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Gasoline injection components | A35
2008 | 2009 Bosch Automotive Aftermarket
Fuel rail
Systems:
L, LH-Jetronic, Motronic
Purpose:
Along with the electric fuel pump, fuel filter, injectors and pressure regulator, the fuel rail forms
part of the fuel-supply system which always supplies the engine with the necessary amount
of fuel under all operating conditions. The pressure generated by the fuel pump is applied to
all injectors by way of the fuel rail. The unused fuel flows back to the fuel tank via a pressure
regulator. In most cases, the pressure regulator (fuel rail – conventional design with pressure
regulator) uses the intake-manifold pressure as a reference. The use of this typical pressure
and the flow through the fuel rail (fuel cooling) prevent the formation of any unwanted vapor
bubbles in the fuel.
Part number:
0 280 151 ..., 0 280 152 ...
High-pressure injector HDEV-1 + HDEV-5
Purpose:
The high-pressure injector (HDEV), one of the key components of a gasoline direct-injection
system, is linked by way of hydraulic connections to the fuel rail (KVS-HD) and is actuated via a
current-controlled output stage. The solenoid swirl valve injects a precisely metered quantity of
fuel with a defined spray pattern directly into the combustion chamber in finely atomized form.
The injected fuel quantity is determined by pressure, flow rate and the actuation time of the
injector. The spray geometry is matched to the requirements of the corresponding engine and
the combustion process.
Part number:
0 261 500 ...
High-pressure injector HDEV-4
System:
Motronic gasoline direct injection
Purpose:
The HDEV-4 is a high-speed piezo injector for gasoline with variable needle lift. The nozzle
opens outwards and ensures outstanding spray stability whilst at the same time being
extremely resistant to coking. The injector covers a wide metering range in which the quantity
characteristic curve is distinguished by a high degree of linearity.
The HDEV-4 can be employed for various combustion methods and injection concepts. Its rapid
and accurate multiple injection action opens up new potential for configuring the injection
process.
Part number:
0 261 500 ...