I visited "www.keelynet.com".
I start being quite skeptical when "pyramid power" and "radionics" are presented as anything other than an example of pseudoscientific thought.
Certainly if there are viable ways to recover coolant and exhaust heat somebody other...
I didn't get that from reading the post. . . .
"With nearly half a million miles on four Mack tractors equipped with cooled-EGR diesel engines, regional carrier D.M. Bowman reports that initial fuel economy numbers were 4% below non-EGR engines, but seem to be improving as the engines...
Thanks. . .
I know about the cooled EGR systems. I was wondering about the temperature of the exhaust gas when it comes from the cylinder and before its cooled.
It was my impression that the way EGR works is by slowing down the rate of combustion by decreasing the intake charge oxygen...
Almost all of the diesel engines now being manufactured are equipped with exhaust gas recirculation to lower nitrous oxide(s) production. The system works by effectively lowering the charge air oxygen concentration, therefore lowering peak combustion temperature and nitrous oxide(s) production...
Just a question on a general topic. . . .
I'm not employed in the automotive or engine industry. But I am an engineer, and I've developed a certain engine modification that has the potential to significantly enhance engine operation.
Having reviewed the field in some depth, I am well aware...
I suspect this isn't the case, but if the gen-sets are of either Cummins or Caterpillar origin the cooling requirements and radiator air flow can be found at their respective websites.
Billyshoppe and Retracnic:
Okay, maybe I'll award you guys the coveted supercharger/turbocharger supreme wizard title.
You're making it sound like it's no problem at all to run gas engines with 34 pounds of boost (albeit 103 octane gas was used) and 45 pounds of boost.
Would you care to...
Uh, that 414 ci engine is a diesel engine. With diesel's there is not a problem with high boost pressures, like there is with spark ignition engines.
If you can get a gas engine to run with 30 psi boost without an intercooler, you will be accorded the honor of turbocharger/supercharger supreme...
There's no way that you would be able to run a 30 psi boost . . .
unless you started with a extraordinarily low compression ratio, like 3:1 . . .
or you used a special high-octane fuel. You might be able to do it on natural gas.
"A Complex Solution to a Non-Existent Problem" :-D
Very well said!!
At the very least, and even with a 30 cc engine, they should report what their power output is for comparison runs.
tbuelna:
I'm not doubting you, but where is the reference on the Scania turbo-compound engine improving fuel efficiency 2%? I didn't see it in the website you referenced. Is there some place else that this figure comes from?
In the DEER 2003 (www.orau.gov, following the links to...
Nodnerb:
"A lot of effort has gone into improving combustion processes including , Electronic Injection( they claim V.V.T. is coming but can't quite manage it with so many individual cyl heads at the mo) separate circuit cooling of Charge Air Coolers, increased J.W. temps and the use of...
The answer about having the turbocharger followed by the exhaust turbine is that the turbocharger actually increases the efficiency of the engine. So while the turbocharger does increase the exhaust manifold pressure, the corresponding decrease in efficiency from this is more than offset by the...
I just checked some figures derived from a diesel engine simulator, set up for a turbocharged Cummins 5.9 liter diesel with the intake manifold pressure at 1.6 atms absolute pressure, and a turbocharger with an 80% efficient turbine and compressor. An exhaust turbine follows the turbocharger...
"One problem you face is that the average power output in a car is rather low - in a 200 hp car the average is around 22 hp."
I'm not sure exactly what you are saying -- is it that in a 200 hp car only about 22 hp is normally produced? Or is the amount of power retrieved from waste...
