20
NOZZLE
The nozzle injects the fuel pumped under pressure by the pump into the combustion
chamber. The fuel, upon striking to the air at a high speed pulverizes into very tiny
particles, this is now capable of vaporizing and mixing with the air.
The amount of fuel sprayed in US gallon per hour at 7 bar and the spray
angles are stamped on the nozzles by the manufacturer, together with the
spray pattern indicated by a symbol (See figure 22).
SPRAY PATTERN (semi-solid cone)
SPRAY ANGLE
CAPACITY (calibrated at a pressure of 7 bar)
Figure 22
The amount of fuel sprayed from the nozzle is a function of oil pressure.
1 Tangential slots
2 Distributor
3 Valve Jacket
4 Retaning ring
5 Nozzle Body
6 Sintered Bronze Filter
(Fine mesh strainer for larger nozzles)
Figure 21
