The varieties of hybrid electric designs can be differentiated by the structure of the hybrid vehicle drivetrain, the fuel type, and the mode of operation.In 2007, several automobile manufacturers announced that future vehicles will use aspects of...

In some cases, manufacturers are producing HEVs that use the added energy provided by the hybrid systems to give vehicles a power boost, rather than significantly improved fuel efficiency compared to their traditional counterparts. The trade-off...

A hybrid train is a rail vehicle or train that uses an on-board rechargeable energy storage system (RESS), placed between the power source (often a diesel engine prime mover) and the traction transmission system connected to the wheels.Surplus energy...

Early designs: 1899-1917Lohner Porsche * 1899: Ferdinand Porsche, then a young engineer at Jacob Lohner & Co. creates the first gasoline-electric hybrid vehicles. * 1900: Carmaker Pieper of Belgium introduced a vehicle with an under-seat...