rama_rama posted on 2-6-2008 12:00 PM

Apa perbezaan kete karburator & injection

Sapa-sapa yg mahir dlm bidang leh terang kan....tul ke kete injection lebih jimat penggunaan minyak..?:o

matamata posted on 2-6-2008 12:32 PM

Karpekpekor.....injin tu pakai sistem karpekpekor....

Injection....Injin tu pakai Injector....

:$

deskcom posted on 2-6-2008 12:40 PM

kekekeke.... nama pun dah lain...

http://ms.wikipedia.org/wiki/Suntikan_bahan_api  <--- injection

http://ms.wikipedia.org/wiki/Karpekpekor

bzzts posted on 2-6-2008 01:14 PM

kopoklekor tau le... sedapp... :lol:

bzzts posted on 2-6-2008 01:22 PM

"How does a carpekpekor work?"
http://auto.howstuffworks.com/question377.htm

"How Fuel Injection Systems Work"
http://auto.howstuffworks.com/fuel-injection1.htm

Carb vs. Injection
Are Carpekpekors Dead?
http://www.carcraft.com/techarticles/carpekpekor_vs_injection/index.html

Re: Fuel Injector vs carpekpekor
http://autoforums.carjunky.com/autoforums/Automotive_World_C11/Gasoline,_Motor_Oils,_Concept_Cars_and_Engines_F24/Fuel_Injector_vs_carpekpekor_P339/

This is an interesting question, I think it could be argued either way!!

Top Fuel Dragsters and Funny Cars use mechanical fuel injection. Most of the fuel is injected through nozzles that are mounted directly into the combustion chamber of the cylinder heads. A small amount of fuel is injected through the supercharger to keep it cool and lubed. The fuel curve is preset before they make their run and it will not compensate for changes in atmospheric conditions like modern electronic fuel injection systems will. This is when a good crew chief is a must!!!!

Yes, I agree you can easily “tune” a carb to make an engine run at it’s optimum potential. However, we all know that an engine that is running either lean or rich isn’t making it’s most power therefore, in modern racing I think fuel injection is becoming more and more common. Warren Johnson, second on the all time win list in professional drag racing, races in the category called “Pro Stock” Warren has been wanting fuel injection allowed for years in Pro Stock. He thinks fuel injection would make more power and be easier to tune. Instead of using “jets” to tune the car he would just use a “laptop” to adjust the fuel ratio.….. Pro Stock currently runs 500 cubic inch, gasoline burning, dual 4 barrel carb V8’s and make about 1700HP. They run about 6.70 seconds in the quarter mile at 206MPH.


In drag racing (and I’m sure in other form of racing also) we use a term called “corrected altitude” which means the altitude the engine “thinks” it’s running at above sea level. Lets say were running at a track that is 1500 feet above sea level, the corrected altitude may be 2800 feet because of the atmospheric condition. Ambient air temp, humidity (water grains) , barometric pressure and actual altitude are some of the factors used in calculating the corrected altitude. I’ve seen conditions on race day change drastically (more than you would think they would or should) In fact, the race track in Joliet Illinois…. Route 66 raceway, very often has what we call “Mine Shaft Conditions” I forget what the actual altitude is but sometimes the “corrected altitude” is WAY below sea level and when that happens….. LOOK OUT!!! There has been MANY national speed and elapsed time records broken and reset at that track because of the mine shaft conditions. When racing in mine shaft conditions, if you don’t “rejet” from the last track where you were running at 2800 feet you could be dangerously LEAN!!! If you were running an electronic fuel injection system you wouldn’t need to worry because it would compensate automatically.


The category my friends race in is a “Super” category. In Super class racing we use a “throttle stop” to slow the cars down to a national index for that class. Our national index is 9.90 seconds but the cars are capable of running in the 8 second range. Because we have more power than needed to run 9.90 we just jet the car “fat” or “rich” so we know it’s safe and not lean and control the speed of the car by adjusting the throttle stop timer. If we need to go slower we put more time in the timer, if we need to go faster we put less time in the timer. We use a “weather station” connected to a computer mounted in the motor home back in the pits that constantly monitors the changing conditions. It automatically computes the changes and how the car will react to those changes and sends a “throttle stop prediction” every 2 minutes to a digital pager that I have on my belt. Just before my friend stages the car I tell him the latest “prediction” and he puts that number into the timer in the car. If everything goes correctly the car should go 9.90 seconds. (there is actually more to it but this was the abbreviated version)

In our class of racing we have more power than we need but in other classes where they need all the power they can get I think fuel injection would definitely be the way to go if allowed in that category.


