cover feature
Distributor injection pump versions:
A distinction is made between these pumps according to the type of quantity control used, their high pressure generation and regulation,
as shown in the diagram:
Distributor pump
Quantity control
Edge controlled
Control method
Solenoid controlled
Mechanical control
Axial piston pump
High pressure generation
Short code
Electronic controlled (EDC)
VE..F
Radial piston pump
VE..EDC
VE..MV
VR
(VP15. VP37)
(VP29/30)
VP44
Nozzle-and-holder assemblies
The nozzle-and-holder assembly is required for injection of
fuel into the diesel engine’s combustion chamber. It has a
major influence on mixture formation and combustion and
therefore contributes to optimisation of engine power as well
as exhaust gas and noise development.
Bosch offers various types of nozzle-and-holder assembly
that are suitable for all conventional systems and engine
types – from single-cylinder engines to car and truck engines.
Nozzles
Technical features
•
| words in action
Bosch Diesel
The injected fuel quantity varies between 1 mm³ and
350 mm³ (this quantity is forced through a 0.25 mm²
opening at 2,000 km/h).
•
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The fuel is injected into the combustion chamber with a
pressure of up to 2,000 bar.
•
The range of Bosch nozzles is diverse and covers
all conventional applications. It is based on the
unrivaled, extensive expertise of Bosch as a vital
partner for international vehicle manufacturers.
The clearance of moving parts stands at 0.002 mm.
•
Nozzles are used to atomise the fuel with precision and
to distribute it in the combustion chamber so that optimal
combustion can occur. At the same time, the nozzle reliably
seals off the fuel system from the combustion chamber.
Fuel injection is much faster than the blink of an eye.
may 2014