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Ce hybrid excavator dec09
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“Fuel consumption is far less than a standard machine when you are loading a truck or digging a ditch -- doing a lot of swinging applications,” Maloon says.“If you are not doing a lot of swing applications, then you’re not going to be save as much fuel.” The cab hosts just a couple of minor changes.The LCD monitor, for example, now displays a readout and status of the hybrid system.

Also, just below the monitor sits a red button, which, if engaged, shuts off swing-arm operation in the event that the hybrid system malfunctions.Komatsu says it is currently able to produce 100 Hybrid PC200LC-8 excavators each month at its Japan facilities.For now, Komatsu is distributing 10 units of the hybrid excavator to construction companies in U.S.regions that have strict emissions requirements.Page 3of Komatsu's Hybrid Excavator 'Swings' into Action -01/01/2010 -Construction Equipmentthrough an inverter to convert it to DC energy, and then stored in a capacitor.Unlike hybrid cars that use a battery to store and discharge electricity gradually, Komatsu’s hybrid excavator employs a capacitor instead because of the quick bursts of energy required by large equipment such as excavators.When the capacitor receives DC energy from the inverter, it discharges the energy immediately assist the upper structure or the engine.“With a capacitor, we can store energy and have instantaneous energy available,” says Komatsu project manager Sean Maloon, “where as a battery would have to wait for a chemical reaction for it to work.” Also powering the excavator is a generator motor located in between the engine and the hydraulic pump.The generator charges the capacitor when the swing arm is not in use, and it receives energy from the capacitor to help drive the engine.In terms of performance, the 138-horsepower Hybrid PC200LC-8 is virtually indistinguishable from its non-hybrid brother, Maloon says.Both the hybrid and conventional versions of the PC200LC-8 have an operating weight range of 43,643 and 47,260 pounds.Both excavators also have a digging arm force of 27,780 pounds, swing torque of 49,907 foot-pounds, and digging depth of 21 feet 9 inches.Boom, stick and bucket cycle times remain unchanged.The differences come into play when measuring fuel use and emissions.

According to Komatsu, the Hybrid PC200LC-8 consumes 25 to 41 percent less fuel than its non-hybrid counterpart.It also produces less carbon-dioxide emissions; in a typical hour of operation, the hybrid excavator emits 22 pounds less C02.

The hybrid system is not solely responsible for the reduction in fuel consumption.

While the conventional PC200LC-8 runs on a 6-cylinder engine, the hybrid is powered by a 4-cylinder engine.As a result, the hybrid excavator runs at lower idle.“We lower the cylinder output and the engine RPM, and we use the generator motor and the stored energy in the capacitor to assist this 4-cylinder engine to act like a 6-cylinder engine,” Maloon says.

“Less cylinders mean we burn less fuel.”

Because the excavator produces energy via the swing motor, operators will see more fuel savings the more they use the swing function, Maloon says.How Komatsu's Hybrid System WorksKomatsu's hybrid system uses the stopping force of the upper structure to produce energy.That energy is stored in a capacitor and then discharged immediately to help power the swing arm, engine, and other machine components.Click to Enlarge ImageGraphic and video animation: Komatsu Below, Komatsu's Sean Maloon explains how the Hybrid PC200LC-8 generates energy and how operators can montior the hybrid system.

Page 2of Komatsu's Hybrid Excavator 'Swings' into Action -01/01/2010 -Construction EquipmentLog by

EquipmentNew EquipmentMaintenance & ManagementSpecificationsFind Dealers & ManufacturersMagazine ArchivesKomatsu's Hybrid Excavator 'Swings' into January 1, 2010By Andrew Baltazar, Associate EditorAccording to Komatsu, the Hybrid PC200LC-8 excavator sips fuel and cuts down on emissions.Hybrid technology is all the rage these days
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.Carmakers continue to add hybrid vehicles to their product line-ups, and in the last few years, construction-equipment manufacturers also have entered the game.Volvo, for instance, will soon bring a hybrid wheel loader to the market, and Doosan and Kobelco both are developing a hybrid excavator.

