust go, into the crank case where does the exhaust Exit, the valve is for fresh air and the cylinders have exhaust ports on the bottom.
Last edited by CHELLIE; 06-22-2020 at 10:52 PM.
06-25-2020, 12:03 AM
#3
Super Contributor
Join Date: Jul 2008
Location: Cheshire, UK
Posts: 1,971
Chellie
The single valve was the exhaust but it also let in air.
The monosoupape (single valve) cycle although a 4 stroke has elements of a 2 stoke included in that the petrol was injected directly into the hollow but stationary crank shaft and cylinder transfer ports were used to get the very rich mixture above the piston. The exhaust valve stayed open well past TDC on the exhaust stroke so it introduced air into the cylinder to create a combustible (hopefully) mixture. Drawing air in via the exhaust valve also helped to cool it. Without high temperature steels burning exhaust valves was a real problem.
The monosoupape cycle was inefficient with a relatively high fuel consumption but the resulting engine was simple, light and for the time pretty reliable. It helped that Société Des Moteurs Gnome were excellent machinists making the entire engine from solid steel billets. .
The single valve was the exhaust but it also let in air.
The monosoupape (single valve) cycle although a 4 stroke has elements of a 2 stoke included in that the petrol was injected directly into the hollow but stationary crank shaft and cylinder transfer ports were used to get the very rich mixture above the piston. The exhaust valve stayed open well past TDC on the exhaust stroke so it introduced air into the cylinder to create a combustible (hopefully) mixture. Drawing air in via the exhaust valve also helped to cool it. Without high temperature steels burning exhaust valves was a real problem.
The monosoupape cycle was inefficient with a relatively high fuel consumption but the resulting engine was simple, light and for the time pretty reliable. It helped that Société Des Moteurs Gnome were excellent machinists making the entire engine from solid steel billets. .
Last edited by quorneng; 08-10-2020 at 02:23 AM.
06-25-2020, 07:06 PM
#4
homo ludens modelisticus
Thread Starter
Join Date: Jul 2005
Location: near Nijmegen, Nederland
Posts: 1,238
Merci
Another Nederlander, building two works of art:
translate...Nieuport 28 C1, schaal 1:3 met scratchbuild 475cc Gnome Monosoupape
Another Nederlander, building two works of art:
translate...Nieuport 28 C1, schaal 1:3 met scratchbuild 475cc Gnome Monosoupape
Last edited by ron_van_sommeren; 06-25-2020 at 08:58 PM.
