Liebherr has announced the industry’s first hydraulic hybrid drive for mobile harbour cranes. The new Pactronic® - hybrid drive system increases handling performance while reducing fuel consumption.
Pactronic® will be introduced to the market on the new LHM 550, it will then be gradually rolled out on more crane models and by 2013 Pactronic® will be offered on Liebherr’s entire mobile harbour crane range.
Pactronic® - Power with Accumulator and Electronics
Liebherr Pactronic® is a new hydraulic hybrid drive system which is characterized by an energy storage device. A hydraulic accumulator supplements the fluid pump in delivering power to the system. It serves as a pressure storage reservoir incorporating a gas in conjunction with a hydraulic fluid. Energy is stored in this compressed gas to be released upon demand.
Liebherr Pactronic® is also an impressive power booster. Hoisting as well as lowering speeds are increased substantially with given diesel engine output. Thus the crane’s efficiency reaches new levels with higher turnover figures.
In addition, the crane’s fuel consumption is significantly reduced. This is achieved by fully utilizing the reverse energy and surplus power within the system.
Pactronic® - Mode of Operation
The conventional, hydrostatic hoist system of a Liebherr Mobile Harbour Crane is driven by a hydraulic motor, a pump and the prime mover (diesel or electric engine).
With Pactronic® a secondary energy source is added to the drive system. Charging of the accumulator is done by regenerating the reverse power while lowering the load. In addition, the surplus power of the primary energy source is also used for charging.
The stored energy of the accumulator is transferred back to the system when the crane requires peak power during hoisting. Consequently, the total hoisting power is the sum of the conventional hydrostatic power and the secondary energy, provided by the accumulator.
The accumulator is based on proven energy storage technology and has a designed service life equal to the crane. For increased efficiency, Pactronic® allows fast charging and discharging of the accumulator. The system is virtually maintenance free and is not affected by ambient temperature. The accumulator just needs visible inspections every 10 years and in addition, it is 100% recyclable.
The Pactronic® formula: up to 30% performance increase
Pactronic® is most useful in situations where peak power is required, such as dedicated bulk handling for example. In comparison to Liebherr Mobile Harbour Cranes with a conventional drive system and identical turnover in terms of tonnes per hour the Pactronic® hybrid version needs 30% less fuel depending on the crane’s operation mode.
In the current challenging economic times, it is important that large hybrid energy developments such as the Liebherr Pactronic® continue for sustainable carbon emission reductions. In-line with the fuel consumption, CO2 emissions are also decreased by 30%.
It is also beneficial for those users operating their cranes nearby residential areas where noise emissions are a crucial criteria as another key advantage of the Pactronic® is its reduced noise exposure.
When an application is started that requires the additional power, the Pactronic® can transfer power back to the system and jncrease the hoisting capabilities of the crane. When comparing the Pactronic® drive system with a conventional Liebherr Mobile Harbour Crane with identical primary energy (diesel engine or e-drive) installed, hoisting power is doubled resulting in an increased hoisting and lowering with up to 100% higher speeds. In terms of turnover capacity, the user benefits from the increase in performance of ~30%.
Sustainable technologies have always been high on Liebherr’s agenda. Production and products are constantly optimised to help reduce CO2 emissions and pollutants. Pactronic® stands for innovative, economical and environmentally friendly technology, energy recovery and increased performance with hybrid power.
“Offering a unique combination of extremely low fuel consumption and supreme performance, Pactronic® represents an essential milestone in Liebherr’s strategy on the way to genuine ultra-efficient, low-emission cargo handling. Liebherr-Werk Nenzing GmbH looks forward to working with all customers to ensure that the Liebherr Pactronic® drive system will boost their cranes’ performances in line with a revolutionary new hydraulic hybrid drive system”, says Dr. Klaus Schneider.
New Liebherr Hybrid Power Booster
Liebherr Pactronic® - Hybrid Power Booster
Liebherr has announced the industry’s first hydraulic hybrid drive for mobile harbour cranes. The new Pactronic® - hybrid drive system increases handling performance while reducing fuel consumption.
Pactronic® will be introduced to the market on the new LHM 550, it will then be gradually rolled out on more crane models and by 2013 Pactronic® will be offered on Liebherr’s entire mobile harbour crane range.
Pactronic® - Power with Accumulator and Electronics
Liebherr Pactronic® is a new hydraulic hybrid drive system which is characterized by an energy storage device. A hydraulic accumulator supplements the fluid pump in delivering power to the system. It serves as a pressure storage reservoir incorporating a gas in conjunction with a hydraulic fluid. Energy is stored in this compressed gas to be released upon demand.
Liebherr Pactronic® is also an impressive power booster. Hoisting as well as lowering speeds are increased substantially with given diesel engine output. Thus the crane’s efficiency reaches new levels with higher turnover figures.
In addition, the crane’s fuel consumption is significantly reduced. This is achieved by fully utilizing the reverse energy and surplus power within the system.
Pactronic® - Mode of Operation
The conventional, hydrostatic hoist system of a Liebherr Mobile Harbour Crane is driven by a hydraulic motor, a pump and the prime mover (diesel or electric engine).
With Pactronic® a secondary energy source is added to the drive system. Charging of the accumulator is done by regenerating the reverse power while lowering the load. In addition, the surplus power of the primary energy source is also used for charging.
The stored energy of the accumulator is transferred back to the system when the crane requires peak power during hoisting. Consequently, the total hoisting power is the sum of the conventional hydrostatic power and the secondary energy, provided by the accumulator.
The accumulator is based on proven energy storage technology and has a designed service life equal to the crane. For increased efficiency, Pactronic® allows fast charging and discharging of the accumulator. The system is virtually maintenance free and is not affected by ambient temperature. The accumulator just needs visible inspections every 10 years and in addition, it is 100% recyclable.
The Pactronic® formula: up to 30% performance increase
Pactronic® is most useful in situations where peak power is required, such as dedicated bulk handling for example. In comparison to Liebherr Mobile Harbour Cranes with a conventional drive system and identical turnover in terms of tonnes per hour the Pactronic® hybrid version needs 30% less fuel depending on the crane’s operation mode.
In the current challenging economic times, it is important that large hybrid energy developments such as the Liebherr Pactronic® continue for sustainable carbon emission reductions. In-line with the fuel consumption, CO2 emissions are also decreased by 30%.
It is also beneficial for those users operating their cranes nearby residential areas where noise emissions are a crucial criteria as another key advantage of the Pactronic® is its reduced noise exposure.
When an application is started that requires the additional power, the Pactronic® can transfer power back to the system and jncrease the hoisting capabilities of the crane. When comparing the Pactronic® drive system with a conventional Liebherr Mobile Harbour Crane with identical primary energy (diesel engine or e-drive) installed, hoisting power is doubled resulting in an increased hoisting and lowering with up to 100% higher speeds. In terms of turnover capacity, the user benefits from the increase in performance of ~30%.
Sustainable technologies have always been high on Liebherr’s agenda. Production and products are constantly optimised to help reduce CO2 emissions and pollutants. Pactronic® stands for innovative, economical and environmentally friendly technology, energy recovery and increased performance with hybrid power.
“Offering a unique combination of extremely low fuel consumption and supreme performance, Pactronic® represents an essential milestone in Liebherr’s strategy on the way to genuine ultra-efficient, low-emission cargo handling. Liebherr-Werk Nenzing GmbH looks forward to working with all customers to ensure that the Liebherr Pactronic® drive system will boost their cranes’ performances in line with a revolutionary new hydraulic hybrid drive system”, says Dr. Klaus Schneider.
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Attachments
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