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A prototype AC Propulsion tzero electric car with an external range-extender or genset trailer, 1999. A range extender is a fuel-based auxiliary power unit (APU) that extends the range of a battery electric vehicle by driving an electric generator that charges the vehicle's battery.
The free-piston linear generator (FPLG) uses chemical energy from fuel to drive magnets through a stator and converts this linear motion into electric energy. Because of its versatility, low weight and high efficiency, it can be used in a wide range of applications, although it is of special interest to the mobility industry as range extenders for electric vehicles.
Free-piston linear generators that eliminate a heavy crankshaft with electrical coils in the piston and cylinder walls are being investigated by multiple research groups for use in hybrid electric vehicles as range extenders. The first free piston generator was patented in 1934. [10] Examples include the Stelzer engine and the Free Piston Power ...
Such a vehicle conceptually resembles a diesel–electric locomotive with the addition of a battery that may power the vehicle without running the ICE and acting as an energy buffer that is used to accelerate and achieve greater speed; the generator may simultaneously charge the battery and power the electric motor that moves the vehicle.
Manufacturer has to discourage careless and unjustified use of range extender. [15] Vehicle has to be recharged from external source for next commute or be functionally noticeably limited in battery depleted mode: for example, limited performance, extended range shorter than electric range and limited top speed - these shall ensure ...
Electric-vehicle owners often feel "range anxiety," even as mileage numbers have improved dramatically over the past 15 years. Here are some ways for owners to optimize their range.