Crankcase Ventilation

Crankcase Ventilation

Maximum performance and durability.

Crankcase Ventilation systems are indispensable for running engines cleanly and efficiently. They ensure that blow-by gases, which are unavoidably produced during the compression process of the fuel/oxygen mixture in the engine, are separated. The oil mist-laden blow-by gases are no longer released into the environment without being cleaned. The separated oil is fed back into the oil circuit and the combustion gases (Crankcase Ventilation) into the intake tract.

In the so-called "impactor variant", the oil in the blow-by gases is filtrated via a fleece and discharged back into the crankcase. The cleaned gases are fed into the intake tract. This protects engine components such as the intercooler or turbocharger. Oil consumption is reduced and combustion is improved.

Origin of blow-by gases

Blow-by gases are produced in combustion engines when gases escape through the piston rings into the crankcase area of the engine during the fuel combustion process. The gases consist of unburned fuel, water, nitrogen oxides and hydrocarbons. Causes can be


Crankcase Ventilation – Your customer benefits at a glance:

Crankcase Ventilation - Your customer benefits at a glance:
  • Compared to other suppliers of Crankcase Ventilation systems, we also have the expertise to manufacture Crankcase Ventilation systems

  • Patents for the Electrically driven disk separator Blue.tron

  • Established brand in the aftermarket

  • Product range covers the majority of relevant European Passenger cars and commercial vehicle models and is constantly being expanded

  • High delivery performance for all products


Further products

This might also interest you:
Electrically driven disk separator Blue.tron
Electrically driven disk separator Blue.tron
Passive oil mist separator
Passive oil mist separator

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Hengst SE
Nienkamp 55-85
48147 Münster
© 2024 Hengst SE

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purifying our planet

Our corporate vision

We make the planet cleaner with our products. We also make the journey there as clean as possible.


We develop the filtration solutions of the future. For our customers and for society.


Our focus is on energy efficiency. This helps the environment and saves costs.