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Topic: Miller cycle


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In the News (Thu 22 Aug 19)

  
  Halfbakery: Miller-Cycle Wankel
Miller cycles are up to about 10% more efficient than Otto cycles.
The Miller cycle is different from an Otto cycle because of the compression stroke.
Now with Miller cycles, the efficiency of the supercharger's compression wears off at high RPM since at that point the engine is more efficient at compressing the air than the supercharger.
www.halfbakery.com /idea/Miller-Cycle_20Wankel   (588 words)

  
  Miller cycle - Wikipedia, the free encyclopedia
In engineering, the Miller cycle is a combustion process used in a type of four-stroke internal combustion engine.
Typically this would lead to losing some of the needed charge, but in the Miller cycle the piston in fact is over-fed with charge from a supercharger, so blowing a bit back out is entirely planned.
Thus the Miller cycle uses the supercharger for the portion of the compression where it is best, and the piston for the portion where it is best.
en.wikipedia.org /wiki/Miller_cycle   (610 words)

  
 Miller cycle -- Facts, Info, and Encyclopedia article   (Site not responding. Last check: )
In (The discipline dealing with the art or science of applying scientific knowledge to practical problems) engineering, the Miller cycle is a combustion process used in a type of four-stroke (Click link for more info and facts about internal combustion engine) internal combustion engine.
The Miller cycle was patented by Ralph Miller, an American engineer, in the (The decade from 1940 to 1949) 1940s.
Typically this would lead to losing some of the needed charge, but in the Miller cycle the piston in fact is over-fed with charge from a (Compressor that forces increased oxygen into the cylinders of an internal-combustion engine) supercharger, so blowing a bit back out is entirely planned.
www.absoluteastronomy.com /encyclopedia/m/mi/miller_cycle.htm   (621 words)

  
 Atkinson cycle - Wikipedia, the free encyclopedia
The Atkinson cycle engine is a type of Internal combustion engine invented by James Atkinson in 1882.
The Atkinson cycle allows the intake, compression, power, and exhaust strokes of the four-stroke cycle to occur in a single turn of the crankshaft.
The Atkinson cycle may also refer to a four stroke engine in which the intake valve is held open longer than normal to allow a reverse flow into the intake manifold.
en.wikipedia.org /wiki/Atkinson_cycle   (426 words)

  
 Miller cycle   (Site not responding. Last check: )
Miller: The Inside Story on the Miller Cycle Engine Explains why Miller cycle (forced induction Otto cycle) is more efficient than pure Otto cycle: it reduces the effective compression stroke.
Miller: Digging Up Dead Relatives Family history of Jim Miller including the descendants of William S Luce of Clarke County, Iowa USA.
Miller, Miller and Miller, PLC Law office, with a list of services, contact information, and fees.
www.serebella.com /encyclopedia/article-Miller_cycle.html   (944 words)

  
 Miller Cycle Engines - Gizmo Highway how it works Guide
In the Miller cycle the intake valve is left open longer than it normally would be.
This is the "fifth" cycle that the Miller cycle introduces.
Thus the Miller cycle uses the supercharger for the portion of the compression where it is best, and the piston for the portion where it is best.
www.gizmohighway.com /autos/miller_engine.htm   (653 words)

  
 The Miller Cycle
Subaru plans to combine a Miller cycle flat-4 with a hybrid driveline for their "Turbo Parallel Hybrid." The traditional Otto cycle used four "strokes", of which two can be considered "high power" – the compression and power strokes.
To this end successful production versions of this cycle have typically used variable valve timing to "switch on and off" the Miller cycle when efficiency does not meet expectation.
Due to the reduced compression stroke of a miller cycle engine a higher over all compression ratio is possible, and therefore a miller cycle engine has a better efficiency.
members.cox.net /powellbn/miller.htm   (578 words)

  
 washingtonpost.com: Top Performer Declares End To Bear Market
The market's rally since then marks the turning point in the cycle, said Miller, who runs the Legg Mason Value Trust, a $9.3 billion fund that has outperformed Standard and Poor's 500-stock index 11 years running, a record unmatched in the mutual fund industry.
Miller is on his way to a 12th victory over the SandP, but his string was at risk until the market turned around.
Miller said investors' increased tolerance for risk and the market's hyper-efficiency mean that that the stock market already has taken account of the biggest threat looming in the future: the fear of war with Iraq.
www.washingtonpost.com /ac2/wp-dyn/A58412-2002Nov30?language=printer   (1290 words)

  
 TIP: Theories
George A. Miller has provided two theoretical ideas that are fundamental to cognitive psychology and the information processing framework.
Miller (1956) presented the idea that short-term memory could only hold 5-9 chunks of information (seven plus or minus two) where a chunk is any meaningful unit.
Miller, G.A., Galanter, E., and Pribram, K.H. Plans and the Structure of Behavior.
tip.psychology.org /miller.html   (382 words)

