Boxer motor - FAQ

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subi92
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Boxer motor - FAQ

Odgovor Avtor: subi92 » 07. Junij 2006, 12:36

Torej zaznal sem da nekateri ne znajo ali pa si ne znamo povedat kaj več o motorjih ki poganjajo naša vozila... predvsem od iznajdbe, nastanka itd...

Mojster iznajdbe:

http://upload.wikimedia.org/wikipedia/c ... rlBenz.jpg

November 25, 1844 – April 4, 1929) was a German engine designer and automobile engineer, generally regarded as the inventor of the petrol-powered automobile. Other German contemporaries, Gottlieb Daimler and Wilhelm Maybach, also worked independently on the same type of invention, but Benz patented his work first and, after that, patented all of the major components that made the internal combustion engine feasible for use in automobiles.

In 1885, he created the Motorwagen, the first commercial automobile, powered by a gas engine. It had three wheels, being steered by the front wheel and with the passengers and the engine being supported by the two in the rear—some now refer to it as the Tri-Car. Among other things, he invented the carburetor, the speed regulation system known also as an accelerator, ignition using sparks from a battery, the spark plug, the clutch, the gear shift, and the water radiator.

In 1896, Karl Benz designed and patented the first internal combustion boxer engine with horizontally-opposed pistons, which continues to be the design principle for high performance engines used in motorsports.

Benz founded the Benz Company, precursor of Daimler-Benz, Mercedes-Benz, and DaimlerChrysler. Before dying he would witness the explosion of automobile use during the 1920s.

Zgodovina naših mlinčkov:

http://upload.wikimedia.org/wikipedia/e ... iagram.jpg

Flat engine
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A flat engine is an internal combustion engine in which the cylinders are arranged in two banks on either side of a single crankshaft so that the motion of all the pistons is in a single plane. In 1896, Karl Benz patented his design for the first internal combustion engine with horizontally opposed pistons.

There are two main types of flat engine:

* The boxer engine, also known as a horizontally opposed engine, in which the corresponding pistons reach top dead centre simultaneously, thus balancing each other with respect to momentum. Flat engines with four or fewer cylinders are most commonly boxer engines.

* The 180° V engine, in which corresponding pistons share a crank pin, and thus each will reach top dead centre half a crankshaft revolution after the other. Flat engines with more than six cylinders are most commonly V engines.

In German, the term for flat engine is boxermotor, which includes both types, not just those known as boxer engines in English. it is often said that Adolf Hitler supposedly coined the term when he was inspecting the engine of the then new Volkswagen in World War II. When the pistons of the motor are observed from the top they appear to be two people "boxing".

Another source of confusion is the English term horizontally opposed engine, which contrasts with an opposed piston engine, a completely different concept.
Contents
[hide]

* 1 Boxer engines
* 2 180° V engines
* 3 See also
o 3.1 Flat engine designs
o 3.2 Other engine designs


Flat engines are more compact than in-line engines, and have a lower center of gravity than any other common configuration. Automobiles and motorcycles powered by a flat engine generally have a lower center of gravity, giving better stability and control. However, these engines are also wider than more traditional configurations and are more expensive to build. The extra width may cause problems in fitting the engine into the engine bay of a front-engined car owing to the interference with the steering wheels, and cornering problems for a motorcycle.

The flat configuration also fits very well with air cooling and aircraft engines. Air-cooled designs such as in the VW Beetle used a flat-4, as did the Porsche 356 and 912. The Chevrolet Corvair used an air-cooled flat-6, a rarity in American designs. Both the older and newer models of the 911 use a flat-6, at first air cooled but later models are water-cooled. These automobiles situate the engine in the rear rather than the front, where its width does not interfere with the steering of the front wheels; the use of air-cooling obviates the need for connecting the engine to a radiator, and also reduces the weight even more.

Front-mouned air-cooled flat-twin engines were used by Citroën in their model 2CV and its derivatives, while the Citroën GS used a flat-4, and a flat-6 was proposed for the Citroën DS but rejected. BMW uses an air-cooled flat-twin in many of their motorbikes.
[edit]

Boxer engines
Diagram of the opposing pistons in a boxer engine
Enlarge
Diagram of the opposing pistons in a boxer engine

Boxer engines of up to six cylinders have proved highly successful in both automobiles and motorcycles, and continue to be popular for light aircraft engines.

