Bendix Commercial Vehicle Systems says ongoing tests confirm that its air management system reduces fuel consumption by more than 4% in medium-duty trucks. The system, consisting of the company’s PBS Air Injection Booster, Turbo-Clutch Air Compressor, and Electronic Air Control Dryer, was tested in a P&D application.

Not surprisingly, Bendix sees this as a part of the solution when we get to implementation of the proposed EPA and NHTSA rule to reduce fuel consumption and greenhouse gases starting in 2014.
 
The Bendix PBS engine booster is unique. Placed near the air-intake manifold on an engine, at a closely monitored ‘right’ moment it injects compressed air from an auxiliary air tank into the manifold and thus overcomes turbo lag by allowing the turbocharger to spin up to its full capacity.

The pneumatically operated single-cylinder Bendix Turbo-Clutch Air Compressor works together with it and with the company’s Electronic Air-Controlled Dryer (EAC) so that the compressor disengages during the portion of the duty cycle when no air is demanded. This is said to greatly reduce power consumption and thus reduce fuel consumption too. With much less overall cycling, the compressor’s life cycle is "significantly" increased because there’s much less normal wear and tear.