model of Toyota Hybrid Synergy Drive

This footage was recorded on Nov 29, 2007 at a Hybrid event held by Toyota Sunnyvale in Sunnyvale, CA, USA.

It uses a planetary gear to divert power. Power can come from the internal combustion engine (ICE = blue handle) or the Motor Generator 1 (MG1 = yellow disc) and Motor Generator 2 (orangle handle). MG2 drives the wheels directly (represented by cranking the orange handle before the reduction gears) or the momentum of the car pushes the wheel to spin MG2 to recapture energy during braking (represented by cranking the black handle after the reduction gears). MG1 (yellow disc) can spin the planetary gear (green) while the wheels (black) and MG2 (orange) are stationary, which in turn spin the ICE (blue) before gasoline is injected to the ICE. That pre-spinning of the ICE to operating RPM allows the ICE to be started and shut off at will with reduced air pollution concern (represented by cranking the blue handle, it should only turn in one direction, the model is flawed). MG1 (yellow) can spin backward or forward to redirect power to the wheels (this model does not have a crank handle for the yellow disc, a model flaw again because MG1 must be spun actively to control the output of the HSD).

Visit http://www.wind.sannet.ne.jp/m_matsu/prius/ThsSimu/index_i18n.html to play with a simulator.

Category:

Autos & Vehicles

Tags:

• Toyota
• Prius
• HSD
• hybrid
• synergy
• drive
• model
• 豐田混合動力模型
• cplai

[maZZiveAttack]

Ok. How is toyota planning to use the drive? With what fuel source? Can you tell me

[cplai]

@maZZiveAttack The model in this video shows how the transmission in the Prius works. The Blue crank represents the Gasoline Engine, the Orange crank represents the Electric Motor/Generator. The current Prius is a Gasoline/Electric hybrid. However, it is possible to replace the Gasoline engine with an hydrogen engine in the future. But Toyota has no plan to do that yet.

[maZZiveAttack]

Run your car on hydrogen!

[cplai]

@maZZiveAttack The drive train design is quite independent of what fuel to use. The video only shows the transmission. The engine can be modified to run on hydrogen without changing this transmission.

[banstaman]

So it's not a real CVT? I mean it still has a planetary gear set.

[cplai]

@banstaman It depends how you define CVT. If CVT means achieving different gear ratios for different levels of mechanical advantage in a continuous manner then this is NOT CVT because there is only one gear ratio at any speed. If CVT means that you achieve various speeds without that jerking sensation during each transition in the transmission, then this delivers various speed smoothly because it NEVER shift gear. Same gear for all speed, including reverse.

[emforty2]

toyota technology beyond average brains to understand !

no wonder toyota is NOW #1 unseating GM on a bad economy

[Me102288]

@tdukhovny ooh I can answer these for you..

1. electrolysis of water splits water into its 2 parts Hydrogen 1 part oxygen, you save the H2 and breath the Oxygen.. k?

2. Hydrogen is safer then gasoline because if the tank ever ruptures the hydrogen will convert back to water at a rate higher then full burst rate of the tank. test results at Nasa on the BMW Hydrogen 7.

3 Obviosly water.

4 240 watts per gallon of H2, aprox 3x energy of gasoline.

oh, 35psi H2 turns to liquid.

[Me102288]

@maZZiveAttack already am, cheers mate! :-)

[gettingahandle]

save gas... fart in a bottle

[tdukhovny]

@maZZiveAttack ... still, bro, you have not addressed any problems with the hydrogen fuel. the "rather" approach is only valid if you have the option -- option supported with solid technology. the latter is at this time only a wishful thinking.

here's one -- gratis -- for you: diesel with the hybrid drive. imho, 100 mi/hr possible.

-toly

[maZZiveAttack]

@tdukhovny Yes. I'm ready. I'd rather be using hydrogen than petrol.

[tdukhovny]

@maZZiveAttack

you say hydrogen, don't you?

four problems with it:

1. where are you going to get hydrogen?

2. are you ready to carry several tanks of VERY EXPLOSIVE GAS at VERY HIGH pressure on your car?

3. where is the infrastructure to fuel cars with your agenda gas?

4. carefully calculate the energy input to get hydrogen -- in order to have the positive energy balance at the end.

othervise, good idea.

good ideas are especially good to pave the road to hell -- someone said that.