One benefit of using a boxer engine versus a V engine is that the design provides good balance because each piston's momentum is exactly counterbalanced by the corresponding piston movement of the opposite side. These engines can run very smoothly and free of vibrations with a four-stroke cycle, regardless of number of cylinders, and do not require a balance shaft or counterweights on the crankshaft to balance the weight of the reciprocating parts which are required in other engine configurations. But boxer engines tend to produce more noise than inline and V-engines because valve clatter is not so well dampened due to lack of covering by air-filters and other components, and produce a larger torsional vibration than a V engine, and so tend to require a larger flywheel.

Notable boxer engines include:

* In 1896 Karl Benz invented the first internal combustion engine with horizontally opposed pistons.
* The air-cooled flat-4 engine used in the Volkswagen Beetle and Karmann Ghia, and later developed further for the Volkswagen Type 2(Bus) transporters and Volkswagen Type 3 cars.
* The air-cooled flat-2 "knee-warmer" motorcycles produced for many years by BMW motorcycles, and as of 2005 now back in their range by popular demand after an attempt to discontinue the design.
* The Citroën 2CV and Panhard air-cooled flat-2 engines, both influenced by the flat-2s of BMW.
* The air-cooled Porsche 911 and Chevrolet Corvair flat-6s.
* The flat-4 engines in Alfa Romeo's Alfasud, Sprint, 33 and early versions of the 145 (last of the line was a 1712 cc flat four, 16 valves, producing up to 137bhp)
* The flat-12 engine in the 24 Hours of Le Mans-winning Porsche 917.
* The water-cooled front-mounted flat-4 and flat-6 engines used by Subaru in all of its mid-sized all wheel drive cars. Subaru calls these H engines in defiance of the normal nomenclature.
* The water-cooled SOHC 1832cc flat-6 as fitted to the Honda Gold Wing.

[edit]

180° V engines

Flat V engines are used in performance and racing cars, normally with six or more cylinders. Ferrari used a 180° version of the Colombo V12 in the Testarossa and Berlinetta Boxer models.


Sem prepričan da boste mnogi kljub ENG. odkrili marsikaj zanimivega ;-)

Gradivo: http://en.wikipedia.org/wiki/Horizontal ... sed_engine

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niva13
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Odgovor Avtor: niva13 » 30. September 2006, 11:17

In prvi Subaru z boxer masino je bil tale piki leta 1966

Subaru 1000

http://www.subaru-global.com/about/hist ... 5-001.html

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mateus
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Odgovor Avtor: mateus » 09. Januar 2008, 15:58

Še nekaj o boxer motorju na wikipediji

WIKI flat4 ->

Drugače se pa zelo dobro boxer motor uporablja v športnih letalih Cessna.

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birdy
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Odgovor Avtor: birdy » 09. Januar 2008, 16:19

pripomba:
v vecini sportnih letal so boxer motorji in to oljno/zracno hlajeni(da naute vsi sam cessne povelicevali :P )

http://ul-fliegen.almeria.de/Fliegen_im ... g/P921.gif
primer:
Tecnam P92 z 100konjskim Rotaxovim boxer motorjem

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CUNDE
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Janez PUH/PUCH

Odgovor Avtor: CUNDE » 11. Januar 2008, 13:07

Pred dnevi je bila na TV oddaja o Janezu PUHU. Patent za 4 valjni boxer ima namreč človek slovenskega rodu. Ideja pa se je najbrž porodila v smeri zmanjšanja vibracij ki jih je ustvarjal do tedaj znani dvovaljni boxer motor. Baje je bil to prvi avto -PUCH ki se ni tresel /kot pes na kuzli/.

Jaz pa še zmeraj mislim da je Subaru v sedemdestih skopiral motor od Lancie ki še najbolj spominja na subarujeve boxerje iz tistega časa. Moramo priznati da je bila Lancia zelo napredna in dejansko italianski Mercedes tistega časa. Pa še to -Japonci so bili zavezniki makaronarjev v 2.svetovni vojni...(Porche in VW) pa sta bila tedaj še zračno hlajena.


Tudi tovarna Nakajima /1917/- /letalska tovarna/ kamikaze itd.....postane leta 1953 Nam tako znana Fuji heavy industry - katere del je SUBARU.
(cca.8.5% lastništva v FHI ima Toyota)
Združili naj bi 6 tovarn in od zato je 6 zvezdic v znaku pomeni pa "ozvezdje".


Če ve kdo še kaj okrog tega ali pa ima kakšno mnenje (lahko tudi nasprotno :oops:) naj prosim napiše.



