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Gearhead
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Discussion Starter #1
LeftLaneNews said:
The electric supercharger would provide boost at low rpm, while the turbos would take over at higher engine speeds.

Technical drawings published by the United States Patent and Trademark Office (USPTO) suggests Mazda is working on a high-performance engine unlike any it has built in the past.

Uncovered by Road & Track, the patent application includes a diagram of an engine fed with two turbochargers and an electric supercharger. The text explains the supercharger would provide boost at lower revolutions, while the two turbos would take over at higher engine speeds.

The application doesn't mention where the electric supercharger would get its power from. Road & Track speculates it might be fed by Mazda's i-Eloop system, which captures the energy generated while braking and feeds it to an on-board supercapacitator. From there, it's dispatched to electric components like the A/C, the sound system, and the headlights.
The supercharged and twin-turbocharged setup could be used to power both gasoline- and diesel-burning engines. That doesn't necessarily mean it will, though.

Read more: Mazda patent hints at twin-turbocharged supercharged engine - LeftLaneNews

Moderators, thanks for moving this into our proper section.
 

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Super Moderator
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6,141 Posts
on going discussion here:
http://mazda3revolution.com/forums/...nce/206634-twin-turbo-supercharged-motor.html

Actually, if you read through the patent applications:sleeping:, this is whole thing is about an advanced intercooler system that is intended to be installed on a 4 cylinder 4 stroke diesel engine. The text specifically mentions the engine is a diesel, along with using light oil for fuel and having a DPF in the exhaust stream.
The motor described in the patent application is not a real twin turbo either. It has a single small scroll turbo that spools up quickly for low rpm operation and a full size turbo for mid and higher rpm operation, both installed in the same intake and exhaust streams. The small supercharger is there to take up the slack on the low end when neither turbo is making boost. All of this is to eliminate turbo lag apparently.
Also, nobody from Mazda has ever said how big this motor might be or what sort of power it might make. It has been speculated elsewhere that 400+ hp is possible, but chances are its a smaller motor designed to be in line with Mazdas CAFE numbers.
 

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VW designed something similar with their twin charged engines back in 2006/7. The engine was jerky and unreliable. I hope Mazda would do better.
 

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Super Moderator
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VW designed something similar with their twin charged engines back in 2006/7. The engine was jerky and unreliable. I hope Mazda would do better.
Just to reiterate, this is not a patent for an engine design per se. The patent applications are for cooling mechanisms for an intake system. The engine design is incidental.

 
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