Tuesday, September 26, 2023

We loved our Mazda RX-7

 

 

So much so, that we had two of them, back-to-back way back when.  The rotary engine was fun to drive but there were production issues with engine wear, fuel economy, and emissions.  Mazda eventually moved on from it.

 

Now there is a new rotary concept.  It’s called the Astron Omega 1.  It’s not from Mazda, it’s from somebody else.  The designers figured out that all four parts of a four-cycle engine don’t have to happen in the same place.  Separate them into intake/compression in one part, move the air to the next section, and perform the combustion/exhaust functions there.  Both parts run at the same time, so it’s intense like a 2 cycle engine, but without the lubrication and emissions issues.

 

Front view.

 


 

Side view.

 


 

Here are some old guys talking about how it works.

 

https://www.youtube.com/watch?v=_LkkjYParp4&t=126s

 

They talk about other stuff too.  The rotary engine part starts at 6:30.

 

It’s small.  The model they’re showing here weighs 35 pounds, turns at 25,000 RPM, and puts out 160 horsepower with 60% efficiency.  (That’s a lot better efficiency than a piston engine.)  And it can run on hydrogen too.  I guess that’s all on computer simulations though.  It’s early in development.  Mazda, are you listening?  RX-9?

 

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