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Hydrogen Rotary Engine at 2003 Tokyo Motor Show
Submitted by SuperUser on Monday, October 13, 2003 - 7:58pm


Mazda RX-8 Hydrogen RE (Prototype)
This technological concept vehicle powered by the Mazda RENESIS hydrogen rotary engine is now undergoing running tests. The hydrogen version of RENESIS is the latest example of the company's efforts to satisfy the demand for both environment-friendliness and exhilarating performance. By making the most of the unique rotary-engine technologies, Mazda was able to develop this powerplant as one proposal for alternative-energy vehicle technologies aimed at a future hydrogen-based society.



In addition to direct hydrogen injection into the intake chambers via two electronically-controlled injectors per rotor, the Mazda RX-8 Hydrogen RE features a dual-fuel system allowing one-touch switching between either hydrogen or gasoline, promoting the car's versatility as a hydrogen fuel infrastructure is developed.




Other environmental-friendly features applied to the vehicle include a plant-based plastic for interior parts and an application of three layer wet paint system. Mazda is also presenting advanced technologies including a hybrid system with electric torque assist and start-stop technology, and a turbocharger with electric motor assistance-technologies that will contribute to future enhancement of hydrogen rotary engine performance.

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subject:
Propane compatible?
author:
No Rotor
date:
December 31, 1969 - 4:00pm
Just curious to know how the Renesis might handle propane and wondering if Mazda is at all comsidering offering a propane/gasoline version of the Renesis as an alternate fuels or low emissions vehicle?
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subject:
No title supplied
author:
No Rotor
date:
December 31, 1969 - 4:00pm
Awesome! Let's review again why the rotary is so well suited to hydrogen injection. It has to do with a cooler combustion chamber, maybe other reasons, correct?
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subject:
Is it real?
author:
No Rotor
date:
December 31, 1969 - 4:00pm
Is this just a mock up at the moment? Anyone have any economy/performance figures?

Ciaran.
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subject:
Justa mockup
author:
No Rotor
date:
December 31, 1969 - 4:00pm
I have heard engineers talk about it running, so it is a working prototype.

In terms of performance numbers, when running on H2, it pumps out about 110PS or around 105Hp. Gas Powered is around 210HP (4 port motor)

I don't have information on what the turbo charged model makes.
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