Benoit

I was scrolling the internet randomly today as I met this comment in french :

Translation :
"I think what Lexus is lacking in the moment, is an engine that is ready for the actual challenges of todays car industry. An engine that not only would be capable of great performance if fitted with a solid turbo in auto cycle, but that could also be economic when runned in Atkinson cylce and paired with the Lexus Hybrid system. Lexus doesn't have such a candidate for the moment and it's obivous to see.* Maybe it would be the moment for them to think of a valuable successor of the 2JZ, that could be transformed to fit the challenges of today (imagine a 2JZ of 2.7L, with chain distribution) that would be rather compact, would have great mileage and would be powerful."


I really find the idea of this guy great. Imagine how many engines could simply be replaced by one single engine. I could clearly imagine the different variants of this adapted throughout the whole Lexus product range. The RC would receive the 2.7 twinscroll, the IS would be fitted with the 2.7 NA, both cars could have a 270H version. In the same time the UX could get the 270H. The production costs could be reduced a lot.

I could easily imagine the 2.7 to be able of a reliable 320 horsepower with turbo and auto cycle, and a respectable 210 hp in Atkinson. Again, very reasonable and future oriented.

Great idea in my eyes. The only problem I see, is that Lexus probably doesn't have any intention to modernize it's engine fleet in this awakening era of EV vehicles.

axel04

I think Toyota can make great engines without using turbos. The 2.5l four cylinder they have today is as powerful as the v6 IS250 they had years ago. The problem with the Japanese auto brands instead of doing what they are good at, they have found themselves being led by the Germans. Forget the turbos and take these engines to Yamaha for more performance. The v8 RCF engine that engine is also not running at its maximum

bitkahuna

iTrader: (20)

i think you're going to see combustion engine development massively cut back in favor of electric (or hybrid) drive trains.

Sulu

Oh, I think there are still improvements that can be made to the internal combustion piston engine.

There is the free-valve (no-cam) engine, with the intake and exhaust valve timing and lift completely and infinitely variable rather than controlled by cams. Supercar maker Koenigsegg is working on this.

In conjunction with variable valve timing and lift, there is the throttle-less engine, with no butterfly valve to control the volume of air into the engine. This is already possible with variable valve timing and lift controls, such as Fiat's MultiAir engines, BMW's Valvetronic engines and Toyota's Valvematic engines.

This could be in conjunction with precisely-tuned forced induction.

And there is the compression-ignition gasoline engine, soon to be introduced on the Mazda 3.

bitkahuna

iTrader: (20)

didn't mean to imply there aren't any improvements coming.