A system for determining a quality of natural gas includes a fuel line (42) for communicating natural gas to an engine (22). An infrared light source (54) is disposed along the fuel line (42) and is configured to emit a beam (50) of infrared light into the...

An altitude fuel limiter and method for controlling an engine using the same is provided. The altitude fuel limiter includes a torque screw sleeve extending from an inboard end to an outboard end. The torque screw sleeve has an interior surface defining a ...