All around the world, new emission standards are imposing rigorous requirements on engine development. Low-emission gasoline and diesel engines with modern combustion technology make excellent oil separation values a necessity for the crankcase ventilation. Consequently, the technological trend is towards active ventilation. The electrically-driven Blue.tron disk separator is currently the most advanced crankcase ventilation device. It offers high-efficiency oil separation and active blow-by conveyance for crankcase ventilation. Reduction of the oil input in the engine intake system enables higher charge air pressure level, which can be utilized to boost engine performance and efficiency.
According to EU-legislation the crankcase pressure shall be below ambient pressure to inhibit exhaust gases leaving the engine’s interior. To fulfill this demand a crankcase ventilation system is preferable that does not throttle the flow off the crankcase into the intake system of the engine and the Hengst Blue.tron even supports this flow. So legal compliance is guaranteed and along with it the engine’s oil return from turbocharger, valve stem seals and the oil separator itself is enhanced.
Fine oil aerosols occurring in high performance combustion engines can have multiple negative impacts. The best-known effect is compressor coking of Diesel engine turbochargers leading to loss of engine power and increased fuel consumption. Another negative effect is the low-speed pre-ignition phenomena which can be an oil aerosol induced effect leading to severe engine damages. Hengst Blue.tron separates those fine oil droplets to the highest extent and ensures durable high performance engine operation.
The electric drive of the Hengst Blue.tron is designed to gain maximum performance, control, efficiency and installation flexibility. The rotational speed possible with the electric drive is 50% higher compared to a hydraulic drive. The rotational speed of the disk separator is easily controllable to adapt to different engine operation points and utilize least electric power. And the Blue.tron system can be placed freely in the engine bay omitting large hoses and cross sections for oil supply and return as they are required for hydraulic drive systems.
Electrically driven disk separator Blue.tron – Your customer benefit at a glance:
High engine efficiency, low emission level and emission stability throughout the complete product life.
High efficiency aerosol particle separation up to 95% @ 0,3 µm safeguarding the intake system from deposits, the engine from irregular combustion and the environment from pollution.
Active blowby flow leading to sub ambient crank case pressures gives you legal compliance, proper turbo charger oil return and ability for 24/7 engine operation.
ECU interface using LIN bus enables onboard diagnosis (OBD) and disk separator speed control for adaptation of cleaning efficiency, crank case pressure and energy consumption.
Easy installation for existing and new engines due to electric drive, large flexibility of design and connections and ambient pressure referenced regulation valve preinstalled. No engine hardware or software adaptation necessary.
Fit for future combustion processes with the use of low-carb fuels, water injection, EGR utilization and Miller cycles require adapted crank case ventilation systems.
Blue.tron – active crankcase ventilation for the 4-cylinder gasoline engines from VW
The electrically driven disc separator enables the highest separation rates for liquid components in the blowby. At the same time, active blowby conveying ensures compliance with the approval conditions with regard to crankcase pressure. The compact module is bolted directly to the engine block.
Blue.tron modular system
Hengst Filtration offers basic sizes as well as customized disc separator sizes.