ForConstructionPros.com

With the recent volatility of diesel fuel prices, increased efficiency takes on a renewed sense of urgency. Advancements in wheel loader designs deserve a close look if you are considering an upgrade.

Manufacturers have made significant advancements in fuel efficiency through a combination of new engine technologies coupled with load-sensing hydraulic systems.

"With the new H Series mid-size wheel loaders (216 to 307 hp), Caterpillar takes a system integration approach to improving fuel economy while improving productivity," says Geoff Perich, product manager for Caterpillar MWL Americas.

This includes use of ACERT electronically-controlled engines with multiple-injection fuel delivery, load-sensing hydraulics and a hydraulically driven on-demand (cooling) fan. The result is up to a 5 percent fuel efficiency gain over the previous models.

This approach carries over to the smaller wheel loaders, as well. Caterpillar's Paul Travaillot estimates the combination of electronically-controlled engines with the load-sensing hydraulics and hydraulic on-demand fan results in a 10- to 15-percent fuel efficiency advantage vs. a loader without these features. It can even make a difference with novice operators. "An experienced operator is going to have an advantage," he admits. "But the way our machines are designed, even a novice operator can still realize fuel efficiency."