Combustion chamber volume
Combustion chamber volume
(OP)
I was trying to figure out how the get the volume of a combustion chamber in a cylinder head, and I hit on this method:
1. Roll back the model to where the chambers were created (this removes the ports and spark plug hole).
2. Start a sketch on the head surface, select the outline of the chamber, and convert entities to add it to the sketch.
3. In the extrude box, uncheck merge and then select extrude to body.
4. Go to mass properties, select the new body, and the volume will be calculated.
It seems to work quite well, and any changes will update the chamber solid body as well.
Are there some other or easier ways?
1. Roll back the model to where the chambers were created (this removes the ports and spark plug hole).
2. Start a sketch on the head surface, select the outline of the chamber, and convert entities to add it to the sketch.
3. In the extrude box, uncheck merge and then select extrude to body.
4. Go to mass properties, select the new body, and the volume will be calculated.
It seems to work quite well, and any changes will update the chamber solid body as well.
Are there some other or easier ways?






RE: Combustion chamber volume
Regards,
Scott Baugh, CSWP
3DVision Technologies
www.3dvisiontech.com
www.scottjbaugh.com
FAQ731-376
FAQ559-716 - SW Fora Users
RE: Combustion chamber volume
Don't know any other way.
Regards
RE: Combustion chamber volume
RE: Combustion chamber volume
You will need the piston and valve to accurately calculate
the volume. The valve should be seated (closed) and the piston positioned at TDC (Top dead center). The piston may travel up beyond the head gasket (bottom of the cyl head) depending on the shape of the piston and the compression ratio of the engine.
Subract the valve, head, and piston from a cyl created larger than the bore (to fill the space). The volume
of the new solid can be calculated in UG by using information - object.
This is different than calculating the CC's of the engine. That is calculated by using the bore and stroke.
visit link to calculate CC's
http://www.dunegoon.org/displacement.html
Peter
Baden, Ontario
RE: Combustion chamber volume