- Today, Toyota Global Newsroom released a load of very exciting information about its upcoming TNGA powertrain. They provided the first data of the workhorse 2.0L Dynamic Force engine, the CVT transmission and a 6-speed manual accompanying it, an updated "high power" hybrid system, and a long overdue torque vectoring AWD:
What's even more interesting is an image showing the pieces still missing from the "9 models and 17 variants of engines and 6 models and 10 variations of hybrid systems" which gives us a LOT of insight into what to expect for the next three years:
But before figuring out those missing pieces, let's recap what they have launched so far:
1) THS-II (1.8L), the hybrid powertrain used by the Prius/Prius Prime/C-HR Hybrid, in two variations, plug-in and non plug-in. It uses a 2ZR-FXE I4 engine carried over from previous generation Prius, but with the ESTEC upgrade package to reach a 40% thermal efficiency. It also introduced a much more compact parallel (previously serial) motor transaxle that will become a standard design on all future transverse hybrid systems.
2) THS-II Multistage, the hybrid powertrain used by Lexus LC500h/LS500h. It uses a 2GR-FKS V6 engine that still has the base design of the 2GR-FSE, but updated with VVT-iW. The most innovative change about it is obviously the inclusion of a 4-speed automatic transmission to provide more torque amplification at lower gears, and lower cruising rpm/higher top speed at higher gears. The design is obviously performance-oriented, allowing the LC500h to catch a LC500 in short sprints before the big V8 gets into the power band. Basically, it offers 'a feel of a 5.0L V8 engine' in most daily driving scenarios, although that can be debated.
3) A25A-FKS/A25A-FXS and THS-II (2.5L). The first member of the Dynamic Force family, this engine is the culmination of a decade of research by TMC. It is obviously designed with efficiency in mind, reaching a world record 40%(gas-only)/41%(hybrid) thermal efficiency. But more impressively, it does so while not sacrificing power and response: the engine still makes 60kW(80hp)/L and has higher torque at any rpm than the outgoing AR series.
4) V35A-FTS. Currently the flagship engine for Lexus. Same philosophy as the A25A-FKS but a slightly less undersquare design to fit within the 3.5L limit for tax reasons. It also incorporates a very compact twin-turbocharging system that doesn't require a 'Hot-V' configuration used by the Germans. It certainly did not impress the enthusiasts compared to the roaring 2UR-FSE, but it delivers 416hp at a very high efficiency. Its turbocharged nature also works in better cohesion with Aisin's tall ratio 10-speed automatic than the naturally aspirated V8.
5) Today, the A20A-FKS/A20A-FXS and THS-II (2.0L) engine is launched. It will be the main workhorse engine for most Toyota models out of North America, and will also be used on Lexus UX and 7ES. It's basically a scaled-down A25A with the only difference being a slightly higher specific output of 63kW(84hp)/L.
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