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Power Hybrid from HAMM

As environmental protection becomes a more important issue, reducing fuel consumption and CO₂ emissions has also become increasingly relevant. These objectives have also long been present in the construction machinery industry. When it comes to compaction technology, HAMM offers an intelligent overall concept with the Power Hybrid drive, which provides the usual compaction power and, thanks to reduced fuel consumption, reduces operational CO₂ emissions.

The Power Hybrid concept at a glance:

HAMM currently offers the hybrid drive for the 9 t HD+ 90i PH tandem roller (EPA Tier 4/EU Stage V) in a range of variants (VV, VV-S, VO, VO-S, VT, VT-S). For these models, HAMM combines a classic combustion engine with a hydraulic accumulator. While the diesel unit provides the basic load, the hydraulic accumulator is able to cover peak loads, such as start-up or activating vibration/oscillation, by providing an additional 20 kW of power at short notice. After this maximal load has been generated, the hydraulic accumulator is recharged via a pump. Since the maximum load is generally only required for a few seconds, sufficient recharge time is available. Additionally, the diesel engine’s workload is reduced by an electric fan drive with optimum efficiency and an efficient start-stop system. This means that an engine that provides 55.4 kW of power is sufficient in the HD+ 90i PH instead of the 85 kW unit in the standard HD+ 90i model.

The advantages of Power Hybrid:

Functions and operation identical to standard machines
No additional maintenance required
Lower noise emissions thanks to engine power adjustment
Simplified exhaust gas after-treatment (no SCR catalytic converter, no Adblue)
Potential for reducing operational CO₂ emissions compared with selected conventional models
Cost-effective package solution: Fuel consumption reduced by up to 15% (in application-specific use) whilst maintaining comparable compaction power

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