NRG Dynamix, a Deerfield, Michigan, Energy Tech Company, has logged a 60% fuel economy improvement for it hydraulic hybrid postal vehicle. The firm has just begun testing the vehicle in a rigorous stop-and-go duty cycle similar to one the United States Postal Service would subject this vehicle to in both city and rural settings. At a time when the auto manufacturers are trying electrics, electric hybrids, and alternative fuels, NRG Dynamix...

The biggest gains in fuel economy and emissions reductions will come when we remove the mechanical link between the engine and wheels. De-coupling the engine load from the road load allows the engine to run continually at or near maximum efficiency. A hydraulic hybrid does that, and offers more potential for greater fuel efficiency gains and emission reductions right now – more than electric hybrids, full electrics, and alternative fuels....