This is likely to be what gets the automakers to the 54 mpg 2025 limit. If automakers are foreward thinking enough, they can trumpet they got there 10 years early, too.
Still, this takes away from the goal of weaning off fossil fuels. The innovation that DOES make a storage battery approach the power density of liquid fuels is what is needed.
This sounds a lot like our two stroke engine, except for being more complicated and having six valves. Clearly it allows much more variation in timing of all the several parameters like when to start the air intake portion and when to inject the fuel. Depending on the timing requirements, the same functions could possibly be delivered by a standard two-stroke engine, even better if it had direct fuel injection. Such an engine might possibly also fare better in emissions testing, although efficiency and low emissions seldom peak at the same time. But as the split stroke is compared to a two stroke, it is clear that they are similar.
Seems to me that any kind of technology that has the potential to advance the cause of fuel efficiency is to be taken seriously. Glad to hear that analyst groups and automotive OEMs have this on their radar screens even if it's some time out before we see the actual technology in production vehicles.
I think this is going to be a good technology to watch. With the government mandating higher fuel efficiencies and "good enough" battery technology still a few years away, this might be the technology that gets us there.
Proving this works in high output engines will be an important factor. It does have some interesting characteristics, for one, the hot side of the engine stays hot and the cool side does not heat up too much. This is in contrast to the Otto cycle characteristics.
I would be very curious as to just why the retardation of the spark helps so much in this design compared to the Otto cycle. And another obvious question to me is if the split cycle is amenable to creating a split Diesel cycle? Would there be any benefits in that?
Andrew Morris designed a circuit that could detect a stroke victim's groan and convert the sound into a signal so caregivers would know when help was needed.
New disc magnet motors fit into the design trend of stepping up to closed loop performance while maintaining the cost advantage of stepper motor technology.
At the Design News webinar on June 27, learn all about aluminum extrusion: designing the right shape so it costs the least, is simplest to manufacture, and best fits the application's structural requirements.
On April 21, NASA launched a novel project, putting into orbit three satellites that employ an off-the-shelf commercial smartphone as the control system.
From Dell / Intel® New Paradigms in Design Work Scott Hamilton, vertical market strategist for Dell Precision workstations, 5/2/2013 5
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For industrial control applications, or even a simple assembly line, that machine can go almost 24/7 without a break. But what happens when the task is a little more complex? That’s where the “smart” machine would come in. The smart machine is one that has some simple (or complex in some cases) processing capability to be able to adapt to changing conditions. Such machines are suited for a host of applications, including automotive, aerospace, defense, medical, computers and electronics, telecommunications, consumer goods, and so on. This radio show will show what’s possible with smart machines, and what tradeoffs need to be made to implement such a solution.
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