Imiski's Posts
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na wa ooo |
hmmmmmmmmm |
PassingShot:I am not trying to be proud but some one witout traing in economics lead an economy leave okonjo from D's dia wia oda technocrats hu did not perform but dat aside if u do no t k n w miro economic principles and macro economic principle finicial institutions and markets econometrics wch are course tot exclusively to economist even banking and finance borrow some of t.e afore mentioned but not all.. so wat would and accoutant trained mainly to prepare account to c if d economic. principles bring profit to an. organization |
mb all day every year |
honmusa:tnx I can't copy d link I've closed it but it was on wikipedia |
copy..... Car engines are built around a set of "cooking
pots" called cylinders (usually anything from two
to twelve of them, but typically four, six, or eight)
inside which the fuel burns. The cylinders are
made of super-strong metal and sealed shut, but
at one end they open and close like bicycle
pumps: they have tight-fitting pistons (plungers)
that can slide up and down inside them. At the
top of each cylinder, there are two valves
(essentially "gates" letting things in or out that
can be opened and closed very quickly). The
inlet valve allows fuel and air to enter the
cylinder from a carburetor or electronic fuel-
injector; the outlet valve lets the exhaust gases
escape. At the top of the cylinder, there is also a
sparking plug (or spark plug), an electrically
controlled device that makes a spark to set fire
to the fuel. At the bottom of the cylinder, the
piston is attached to a constantly turning axle
called a crankshaft. The crankshaft powers the
car's gearbox which, in turn, drives the wheels.
How does a four-stroke
engine make power?
Watch this animation and you'll see that a
car engine makes its power by endlessly
repeating a series of four steps (called
strokes):
1. Intake: The piston (green) is pulled
down inside the cylinder (gray) by the
momentum of the crankshaft (grey
wheel at the bottom). Most of the time
the car is moving along, so the
crankshaft is always turning. The inlet
valve (left) opens, letting a mixture of
fuel and air (blue cloud) into the
cylinder through the purple pipe.
2. Compression : The inlet valve closes.
The piston moves back up the cylinder
and compresses (squeezes) the fuel-
air mixture, which makes it much
more flammable. When the piston
reaches the top of the cylinder, the
sparking plug (yellow) fires.
3. Power: The spark ignites the fuel-air
mixture causing a mini explosion. The
fuel burns immediately, giving off hot
gas that pushes the piston back down.
The energy released by the fuel is
now powering the crankshaft.
4. Exhaust: The outlet valve (right)
opens. As the crankshaft continues to
turn, the piston is forced back up the
cylinder for a second time. It forces
the exhaust gases (produced when
the fuel burned) out through the
exhaust outlet (blue pipe).
The whole cycle then repeats itself.
How many cylinders does an
engine need?
One problem with the four-stroke design is that
the crankshaft is being powered by the cylinder
for only one stage out of four. That's why cars
typically have at least four cylinders, arranged
so they fire out of step with one another. At any
moment, one cylinder is always going through
each one of the four stages—so there is always
one cylinder powering the crankshaft and
there's no loss of power. With a 12-cylinder
engine, there are at least three cylinders
powering the crankshaft at any time—and that's
why those engines are used in fast and powerful
cars.
Photo: More cylinders mean more power. Left: A
4-cylinder, 48hp Morris Minor engine from the
1960s. This engine is so incredibly tiny, it really
looks like there's something missing—but it can
still manage a top speed close to 125 km/h
(80mph). Right: A huge V12 Jaguar XJS sports
car engine from the mid/late 1970s gives a top
speed of about 240 km/h (140 mph). It's
something like 300hp (about six times more
powerful than the Mor |
pls Gurus wats /how do cylinders work in a car engine... |
End time wife ;DEnd time wife |
galadima77:and more fuel scarcity ![]() galadima77:and more fuel scarcity |
Tycoflu:D's Ur man is a fake and u his supporter is also a fake jona Neva gave us useless promises.......yea am a wailer a supporter of Jonathan d clueless one and mama piss......wat else do u have to yab me again..mtcheeeeew |
this joke is as old as my grand father first diapers....be creative |
phlemzy:is it her that was voted for......vote Buhari for prez osinanjor vice Aisha office of the first lady |
hahaha and his office is outside dats y he is receiving d documents outside.... Biafra |
kingzizzy:. And Dy wrote David Cameron aid on d guys shirt why did Dy collect it outdoor not in a more formal way like an office # pls don't get me wrong am not a hater but a broad tinker |
Hahahahaha is dat David Cameron comon we are better than this na...... |
D's man is funi wen we have Biafra threatening Nigeria sovereignty he has not said ani tin except d normal bodi language he is hia condemning d one happening outside........... |
MosakuAW:a$$hole |
D's story is as old as Buhari we need smth new* walks out of thread |
D's joke is older than my grand fada |
wats d yourba word for olodo |
Abg make nyesom do win D's appeal den APC go supreme den wike win am again so this mata can rest |
itsMrIke:. Yea valid point but what I am saying is they Neva attribute it to jona but make it look like its purely d idea of Buhari.......#wailer |
they just want d oil...... I stand to b corrected |
front page pls..........waiting to give my FTC speech |
I pity D's girl God I pray she doesn't commit suicide |
y do I have d feeling dat u are an Igbo man...becos recently D's upon stuff seems to b focused on ijaw but Leme gve u benefit of doubt....... as an I jaw man if Biafra comes dia would still be a problem of dominance becos d Igbo are in d fore front of this war and d leaders are Igbo so its only natural dat Dy would want to be in control and dat would not sit well with the ijaws hu like usay is d 4th largest ethnic group( note larger than the Igbo) I can go on and on but Leme just end hia # my opinion |
if this is true then y is all d sai pmb fans on naira land attributing it to him instead of Jonathan......#wailer |
nosah bonny face Isaac |
couldn't read all u said it was too long but I was wondering if u want to go y include akwaibom rivers bayelsa and d likes without consultation with d stake holders or referendum like u Pple say it mks me to wonder if its not selfish reasons Ur adding these States # my opinion it is subject to criticism but pls do not insult me I didn't insult ani bodi and I am not a yelloba |
D's song don old u must b a dbanj fan |
![]() Berrylite:. Its in his name lie mohammed ![]() Berrylite:. Its in his name lie mohammed |