L.p.[/i]

substi
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Odgovor Avtor: substi » 11. Januar 2008, 15:14

Kokr sem jaz gledal in sem prišel le do tega, da beseda Subaru v japonščini pomeni "star cluster Pleiades" po naše Plejad (če se ne motim), ki je sestavljen iz 7 zvezd, ki so vidne s prostim očesom. In tako 5 zvezdic predstavlja prvih pet podjetij, ki so se združili v Subaru - 6 zvezda.

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CUNDE
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Odgovor Avtor: CUNDE » 11. Januar 2008, 15:18

substi napisal/-a:Kokr sem jaz gledal in sem prišel le do tega, da beseda Subaru v japonščini pomeni "star cluster Pleiades" po naše Plejad (če se ne motim), ki je sestavljen iz 7 zvezd, ki so vidne s prostim očesom. In tako 5 zvezdic predstavlja prvih pet podjetij, ki so se združili v Subaru - 6 zvezda.
:oops: ej sori sej je res sramota da nisem zvezdic preštel...
pol pa 5 ;-)

flat4
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Odgovor Avtor: flat4 » 11. Januar 2008, 20:29

hroščev bokser je mel že od samega začetka, daljnega leta 1934, alu blok
(bolj natančno aluminij-silicij, ter nekateri modeli magnezij)
"Mind is everything. Muscle - pieces of rubber. All that I am, I am because of my mind."
Paavo Nurmi

flat4
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Odgovor Avtor: flat4 » 11. Januar 2008, 20:31

Tudi drugače kokr sm jst zasledil ma patent za bokser motor Karl Benz.
"Mind is everything. Muscle - pieces of rubber. All that I am, I am because of my mind."
Paavo Nurmi

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CUNDE
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Janez in Karel

Odgovor Avtor: CUNDE » 12. Januar 2008, 09:54

flat4 napisal/-a:Tudi drugače kokr sm jst zasledil ma patent za bokser motor Karl Benz.
Ja mislim da za dvovaljni boxer za 4 bo pa takole:PUCH

•Leta 1909 je prijavil patent za štirivaljni eksplozivni motor z dvema paroma zrcalno se gibajočih batov.

http://www.janez-puh.si/oldweb/Meni.htm

Tukaj imaš tudi nekaj ostalih zanimivih patentov.

Je bil kar frajer tale Janez...

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Mr-B
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Odgovor Avtor: Mr-B » 12. Januar 2008, 14:41

flat4 napisal/-a:hroščev bokser je mel že od samega začetka, daljnega leta 1934, alu blok
(bolj natančno aluminij-silicij, ter nekateri modeli magnezij)
Kakor se jest spomnm so mel moji trije hrošči bloke iz jeklene litine in glave aluminijaste.

LPB
Speed kills - drive faster!!!
http://shrani.si/t/3X/VQ/7WBSU5f/podpis.jpg

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Mr.Moto
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Re: Boxer motor - FAQ

Odgovor Avtor: Mr.Moto » 15. Februar 2014, 22:37

Takega VW hrošča ni ! Vsi zračno hlajeni VW motorji imajo alu blok in glave, samo valji so siva litina.
Življenje je izzivalna pustolovščina ali pa nič. Če se znamo soočiti s spremembami in se svobodnega duha spopadamo z usodo, smo nepremagljivi !!!

Do it today, because tomorrow could be a law against it !

Modras
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Re: Boxer motor - FAQ

Odgovor Avtor: Modras » 16. April 2016, 18:43

Zanimivo, da sta omenjeno tehniko do danes ohranila le Subaru in AlfaRomeo.
Kaj mislite, da je vzrok, da je večina proizvajalcev opustila omenjeno tehniko?

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BackW00d
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Re: Boxer motor - FAQ

Odgovor Avtor: BackW00d » 16. April 2016, 19:00

Strošek izdelave motorja?

delov v "zgornjem" delu motorja je pri bokserjih krat 2.

Dvojne (četvorne če je DOHC) odmične gredi, dve glavi, itd itd...
Sometimes life goes sideways. That's where the fun begins....

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irCAR81
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Re: Boxer motor - FAQ

Odgovor Avtor: irCAR81 » 16. April 2016, 19:02

Modras napisal/-a:Zanimivo, da sta omenjeno tehniko do danes ohranila le Subaru in AlfaRomeo.
Kaj mislite, da je vzrok, da je večina proizvajalcev opustila omenjeno tehniko?
Nepotrebni stroški, kompliciranje in praktično nobene prednosti.

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