I'm trying to work out the most efficient rate of acceleration and need to know my stroke length in inches (or centimeters and I'll convert it) for the calculation below (post from ecomodders web site...).
I have a 52 plate 1.8 LS, can anyone tell me???
"I have read that BMW instructs drivers to accelerate at 75% engine load and shift when the engine's mean piston speed reaches 1200-1500 feet per minute. Mean piston speed is a function of engine stroke and RPM.
Vp= mean piston speed
RPM= engine speed
S= engine stroke length, inches
This keeps you in closed-loop operation (for EFI) at high volumetric efficiency with low frictional horsepower loss for as short a time as possible before you can achieve steady-state cruise and/or EOC. It is what I like to say is accelerating "smartly.""