Construction Equipment and Technologies / CTT

December 1, 2008

Caterpillar 988HFuel Management System

Fuel Management creates three operating modes for a Caterpillar 988H wheel loader — Full Power, Balanced Power and Max Fuel Savings. The system always maintains a top engine speed of 1,800 to 1,900 rpm while the machine is digging. When the machine is not digging, in Full Power mode maximum engine speed runs up to 2,120 rpm for high production. In Balanced mode engine speed outside the digging cycle is maintained at 1,800 rpm, and in Max Fuel Savings mode the non-digging engine speed drops to 1,700 rpm. Cat says Balanced and Max Fuel Savings modes can cut fuel consumption by 10 to 15 percent. Fuel Management is standard equipment on all 988H wheel loaders.

Managers Digest

January 1, 2008

Cat Cuts 988H Fuel Use 15 Percent

A retrofittable Fuel Management System can reduce the 475-horsepower 988H's consumption while producing "within a few percent of maximum."

Staff A retrofittable Fuel Management System can reduce the 475-horsepower 988H's consumption while producing "within a few percent of maximum."

Cat says its new 988H Wheel Loader Fuel Management System in balanced mode delivers fuel savings of as much as 15 percent in truck loading (more in load-and-carry operations) — while keeping production "within a few percent of maximum." By lowering engine speed during all but the digging portion of each cycle, the system minimizes impact on productivity while gaining significant fuel savings. The system is available on new 988H loaders and can be retrofitted to 988H loaders already in the field.

Three operating modes — full power, balanced, and max fuel savings — allow the operator to quickly adjust to changing production demands with a switch in the cab. Max-fuel-savings mode lowers engine speed more during all segments of a cycle except digging, bringing greater fuel savings but with a more substantial drop in productivity.

Cat's own study in a quarry suggested that a 988H burns 17.7 gallons per hour in full-power mode, but consumption dropped to 13.8 gallons per hour in balanced mode.

Http://www.constructionequipment.com/Equipment/7879.html

Wheel Loaders, Greater than 109 hp IntroductionsVolvo

At 98 and 115 net horsepower respectively, two mid-sized models are the latest additions to Volvo’s F-Series range of wheel loaders. The 19,070-pound L45F and 20,790-pound L50F feature Volvo’s patented torque parallel loader linkage, which provides smooth parallel lift, high rollback torque and lifting power throughout the lift range. A key element to any wheel loader is visibility, says Volvo, and the linkage on both new machines provides “class-leading” pallet visibility and a clear view of attachments. A wide rollback angle enhances loose material retention, and parallel lift suits the machines for material handling and pallet handling. The use of separate power steering and load-sensing hydraulic pumps provides full steering power, regardless of the load on the main hydraulic pumps. Oil flow on the load-sensing pump automatically adjusts to match work demand. With initial rollout in Europe in December, delivery of the Volvo L45F and L50F will expand internationally throughout 2009. - 12/1/2008

http://www.hydraulic-equipment-manufacturers.com/hydraulic-excavators.html

Hydraulic Excavators

A hydraulic excavator is a high performance machine used in excavation work at confined sites where conventional counterparts are cannot work effectively. The operation body of a hydraulic excavator generally has three cylinders- boom cylinder, arm cylinder and bucket cylinder.

The all-purpose hydraulic excavators offer lower noise levels, superior traction force and have a wheel loader that offers combination of traction and breakout force to maximize use of rated capacity. The heavy duty excavators are useful in logging road works where the short tail swing radius is effective when the machine is operating on narrow roads on steep slopes.

The short tail design and round form in the hydraulic excavators reduces the need for operators to constantly check behind for movement enhancing operating efficiency and safety. The heavy lifting capacity and high stability are attained through large counterweight that requires no additional clearance.

http://www.roadsonline.com.au/index.php?roads&aid=605&issue_s=51