Liebherr APU Boosts Crane Efficiency Cuts Costs

In scorching summer heat, crane operators often face an impossible choice: endure sweltering cabin temperatures or keep massive diesel engines idling just to power air conditioning systems. This practice not only wastes significant fuel but also shortens equipment lifespan and increases maintenance costs. Liebherr has now introduced an innovative solution that transforms crane operations into more efficient, cost-effective endeavors.

First showcased at INTERMAT 2012, Liebherr's Auxiliary Power Unit (APU) provides dedicated power for climate control systems in LR series crawler cranes without requiring the main engine to idle. This technological advancement dramatically reduces fuel consumption, extends maintenance intervals, and ultimately preserves equipment resale value.

Industry data reveals that a typical crawler crane consumes approximately 16 liters of fuel per hour while idling. The APU system substantially reduces this figure, potentially saving operators up to 16,000 liters annually for cranes spending half their operational time in idle mode. These savings translate directly to improved profitability.

Beyond fuel efficiency, the APU system contributes to longer equipment service life. With the main engine operating for fewer hours, maintenance requirements decrease by as much as 50%. This reduction in downtime enhances productivity while lowering long-term ownership costs.

The APU's benefits extend to equipment resale value. Cranes equipped with the system demonstrate less wear and lower operating hours, commanding higher market prices when eventually sold. This preservation of asset value improves overall return on investment.

Liebherr's crawler cranes typically employ powerful 270kW or 450kW diesel engines. The APU system utilizes a compact 11kW Hatz diesel engine specifically designed to meet climate control power demands. This auxiliary unit integrates seamlessly into the crane's machinery compartment, protected from external damage while delivering:

• Fuel efficiency: Advanced combustion technology optimizes energy use
• Operational reliability: Rigorous testing ensures performance in demanding conditions
• Intelligent power management: Automated output adjustment matches system requirements
• Service accessibility: Modular design simplifies maintenance procedures

As environmental regulations tighten and fuel prices fluctuate, auxiliary power systems are gaining recognition as essential equipment rather than optional features. Liebherr's APU technology represents a significant step toward more sustainable construction operations while delivering measurable economic benefits.

The system's combination of operational efficiency, cost reduction, and environmental compliance positions it as a compelling solution for crane operators seeking to optimize their fleets. By addressing both immediate operational challenges and long-term asset management, the technology establishes new standards for equipment performance in heavy construction applications.