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Old 04-07-2010, 08:22 PM   #15
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I know nothing about this device, but I know for a fact that in the distant past "Automakers" have purchased patented devices that they have then shelved once they owned them - because they worked!

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Old 04-07-2010, 10:30 PM   #16
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This device is not the path to improved fuel efficiency. The ECM is already designed as necessary to work properly, and will not give up a 15% efficiency loss.

The future path to gas engine efficiency will be incremental steps.

1. Continued improvement in vehicle aerodynamics.
2...Weight reductions, more costly lightweight materials.
3. Continued reduction of friction in drivetrain components.
4. Direct fuel injection could allow more optimum compression ratios and ignition timing.
5. Smaller displacement turbocharged engines.
6. Lean burn engines (leaner than 14.7 to 1) if the NOX issue can be solved. If so engines could combine # 4, 5, and 6 and be somewhat of a melding of gas/diesel technology at least at some part throttle ranges. But the NOX issue has been the stopper here.
7. Regenerative braking.
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Old 04-08-2010, 12:53 AM   #17
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This device is not the path to improved fuel efficiency. The ECM is already designed as necessary to work properly, and will not give up a 15% efficiency loss.

ECM may be designed to "work properly", but there was a time before ECU\ECM had emerged as a concept that the substitution of electronic fuel injection systems for carburetion was the be-all of electronic control.

More recently, for years now every automaker in the world has had engineering teams working to reverse-engineer "Trionic", Saab's revolutionary system for controlling automotive operations which make ECU seem like hand-cranking.

No small tweaks possible upon today's systems? There's always a tweak to be had.
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Old 04-08-2010, 02:37 AM   #18
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. . . There's always a tweak to be had.
Taken out of context that sounds a lot like "there's a sucker born everyday" . . . which put back in the context of this thread - IMO, fits.
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Old 04-08-2010, 09:38 AM   #19
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I put four fuel saving devices on my car. One reduced gas consumption by 30%, another by 40% and the other 2 by 20% each. I had to take them off as I got tired of stopping to drain the excess gas out of my tank, as I was saving 110% of the fuel I was buying!
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Old 04-08-2010, 10:03 AM   #20
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No small tweaks possible upon today's systems? There's always a tweak to be had.
The claimed 20% is not a "small tweak". In fact it is huge considering gasoline engine efficiency is 25-30%. The highest efficiency internal combustion engines (without cogeneration) are a little over 50% for large diesels. Do you really think this 20%+ tweak would push automotive gasoline engines towards this realm? And if it were as easy as filtering the DC why hasn't it been done? Getting a couple percent increase from a gas engine is huge these days. And it takes a lot of work to do it.
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