Lexus GS350 (470bhp) GT and LS500 (600bhp!!!)

[JYDog]

The high torque from batteries is probably why it has such a high MPG(city). You see on cars that gets displacement increases, the mileage gets better as a effect of the extra torque.

 

[FrustratedUser]

Originally posted by: SuperTool
HP is torque*rpm. what's the torque curve for electric motor at higher rpm?

The electric motor has the same torque in the whole rpm range (with some small variations). That's what makes them so cool.

 

[Don Vito Corleone]

Originally posted by: FrustratedUser

The electric motor has the same torque in the whole rpm range (with some small variations). That's what makes them so cool.

True true. This is why I think hybrid technology does potentially make a lot of sense for a performance car. I believe, and hope, we are still in the infancy of the use of hybrid drivetrains. Even if mileage is not a primary focus, I always prefer designs with elegant engineering, and I love a lot of aspects of the ways hybrids conserve power.

 

[bolido2000]

Originally posted by: BigSmooth
Big-engined hybrids would be cool if they actually end up building them.

It's not an idea. They are already working on them.

 

[ElFenix]

Originally posted by: FrustratedUser

Originally posted by: SuperTool
HP is torque*rpm. what's the torque curve for electric motor at higher rpm?

The electric motor has the same torque in the whole rpm range (with some small variations). That's what makes them so cool.

false!

 

[Goosemaster]

Originally posted by: Eli

Originally posted by: Skoorb

Originally posted by: maziwanka
can you just add hp between electric motor and the regular motor like that? what kind of performance should we expect these cars to have?

You could if the torque for the gas engine was at very low RPM, since electrics are very torquey at low speeds themselves, but I'm sure that with gearing you could deliver their torque wherever you wanted.

I still call shens on a car making 60 mpg with that number of horses.

eh.. I think you're all thinking about it too hard.

HP is torque.

They add the HP of the electric motor together with the HP of the engine together currently, so what's the difference? They're just going to be using higher performance versions of each.

I, too, question the 60mpg figures though... :Q We'll see.

THink of it as an on demand supercharger.


IF the car were to use gasoline fuel to power the electric motor, as is common today, as indirect as it may bethere would be a decrease in MPG> WHat I believe they are doing is using wasted energy already available. FOr example, breaking has a great deal of potential in the convservation of energy in the automkotive system.

THe main difference between these hybrids and the prius, is that Prius type hybrids are used only to increase MPG. If these EM's can be activated at higher RPM's via a myriad of extra gears and such, the conserved energy via braking + a coil will mean "free turbo power" as it will not use up anyu more gass.


It is all about keeping energy in the system. Not only will THis save gas like hybrids due today, but it will also take advantage of large amount of energy wasted in the current implementation.

Braking a 2000-3000+ lb car from 60mph is a LOT of free energy


Kudos to toyota for being smart©

 

[Goosemaster]

Originally posted by: ElFenix

Originally posted by: FrustratedUser

Originally posted by: SuperTool
HP is torque*rpm. what's the torque curve for electric motor at higher rpm?

The electric motor has the same torque in the whole rpm range (with some small variations). That's what makes them so cool.

false!

Therefore they have to add an addtitional set of gears coupled with a powerful EM to have it spinning slowly at all times

 

Wow, after reading this thread I now see how fvcking clueless most of you are.

 

[Eli]

Imagine if they hooked the motor to a CVT and then through the normal transmission gears.

 

[IshmaelLeaver]

There is no way both motors will be applying all of their resources to the drivetrain at the same time. Maybe it could be modded to do so, but it's not going to come from the factory like that.

 

[Eli]

Originally posted by: ElFenix

Originally posted by: FrustratedUser

Originally posted by: SuperTool
HP is torque*rpm. what's the torque curve for electric motor at higher rpm?

The electric motor has the same torque in the whole rpm range (with some small variations). That's what makes them so cool.

false!

While his wording is indeed false, the overall point he was trying to make is that a DC electric motor makes peak torque at 0RPM, which is quite different from the torque curve of an internal combustion engine.

 

[IshmaelLeaver]

Originally posted by: Eli
Imagine if they hooked the motor to a CVT and then through the normal transmission gears.

You made my brain hurt.

 

[Eli]

Originally posted by: IshmaelLeaver
There is no way both motors will be applying all of their resources to the drivetrain at the same time. Maybe it could be modded to do so, but it's not going to come from the factory like that.

Obviously not.

Is that 60MPG figure supposed to be combined, or city, or highway, or what?

