Toyota base their engine generations on two criteria: emissions compliance level (usually defined by Euro standards) and common technology set. So by that standard the new family is completely new: they are going from very undersquare cylinders to near-square cylinders, from low downsizing ratio (<90kW/L) to high downsizing ratio (>100kW/L), and every engine will be Euro 7 compliant.
- Thread starter ssun30
- Start date
Thanks SSUN, I appreciate the input. It will be interesting to see what other engines evolve over the next 5-7 years or so.
davidlovelexus
Fan
- Messages
- 50
- Reactions
- 65
Some latest update from a powertrain tech forum in China by Toyota China R&D may coming in 2028-2030
The first table is a summary of Toyota's thermal efficiency. The black dots are the thermal efficiency of Toyota's mass-produced cars, and the red dots are the laboratory results.
The second picture shows that Toyota's best thermal efficiency in the laboratory is 47.5%, but it is achieved through lean combustion and fuel adjustment. However, the breakthrough Toyota showed today is that under ultra-lean combustion conditions, when lambda reaches 2.5, Toyota believes that it is possible to achieve an after-treatment system that does not require nitrogen oxides, while too high will lead to excessive exhaust temperature.
The biggest obstacle to lean combustion technology is the expensive nitrogen oxide after-treatment system. So 2.5 may really become the golden number for the next generation of models.
The first table is a summary of Toyota's thermal efficiency. The black dots are the thermal efficiency of Toyota's mass-produced cars, and the red dots are the laboratory results.
The second picture shows that Toyota's best thermal efficiency in the laboratory is 47.5%, but it is achieved through lean combustion and fuel adjustment. However, the breakthrough Toyota showed today is that under ultra-lean combustion conditions, when lambda reaches 2.5, Toyota believes that it is possible to achieve an after-treatment system that does not require nitrogen oxides, while too high will lead to excessive exhaust temperature.
The biggest obstacle to lean combustion technology is the expensive nitrogen oxide after-treatment system. So 2.5 may really become the golden number for the next generation of models.
A lambda of 2.5 means the engine needs to run at least 1.5bar (22psi) of boost to burn the same amount of fuel as a naturally aspirated engine about 20% more efficiently. That's a lot of stress for not a lot of power, and it requires 100RON gasoline to suppress knock which won't be available for mass adoption any time soon.
Meanwhile BMW is committed to I6 and V8 as well as lambda=1.0 (no lean burn = no power compromise).
https://www.autoblog.com/news/bmw-m-promises-six-eight-cylinder-engines-safe-euro7
https://www.autoblog.com/news/bmw-m-promises-six-eight-cylinder-engines-safe-euro7
mikeavelli
Moderator
- Messages
- 7,486
- Reactions
- 16,627
I just wish they weren’t so ugly.. kudos to them for the engines
maiaramdan
Expert
- Messages
- 1,836
- Reactions
- 1,423
What makes me sad is Toyota had multiple times BMW R&D budget!
Kelvin2020
Admirer
- Messages
- 853
- Reactions
- 1,972
Lexus Future Lineup Includes Supercar Speeds And An SUV That Could Replace Gas Giant | Carscoops
Besides its upcoming EVs, Lexus is expected to reveal several facelifted SUVs by 2028
www.carscoops.com
Hard to find anything positive from Lexus in the future. Tbh, nothing really excites me, maybe the refreshed GX coming up? Other than that, hardly anything.
F1 Silver Arrows
Expert
- Messages
- 2,566
- Reactions
- 4,151
One of the last ever things that a very special person told me was that there was supposed to be a BEV GX by the end of this decade. So maybe we can look forward to that lol.Lexus Future Lineup Includes Supercar Speeds And An SUV That Could Replace Gas Giant | Carscoops
Besides its upcoming EVs, Lexus is expected to reveal several facelifted SUVs by 2028
Hard to find anything positive from Lexus in the future. Tbh, nothing really excites me, maybe the refreshed GX coming up? Other than that, hardly anything.
Kelvin2020
Admirer
- Messages
- 853
- Reactions
- 1,972
“The 2025 edition is set to be another high-profile showcase. Lexus, which celebrates its 20th anniversary in Japan this year, will also take part. According to an interview with Lexus president Tsuyoshi Watanabe cited by the Asahi Shimbun and reported by Creative Trend, the company will make a “major announcement” at this October’s show.”
Hopefully this announcement will be something related to the LC/RC or LFA replacement, but it will probably end up being something along the lines of an electric bicycle.
“The 2025 edition is set to be another high-profile showcase. Lexus, which celebrates its 20th anniversary in Japan this year, will also take part. According to an interview with Lexus president Tsuyoshi Watanabe cited by the Asahi Shimbun and reported by Creative Trend, the company will make a “major announcement” at this October’s show.”
blackjack214
Fan
- Messages
- 33
- Reactions
- 72
Or better…hear me out….a hoverboard
Kelvin2020
Admirer
- Messages
- 853
- Reactions
- 1,972
I'm not sure what to make of the article. It seems to contradict itself:
"TOKYO, Sept 9 (Reuters) - Toyota Motor (7203.T), opens new tab will consolidate production of its luxury Lexus brand cars in the United States into a single location from two in the face of high tariffs imposed by the Trump administration, the Nikkei reported on Tuesday.
The move is aimed at strengthening U.S. production of petrol-electric hybrid vehicles while shifting some production of high-end Lexus cars to Japan, according to the report"
Are they consolidating the ES and TX to the Indiana plant, or are they moving all Lexus production to Japan? First it says consolidating to a single plant, then it says shifting production to Japan. If they're consolidating to Indiana, how does that save on tariffs? Or are both the TX and ES moving to Japan? Or are they saying they'll move ES production to Japan and retain TX production in Indiana (which isn't a consolidation in the U.S.).
Regardless, it seems there will be some production space opening up in Kentucky. Some added capacity for the RAV4 would be nice, especially with all models now being hybrid. Or, production space could open up for the new "Stout". A Toyota wild-card move would be to start producing RAV4s for the EU market in Kentucky as well, which is more viable now that the EU has 0% tariffs on U.S. imports.
from that article now:
ES will go to JDM, open space for more TX and other vehicles I guess.
Kelvin2020
Admirer
- Messages
- 853
- Reactions
- 1,972
Toyota announces special website unveiling "new project" Lexus, Toyota, TGR, Daihatsu emblems, and the Century's phoenix
global.toyota
wonder if this has anything to do with the upcoming Japan Mobility Show.
NEW PROJECT | ãã¨ã¿èªåè»æ ªå¼ä¼ç¤¾ å¬å¼ä¼æ¥ãµã¤ã
æ°ããã¸ã§ã¯ãå§åã¸ã«ã¦ã³ããã¦ã³ã詳細æå ±ã¯ãè¿æ¥å¬é
wonder if this has anything to do with the upcoming Japan Mobility Show.
mikeavelli
Moderator
- Messages
- 7,486
- Reactions
- 16,627
He posted a new message will be posted everyday