Air breather ProVent² 500

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Overview
MANN+HUMMEL ProVent² 500 is a crankcase ventilation (CCV) system with integrated oil separation, engineered for high blow-by flows in large, high-speed turbocharged diesel engines. Its modular platform and flexible configuration enable adaptation to various engine layouts and installation constraints.

Product benefits

• Modular architecture allows multiple basic modules to be combined in one installation
• Extended service intervals versus comparable systems
• MICROGADE D-G filter media ensures high separation efficiency (>90%) for small droplet distributions

High performance details

• Basic module with dedicated channels for dirty gas, clean gas and oil return
• Inside-out coalescer mounted on the basic module for efficient aerosol separation
• Separated oil returns to the engine oil sump through dedicated oil return channels
• Platform strategy: basic module + separation & control module; multiple basic modules can be mounted in series to achieve required flow
• Large-engine housing variant in die-cast aluminum to cover different power classes and load profiles
• Key components (illustrated): 1 Oil separator; 2 Bypass valve; 3 Oil return; 4 Dirty gas inlet; 5 Clean gas outlet; 6 Pressure control valve

Technical features
Applications: Turbocharged diesel engines
Engine Power Range: > 1200 kW
Blow-by capacity: < 500 l/min
Service life: > 2,000 h
Separation efficiency @ d50 = 0.6 µm (mass weighted): > 90%
Separation efficiency @ d50 = 1.5 µm (mass weighted): > 99%
Operating temperature: -40 °C to +120 °C (peak 150 °C)

Specifications

• Model: ProVent² 500
• Applications: turbocharged diesel engines, large/high-speed diesel engines
• Engine power class coverage: from approx. 1,200 kW and higher (example variant described for ~2,500 kW)
• Blow-by handling capacity: < 500 l/min (per module specification)
• Service life: > 2,000 h
• Separation efficiency: > 90% @ d50 = 0.6 µm (mass weighted); > 99% @ d50 = 1.5 µm (mass weighted)
• Operating temperature range: -40 °C to +120 °C (peak 150 °C)
• Modular architecture: basic module + separation & control module; multiple basic modules can be combined to meet required volume flow and power classes
• Filter media: MICROGADE D-G (high efficiency for small droplet sizes)
• Material note: large-engine variant uses die-cast aluminum housing
• Functional elements: oil separator, bypass valve, oil return channel, dirty gas inlet, clean gas outlet, pressure control valve