Dynon Avionics SkyView Pilots Users Guide - Manual (Page 75)

EMS Operation
SkyView Pilot’s User Guide - Revision S 5-5
Figure 69–Lean of Peak
To exit the Lean mode, press LEAN again; the EGT/CHT display then returns to its normal state.
For best results, lean carefully by making small adjustments and allowing some time for
temperatures to stabilize before leaning further. In addition to the EGT temperatures, you can
also watch the fuel flow rate and CHT temperatures. Carefully read and follow your engine
manufacturer’s leaning recommendations for best performance.
On some engines, when given the proper set of inputs, the EMS can also calculate lean-of-peak
or rich-of-peak operation in real time. To do this, the EMS needs access to OAT, MAP, RPM,
Altitude and fuel flow, engine horsepower setting, engine redline setting, and be used on a
normally aspirated Lycoming or Continental engines. This information is based on Lycoming and
Continental power charts and is updated in real time. The leaning information has four states:
LOP, ROP, and PK (Peak), and PK? (Peak Unknown). This information can be used to determine
when it is safe to lean the engine, and if the current operating state is near peak or not. While
this information is based on published charts, you should independently verify via manual
leaning that this data matches your install and engine. If the EMS does not have all of the
information it needs to calculate the peak state, PK? (Peak Unknown) is shown.
FUEL
The FUEL menu primarily contains controls for adjusting the fuel computer. See the dedicated
Fuel Computer section for details on fuel computer operation.
CLR TMR
Press CLR TMR to reset both the Engine Trip Timer and the Flight Trip Timer to 0 hours. See the
Timers section for more information on timer functions.
Timers
SkyView has internal tach, Hobbs, and other timers that each run at different times. EMS timers
are available for placement on the Engine Pages via the Screen Layout Editor. For more
information regarding the Screen Layout Editor, reference the SkyView System Installation
Guide.
Engine timers are displayed at 1/10 hour increments.