Pierburg production portfolio

Pierburg focuses on innovative solutions to support systems for diesel and petrol engines. The products are intended mainly for sub-systems focused on reduction of emissions and air intake management. Pierburg is sought after by customers as a supplier of the technical design of engine innovations, especially in combination with new emission limits and new engine efficiency requirements.


FTIV (Fuel Tank Isolation Valve)

  • The FTIV is a normally closed valve, which can be electrically opened on demand by the control unit of the vehicle.
  • It is equipped with mechanical bypass function, to balance the pressure inside the vehicle fuel tank in case of over-pressure or negative pressure inside the tank.

The plastic cover

  • The plastic cover is part of various products manufactured in Ústí nad Labem such as EGR LP, actuators (EAMs) and throttle bodies.
  • One of its functions is to watertightly close the compartment area of the shaft with a magnet, a DC motor and its gears.
  • Another function is to provide the shaft position information to the control unit of the vehicle, thanks to the mounted position sensor, which is resistance welded and fixed by the casting compound.
    This information is transmitted via connector.


  • In an actuator, the rotation of a DC-motor is converted via a gear train to the required turn of the output shaft.
  • Feedback comes from the shaft turn angle sensor.
  • The design allows use of actuators in a broad range of products such as valves, dampers, etc.

Emission control systems

Throttle body

  • The throttle controls the pressure in the intake manifold depending on the necessity for intake of exhaust gases into the engine cylinders.
  • Throttle opening is controlled by an actuator based on the accelerator pedal position information from the ECU.
  • The new variants of throttle bodies follow the modern trends by using the plastic material housings.

Low-pressure EGR valve

  • It is used in turbocharged internal combustion engines in addition to high-pressure exhaust gas recirculation.
  • The exhaust gas is rerouted downstream of the turbo charger and DPF and returned upstream of the compressor and further on into the cylinders.
  • The new variants of low pressure EGR's follow the modern trends by using the plastic material housings.

AGR – Exhaust dampers

  • An exhaust damper is used to increase the pressure in the exhaust system of the motor vehicle to improve the efficiency of the EGR (exhaust gas recirculation) system.
  • The Pierburg exhaust damper ensures smooth adjustment between the “closed” and “open” positions as well as a short response time.

EGR module

  • An EGR module consists of an EGR valve, exhaust gas intercooler and optionally a bypass flap.
  • The main advantage of the combination of these components in a single unit is its low installation space requirement.
  • The bypass flap makes it possible to use an optional intercooler.
  • During a cold start, the intercooler is cut off because of quick engine and catalytic converter heating to working temperature.

Magnetic valve modules

Use of modules:

  • Variable geometry of turbocharger blades (VNT/VGT).
  • Turbocharger bypass flap (wastegate).
  • Other devices such as pneumatic EGR valves or pneumatic AGR valves, etc.
  • Depending on the type of valve used, we can use continuous (PWM signal) or stepped (on/off) pressure control and another option is underpressure or overpressure control.

SLP – secondary air pumps

  • The secondary air pump reduces the emissions of pollutants by introducing fresh air just behind the exhaust valves. This results in additional exothermic oxidation (burning) of unburnt pollutants to carbon dioxide and water.
  • The generated heat additionally heats the catalytic converter and thus reduces the time required to reach working temperature.
  • The last generation of our pump excels by an extremely quick start, low acoustic emission and minimal space requirements. The “classic” radial two-stage pump is still part of our portfolio.

Systems for utility vehicles and machines

Electric exhaust damper

  • The electric exhaust damper is used to regulate the flow of the exhaust gases. It is located downstream of the turbocharger gas outlet.
  • When the damper is closed, there is additional load on the engine (increase in counter-pressure) and hence rise in the temperature in the exhaust section.
  • At the same time, the working temperature of the catalytic converter and the diesel particulate filter is reached quickly. The damper is closed by commands from the control unit.

Production processes

Assembly (manual & automated)

  • Assembly (including electronic components)
  • Gluing of components
  • Screw-jointing (check of tightening torque and angle)
  • Pressing (check of force and path)
  • Laser marking of products
  • Programming

Surface treatment

  • Plasma cleaning
  • Plasma application of protective layers

Welding (plastics, steels, including stainless steels)

  • Laser welding
  • TIG welding
  • CMT welding
  • Friction welding of plastics
  • Laser welding of plastics

Testing operations

  • Tightness testing
  • Functional tests (e.g., testing of functionality of solenoid valves)
  • Acoustic and vibration tests
  • Optical tests