Automobile terminologies

there's a chart here, couldn't beleive sx4 is on alto's platform
http://en.wikipedia.org/wiki/Crossover_SUV

what?! :shock: , SX4 on alto's platform? how is that possible?

napster wrote:what?! :shock: , SX4 on alto's platform? how is that possible?

yes i couldn't beleive it too, but then i just remembered the sx4 hatchback i saw in the parking lot when i went abroad last time.

now this will be more digestable i hope.

yeah but alto is such a small car, tiny

BTW, we forgot to explain platform
it may be the foundation on which the vehicle is build or different parts are attached

abhinavgupta wrote:It is not based on the civic in any sense.
It has better dynamics than the civic.

yes, it is abhinav. have a look at this:
http://www.cargurus.com/Cars/Overview-d589-Honda-CR-V.html

it clearly says:

The CR-V is built on the Civic platform, which is a big plus for dependability, economy, and reliability.

yes thats right. the CR-V is indeed built on Civic platform. platform doesnt mean chasis but the basic structural foundation of a car.

Anyone can explain
Brake Horse Power
Cubic Capacity
Torque

Brake Horsepower(bhp): an engine's horsepower without the loss in power caused by the gearbox, differential, etc. here brake means a device used to load an engine and hold it at a desired RPM.

Cubic Capacity: its the engine or also the addition or sum of the volume swept out by all the pistons in the cylinders.

Torque: it is the twisting effort generated by any engine. torque is not related to turning or motion of the wheels but its the force or weight that the engine applies on the wheels.

cubic capacity is the area available in the cyliner when the piston is completel lowered down, and more space in the cylinder, the more cc you have, and also more power
Torque is some thing due to which things can be rotated - learnt this in my schooling days, not sure if this implies to automobiles

napster wrote:cubic capacity is the area available in the cyliner when the piston is completel lowered down, and more space in the cylinder, the more cc you have, and also more power
Torque is some thing due to which things can be rotated - learnt this in my schooling days, not sure if this implies to automobiles

yes napster its the same torque that we learnt in school

which way is it applied to automobiles?? :stupid:

napster wrote:which way is it applied to automobiles?? :stupid:

i already explained that above.

napster wrote:cubic capacity is the area available in the cyliner when the piston is completel lowered down, and more space in the cylinder, the more cc you have, and also more power

this is true on a general basis.
but i would like to add that - power output also depends on various other factors such as ignition timing, compression ratio & fuel injection systems. in diesels, when we compare engines with same cc, a CRDi makes more power than DI, & DI makes more power than IDI.
for example, safari 3.0 makes only 115 bhp but safari 2.2 makes 140 bhp. scorpio 2.6 makes 115 bhp but scorpio 2.2 makes 140 bhp (detunes to 120 bhp).

@raj, i gave that definition just in a regular scenario, i dint go this deep :)

napster wrote:@raj, i gave that definition just in a regular scenario, i dint go this deep :)

yes, i understand that. i never meant you are wrong. i just added some points there.

Its true, we guys think bigger the engine, more horse power. but power does not always depend on the cc.A car having More torque or B.H.P does NOT mean it is a road burner.
everything relies on Power to weight ration of a given vehicle, calculated by dividing the Horsepower to the weight. SIMPLE!
NOW COMING BACK TO THE CUBIC CAPACITY TOPIC:A CRDI ENGINE MAKES, MORE POWER THAN A DI-D BECAUSE AS THE TERMS INDICATE, CRDI(COMMON RAIL DIRECT INJECTION), THIS SYSTEM HAS A RAIL SORT OF MECHANISM WHICH FEEDS THE CYLINDERS AT THE SAME TIME, WHEREAS IN THE DI-D(DIRECT INJECTION DIESEL) THE AIR AND FUEL ARE MIXED INSIDE THE INJECTOR ONLY, PROVIDING MORE POWER AS COMPARED TO THE OLDER DIESELS(IDI- INDIRECT DIESEL INJECTION) WHICH REQUIRED A TURBOCHARGER TO PRODUCE MORE POWER.
NOW YOU C WHY A TUCSON CRDI PRODUCES MORE POWER HAVING A SMALLER ENGINE(2.0L) AS COMPARED TO TATA SPACIO(3.0L)!! 8)

raj_5004 wrote:

napster wrote:@raj, i gave that definition just in a regular scenario, i dint go this deep :)

yes, i understand that. i never meant you are wrong. i just added some points there.

i know that dude, i dint want to say that your wrong either, i just made it very simple in words and dint get into deep technical explanation, so i said more cc more power in a casual way

anyone cylinder, valve
6 cylinder, 12 valve , 16 valve etc

Cylinder is the thing that encloses piston and in which Piston travels.

I think valve is the thing that sends in the fuel to the combustion chamber.

12 valve, 16 valve, depends on the number of cylinders. in 3 cylinder engine, 12 valves is 4 valves per cylinder.

cylinder is the cavity in which the piston moves up & down. an inline 4 engine has 4 cylinders, V6 has 6, V8 has 8...

there are 2 types of valves- inlet valve & exhaust valve. inlet valves are bigger than exhaust valves. inlet valves are the route through which air-fuel mixture enters the cylinders (to be burned) & after combustion, exhaust gases move out (to the exhaust) through the exhaust valve. these valves are lifted & closed at the right time with the help of camshafts. nowadays, it is done electronically too, with the help of engine ECU (variable valve timing- VVTi).

in cars with 4 valves per cylinder, two will be inlet & 2 will be exhaust, but in cars with 5 valves per cylinder, 3 will be & 2 will be exhaust. a 16-V (16 valve) 4 cylinder engine means 4 valves for each cylinder, 2 inlet & 2 outlet.

As Raj has already described these terms, I'm putting up a picture describing the 4 strokes in a cylinder.


(Source)

simple and good explanation.
now anyone explain different types of suspension.
like-2wd independent,
4wd independent,
coil spring,
torsion bar,
multi link,
mcpherson struts,
double wishbone,
trailing arm ,
twin I-beam,
moulton rubber,
leaf spring,
de dion
hydrolastic etc
if possible examples too

fihast, i feel suspension systems are very complicated & cannot be explained here.

ok, it is complicaed indeed.