Interesting review of different gearboxes

[PaulWhitt20]

This was posted on another car forum but I thought it may be interesting here also.

 

http://autoexpert.com.au/buying-a-car/transmission-comparison-manual-auto-dual-clutch-cvt

 

Warning . Some of the language in it is a bit colourful.

[Britprius]

Pity he does not mention the fifth type of transmission that uses non of the principles of the other four. The ECVT no belts, no brake bands, no cllutches, no torque converter, and no gear changes even for reverse.

John

[PaulWhitt20]

Is the ecvt different to a cvt with an electric motor on then?

[Zotto]

Totally different.

[Britprius]

18 hours ago, PaulWhitt20 said:

Is the ecvt different to a cvt with an electric motor on then?

Very different. The ECVT works by using two electric motors that can also act as generators, controlled by a computer. All the gear ratios including reverse, and neutral are the same. In fact the same gear.

Look at the link below scrolling down to the bottom of the page. Move the sliders for MG2, and the ICE (internal combustion engine) in the monograph to see how the engine and electric motors work together at various speeds and directions. The car moving without the engine running, engine running with car stationary, and mg1 (motor generator one) changing direction dependent on car and engine speed.

The yellow ring drives the wheels through the differential, and is connected directly to MG2. The blue gear is connected directly to MG1. This also acts as the starter motor. The orange gears are driven in a circular motion by a carrier shown faintly in the background connected directly to the engine.

In reverse the movement is purely electrical. If the engine runs it reduces the power available to the wheels because it turns in the wrong direction.

 This is for a Prius but the system used in the Lexus is the same. The Prius, and the CT200H use the same engine, and transmission.

 http://eahart.com/prius/psd/ .

John

[Leigrati]

Dude, they are posted https://autoexpertguides.com/best-torque-wrench/ some information about you :)