Toyota’s new internal-combustion engines are called
“Dynamic Force Engines”, and the first of them is available in the 2018 Toyota
Camry. Toyota will introduce more engines with “Dynamic Force” tech, it has
emerged. The company plans to offer them in vehicles other than cars, including
trucks and UVs.
The development was revealed to Automotive News, by
Ben Schlimme, Executive Program Manager, Toyota Motor North America (Advanced
Planning & Research). “Dynamic Force is not solely aimed at the 2.5-liter
engine,” Mr Schlimme said.
While close competitors like Honda and Volkswagen
are embracing the shift towards turbocharged engines, Toyota has a plan of its
own. The 2018 Toyota Camry is available with the all-new 2.5-litre naturally
aspirated engine, which produces up to 206 hp and up to 252 Nm of torque. Instead of using turbochargers, Toyota engineers worked on the
cooling, exhaust flow and friction reduction, and enhanced the intake system.
The result is that the 2.5L naturally aspirated petrol engine has an impressive
thermal efficiency rate of 40%.
The engine’s intake system is the highlight of the
Dynamic Force tech. The engineers have changed the intake valve’s angle, made
the angle between the intake and exhaust valve wider and have used modified
pistons and laser cladded valve seats. Thus, the air/fuel mixture moves into
the cylinder in a swirling motion. The swirl improves combustion, and a result,
the power output increases and the emissions lower.
Toyota has developed V6 and V8 engines using the
Dynamic Force tech, but they are in the concept form. While the report has no
mention of this, it is natural to expect the production version of the Dynamic
Force V6 engine in the 2019 Toyota Avalon due next year.