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Technical Car Terms To Know— Survive A Car Conversation
Common car terms to know explained simply. Ever wondered what those technical car terms 'car people' say are? Learn some interesting car terminology here.
Do you know all those technical car terms that people commonly use? Have you ever thought of learning some automotive terminology?
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You don't necessarily have to go through every nook and corner in an Automotive encyclopedia, to survive a steaming car conversation. But, you just have to know these commonly-used technical car terms, put together in no particular order.
Torque
and
Power
As
per
your
textbooks,
Torque
is
the
measure
of
force
acting
on
a
body
at
a
displacement,
causing
that
body
to
rotate
about
an
axis.
In
engines,
torque
is
the
force
given
by
the
movement
of
the
pistons,
to
rotate
the
crank.
This
process,
when
repeated
‘n' number
of
times,
gives
power.
In general, Torque is the capacity to do work (rotating the crank) and Power is the rate at which this work (how many times the crank could be rotated by repetitive forces acting on it) is done.
Still confused? You must have seen some children playing with a bicycle tyre using a stick. One hit on the tyre moves the tyre forward (Torque). Repeated hits move the tyre even further and faster (Power).
Even more simply, Torque gives acceleration and Power gives Top Speed.
NA
or
Naturally-Aspirated
Engines
Air
is
inducted
into
the
engine
(air
and
fuel
are
needed
for
combustion
to
happen),
only
via
the
suction-force
of
the
piston,
during
the
intake
stroke.
Or,
NA
cars
do
not
have
a
turbo
or
a
supercharger.
Turbocharged
engines
Before
we
start,
please
change
this
wrong
notion
-
Only
diesel
cars
employ
a
turbo.
Some
petrol
cars
also
use
turbos
(Volkswagen
Polo
1.2
TSi,
Maruti
Suzuki
Baleno
RS
etc).
A Turbocharger system uses the pressure of the exhaust gases to rotate a turbine, in turn supplying more air (oxygen is needed for combustion) into the cylinder. In general, turbos are used to maximise output from smaller engines. Turbocharging also contributes to lesser emissions.
Turbo
Lag
Time
taken
for
the
exhaust
gases
to
be
compressed
to
a
higher
pressure,
just
enough
to
rotate
the
turbine.
Supercharger
While
a
turbocharger
takes
power
from
the
exhaust
gases
to
rotate
a
turbine,
a
supercharger
utilises
power
from
the
engine
itself,
via
a
belt
or
a
gear.
In
short,
a
supercharger
acts
as
a
parasite.
Suppose, a 100bhp engine is fitted with a 20bhp supercharger, the total output will not be 120bhp, but lesser. This is because, to run the 20bhp charger some power will be absorbed from the engine (say 5bhp). Hence, the total output will be 100+120-5= 115bhp.
Knock/Detonation
In
petrol
cars,
a
spark
plug
is
used
to
initiate
combustion.
But
when
an
engine
becomes
really
warm,
other
hot
spots
could
form
inside
the
cylinder.
These
points
could
initiate
combustion,
in
addition
to
the
normal
sparking.
The
result
will
be
some
abnormal
vibrations
or
in
the
worst-case
scenario,
engine
failure.
Character
line
An
embossed
line
on
the
side
body
panels
of
a
car,
either
to
add
to
the
aesthetics
or
to
improve
the
aerodynamics
in
some
fast
cars.
Beltline
The
imaginary
line
joining
the
window-section
and
the
lower
body
panels
of
a
car,
when
viewed
from
the
side.
Blipping
the
Throttle
Also
termed
‘Rev-matching',
it
is
the
process
of
matching
the
engine
speed
with
the
wheel
speed
with
inputs
to
the
throttle
pedal,
while
shifting
to
a
lower
gear.
When you are driving fast and have to suddenly slow down the car, you would shift to a lower gear. But, if the car is too fast (wheel speed greater than the speed at which the lower gear, to which you have shifted, is running), and you release the clutch without blipping the throttle, the wheels could lock up.
Some motorcycles employ a 'slipper-clutch' to avoidthis.
Torque
Steer
Usually
observed
in
a
Front
Wheel
Drive
car
(Engine
placed
transversely),
if
the
engine
has
too
much
torque,
the
steering
tends
to
turn
in
either
one
direction
when
the
car
is
floored
hard.
DriveSpark
Thinks!
A
car
is
made
of
many
components,
and
it
takes
quite
some
time
to
learn
about
them.
Learning
about
things
associated
with
driving
is
even
more
challenging,
if
you
are
not
particularly
into
automobiles.
Now
that
you
know
these
important
car
terms,
you
can
easily
survive
a
heated
automotive
conversation.