Subaru, Mazda, and Toyota convened a joint conference in Japan in May to reaffirm their dedication to combustion engines. Shortly after, Subaru unveiled preliminary details about its electrified boxer powertrain. Now, more comprehensive information has been released, with the Crosstrek set to be the first model to feature the next-generation hybrid system in December.
Central to this new hybrid system is a naturally aspirated, horizontally opposed 2.5-liter engine, specifically engineered for electrified applications. It delivers 158 horsepower at 5,600 rpm and 154 pound-feet (209 Newton-meters) of torque between 4,000 and 4,400 rpm. The engine is supported by a larger gas tank, facilitated by relocating the power control unit from beneath the cargo floor to above the combustion engine. This configuration allows the fuel tank to hold 16.6 gallons (63 liters), enhancing the Outback's cruising range to over 621 miles (1,000 kilometers) on a single tank—a record for Subaru. However, this range is theoretical and based on the generous WTLC cycle.
The gas engine collaborates with two electric motors: one for driving the wheels and another as a generator. The traction motor offers 118 hp and 199 lb-ft (270 Nm). Although Subaru hasn't disclosed the combined output, it emphasizes that the traction motor can serve as the primary power source in various scenarios. The Crosstrek employs a series-parallel system, enabling it to use either the gas engine or the electric motor. Despite promising 'extended EV driving,' the 1.1-kWh battery limits its range before the combustion engine takes over. The lithium-ion battery, positioned under the cargo floor, is a new development, known for its lightweight, long-lasting, and high-density properties.
As expected from a Subaru, the Crosstrek features a symmetrical AWD system, mechanically linking the front and rear wheels via the propeller shaft. Additionally, the Crosstrek boasts a robust 1,500-watt outlet in the cargo area, ideal for connecting appliances or electric camping gear.
When the new e-boxer setup was announced, Chief Technology Officer Tetsuo Fujinuki acknowledged that a boxer engine isn't the most efficient solution. However, Subaru's heritage prevents them from abandoning it: 'If efficiency were the sole goal, horizontally opposed engines might not always be the best choice. But what would Subaru be without them? We are the only mass-market brand still producing horizontally opposed engines.'
The JDM-spec Crosstrek hybrid is slated for release in December 2024, with a global rollout of the hybrid system expected next year.
Source link: https://www.motor1.com
