Engine Trends Window (Ctrl-Shift-E)

 - View/Chart Trends – This buttons opens the Trends dialog box and allows you to select any combination of data channels to display in the Trend Chart. This chart presents data from all flights in a given profile. You can select max fuel flow for example and see what the max fuel flow was for every flight.

The Trends window is a powerful tool to allow you to dig in and analyze your engine monitor data, across all of your flights. It also acts as a Navigation tool and allows you to move from the Trends Window, directly to a specific flight by RIGHT Clicking any point on the Trends Window Graph. For example, if you notice an anomaly in the Trends window, you can Right+Click your mouse on the graph line (data channel) and a pop-up menu will be displayed with the information for the specific flight that contains the anomaly. If you Click the pop-up window, that specific flight will be opened in EGView allowing you to view and analyze the flight in detail.

By default, the Trends window will display Maximum, and Average values for the selected items which are installed in your Engine Monitor. BMEP, Torque, HP (Calc), are all calculated for you if you have Manifold Press., RPM and Fuel Flow. ‘CHT Dif.’ And ‘EGT Dif.’ are calculated for all engine monitors.

EGView calculates and stores Maximum and Average values for all installed items when you import the flight data files. This makes retrieving the values in the Trends window very quick. When you change ‘Min. EGT Temp.’ and ‘Min. CHT Temp.’, EGView must recalculate the Averages, and this takes a few seconds, depending on how many flights you have stored in the database.

Min. EGT Temp. – By default this is set to 0. If you wish to see the Average EGT for all cylinders, where all cylinders are above a certain temperature, set that temperature here. For example: Set Min. EGT Temp = 1300 to see the Average EGTs when ALL EGTs are above 1300. This is a good way to look at your average temperatures during Cruise, because it removes the startup and shutdown, low-power, phases of flight.

Min. CHT Temp. – By default this is also set to 0. If you wish to see the Average CHT for all cylinders, where all cylinders are above 300 degrees, set the Min. CHT. Temp to 300. Min. CHT Temp. is also used for the average calculations for all other values (other than EGT). Therefore, if you want to see your average Oil Temperature for when all cylinders are above 275 degrees, set Min. CHT Temp to 275.

Min. Duration – By default Min. Duration is set to .2hrs and therefore excludes flights that are shorter than .2 hours from the Trends calculations. If you want to see the trends of flights that are longer than 2 hours, set Min. Duration = 2.0.

EXAMPLE: In order to see Average Fuel Flow, Oil Temp. and CHTs during the cruise phase of flight, where the flight was longer than 1 hour and all CHTS were hotter than 350 degrees, set the following:

Min. CHT Temp = 350

Min. Duration = 1.0

Select CHTs, Ave; FF, Ave and Oil Temp, Ave.