DOD SR400D Especificaciones descargar pdf (Pagina 28)

E. Working Principles:

1. The engine is essentially a hollow tube with an

intake valve and a means of supplying a

combustible mixture of fuel and air at one end

(intake), and a clear opening at the other (exhaust).

Close to the intake end is an expanded section of

the tube, which acts as a combustion chamber.

2. An air pump is used to force a mixture of fuel

(gasoline) and air into the combustion chamber.

The fuel mixture is initially ignited by a spark plug,

which is powered by an electronic ignition system.

After the initial ignition, the repeated cycles are then

sustained by a glow-coil. A series of pulse

explosions occur in the combustion chamber

resulting in a positive pressure pushing the hot

gases (1800°F) out through the exhaust tube. As

the spent fuel exits the combustion chamber a

negative pressure is formed which opens the fuel/air

valves and draws another appropriate amount of fuel

mixture into the combustion chamber.

3. The fog is generated by injecting the pesticide (oil

base only) into the exhaust tube at the proper point

where it is then broken down by the high velocity,

cyclic flow of the hot gases. At this point the

pesticide is vaporized into fine particles and ejected

out the exhaust.

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DOD SR400D Especificaciones Pagina 28