I hope I didn’t ramble too long about racing,
Brian.
Kitty O'neil 412 mph in 3.22 sec. in 1977!!!

takumi86 posted on 2-6-2008 01:22 PM

Reply #1 rama_rama's post

waahh..
ni si squall terror bab explaining benda mech ni..
dia best student bab ni dulu...  :lol:

neotoxin posted on 2-6-2008 01:28 PM

adehh.. naik lemas aku gelak baca thread ni laa... admin porem cari ni xleh ke ubah setting auto-replace perkataan "b u r e t" supaya tak jadik 'pekpek'?

takumi86 posted on 2-6-2008 01:47 PM

Reply #7 neotoxin's post

tu laa..
ubah ler ejaan tu...

tulis... karburater pong ok pee...

bzzts posted on 2-6-2008 01:49 PM

Reply #8 takumi86's post

carpekpekor

bzzts posted on 2-6-2008 01:50 PM

Reply #8 takumi86's post

takumi, try check ni : http://forum3.cari.com.my/viewthread.php?tid=335310

harap ko reply kat situ sbgai support.

selipar_hijau posted on 2-6-2008 02:24 PM

kalau kancil pulak apa??? heheheh.. nk tau gak :lol: :lol:

p4k4bu posted on 2-6-2008 02:48 PM

Originally posted by rama_rama at 2-6-2008 12:00 PM http://eforum.cari.com.my/images/common/back.gif
Sapa-sapa yg mahir dlm bidang leh terang kan....tul ke kete injection lebih jimat penggunaan minyak..?:o

Dalam bahasa orang baring (layman's term), karburator ni pada prinsipnya menyedut campuran bahanapi dan udara ke dalam silinder. Dgn kata lain sistem pasif.

Injection pulak, dia paksa campuran bahanapi dan udara masuk ke dalam silinder. Jadi maknanya sistem aktif. Jadi, nisbah campuran dan kuantiti boleh dikawal. Itu sebab lebih jimat minyak.

matamata posted on 2-6-2008 05:00 PM

rasanya menda ni dah ada....dah maleh aku nak tulih   :kant:

cikguranggi posted on 2-6-2008 05:00 PM

EFI lebih jimat minyak dan enjin bersih drpd karburator.......LMST aku enjin berabuk abis...!!! :mad:

selipar_hijau posted on 2-6-2008 07:26 PM

lagi 1, dari segi pasang ekon, karpekpekor lagi cepat makan mnyak ke?
aku dengar rmai yg cakap camtu. betul ke?

deskcom posted on 2-6-2008 08:32 PM

Reply #15 selipar_hijau's post

kalau pasang ekon mmg makan minyak sikit... tapi x banyak pun... tak perlu risau sangat pasal ni...

selipar_hijau posted on 2-6-2008 09:38 PM

Reply #16 deskcom's post

hmmm.. ye ke. tp sib baik aku jarang guna sgt ekon. nti asik nak ke jamban je. sejuk.

batu_bergolek posted on 2-6-2008 09:50 PM

Kalo oghang AMERIKA diorang sebut "carpekpekor" tapi kalo orang ENGLAND diorang sebut la " carpekpektor". Orang MALAYSIA pulak "carpekpekor"  :lol: :lol:

enjin "carpekpekor" ni simple design dia dan reliable, hampir semua mechanical tuning. kalo ko tengok BAJA 1000, kebanyakan still pakai carpekpekor, sbb senang nak repair.

cikguranggi posted on 2-6-2008 09:58 PM

sila tulis perkataan karbu retor kepada perkataan karburator

harap maklum.......!!!!!!!!!!!!

batu_bergolek posted on 2-6-2008 10:03 PM

Originally posted by batu_bergolek at 2-6-2008 21:50 http://eforum.cari.com.my/images/common/back.gif
Kalo oghang AMERIKA diorang sebut "carpekpekor" tapi kalo orang ENGLAND diorang sebut la " carpekpektor". Orang MALAYSIA pulak "carpekpekor"  :lol: :lol:

enjin "carpekpekor" ni simple design  ...

MOD kenaper aku punyer word kene tukar? aku tulis dlm B.I semua jadi

cikguranggi posted on 2-6-2008 10:04 PM

Reply #20 batu_bergolek's post

ada perkataan lucah iaitu b u r e t......itu sbb ditukar..........

batu_bergolek posted on 2-6-2008 10:05 PM

Originally posted by cikguranggi at 2-6-2008 22:04 http://eforum.cari.com.my/images/common/back.gif
ada perkataan lucah iaitu b u r e t......itu sbb ditukar..........

lahhh baru aku faham, :lol: :lol: :lol: . Sorry ye.

deskcom posted on 2-6-2008 10:06 PM

Reply #17 selipar_hijau's post

elok ko guna la.. takut nanti motor jem... econ ni boleh tahan mahal nak repair... kereta saga aku econ out sebab lama sangat tak guna... :L

southern_wheel posted on 3-6-2008 12:17 AM

tapi org kate karpekpekor lagi kuat pick up...

betul ke?:o

southern_wheel posted on 3-6-2008 12:18 AM

err..apesal aku eja lain kuar pekpek?

herannnn...:o
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