Swedish Supplier Haldex AB is migrating its automotive customers to its new fourth-generation all-wheel-drive system, which the company says is more cost-effective, lighter and faster because it uses fewer parts.
The first vehicle offering the new AWD system wasAG's small Tiguan cross/utility vehicle. Since then, other VW Group brands have gravitated to the technology, including the VW Golf and Passat; and Audi TT and A3.
The new AWD system adds a hydraulic-pressure accumulator, allowing for near-instantaneous torque output, says Ulf Herlin, vice president business development-Haldex Traction Systems Div.
“Before we were generating pressure by using a differential speed pump,” Herlin tells Ward's. “Now we've got an accumulator, and we can apply (full) torque at any time.”
Corp. is the most recent auto maker to sign a contract with Haldex, with plans to debut a modified version of the new AWD system on the Cadillac SRX '10 cross/utility vehicle.
The system, which Haldex and GM spent 2.5 years developing, uses the coupling found on the standard fourth-gen system but employs a differential brake in the rear axle that can control the left and right rear wheels, Herlin says.