 |
 |
 |
 |
|
 |
 |
http://www.ultralightnews.ca/ Page 13 of 36
The Ultralight News - your one stop Ultralight News.
13.Synchronisation of the throttle control
Open the throttle a short way and take care the space between the throttle and the throttle body is the
same width at both throttle bodies. Use a round object for that. Fix the throttle in a position where the
round object has the same diameter than the width of the crack. Check for the same distance on the
opposite throttle body. Adjust accordingly. When the throttle is set to the idle position, both throttle
adjustment screws must contact the throttle stop. Allow only a small amount of play in the throttle cable.
14.Function testing:
Turn on the fuel injection system (without starting the engine). In doing so the fuel pump must run 3-8
seconds. Open the throttle valves completely. By doing so you must clearly hear a rattling noise from the
injector valves for approximately 1 second in duration.
15.After repeated openings and closing of the throttle you will need to check the gasket of the fuel hydraulic
while the system is turned on.
2.5Additional Steps For A More Effective Engine Operation:
1.Ram Air Box
When operating in tractor configuration, you can use the airstreams and the developing back
pressure in a ram air box to ?charge? the engine. To avoid unnecessary leanness of the air/fuel
mixture, you must have a hose connection from the computer barometric pressure sensor to the ram
air box so the computer can compensate for the increase in air pressure.
2.Manual fuel enrichment (accessory)
Allows manual increase of fuel to normal program parameters. This would be used to enrich the fuel
mixture to cool the engine in special applications only. In normal engine operations this accessory is
not used.
3.Computer interface and RS232 interface hardware.
With the software you can monitor the sensors and the return signal of the injection system. Beyond
that you can download new programs to the control unit. These updates are available through
authorised Hirth distributors or Gobler-Hirthmotoren via the Internet. With that, you will always
have the newest software update.
2.6The engine?s air supply
The engine must be installed so the cooling air stream fed to the engine is sufficient to ensure the engine is
cooled and that air is also supplied to the carburettors.
With an enclosed installation it is important that the hot outlet air stream is not fed to the carburettors, as this
leads to a drastic reduction in performance. It is also important to ensure that the hot outlet airstream can
escape with out hindrance from the metal cladding, since this leads to overheating of the engine and also
damage.
The ducted cooling system fixed to the motor is designed so that adequate supply of fresh air for cooling of
the engine is sufficient. Changes to the cooling system therefore are not recommended. It is essential to
ensure that a sufficient supply of air is provided at all times during operation.
It is recommended that the cylinder head temperatures, the exhaust gas temperature and the fuel pressure be
monitored.
The basic setting of the engine guarantees a problem free-engine function under the general installation
conditions. It is very important for safe running of the engine that the cylinder head, exhaust gas temperature
and the fuel pressure are monitored.
|
|
