Lexus changes tack on transmissions
#1
Lead Lap
Thread Starter
#2
Lexus Champion
I would not consider either the 10-speed automatic transmission or the addition of the 4-speed automatic on the back-end of the Lexus Hybrid Drive electronic-CVT to be "changing tack". I consider them to be an evolution rather than an revolution.
But then, so few of these enthusiast websites really understand the eCVT/Power-split Device (PSD) hybrid transmission that Toyota uses; it is NOT a CVT in the normal, belt-and-pulleys sense.
But then, so few of these enthusiast websites really understand the eCVT/Power-split Device (PSD) hybrid transmission that Toyota uses; it is NOT a CVT in the normal, belt-and-pulleys sense.
#4
Lexus Fanatic
iTrader: (20)
#5
Originally Posted by DrivelineNews
Lexus, Toyota’s premium brand, will introduce its first stepped transmission system with the hybrid version of its latest and most prestigious model, the LC 500 luxury coupé.
People just don't realize that the stepped transmission has been in the Lexus GS450h since 2005. The LC500h simply bumped the 2AT in the GS450h to a 4AT one that's all. That's on top of the eCVT that exists in all Toyota/Lexus hybrids of course.
#6
Lexus Test Driver
Not quite, the GS450h and LS600h add a second planetary gearset to the PSD to handle more torque and for better high speed efficiency. The LC500h adds an actual 4-speed AT to the PSD for a more direct feel and better throttle response.
The CVT-like rubber band effect has been a big complaint on PSD hybrids because road speed and engine speed aren't linear. Toyota hybrids don't use a belt and pulley CVT but the feel is similar; why they keep calling it an eCVT is anyone's guess.
The CVT-like rubber band effect has been a big complaint on PSD hybrids because road speed and engine speed aren't linear. Toyota hybrids don't use a belt and pulley CVT but the feel is similar; why they keep calling it an eCVT is anyone's guess.
#7
Not quite, the GS450h and LS600h add a second planetary gearset to the PSD to handle more torque and for better high speed efficiency. The LC500h adds an actual 4-speed AT to the PSD for a more direct feel and better throttle response.
The CVT-like rubber band effect has been a big complaint on PSD hybrids because road speed and engine speed aren't linear. Toyota hybrids don't use a belt and pulley CVT but the feel is similar; why they keep calling it an eCVT is anyone's guess.
The CVT-like rubber band effect has been a big complaint on PSD hybrids because road speed and engine speed aren't linear. Toyota hybrids don't use a belt and pulley CVT but the feel is similar; why they keep calling it an eCVT is anyone's guess.
they call them eCVT since it is easier to understand... they also feel different from reg cvts since electric motor will give instant power while with traditional cvt in small engined car traditionally sucks since you get a lot of noise but have to wait for power to come.
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#8
Lexus Champion
Originally Posted by DrivelineNews
Lexus, Toyota’s premium brand, will introduce its first stepped transmission system with the hybrid version of its latest and most prestigious model, the LC 500 luxury coupé.
Lexus, Toyota’s premium brand, will introduce its first stepped transmission system with the hybrid version of its latest and most prestigious model, the LC 500 luxury coupé.
People just don't realize that the stepped transmission has been in the Lexus GS450h since 2005. The LC500h simply bumped the 2AT in the GS450h to a 4AT one that's all. That's on top of the eCVT that exists in all Toyota/Lexus hybrids of course.
they call them eCVT since it is easier to understand... they also feel different from reg cvts since electric motor will give instant power while with traditional cvt in small engined car traditionally sucks since you get a lot of noise but have to wait for power to come.
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