Anyway.. Maybe the electric motor handles say 0-45 and the engine kicks in for highway speeds?

Who knows..

 

[z0mb13]

how can they simply add the two HPs together??

 

[Eli]

Originally posted by: z0mb13
how can they simply add the two HPs together??

....

If you somehow had a car with 2 engines.. say, one for each set of wheels.. to accurately represent the power present, you would add the power of both of them together.....

no?

 

[IshmaelLeaver]

Originally posted by: Eli

Originally posted by: z0mb13
how can they simply add the two HPs together??

....

If you somehow had a car with 2 engines.. say, one for each set of wheels.. to accurately represent the power present, you would add the power of both of them together.....

no?

Only if one motor powered the left wheels and the other powered the right.

 

[Deleted member 4644]

Originally posted by: IshmaelLeaver

Originally posted by: Eli

Originally posted by: z0mb13
how can they simply add the two HPs together??

....

If you somehow had a car with 2 engines.. say, one for each set of wheels.. to accurately represent the power present, you would add the power of both of them together.....

no?

Only if one motor powered the left wheels and the other powered the right.

Wouldn't it depend largely on how the gearing is setup?

 

[Howard]

Originally posted by: Eli
Imagine if they hooked the motor to a CVT and then through the normal transmission gears.

Why use gears when you've already "geared" the torque output?

Anyways, not many CVTs can handle that much torque.

 

[Goosemaster]

Originally posted by: SampSon
Wow, after reading this thread I now see how fvcking clueless most of you are.

Even so, you let me speak knowing this


Please educate me on the truth the. I actually want to know the details of how this thing will be implemented.


Also, even if I was wrong, that was what I want it to be... ...

 

Originally posted by: Goosemaster

Originally posted by: SampSon
Wow, after reading this thread I now see how fvcking clueless most of you are.

Even so, you let me speak knowing this


Please educate me on the truth the. I actually want to know the details of how this thing will be implemented.


Also, even if I was wrong, that was what I want it to be... ...

Honestly Ive had too many beers to get into it.

Basically, the electric motors start the car from motion with an amazing amount of torque, as their torque/power curve dies off and passes its peak power the combustion motor kicks in and takes over producing the power for the awd system.

 

[Mani]

File this in the Too Good to be True category.

 

[toant103]

Originally posted by: Viper GTS

Originally posted by: Kenazo

Things look set to get highly charged at Toyota. The company intends to enter the performance saloon market with a family of Lexus models that will all feature hybrid technology.

HUH?

Saloon = Sedan

Damn Brits.

Viper GTS

hahah

 

[ElFenix]

Originally posted by: Eli

Originally posted by: ElFenix

Originally posted by: FrustratedUser

Originally posted by: SuperTool
HP is torque*rpm. what's the torque curve for electric motor at higher rpm?

The electric motor has the same torque in the whole rpm range (with some small variations). That's what makes them so cool.

false!

While his wording is indeed false, the overall point he was trying to make is that a DC electric motor makes peak torque at 0RPM, which is quite different from the torque curve of an internal combustion engine.

i don't know how you could get that intent from those words

 

[thomsbrain]

regarding the gas mileage, it's not that surprising, and here's why:

keep in mind that with the electric motor putting out 170-200 HP on it's own (and max torque at zero RPM), you'll never touch the gas motor during leisurely driving except to charge batteries. the only time the engine will have to be involved in moving the car is when you really let it rip. it's not like the prius where the electric is so puny that you have to have the gas going except in parking lots. 200 HP is plenty to move even a large sedan at freeway speeds. the gas motor will mostly work as a generator except for when you're tearing Corvettes new buttholes.

 

[OS]

Originally posted by: ElFenix

Originally posted by: FrustratedUser

Originally posted by: SuperTool
HP is torque*rpm. what's the torque curve for electric motor at higher rpm?

The electric motor has the same torque in the whole rpm range (with some small variations). That's what makes them so cool.

false!

Yeah serious, this is a supercommon misconception among casual car enthusiasts. How much torque an electric motor puts out depends on many different factors, AC/DC power, winding/armature type, induction type, blah blah. I had a class on electric machinery and there are a lot of considerations and quite frankly I don't remember seeing ANY electric motor with a completely flat torque output and I saw many, many torque graphs for a variety of electric motors.

In fact, if you take his statement of;

"The electric motor has the same torque in the whole rpm range (with some small variations)."

You can apply that to almost any modern, semi respectable gasoline engine. example, accord v6 dyno