Auto News

Toyota developing more powerful, fuel efficient powertrains


Toyota reveals lighter, more responsive powertrain systems for TNGA platform

Toyota Motor Corporation recently developed advanced engines and transmissions as well as improved hybrid systems based on the Toyota New Global Architecture (TNGA) structural reform, reducing both fuel consumption and CO2 emissions.

The manufacturer said that they aim to produce cars with driving performance that responds according to the driver's will and be fuel efficient at the same time. Toyota estimates this will result in providing 10-percent better power performance and 20-percent better fuel economy.


The new 2.5-liter direct-injection, inline 4-cylinder gasoline engine dubbed Dynamic Force Engines provide greater thermal efficiency with 40-percent when used in gasoline-powered vehicles and 41-percent in hybrid vehicles, which results to a high output.

Meanwhile, the new 8-speed and 10-speed automatic transmissions minimize energy loss and heighten transmission efficiency. It is also more compact and lighter than conventional transmissions, lowering a vehicle's fuel requirements. With its lower center of gravity, it enhances straight-driving stability as well as cornering stability.

In addition, it is also equipped with widened gears and a newly developed high-performance compact torque convertor, which provide a broader gear lockup range. The direct shift 10-speed gearbox also enables a lag-free and and rhythmical acceleration meeting the driver expectations.

The revamped hybrid system II 2.5-liter engine, on the other hand, excels in both power and fuel-economy performance. It provides hybrid vehicles an all new driving image with its start-from-stop acceleration performance. It has better fuel economy at highway speeds.

In addition, the dual-mode system for plugin hybrid vehicles (PHVs) has also been improved, now providing direct driving power. PHVs also get a large-capacity lithium-ion battery, which increases the EV-mode range of up to 60 kilometers or more.

By 2021, Toyota aims to reveal 17 versions of nine engines, 10 versions of four transmissions and 10 versions of six hybrid systems. Also, by the end of 2021, the company expects to produce the new powertrain units in at least 60-percent of Toyota-brand and Lexus-brand vehicles sold annually in Japan.

The automaker also said that starting next year, Toyota is planning to release the new powertrain units in a rapidly broadening range of vehicle models.

Read more

Recent Articles