Operation Section
1
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22
SCV: Suction Control Valve
• A solenoid type valve has been adopted. The ECU controls the duration of the current applied to the SCV in order to
control the quantity of fuel drawn into the pumping mechanism. Because only the quantity of fuel required to achieve
the target rail pressure is drawn in, the actuating load of the supply pump decreases, thus improving fuel economy.
SCV ON
- When current is applied to the coil, it pulls the needle valve upward, allowing fuel to be drawn into the pumping
mechanism of the supply pump.
SCV OFF
- When current is no longer applied to the coil, the needle valve closes and stops the suction of fuel.
Needle Valve
Spring
Stopper
Coil
Q000823E
To Pump Pumping Mechanism
From Feed Pump
Q000824E
From Feed Pump
Q000825E
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