What is an Engine? and how does it work?
The core of the engine is the cylinder,
with the piston moving up and down inside the cylinder. Most cars have more than
one cylinder (four, six and eight cylinders are common). In a multi-cylinder engine,
the cylinders usually are arranged in one of three ways:
3. Flat (also known as horizontally opposed or boxer)
Different configurations have different
advantages and disadvantages in terms of smoothness, manufacturing cost and shape
characteristics. These advantages and disadvantages make them more suitable depending
on the vehicle the engine will be used for. You can also check out information on
Engines are mainly made up of the following
The spark plug supplies the spark that ignites the air/fuel mixture so that combustion
can occur. The spark must happen at just the right moment for things to work properly.
The intake and exhaust valves
open at the proper time to let in air and fuel and to let out exhaust. Note that
both valves are closed during compression and combustion so that the combustion
chamber is sealed.
A piston is a cylindrical piece of metal that moves up and down inside the cylinder.
Piston rings provide a sliding seal
between the outer edge of the piston and the inner edge of the cylinder. The rings
serve two purposes:
1. They prevent the fuel/air mixture
and exhaust in the combustion chamber from leaking into the sump during compression
2. They keep oil in the sump from leaking
into the combustion area, where it would be burned and lost.
Most cars that "burn oil"
and have to have a quart added every 1,000 miles are burning it because the engine
is old and the rings no longer seal things properly.
The connecting rod connects the piston
to the crankshaft. It can rotate at both ends so that its angle can change as the
piston moves and the crankshaft rotates.
The crankshaft turns the piston's up
and down motion into circular motion just like a crank on a jack-in-the-box does.
The sump surrounds the crankshaft.
It contains some amount of oil, which collects in the bottom of the sump (the oil
We aim to supply engines and gearboxes for all makes of
cars, 4x4 trucks and vans.
The future of engines could be running on other substances
as well as petrol and diesel. One of these maybe
Compressed natural gas where this would be
even more economical.
What is a Gearbox? and how does it
As we know there are various types
of gearbox. We have the standard manual either 4 speed or 5 speed however these
days 5 speed and 6 speed are more common. We then have automatic gearboxes but check
these types out:
The continuously variable transmission (CVT) is a transmission in
which the ratio of the rotational speeds of two shafts, as the input shaft and output
shaft of a vehicle or other machine, can be varied continuously within a given range,
providing an infinite number of possible ratios. A CVT need not be automatic, nor
include zero or reverse output. Such features may be adapted to CVTs in certain
specific applications. CVT transmissions have been refined over the years and are
much improved from their origins. A specific type of CVT is the infinitely variable
transmission (IVT), which has an infinite range of input/output
ratios in addition to its infinite number of possible ratios; this qualification
for the IVT implies that its range of ratios includes a zero output/input ratio
that canbe continuosly approached from a defined "higher" ratio. A zero
output implies an infinite input, which can be continuously approached from a given
finite input value with an IVT. Low gears are a reference to low ratios of
output/input which have high input/output ratios that are taken to the extreme with
IVTs, resulting in a "neutral", or non-driving "low" gear limit.
Most continuously variable transmissions are not infinitely variable.
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