  
 Miller cycle
To this end successful production versions of this cycle have typically used variable valve timing to "switch on & off" the Miller cycle when efficiency does not meet expectation.
HowStuffWorks - How Does a Miller Cycle Engine Work - Explains the technical and historical background of the Miller cycle.
Introduction to Neutron Stars - An accessible introduction to neutron stars that includes details on their life cycles as well as detailed information on neutron star variants such as x-ray and gamma ray bursters.
www.nebulasearch.com /encyclopedia/article/Miller_cycle.html   (619 words)

  
 [No title]
He still used an intercooler, and still used the new high pressure turbo output, but he reduced the pressure and the temperature of the air charge by closing the intake valves before bottom dead center, thus bringing pressures down to normal values, and chilling the air to normal temperature as well.
Turbocharged spark-ignition gas engines were also fitted with the Miller system, but intake valve closure was retarded until after bottom dead center for good and sufficient reasons beyond the scope of this brief introduction.
Miller had an off-putting no-nonsense flavor to him, but when one got to know him well, he made great sense.
dieselduck.ca /machinery_page/miller   (853 words)

  
 Halfbakery: Two Stroke Diesel Miller Cycle
Now while this saves two whole cycles, since the engine doesn't have a dedicated exhaust stroke, it requires a supercharger to scavenge the cylinder.
The intake valve is also connected to the supercharger, so when the valve opens the engine acheives the Miller Effect (increasing efficiency dramatically) but also higher cylinder pressure and lower required compression ratio (remember that diesels are compression ignition), meaning you get more out of your supercharger than was ever possible.
It strikes me that the difference between the Otto and Atkinson/Miller cycles is one of degree, and that there is a valve timing regime (cam grind, if you wish) where you wouldn't be able to decide which cycle applies.
www.halfbakery.com /idea/Two_20Stroke_20Diesel_20Miller_20Cycle   (520 words)

  
 The Cook Political Report Weekly Column Archives
If there is a silver lining for the GOP in Miller's selection, it is for House Republicans, who cannot afford any more open seats in competitive districts.
He lost 53-45 percent to Miller in 1990 gubernatorial race and lost the 1996 Senate primary to Guy Millner.
Miller has spent a quarter of a century in Georgia statewide politics.
www.cookpolitical.com /column/2000/072500.php   (803 words)

  
 Miller Cycle Engine | Mazda Australia Zoom Zoom
The end result of this delicate balance of valve timing, compression ratio and forced induction, is a cylinder that is well filled with cool dense air but at a lower cost in terms of energy consumption than a conventional four cycle would allow.
On the Miller engine, the intake port has been shortened to promote smooth but strong intake air flow.
A mask is added to the intake side of the combustion chamber to concentrate the air flow to the centre of the cylinder; strengthening the tumble motion.
www.mazda.com.au /articleZone.asp?articleZoneID=92   (1761 words)

  
 Geoffrey Miller, Psychology Department at UNM   (Site not responding. Last check: )
Miller, G. Aesthetic fitness: How sexual selection shaped artistic virtuosity as a fitness indicator and aesthetic preferences as mate choice criteria.
Miller, G. Protean primates: The evolution of adaptive unpredictability in competition and courtship.
Miller, G. F., and Todd, P. The role of mate choice in biocomputation: Sexual selection as a process of search, optimization, and diversification.
psych.unm.edu /faculty/gmiller.html   (1302 words)

  
 Quasiturbine Problematic - HCCI Homogeneous Charge Compression Ignition - SCCI Stratified Combustion
At low load factor, the intake depressurization of the Otto cycle dissipates power from the engine since the throttle valve is almost closed and the descending piston acts as a clogged vacuum pump against the atmospheric pressure, which vacuum is subsequently partially destroyed by fuel vaporization during the compression.
Due to this effect, the engine in Otto cycle opposes to all RPM revolution increase (well known as the engine compression braking) and this intrinsic resistance to speed augmentation is compensated by a constant and important fuel consumption.
For this reason, the efficiency at low load factor of the photo-detonation engine is twice that of the conventional Otto cycle, and considering that the load factor of a car is in average of about 10 to 15%, this is not a small difference (saving is still superior in traffic jams...).
quasiturbine.promci.qc.ca /QTPhotodetonation.html   (5332 words)

  
 BioDieselNow Forums - MIT's Plasma Fusion Center scores another hit!   (Site not responding. Last check: )
Supercharged Miller cycle engines are roughly the same (some commercial engines are in the 42% range) but benefit from the supercharging for increased power.
The thermal efficiency of the Miller Cycle engine used for the energy generation is 42.2%.
(1) Miller cycle with expansion ratio 15 and compression ratio 11 (2) Combustion system to restrain knocking Low inlet air swirl engine thermal efficiency of 42.2% (the generating efficiency of 40%) could be attained.
forums.biodieselnow.com /topic.asp?TOPIC_ID=1617   (2386 words)

