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Posted in these groups: 
Technology
Automotive
Technology Automotive
Posted >1 y ago
Responses: 2
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I have long been a fan of Mazda. I owned an R4 with the Wankel rotary engine. It was amazingly powerful and smooth. Sadly, it wasn't fuel efficient (especially the way I drove it). But when introduced, Americans weren't really worried about fuel economy. It was still cheap and plentiful. Later, I owned a Mercury Tracer with a Mazda designed 4-cyl DOC engine that was amazingly powerful for such a small plant. The best 4-cyl I ever drove. This new innovation should work out well inasmuch as other auto makers are going with small 4-cyl turbo charged engines in large vehicles. Sure, it's fuel efficient, but turbos are notoriously short lived and putting that much power out of a small engine is bound to over stress main and connecting rod bearings.
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Sgt Wayne Wood
You are the only wankel owner i've ever encountered... thanks for the thumbnail sketch
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CPT Jack Durish
Sgt Wayne Wood - The hardest lesson I ever learned with the Wankel was NEVER EVER POWER SHIFT with it. The typical piston engine will "pause" at max RPM just long enough for you to shift gears and let the clutch back out. The one and only time I tried it with the Wankel, I blew up my clutch plate. Indeed, the service manager called and warned me never to try that again. I played innocent but he knew what I had done. They were picking pieces of my clutch plate out of the bell housing. They estimated that the engine was turning about 18,000 rpm by the time I released the clutch!
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This video explains the working of HCCI Engine (homogenous charge ignition engines). This engine is a combination of compression ignition engine (diesel engi...
Will be great if it works after it is mass produced
https://www.youtube.com/watch?v=B8CnYljXAS0
https://www.youtube.com/watch?v=B8CnYljXAS0
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CPT Jack Durish
They are obviously using extremely high compression. The only time I saw that attempted on a gas engine, the head gaskets were blown out on the first couple rpm's. I have to wonder at the stresses they are encountering and how their dealing with them
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LTC Orlando Illi
PO1 John Crafton - my concern is the machining of the head and the valve seats. Not sure what grade steel that they will be using - but a high carbide / tungsten alloy may be in the mix.
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