Quote:
Originally Posted by Old Mechanic
I was talking about Mazdas sky-activ gasoline engine with multiple injections, which is gasoline and spark ignited. Preignition is impossible when you only introduce 20% of the total amount of fuel injected during each combustion stroke. They also stop the engine in a specific position so they can restart it without any other components to accomplsih stop start.
Not sure about the piezo electric statement since transonics design is the injector. I think the operating pressure at 30k is correct. The fact that Caterpillar has decided to support them is huge with an 80 billion corporation with worldwide markets providing the r&d funding for further refinement to address the issues you raise. Most inventions are rarely practical without further refinement.
As far as withholding patent applications, I'm sure you know the history of Bell's telephone patent which preceeded his competitors patent by 2 hours. To assume there will be no competitor who is following the same pathway risks loosing the opportunity, precisely what happened to Bell's competitor (the loosing the opportunity part). I would prefer to get my Patent then spend the time period of protection to obtain further patents for refinements and that is something I will not discuss or reveal.
regards
mech
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You are correct about the Mazda SkyActiv System. It uses multiple hole injectors but I am not seeing where the gasoline engine uses multiple injection events. I am looking at the Mazdausa.com website. Digging up the Greencarcongress.com summary of the Mazda report to the JSAE in 2011 states that one parameter to achieving their goals was:
"The combustion duration was also reduced. Faster combustion shortens the time the unburned air-fuel mixture is exposed to high temperatures, which enables normal combustion to conclude before knocking occurs."
If you can guide me to a reference for a multiple injection event, I would be glad to digest the info.
As to patent withholding and it's dangers, I will have to trust Legal about that. In the past, I have seen a battery of seemingly unrelated patents filed at one time. I suppose there is a strategy to it. But, it is beyond my simple agrarian upbringing.
And, I do hope Transonic succeeds. I can work around their success. Their patents relate to their system of heating the fuel before injection at several thousand PSI - not the 30,000 PSI some current systems are using. The injector tip heater is just the last push to achieve that critical "fourth phase" of matter.