A device that computes the mechanical advantage provided by a pivoting lever used in internal combustion engines. This lever transmits motion from the camshaft to the valve, effectively multiplying the valve lift relative to the cam lobe lift. The resulting output is a numerical value representing this amplification, typically expressed as a ratio. For instance, a value of 1.5 indicates the valve opens one and a half times further than the cam lobe travels.
This calculation is a crucial step in engine design and modification because it directly impacts engine performance. By altering this value, engineers can influence valve timing and lift, which subsequently affects airflow and combustion characteristics. Historically, experimentation and empirical testing were required to optimize these parameters. The availability of methods to automate these calculations has streamlined the development process, allowing for more precise and efficient engine tuning. Achieving optimal settings is critical for maximizing power output, improving fuel efficiency, and controlling emissions.
