**PARAMETER RELATIONSHIPS: FACTS THAT SOME PEOPLE FIND HARD TO BELIEVE**

You will find specific mathematical relationships between the engine’s parameters, and specific engine parameters with mathematical relationships to the camshaft. It is these mathematical relationships that determine the engine's volumetric efficiency capability at a given RPM, or determine the peak HP RPM limit required to acheive a given VE%. These parameter relationships can then determine the required values for intake valve area, average intake port area, camshaft seat duration and net valve lift for the indicated VE% at the indicated peak HP RPM.

**PARAMETER RELATIONSHIPS AND HOW THEY AFFECT RELATED VALUES **

Bore has a squared relationship to Net Valve Lift. *So, increasing the Bore by 10% will require a 21% increase in the Net Valve Lift*

Bore has a squared relationship to Required Intake Valve Area*Increasing the Bore by 10% will require a 21% increase in the Req Intake Valve Area*

Stroke has a direct relationship to Required Intake Valve Area*Increasing the Stroke by 10% will require a 10% increase in the Req Intake Valve Area*

Stroke has a direct relationship to Net Intake Valve Lift*Increasing the Stroke by 10% will require a 10% increase in the Net Valve Lift*

Stroke has a square root relationship to Seat Duration*Increasing the Stroke by 10% will require a 4.88% increase in the Seat Duration*

Port Flow CFM has an inverse, square root relationship to Net Valve Lift*Increasing the Port CFM by 10% will allow a 4.88% decrease in the Net Valve Lift*

VE% has a direct relationship to Net Intake Valve Lift*So, increasing the VE% by 10% would require a 10% increase in the Net Valve Lift*

Mean Port Velocity has an inverse, square root relationship to Seat Duration*Increasing the Mean Port Velocity by 10% will dictate a 4.88% decrease in the Seat Duration*

Mean Port Velocity has an inverse, square root relationship to Net Intake Valve Lift*Increasing Mean Port Velocity by 10% will dictate a 4.88% decrease in the Net Intake Valve Lift*

Mean Piston Velocity has a square root relationship to Seat Duration*Increasing the Mean Piston Velocity by 10% will dictate a 4.88% increase in the Seat Duration*

Mean Piston Velocity has a direct relationship to Net Intake Valve Lift*Increasing Mean Piston Velocity by 10% will dictate a 10% increase in the Net Intake Valve Lift*

**Great spirits have always encountered violent opposition from mediocre minds - Albert Einstein**

Camshaft Design & Profile Generation Software

**Controlled Induction**

**ENGINE MODELING & CAMSHAFT DESIGN SOFTWARE**

*C I S from DJRC 3691 S Country Club Rd Tucson, AZ 85713 928-444-0044 email:valvemotion@gmail.com*