Technologies · Systems · Solutions - Dürr

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Glossary
A Direct electrostatic charging
Application technology
General term for all products related to the
spray application of paint and high-viscosity
materials. Important products that fall under
the heading of “application technology” include
painting robots, paint atomizers, paint
supply systems, and color change systems.
Asynchronous machine
A driving and loading device used in engine
and transmission test stands.
Body pretreatment
Pretreatment is the first step in the painting
process. The vehicle body is cleaned and a
protective coating is applied that prevents
corrosion and allows for better paint adhesion.
Common products strategy
(also called common tooling strategy)
Strategy pursued by automobile manufacturers,
in which identical production technology
is used in multiple plants, making it easier
to achieve a consistent standard of quality.
Common-rail fuel injection
Fuel injection systems for combustion
engines. Whereas conventional systems must
pressurize the fuel for each individual injection,
the pressure in common-rail fuel injection
systems remains constant. This makes
extremely flexible injection control possible.
The system uses a common rail for fuel and
for accumulating injection pressure.
Computational Fluid Dynamics
(CFD) simulation
Computer simulation of flows, such as air,
water, or paint flows.
Control frequency
In test stand technology: the frequency with
which a control unit “tells” the individual
drives and loading devices assigned to it how
many revolutions per minute (rpm) or how
much torque the machine must achieve.
Coolant recycling (filtration)
Coolants are used in workpiece machining,
for instance, for boring and milling. They cool
the workpieces and tools, reduce friction and
wear, and bind any metal shavings. The recycling
systems cool the used coolant and
remove the shavings through filtration so
the coolant can be reused in the machining
process.
Deburring
The process of removing from workpieces
any burrs that are produced during boring or
milling, for example, in the manufacture of
engines and transmissions. If these burrs are
not removed, they could break off later and
cause damage to or even the failure of the
system.
Dip-painting
Process used for priming the vehicle body.
In dip-painting, the body is completely submerged
in the paint. The liquid paint adheres
to the entire body surface as well as the cavities.
After dipping, the paint is dried and
cured as in other painting processes.
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of water-based paints
High voltage is applied to the paint atomizer
to give the paint droplets an electrostatic
charge. The result is more effective paint application
to the earthed vehicle body, minimal
paint loss, and minimal soiling of the atomizer.
Eddy current brake
The primary components of an eddy current
brake are a cylindrical or disc-shaped rotor
and a coil. When current flows through the
coil, it generates a magnetic field, which creates
a braking effect. The stronger the coil's
magnetic field, the stronger the braking effect.
Eddy current brakes are used, for example,
as a loading device for engine testing.
End of line
The area in the process of vehicle final assembly
where fully assembled vehicles are tuned,
tested, and prepared for shipping.
Filling systems
Systems dispensing materials essential for
automobile operation (fuel, brake fluid, engine
oil and coolant, transmission oil or fluid, airconditioning
refrigerant, windshield washer
fluid, power steering fluid, and air for air
suspension systems) in the final assembly
stage of production.
Fleet management
Management of transport equipment fleets
(forklifts, lift trucks, etc.), includes, for example,
leasing and management of spare parts.
High-viscosity materials
Sprayable materials, often containing PVC,
that are applied to car bodies to seal weld
seams, to preserve cavaties, or as underbody
protection. Adhesives and liquid insulation
materials also fall under this general term.
Marriage
Joining and bolting together of power train,
chassis, and body in vehicle final assembly.
Paint atomizers
Paint atomizers ensure that paint is applied
in an even spray stream. High-rotation
atomizers reduce the paint to a fine spray
mechanically and generate a bell-shaped
spray stream. Air atomizers generate an ovalshaped
spray stream. Electrostatic attraction
is used to ensure a high degree of application
efficiency (paint utilization).
Piezo technology
A new fuel injection technology for diesel
engines. Instead of the conventional solenoid
valves, piezo actuators are used to open and
close the fuel injection nozzles. The piezo
actuator consists of several crystal layers that
expand when voltage is applied and thus
close the valve opening.
Platform strategy
A modular approach using base products that
make it possible to cost-effectively create different
product variations and series.
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Powder painting
Instead of wet paint, this process applies
paint powder using spray guns or high-rotation
atomizers. The paint is then baked on
(i.e. melted and cross-linked) in an oven. The
advantages of powder painting are a solventfree
process and lower energy consumption.
In addition, it is possible to achieve almost
100% utilization of powder paint.
Supervisory control systems
Centralized computer system for controlling
and supervising control of a complete production
plant.
System integration
On behalf of a customer, a system integrator
combines multiple products, which may
come from various manufacturers, into a
turnkey complete system.
Systems business
Realization of complete lines that comprise
multiple individual products or equipment.
Examples include paint shops and final
assembly lines. Systems business (complete
plant or line business) is characterized by
high order values and handling times that
sometimes extend over several years.
Test systems
Dürr supplies testing systems for two stages
in the automobile value chain:
Vehicle development: functions and
features of future car models and components
are tested, for example fuel
consumption, exhaust emission, wind
resistance, and braking effectiveness.
Prototypes are usually used for the tests.
End of line: functions of fully assembled
vehicles are tested, for example headlights
and ABS.
Weld seam sealing/seam sealing
A vehicle body consists of various parts that
are welded together. The weld seams are
sealed with PVC materials to prevent water
from entering.