Will1991
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@LexsCTJill , yes you have, look to my last picture, all ac controls are buttons.
@LexsCTJill , yes you have, look to my last picture, all ac controls are buttons.
There is no dedicated ON/OFF AC button like my CT had or the IS. You have to use the remote touch.
As an engineer, I appreciate technology in cars. But when the "technology" that auto enthusiasts now obsess over is an infotainment screen (and not the engine or transmission), I am thinking that something has gone absolutely wrong.
Does the resolution of the infotainment screen improve driving quality? Does it make the car handle better? Does it improve fuel efficiency? No? So why the obsession with it?
I have the navigation system in my ESh but cannot stand to have the bright screen with constantly moving images in my peripheral vision, so I have set a home screen with dark, static graphics that does not bother me when I am driving. When I am driving, I prefer to be driving, not focusing on an infotainment screen.
I hope you're right. It would be Toyota's first turbocharged hybrid. Then again, I keep remembering that when the Dynamic Force engines were announced, the graphics hinted at a Dynamic Force V8...I believe the new “600h” will be 3.5L TT V6 + next gen hybrid powertrain: ~450hp/500+lb-ft of torque.
I find a bit intriguing a turbo hybrid from Toyota, running a Atkinson cycle makes for low exhaust pressure which doesn't work very well for turbos... I even don't know if turbo-ing a Atkinson will not decrease efficiency on low-medium engine loads (were the engine spends most of the time)... Unless they return to a Otto cycle, but then the thermal efficiency is going to suffer...
Both Atkinson or Otto turbo hybrid would have a problem, hybrids have a lot of moments that go directly from engine off to high load, turbo lag and eCVT "rubber" effect... Acceleration feel should be a concern...
Another option would be a Miller cycle, but that requires a supercharger, reducing some efficiency from parasitic losses...
From my point of view, maybe a more powerful battery and electric engine would yield a better result overall...
I'd been thinking the exact same thing, although others suggest it might just be Toyota badging for the truck-tuned version of the V35A-FTS Dynamic Force twin turbo V6.@Joaquin Ruhi , the Dynamic Force V8 might be the "i-Force MAX" trademarked some weeks ago.
I hope you're right. It would be Toyota's first turbocharged hybrid. Then again, I keep remembering that when the Dynamic Force engines were announced, the graphics hinted at a Dynamic Force V8...
I find a bit intriguing a turbo hybrid from Toyota, running a Atkinson cycle makes for low exhaust pressure which doesn't work very well for turbos... I even don't know if turbo-ing a Atkinson will not decrease efficiency on low-medium engine loads (were the engine spends most of the time)... Unless they return to a Otto cycle, but then the thermal efficiency is going to suffer...
Both Atkinson or Otto turbo hybrid would have a problem, hybrids have a lot of moments that go directly from engine off to high load, turbo lag and eCVT "rubber" effect... Acceleration feel should be a concern...
Another option would be a Miller cycle, but that requires a supercharger, reducing some efficiency from parasitic losses...
From my point of view, maybe a more powerful battery and electric engine would yield a better result overall...
Doesn't every other car maker only do HEVs and PHEVs in combination with turbocharged ICEs, including supercars?
This is incorrect. All modern 'Atkinson cycle' engines use simulated Atkinson cycle by using the VVT mechanism to adjust the intake charge to equilibrate with ambient air. All these engines operate in Otto mode at high load and rpm (e.g. WOT) to increase torque. The Atkinson cycle region is defined on the engine mapping. Hybrid engines (FXS) have wider Atkinson region and higher expansion ratio than the regular version (FKS).I find a bit intriguing a turbo hybrid from Toyota, running a Atkinson cycle makes for low exhaust pressure which doesn't work very well for turbos... I even don't know if turbo-ing a Atkinson will not decrease efficiency on low-medium engine loads (were the engine spends most of the time)... Unless they return to a Otto cycle, but then the thermal efficiency is going to suffer...
This is exact opposite of reality. Hybrid system actually masks turbo lag via torque-filling from the motor. The MG1 could also rapidly ramp up engine rpm to get it into boost in a power-split hybrid system similar to doing a 'clutch-kick' in a manual car to rapidly spool up.Both Atkinson or Otto turbo hybrid would have a problem, hybrids have a lot of moments that go directly from engine off to high load, turbo lag and eCVT "rubber" effect... Acceleration feel should be a concern...
The term 'Miller cycle' is used very loosely in the industry to refer to both turbocharged and supercharged Atkinson cycle engines. The textbook definition is out of date.Another option would be a Miller cycle, but that requires a supercharger, reducing some efficiency from parasitic losses...
You could move those discussions to the powertrain thread, which I will be making a major update to.
I wish I could edit really old posts. I want to change the first three posts since they are now outdated information (and very wordy). The latest update is based on their 2018 report on powertrain development. They should be releasing another report when the next new ICE launches (probably the 2.4T, or V8TT).
The first image is about engines, transmission, and hybrid systems:
View attachment 3903
The second part is about their new 4WD/AWD systems:
View attachment 3902
Could admin replace post #2 with this and delete #3?
This is incorrect. All modern 'Atkinson cycle' engines use simulated Atkinson cycle by using the VVT mechanism to adjust the intake charge to equilibrate with ambient air. All these engines operate in Otto mode at high load and rpm (e.g. WOT) to increase torque. The Atkinson cycle region is defined on the engine mapping. Hybrid engines (FXS) have wider Atkinson region and higher expansion ratio than the regular version (FKS).
This is exact opposite of reality. Hybrid system actually masks turbo lag via torque-filling from the motor. The MG1 could also rapidly ramp up engine rpm to get it into boost in a power-split hybrid system similar to doing a 'clutch-kick' in a manual car to rapidly spool up.
Found this on instagram, LS Facelift?View attachment 3904