The power per cycle is what is of concern, as <kevnindurette> correctly observes. The qdot/hp is the parameter of concern, not the total heat flux, in my opinion.
Re-stating the obvious: With less residence time for the combusting/combusted gases at higher rpm, more of the heat will be carried...
Great responses, guys.
The volume/surface issue of Wankels always comes up, but there is the thought that at some sufficiently high rpm the residence time of the combustion gases would be short enough to get beyond this limitation...
The concept of 'chasing' the rotor around with multiple...
With the advent of electronic controls on Diesel injectors, is anyone working on multiple injections into a Wankel type engine to "chase" the rotor around its path, coming closer to a constant pressure expansion cycle? Seems like a possibility is opening up here. The kludge way of doing it would...
I'd be stepping over the 'bright lines' of my confidentiality agreement if I disclosed the patent number at this point, and I would never do such a thing. I hope you understand.
Suffice it to say that someone did get a patent on having a projected insulator tip within the bast decade, and only...
Excellent tips, guys I appreciate it.
I met Smokey once and had a long conversation with him about spark plugs. I have to tell you what he said - I asked him about indexing plugs - did it really make any difference. Smokey replied with a PG-13 rated answer that surprised me, saying: "Well, you...
Patprimer
That's sort of what I've been asked to prove - someone has been issued a patent on a projected nose spark plug that we all know was shown in prior art from long ago. I'm trying to document this. It is turning out to be not as easy - all of this occurred before the internet. It also...
Guys
I'm involved in a patent study project and am looking for the first patent on the projected nose spark plug, which from my memory, was done by Champion in the late 60's.
Anyone out there know the history of these?
Thanks for any input -
Flamefront
Gentlemen
I'm new to the industry and working on a petroleum process system where I've been asked to upgrade the alloy of some 4" ID pipes to prevent "carbon fiber" growth, which occurs in the section seeing over 500ºC.
How big of an issue is this in process plants? How often are plants shut...
Gentlemen
I'm new to the industry and working on a petroleum process system where I've been asked to upgrade the alloy of some 4" ID pipes to prevent "carbon fiber" growth, which occurs in the section seeing over 500C. The carbon fibers grow at Fe sites and end up restricting the flow through...
Gentlemen -
Thank you for the excellent responses to the question. This gives me good focus with which to evaluate the patent - as some of you state the novelty is in the racking of the transducer, and it sounds like from kontiki99 that some clever data acq engineers on the floor at Boeing...
I need to find a supplier who can plate a one-off engine cylinder for a prototype. The cylinder is aluminum (319) and I need a porous chrome plating on it to survive the piston ring running against it. An alternative is Nikaseal (sp), so any leads to a vendor for that would be helpful as well...
Gentlemen,
I'm reviewing a patent for viability - is uses acoustic waves to detect faults in a structure such as an airplane wing. The invention uses a transducer to excite a composite structure and looks at the echo signature for anomalies.
This sounds like an old idea. Hasn't acoustic...
Fojo
I think you are corret - The mention of the Iron Duke engine was more of a philosophical comment on taking a cheap high volume production pushrod engine and making s/c power rather than going the DOHC Vtec route - cheaper and better in the end.
The duty cycle for Park Avenue Eaton...
In the battle for reduced HC+NOx there are a couple of other tricks you can play that are very reliable.
While consulting with one of the larger 2 stroke mfrs over the past years in helping reduce their HC numbers (NOx is not a concern in 2 strokes), I found some mettalurgical games you can...
Well, you are right, but I'm trying to figure out if I can find a vane pump-style compressor.
This was done by Schrrock in the UK in the 60's for automotive supercharging, but max boost was 0.5 bar and longevity was terrible.
I'm trying to find out if anyone's ever tried to make a high...
I've seen good results with a zirconia surface coating for steel rollers in tough situations. I have used the coating with success. Company is at www.cccintl.com It works on bearings as well.
A general question: What is the maximum pressure that an axial vane pump can generate for air? I know these are very good at high pressure for incompressible fluids, but for air or gases, can they get up to 10 bar?
A related question: Which vane pumps use seals on the vanes themselves...
