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ball valve rises. The high pressure fuel (250 ~ 400kPa) in the fuel line can pass through
the valve seat hole of the fuel injector through the orifice plate and form a conical spray to
spray into the valve body of the intake valve. When the power of the injector is cut off, the
magnetic force of the solenoid coil disappears automatically, and the ball valve of the
injector closes automatically under the action of the return spring, which stops the
injection action of the injector. The orifice plate of the fuel injector is a thin plate at the
head of the fuel injector, which is used to accurately control the fuel injection quantity and
evenly atomize.
3. Basic parameters
Working temperature range: -40℃ ~ 130℃
System fuel pressure: 350kPa
Static coil resistance: 12.5 Ώ±0.8 Ώ
Normal working voltage: 9 ~ 15V
Storage temperature: - 40 ~ 70℃
The deviation of fuel flow from
20 ℃
shall not exceed 5%
temperature.
O-ring leakage permit in the
range of -35 — -40℃
Allowable vibration acceleration
Supply voltage
Insulation resistance
Permissible leakage current
Tolerable internal fuel pressure
Tolerable torque
Tensile
force
that
can
withstood
4. Possible failures
The fuel injector is blocked;
Open circuit or short circuit of electromagnetic coil;
Fuel injector vibration failure;
Poor sealing of sealing ring.
Ignition coil
1. Outline drawing and pin definition
-40
The fuel in the O-ring area is allowed to be wet, but no dripping is allowed
6
1
be
+45
℃
400
m/s
2
16
V
M Ω
0.75
mA
1100
kPa
6
Nm
600
N
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