neit_jnf

Got you all excited didn't I?

It's the hydrogen powerded renesis, it can use either gasoline or H2. It's a 4-port motor with an "electric motor assist" turbocharger. It looked like a regular turbocharger to me with a turbo exhaust manifold and all, at least we know Mazda has this!

neit_jnf

1

neit_jnf

What is this I see? :D

neit_jnf

Electric?? It looks normal to me, turbo exhaust manifold, oil lines, etc.

neit_jnf

I was so excited to be at the show that I forgot to take pictures of the whole thing... Gas tank, H2 pressure tank, H2 injectors, very interesting!

neit_jnf

cat

neit_jnf

Car looks exactly the same as stock

neit_jnf

side, chromed wheels!

RX-Nut

Whoa... things that make you go HMMM..

SA22C

Too bad the H2 rotary only puts out ~100 hp. Still though, it's a neat design and a step in the right direction. If the rotary engine is going to survive, it will be in hydrogen form.

racerdave

SA22C... with the current fuel economy of the Renesis on gas, I'd have to agree with you.

But if they can make Hydrogen work, that would be sweet indeed!

Maybe they should add another rotor.

Gyro

The turbocharger for the Hydrogen design is almost mandatory to make it work in the real world. The prototype lacks power with the new fuel type and needs positive pressure in the intake to bring HP up to "usable" levels.

Its much like the analogy with diesel engines.
Diesels tend to be high in torque but low in "get up and go". That all changes with a FI.

Take Fords "Power stroke" 7.3 liter diesel (made by International).
The large displacement along with natural characteristics of diesel fuel make that engine a power house for towing and durability. However its the Turbo that makes that engine have more midrange power for around town driving.

neit_jnf

bump :D

greese

WOW! That's awesome. White paint!



greese

wakeech

...the turbo is a wee-bit wimpy for the application, dontcha think?? if 100hp is all they're making, add more boost... espeically with the lag-reducing electirc assist on there, why not bump up the compressor size, and especially the A/R for more efficiency at higher output?? i don't see why it should be so small...

Gyro

I'm far from an expert on Hydrogen fueled internal combustion engines......but

I'm sure it isnt just that simple.

Our conventional thinking regarding adding power may not apply in all areas regarding Hyrdrogen fuel.
Adding more air under pressure with FI could have more limitations than gasoline or diesel engines.

maybe also the hydrogen likes high compression......greatly limiting the amount of boost that safely can be applied.

deadrx7conv

I read that it was dual fuel(user selected). Drive like hell on gas(250hp) and switch to hydrogen(100hp) when in the city or stuck in traffic to help prevent smog.
A Toyota synergy hybrid drive would do wonders to the Renesis regardless of what fuel is being used.

Mr M

I'm still trying to figure out the concept behind the electric-motor turbo charger. Does anyone know who the manufacturer is - Bosch? I would love a cross-section drawing of it. Maybe the hydrogen doesn't spin it up fast enough so they have the motor - which makes it a supercharger, not a turbocharger. Freaky!

neit_jnf

From 1000 to 3000 rpm the electric motor spools the turbocharger, from 3000 rpm up the exhaust gases have enough energy to drive it. The electric assist eliminates the turbo lag.