AIR DENSITY METER FOR ENGINE TUNING
Standard engineering charts
readily show the effect of air temperature and barometric pressure on
engine power output. The maximum power output of an engine is directly
related to "air density", provided the same fuel/air ratio is
maintained. If the fuel/air ratio is permitted to go rich or lean, the
reduction in power output is considerable greater. In addition, the
ignition timing will be fast or slow and the spark plug heat range will
be affected. To maintain a balance of these conditions and secure
maximum power output at a given "air density" the correct fuel/air ratio
must be maintained. The Air Density Gauge combines the factors of air temperature and barometric pressure and gives a direct reading in percent air density.
