Water Injection Systems

The power of water

Water can do amazing things in high performance engines. Like our special water injection technology, for example, which noticeably reduces fuel consumption in gasoline engines. This means not only lower costs, but also lower CO₂ emissions. What's more, the cooling effect of water in the combustion chamber enables us to achieve more power and torque - water-based driving pleasure, so to speak.

Using expertise

As experts in SCR tank systems for diesel engines, we know exactly what is important when it comes to tank architecture, interfaces and customer needs. In addition, our solutions master the special challenges of water injection systems. This is how we get liquid handling in dynamic conditions, a higher heating capacity and the formation of biofilm under control.

Development in flow

Our water injection systems are designed as complete solutions that meet all the requirements of a modern additive tank system. Our experts are constantly working on improvements in terms of freezing behaviour, usable liquid volume and minimisation of sloshing noises.

The most important highlights

With us, engineering, toolmaking, equipment and processes for mass production come from one source. Thanks to our dense network of locations, we are almost always in the direct vicinity of our customers all over the world.

• Lightweight tank with integrated functions
• Various tank heating concepts - electric and hydraulic
• Optimized filling systems
• Integrated passive bio-decontamination function
• Specific design for dynamic driving condition
• Noise-optimized design
• Decades of experience in the development and production of liquid tanks
   

Your customer benefit through our Water Injection Systems

Injection moulded tank

• Lightweight
• High usable liquid volume
• Low deformation by ice expansion during freezing
• Integrated structural parts and brackets
• High geometric precision
• Low noise level (sloshing noise reduction)

Bio-decontamination

• Integrated in the tank shell
• No additives necessary in the liquid
• No wash-out and therefore lifetime durability
• No release of ions or biocides
• No energy source required

Tank heating

• Various heating technologies (electric and hydraulic)
• Already validated solutions
• High amount of melted liquid vs. low power absorption
• Sustainable thawing also at tilted conditions, low filling level and working day cycle driving.
• Quick dosing readiness after cold start
• Adapts to anti-sloshing baffles inside the tank

Filling system

• Works with any refill device, up to 40 l/min.
• Compact, weight and space saving
• Individual and validated solutions, even for critical routings and packaging.

Dynamic driving

• Dynamic fluid barrier
• Ensure availability of liquid at suction point even in dynamic driving conditions
• Ensure liquid transfer between heater and suction point during defreezing

Full Service from Röchling

• Development and validation of the entire system
• Complete service including CAD/CAE, test laboratory, tool and equipment construction, set-up of small series and mass production processes.
• Over 50 years of experience in the development and production of liquid tanks