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JETS MUNT S.L
Autorestart Function
Some JetsMunt engine models (currently VT80BL and M100XBL) include AUTO restart
function.
This function can quickly restart an engine automatically in Flight, but it should be
understood that such a system may cause damage to people and property.
By default this function is disabled in the ecu, the user should expressly enable it. By
enabling this function, the user agrees that he/she has understood the working principles and
understands its limitations.
Restart options and how to enable them
Within the “Radio” menu, a new choice has been added to define the restart operation.
The ecu offers 3 choices:
·Standard operation:
After the shutdown the ecu should be reset (power cycled) to enable
another startup cycle. Engines are supplied in this mode.
·Manual Start:
user can normally shutdown the ecu trough the transmitter (by lowering the
stick and trim). The ecu will execute the normal shutdown and post run cooling. Once the
cooling is finished (temperature below 100ºC), the ecu will return to power-up state, allowing
the engine to be restarted through the normal procedure (Trim-up, cycle stick). The time to
shut down and later start is exactly the same as standard operation. This mode is useful for
gliders, where the engine is used to climb to height, shutdown, soaring, restart, climb, etc.
This mode does not pose any safety hazard.
·Autorestart:
In particular case of a fuel bubble that momentarily stops the combustion, the
ecu will detect this condition by monitoring the rpm, temperature and pump power, the ecu
triggers the auto restart sequence. This sequence is done with the engine hot, so the power
is restored quickly. This restarting function can help save the plane in few limited
circumstances, but it can also greatly increase the risk of fire, so before to enable this
function, please read and understand the following:
What does the auto-restart function do
It automatically tries to restart the engine quickly and restore the power setting that is being
asked by the transmitter.
To trigger this function, the ecu checks:
-The radio signal is valid, no failsafe condition.
-The readings of the RPM are consistent with a flameout condition (the speed of the RPM
coasting down is between preset limits).
-The readings of the EGT are consistent with a flameout condition.
-The battery voltage is good.
-No other faults detected.
VT80BL Instruction Manual
