Long rods and cylinder filling in a naturally aspirated setup.....
My understanding of the benfit of a long rod is the increased, effective piston dwell time at TDC and BDC (the benfit being had at TDC). With the piston staying at or near TDC longer combustion pressure builds higher and results in more force being exerted on the power stroke.
But my question deals with the filling of the cylinder with the air/fuel charge. Does the long rod cause an increase in piston velocity (vs a standard rod configuration) as the piston pulls the a/f charge into the cylinder which would result in the cylinder filling more completely?
Or more simply does the long rod increase the cylinder filling efficency?
My understanding of the benfit of a long rod is the increased, effective piston dwell time at TDC and BDC (the benfit being had at TDC). With the piston staying at or near TDC longer combustion pressure builds higher and results in more force being exerted on the power stroke.
But my question deals with the filling of the cylinder with the air/fuel charge. Does the long rod cause an increase in piston velocity (vs a standard rod configuration) as the piston pulls the a/f charge into the cylinder which would result in the cylinder filling more completely?
Or more simply does the long rod increase the cylinder filling efficency?