In North America, the first equipment manufacturer to get out of the gate with a large hybrid excavator is Komatsu, which has begun putting its Hybrid PC200LC-8 into the hands of U.S.suppliers.

Komatsu began selling the hybrid excavator to Japanese construction companies in mid-2008 and to Chinese companies in August 2009.

Taking a cue from hybrid cars, which produce energy from the friction of braking, the Hybrid PC200LC-8 generates electricity each time the operator brings the upper structure to a stop.

AC energy created by the stopping force of the swing motor is sent Home

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Ce dozers dec07
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EquipmentNew EquipmentMaintenance & ManagementSpecificationsFind Dealers & ManufacturersMagazine ArchivesHeavy EarthmovingDecember 1, 2007StaffAlthough Komatsu's D51 crawler dozer replaces the D41, the D51EX-22 (standard) and D51PX-22 (low ground pressure) boast a ground-up redesign.According to the company, there are no aspects of the machine that were not improved upon from the D41.The new machine uses a dual mode hydrostatic transmission (choice of 3 or 20 speeds) and a 130-horsepower Komatsu Tier 3-certified engine.

By moving the cooling package from under the hood to the rear of the machine, the company was able to steeply slope the hood, providing best-in-class blade visibility.In addition, the operator's station has been moved forward almost two feet closer to the blade.It also features a new track design and 10- or 11-foot, six-way power angle tilt blade with a capacity of 3.5 to 3.8 cubic yards.

Estimated list price: $150,000–$220,000.Home

Article -mailPrintSubscribe to magazineApril 16,2010add to Del.icio.us Free Magazine SubscriptionFree eNewsletter SubscriptionsContact UsAdvertise/ Media KitEarthmovingLifting & Concrete PlacementPaving & Materials ProductionCompactionCompact EquipmentAttachmentsTrucking & HaulingUnderground EquipmentLight EquipmentDemolition, Recycling & Waste HandlingForestryMaintenance & RepairConstruction Materials & SuppliesSafety & SecurityConstruction Technology & SoftwarePage 1of ger -12/01/2007 -Construction EquipmentLog by

EquipmentNew EquipmentMaintenance & ManagementSpecificationsFind Dealers & ManufacturersMagazine ArchivesHeavy EarthmovingDecember 1, 2007StaffAlthough Komatsu's D51 crawler dozer replaces the D41, the D51EX-22 (standard) and D51PX-22 (low ground pressure) boast a ground-up redesign.According to the company, there are no aspects of the machine that were not improved upon from the D41.The new machine uses a dual mode hydrostatic transmission (choice of 3 or 20 speeds) and a 130-horsepower Komatsu Tier 3-certified engine.

By moving the cooling package from under the hood to the rear of the machine, the company was able to steeply slope the hood, providing best-in-class blade visibility.In addition, the operator's station has been moved forward almost two feet closer to the blade.

It also features a new track design and 10- or 11-foot, six-way power angle tilt blade with a capacity of 3.5 to 3.8 cubic yards.Estimated list price: $150,000–$220,000.Home

Article -mailPrintSubscribe to magazineApril 16,2010add to Del.icio.us Free Magazine SubscriptionFree eNewsletter SubscriptionsContact UsAdvertise/ Media KitEarthmovingLifting & Concrete PlacementPaving & Materials ProductionCompactionCompact EquipmentAttachmentsTrucking & HaulingUnderground EquipmentLight EquipmentDemolition, Recycling & Waste HandlingForestryMaintenance & RepairConstruction Materials & SuppliesSafety & SecurityConstruction Technology & SoftwarePage 1of ger -12/01/2007 -Construction Equipment.
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Komatsu is the world's second largest manufacturer of construction and mining equipment after Caterpillar.
JOB Country Manager West Africa: Mining Construction Agricultural Manufacturing equipment rental
JOB Country Manager West Africa: Mining Construction Agricultural Manufacturing equipment rental
Komatsu is the world's second largest manufacturer of construction and mining equipment after Caterpillar.
JOB Country Manager West Africa: Mining Construction Agricultural Manufacturing equipment rental
Komatsu is the world's second largest manufacturer of construction and mining equipment after Caterpillar.
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