The path to the CO2-neutral mobility of the future is increasingly shaking up markets worldwide and accelerating change in the automotive and engine industry. At the IAA Transportation in Hanover, the company will be demonstrating how innovative products from Hengst help to reduce environmental and air pollution, among other things.

Electrified cabin air filter Blue.ion

The innovative Blue.ion. cabin air filter achieves its filtering effect through a combination of ionization of the particles in the airflow and polarization of the Filter medium. The ionizer ensures that the particles are electrostatically charged. This makes them easier to filtrate in the filter, which is also charged. However, ionization alone would reduce the charge in the filter over time and lead to reduced particle separation. At this point, polarization has a complementary effect. By building up an electrostatic field, the charge in the Filter medium is permanently maintained, ensuring consistently high filtration over the entire service life. The Blue.ion from Hengst offers maximum protection against pollutants, viruses and allergens and makes a significant contribution to a healthy and hygienic interior climate in the vehicle. Nevertheless, it has a compact design, requires little energy for the fan and produces only low noise emissions.

Solutions for alternative fuels (e-fuels, FAME, HVO)

The defossilization of the transport sector, but also of off-highway and stationary applications, requires a broad mix of different drive and fuel concepts. Depending on the area of application, electric drives with batteries and/or fuel cells as well as combustion engines with synthetic fuels such as e-fuels and hydrogen or with biofuels such as hydrogenated vegetable oils (HVO) or fatty acid methyl esters (FAME) are used.

Hengst is further developing the Fuel filter concepts so that they can also be used with alternative fuels. The Blue.maxx fuel filter system, for example, is suitable for all current and future fuels used worldwide. It has a modular design and can therefore be quickly and easily adapted to various applications as an original equipment or retrofit solution. Depending on the filtration, fineness and fuel requirements, various single or multi-layer elements of the Energetic fuel filter insert are available. The Blue.maxx system can be designed in two parts as a pre-filter and main filter or as a combined main filter with integrated Water separator.

Filter systems for hydrogen engines and fuel cells

For combustion engines that run on hydrogen, a potentially increased accumulation of water in the engine oil and the high flammability of hydrogen must be taken into account. If water ingress into the engine oil is to be expected, Hengst offers specially designed fully synthetic Filter Elementsand sealing materials. Oil filter modules from Hengst can be flexibly configured and cover the specific requirements of hydrogen as well as other alternative fuels such as FAME or HVO. In hydrogen engines, blow-by gases that enter the crankcase via the cylinders can form an explosive mixture. An innovative active ventilation system from Hengst minimizes the hydrogen concentration in the crankcase and effectively counteracts the risk of ignition. Hengst has developed the system as part of an overall filter concept for hydrogen engines, which also consists of the electrically driven disk separator Blue.tron.

In fuel cells, ions are introduced into the Coolant during operation due to ageing. Effective filtration is therefore required to ensure safe operation. The innovative Ion exchanger Blue.iox from Hengst offers a particularly high level of protection with minimal maintenance. The unique design of the filter cartridge with axial filter flow and the special mixed-bed resin system for cation and anion exchange ensure high filtration efficiency over the entire service interval.

The intake air of a fuel cell must be cleaned very effectively of particles and substances such as nitrogen oxides, ammonia and sulphur oxide in order to achieve a long service life and high performance. A modular Blue.netic Cathode air filter system from Hengst with a multi-layer structure protects the components of the fuel cell. In addition to products for Coolant and air filtration, Hengst also develops solutions for system integration directly on the fuel cell stack. One example of this is a Water separator for anode gas recirculation, which is characterized by an innovative valve configuration of the purge and drain valve.

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