Toyota is apparently still resistant to jumping on the forced induction bandwagon as automakers search for ways to increase fuel economy. While Toyota is no stranger to forced induction, the Japanese auto giant has solely relied on efficient, naturally aspirated motors, which have done a good job at keeping fuel economy elevated.
According to AutomotiveNews after speaking with Koei Saga, Toyota’s senior managing officer for drivetrain research and development, Toyota is even looking to increase the displacement of their engines, using the Atkinson cycle to result in better power gains without sacrificing fuel economy.
The solution: utilizing the Atkinson cycle engine, which holds the intake valves open longer, resulting in reducing the length of the compression stroke and pump losses. Efficiency increases with a trade loss of torque, though Atkinson cycle engines have proven useful in hybrid applications where the assisting electric motors provide extra torque.