In hybrid vehicles, an internal combustion engine works alongside a locally emission-free electric motor. But in many full-hybrid vehicles, these two components work very unevenly. Existing full hybrids, for example, can only drive around three kilometers (two miles) on battery power, at speeds never exceeding 30 mph (50 km/h). Most of the time, these hybrid vehicles are powered by their internal combustion engines. The correspondingly small battery is only recharged while the car is driving – usually by recovering kinetic energy during braking maneuvers, a process known as “recuperation” or “regeneration”
A plug improves performance
That’s all due to change in the near future: future hybrid models will rely on more powerful batteries that can also be recharged from external power sockets. ZF is supplementing this plug-in hybrid technology with a hybrid powertrain that enables the cars to operate just like all-electric vehicles: with a range of up to 50 kilometers (30 miles) per battery charge, they can meet most commuters’ daily travel needs using electric power alone. The electric drive is also more than capable of coping with brief sprints at speeds of up to 120 km/h (70 mph) on major roads or highways – the gasoline engine only fires up at higher speeds. The presence of an internal combustion engine also solves the range problem that still afflicts all-electric vehicles.
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