International VT 275 V6, Руководство пользователя

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Spool Valve
• The open and close coils move the spool
valve from side to side using magnetic force.
• The spool valve has two positions. When
the valve is in the open position, oil flows
from the high pressure oil rail into the
injector. When the valve is in the closed
position, oil drains from the injector back to
the crankcase.
INJECTOR OPERATION
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International ® VT 275 V6 Engine
Barrel & Plunger
• The barrel and plunger of the injector is
where high fuel pressure is generated by
the movement of the plunger.
• Plunger coating reduces the possibility of
scuffing and poor performance.
Nozzle
• The nozzle needle opens when fuel
pressure, pushing on the bevel of the
needle, is greater than the spring pressure
holding the needle closed. At that point,
the needle lifts and fuel under high
pressure passes through the nozzle holes.
Intensifier Piston
• Since the intensifier piston is approximately
seven times greater in surface area than
the plunger, the fuel pressure under the
plunger is approximately seven times
greater than the injection control pressure.
O OIILL IIN NLLEETT FFR RO OM M R RAAIILL O OIILL IIN NLLEETT FFR RO OM M R RAAIILL
C CO OIILL C CO OIILL
S SP PO OO OLL
S SP PO OO OLL
IIN NTTEEN NS SIIFFIIEER R
IIN NTTEEN NS SIIFFIIEER R
P PIIS STTO ON N
P PIIS STTO ON N
P PLLU UN NG GEER R
P PLLU UN NG GEER R
B BAAR RR REELL B BAAR RR REELL
FFU UEELL IIN NLLEETT
FFU UEELL IIN NLLEETT
N NEEEED DLLEE
N NEEEED DLLEE
C CO OIILL
C CO OIILL
N NO OZZZZLLEE
N NO OZZZZLLEE
N NO OZZZZLLEE H HO OLLEES S
N NO OZZZZLLEE H HO OLLEES S