  
 SBU Bearcats - BASEBALL: MILLER POWERS BEARCATS TO A SWEEP OVER WESTMINSTER
In the fourth inning, Miller hit a bases loaded triple to make the score 8-1 and on his final at bat in the sixth, only needing a single to complete the cycle, Miller flew out to deep center field.
Miller finished the day with eight rbi's total and was one single shy of hitting for the cycle in Game 1.
Kevin Miller hit a solo shot to lead off the bottom of the third inning and hit his third homerun of the day in the bottom of the fifth with another solo homerun to left field.
www.sbuniv.edu /athletics/baseball/05/wc.htm   (483 words)

  
 Disadvantages to the Miller cycle? - Forced Induction - Automotive Forums .com Car Chat- A Message Board for Every Make ...
Cost is a factor because the Miller Cycle requires a supercharger in the compression cycle.
The Miller cycle basically keeps the intake valves open into the compression stroke, closing them a bit after the piston rises from BDC.
The Miller Cycle is technically the same as the Otto Cycle except that a supercharger is used and the intake valve close timing is delayed so that the compression stroke starts with the piston compressing against the supercharger.
www.automotiveforums.com /t148650.html   (1508 words)

  
 AutoWeb - New Car Test - Eunos 800 Miller cycle
The Miller cycle engine is unique in that it closes the intake valves much later than in a conventional Otto engine.
The Miller Cycle Engine sticker looks like a cheapy run up as the local sign shop, while the welding of the two air/air intercoolers and their location appear to be cost-cutting measures.
The intercoolers are fed via underbonnet ducts from the grille between the headlights; at times the intercoolers are too hot to touch, even on a cool day with the car not driven hard...
www.autoweb.com.au /cms/article.html?&A=0179&P=1   (2229 words)

  
 Sony TV making 'Sense'; in-house Miller-Conn pilot   (Site not responding. Last check: )
NBC is contributing to the deficit financing of the pilot in exchange for an exclusive first-look option on it after it is completed.
Written and executive produced by Miller and Conn, "Uncommon Sense" centers on Larry (Miller), a columnist with a wry sense of humor, and his relationship with his wife.
Miller, who starred in David E. Kelley's short-lived series for CBS "The Brotherhood of Poland, N.H.," recently guest-starred in a couple of episodes of Kelley's new series "Boston Legal" on ABC.
www.hollywoodreporter.com /thr/television/article_display.jsp?vnu_content_id=1000770058   (351 words)

  
 First and Second Law Analyses of a Naturally-Aspirated, Miller Cycle, SI Engine with Late Intake Valve Closure
A naturally-aspirated, Miller cycle, Spark-Ignition (SI) engine that controls output with variable intake valve closure is compared to a conventionally-throttled engine using computer simulation.
The Miller Cycle engine can use late intake valve closure (LIVC) to control indicated output down to 35% of the maximum, but requires supplemental throttling at lighter loads.
The First Law analysis shows that the Miller cycle increases indicated thermal efficiency at light loads by as much as 6.3%, primarily due to reductions in pumping and compression work while heat transfer losses are comparable.
me.engin.umich.edu /autolab/Publications/P1998_02.htm   (244 words)

  
 Import Tech Forums -> Millenia S
So I heard the Milennia S was supercharged, but not like a normal supercharger, I think the guy said it had a Miller Cycle engine.
The miller cycle has nothing to do with the blower itself, so you would still have the same reliability quirks as a normal supercharged car.
The whole idea is that by altering valve lift to get a 5th cycle, you are able to make power production more efficient, and also able to run more aggressive timing which is more efficient.
www.import-tech.net /forums/index.php?showtopic=151&view=old   (875 words)

  
 Hardwick Cycling Campaign -Discussion   (Site not responding. Last check: )
To: Andy Smith From: Kevin Miller Subject: Cycle Path straw poll Date: Wed, 6 Aug 2003 13:12:27 +0100 I concur entirely with what David said in his posting yesterday.
I leave the cycle path at the Madingley Mulch lay by mainly because I avoid the Long Road junction.
The cones narrow the path at a point where there is a steep drop directly from the edge of the path into what is, in effect, a comparatively deep ditch.
www.hardwick-cambs.org.uk /hcc/km003.htm   (260 words)

  
 Miller Cycle   (Site not responding. Last check: )
We recently had a visitor from WY who introduced the list to the Miller cycle as opposed to the Otto thermodynamic cycle.
As in 6, 12, 24, 48 "miller units" or ¼ keg.
I am told the Miller cycle may be demonstrated next convention by talented volunteers.
www.v8sho.com /SHO/MillerCycle.htm   (273 words)

  
 GTP Forums - Miller Cycle Millenia/626?
I though the Miller cycle was used to lessen detonation on supercharged cars.
Were the Miller cycles engines supercharged, were they imported to the US, which cars were thay in, and how did they perform?
Oct 14 2005 12:48 PM The Miller is a standard Mazda K-series V6 (2.3 litres, rather than the 1.8/2.0/2.5/3.0 versions) with a supercharger nailed between the cylinder banks.
www.gtplanet.net /forum/printthread.php?t=49916   (477 words)

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