Horse Powertrain, equally owned by Renault and Geely, introduced its D20 Methanol engine in Valladolid, Spain. The compact generator is designed for battery-powered vehicles and uses axial-flux motors to deliver efficiency and power in a small package. The company calls itself a “global leader in new and low-emission powertrain systems.” Its work in Valladolid also draws on a broader engineering relationship with the city’s technical community.
The D20 Methanol weighs 170 kg, produces up to 141 horsepower and has a reported fuel-to-energy conversion rate of 47%. Horse says that means 20 liters of methanol can recharge a 40 kWh battery, potentially reducing refueling stops on long-distance trips. The company’s alternative-fuel manufacturing experience includes gasoline-and-ethanol flex-fuel engines made in Brazil. Its Curitiba cylinder-head facility represents a reported BRL 200 million investment and has annual capacity of 210,000 aluminium cylinder heads. Those components go into the turbocharged 1.0-litre H10 and 1.3-litre H13 engines, a product line separate from the D20.
Information from Horse’s specifications, the D20’s axial-flux motors are 46 times shorter than comparable radial designs and deliver 63% more power. The generator mounts the motors directly onto the crankshaft, giving the unit a pancake-like shape that saves space without sacrificing output. Horse puts the system’s electrical efficiency at 96.4%, with 2.1 kWh of methanol needed to generate 1 kWh of electricity. A high-energy ignition system also enables ultra-lean methanol combustion. Axial-flux electrical machines are being studied at the University of Valladolid, where the research portal records work on electromagnetic field distribution in an axial-flux, slotted permanent-magnet machine.
Fortune Zhao, Horse Powertrain’s Chief Technology Officer, describes the D20 Methanol as a platform for next-generation propulsion. He calls its compactness and efficiency unprecedented in mass-market automotive applications. The axial-flux approach remains rare in production vehicles, and Horse says it helps deliver the power density and size required for modern electric cars.
Range-Extended Electric Vehicles
The D20 Methanol is designed for range-extended electric vehicles (REEVs), a segment attracting drivers who want to make longer journeys without frequent charging. Horse Powertrain’s recent RGEV Medium 2.0 platform promises up to 750 kilometers of range for pure electrics and more than 1,000 kilometers for REEVs, without lengthy charging stops.
The system centers on a four-cylinder, 1.5-liter engine small enough to fit in a carry-on suitcase. It measures 50 cm long, 55 cm wide and 27.5 cm high. Its flexible design allows horizontal or vertical installation, giving automakers more choice in vehicle design and packaging.
Plug-in hybrids (PHEVs) typically offer 50-100 kilometers of electric range. REEVs equipped with the D20 Methanol can support larger batteries and travel much farther on electric power alone. Most daily commutes could be completed without burning fuel, while the methanol generator keeps longer trips practical.
As the electric-vehicle market evolves, manufacturers are racing to improve range and charging speed. Recent advances in battery and motor technology, including those in the latest Chinese electric SUVs targeting Europe, reflect the push for more efficient and multifunctional solutions.
Context and Outlook
The D20 Methanol’s debut comes as Spain positions itself as a hub for automotive new idea. Horse Powertrain says its investment in local manufacturing secures more than 2,200 direct jobs and signals confidence in the country’s role in the global shift to electrification. In Valladolid, the company also works with Aula Horse at the University of Valladolid’s School of Industrial Engineering. The university and Horse describe the initiative as a space for research and innovation, with students involved in industry activity and talent development.
Methanol-fueled generators remain uncommon, but their potential to extend electric-vehicle range with minimal emissions could make them a transitional technology. As infrastructure and consumer habits adapt, Horse’s D20 Methanol could help bridge the gap between today’s hybrids and tomorrow’s fully electric fleets.
