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Pressure regulator - Z 13 DT DOHC diesel
engine
On the Z 13 DT engine the pressure regulating valve is bolted
into the pressure accumulator on the transmission side.
The pressure regulating valve has the task of regulating and
maintaining a system pressure of 1400 bar in the pressure
accumulator.
The pressure regulating valve has two
control circuits:
- a slower electrical control circuit for setting a variable mean
pressure in the pressure accumulator
- a faster mechanical/hydraulic control circuit which compensates
for high-frequency pressure pulsations.
| 1. |
Pressure regulating valve |
| 2. |
Pressure accumulator (rail) |
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Cross sectional diagram of the pressure regulating
valve
| 1. |
Seal ring - separates the high-pressure section
from the low-pressure section |
| 2. |
Fuel return duct to the tank |
| 3. |
Electrical connection |
| 4. |
Seal ring |
| 5. |
Fuel return duct from the high-pressure pump |
| 6. |
Overflow cylinder |
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