Poclain low

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Poclain low
design proposal of new 75
ton excavator to reflect
modern demands for
productivity, fuel efficiency,
ergonomics, safety, etc
02 June 2010
Alberto Seco
A
brand/
machine
research
B
modern demands research
Analysis of hybrid
machines & hydraulic
systems: Volvo 220F
Hybrid, Cat D7E,
Komatsu PC200-8
Hybrid, Kobelco SK80
hybrid, Poclain Servodyn,
Liebherr energy storage
system, . . .
Hybrid systems electric drive systems provide some of the best solutions to recover and storage energy.
Heat inside hydraulic cylinders refrigeration of the hydraulic oil is carried out on the hydraulic oil tank REPLACING THE HYDRAULIC FLUID COOLER BY AN ENERGY RECOVERING SYSTEM
- In a conventional excavator the hydraulic fluid refrigeration system is an energy wasting system.
- By using an efficient energy recovering system the performance could increase by 10% - 15%.
- The size of the hydraulic oil tank could be reduced (less oil, reduced costs, certain ecological approach…).
B
BATTERIES/
CAPACITORS
FUEL TANK
ENERGY RECOVERING
SYSTEM [*]
ELECTRIC
MOTOR
HYDRAULIC
PUMPS
SWING
HYDRAULIC
MOTOR
PARALLEL HYBRID SYSTEM
EQUIPMENT
HYDRAULIC
CYLINDERS
TRACK
DRIVE
HYDRAULIC
MOTOR
[*] Semiconductors or thermoelectrical materials could
be used to extract the heat from the hydraulic fuel tank
which would be sent to the batteries or capacitors.
ENGINE
HYDRAULIC
FUEL TANK
C
first proposals
C1
C2
Poclain’s
language
new treatment best of both
of the colour
approaches
scheme
C3
C1
C2
C3
D
selection of the final
proposals and 3D
development

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