Horse Powertrain unveils methanol REEV engine

Horse Powertrain has unveiled its new HORSE D20 Methanol powertrain, designed as a range extender for electric vehicles (REEVs). The unit integrates a four-cylinder, 2-liter turbocharged engine with power electronics and a generator.

The engine operates on 100% methanol fuel and is capable of cold starts at temperatures as low as -35 degrees Celsius. A key feature is the inclusion of an axial flux motor, claimed to be one of the first mass-market applications in the automotive industry. This motor design is 46% shorter and offers 63% greater volumetric power density compared to equivalent radial flux motors.

The complete powertrain achieves a 47% fuel-to-energy conversion ratio. This efficiency allows a 40 kWh battery to be recharged using just 19.6 liters of methanol. Details regarding the commercial availability or specific vehicle applications for this technology have not yet been released by the company.

This powertrain technology presents a potential alternative for extending the range of electric vehicles, addressing consumer concerns about charging infrastructure limitations on longer journeys. The use of methanol, particularly if produced sustainably, could also offer emissions advantages over traditional fossil fuels.