What Do You Mean By Four Stroke?

What is a 4-stroke diesel engine?As the namepiston reaches
suggests, these engines work on reciprocatingslightly beyond the top dead center, the fuel has
actions of pistons. One stroke means one linearacquired the
motion of thetemperature high enough for ignition.The fuel is
piston in one direction. When the piston moves insupposed to burn so fast as to explode. So there
the oppositeis
direction, that is counted as another stroke.For ano point in injecting it more than it can burn. If
4-stroke engine, the piston has to move up, thenthe fuel is
down,not able to catch fire, it will remain in the piston
then up again, and then down again to completeas unburnt
one cycle of thefuel.So the timing of the fuel injection will stop
engine. In that 4 stroke of the piston, theslightly after the
crankshaft will havepiston has reached top dead center.The explosion
turned 2 revolutions.The 4 strokes of the pistoninside the piston is the driving force for the
is to complete 4 stages of theengine. It will create the momentum to turn the
combustion cycle. As you might have known, inengine for the
order for a firenext 2 cycles.The next cycle is the exhaust
(or explosion) to occur to power the engine, westroke. In this stroke, all the
need a fuel, aproducts of combustion is driven off from the
heat source, and oxygen coming together at thepiston top. The
same time.At the start of the cycle, air must beexhaust valve(s) will have opened to allow the
introduced into thecombustion gases
combustion space inside the cylinder. In theto escape. In an ideal engine, these include carbon
4-stroke (alsodioxide gas,
called 4-cycle) engine, this is the air intake stroke.water vapor and excess air.However, in actual
Thepractice, the combustion may not be so perfect.
piston moving down will suck fresh air into theCarbon particles, unburnt fuel particles, lubricating
cylinder throughoil
the air inlet valve(s) that is opened.The nextparticles, sulphur dioxide, carbon monoxide, and
stroke is the compression stroke. With all theash may also be
valvesdischarged. As the piston will not be able to reach
at the cylinder head closed, the piston moves upthe the
again. The aircylinder head perfectly, not all the exhaust gas
becomes compressed to a very high degree. Socan be driven
high that theoff completely. A small quantity of these exhaust
temperature of the air becomes sufficiently hotproducts will
to ignite aremain inside the cylinder even as the next cycle
finely sprayed fuel mist on contact.That isstarts.Once the exhaust gases have been driven
precisely what happens. Before the piston reachesoff, the next stroke
thestarts. This is the air intake stroke that we
top-dead center (the maximum height the pistonstarted off with.
can reach beforeThe cycles repeat itself as the engine runs
coming down again), the fuel is injected as acontinuously.Obviously the more the exhaust gas
very fine mistcan be driven off, and the
into combustion space at the piston top. In ordermore oxygen content the cylinder can contain,
for this fuelthe more efficient
to be injected into the highly compressed airthe combustion of the fuel can be achieved.This
inside the cylindercan be achieved by supercharging and cooling the
the fuel itself must be at a higher pressure. Thisair intake.Well folks, that should boost up your
is achieved bypower! Meanwhile look for
a fuel pump.There is a reason for injecting thethe best tools for the job.Many years of working
fuel slightly before theexperience in Marine, Facilities,
piston reaches top dead center. The fuel takesConstruction has given the author material for
some time to reachwriting e-books
the temperature that it can burn. So the timingand articles related to engineering, and
of the injectionmanagement.
of the fuel is adjusted so that by the time the