1496 cc Means 1.5 enigine?

hey can anyone tell me if the 1.2, 1.3, 1.4, 1.5 & 1.6 and so on has a direct correlation with the cc of the car? 1.2 means 12 valves engine.. and 1.6 means  16 valves.. my accent is 1496 cc.. does that mean it is 1.5 enigine.. kindly elaborate

thnx

Engine Capacity or displacement in litre (L) or cubic centimeter (cc) has nothing to do with the number of valves. Engine Displacement is the Total Swept Volume of Engine which is measured in terms of cubic centimeter (cc) or litre (L). You might be knowing that engine consists of 2 or 3 or 4 or 6 or 8 or 12 cyllinders  If the bore (inner diameter of cylinder is "d", stroke length is "L" and the number of cylinders is "n" then the displacemnt is caculated by formula [pi x {(d x d)/4} x L x n]. You can take the value of "pi" as 3.14 or 3.1416. If you want cc , then d and L have to be in cm. If d and L are in mm, then above formula has to be divided by 1000 to get cc.

Litre is equivalent to 1 cubic deci metre or 1000 x cc.

While indicating engine displacement in litre, cc is rounded up or down to the nearest 100 and divided by 1000. Like Ritz engine is 1197 cc is 1197 or 1.2 L, Old Wagon R engine is 1061 cc or 1.1 L, Santro is 1086 cc or 1.1 L, Spark is 995 cc or 1.0 L, i20 is 1396 cc or 1.4 L etc.

Wow, nice meticulous answer, Mahesh! Keep it up!

Thnx

So for power speed is CC important or bhp?

Generally there is a correlation between cubic capacity and power delivered by the engine. But depending on the engine design, and the 'recentness' of the engine design, the power for a given cubic capacity can vary greatly. This is due to design choices as well as continual improvements in the IC engine technology.

Ultimately the power delivered is important for speed. bhp is just a unit for power delivered. However if the power/cc ratio is too high, it may have some implications on the engine longevity, because the engine is working more, and the stresses it experiences are higher than a comparable engine that delivers less power.

Thnx Krishna..

Nicely explained by Mahesh

For all Internal combustion engines whether SI or CI , this is the effective swept volume in the PV diagram.It is a function of bore of the cylinder, effective stroke and no. of cylinder.If all these have centimeter as unit then effective swept volume will also has cubic centimeter as unit.

But 1.5 doesnt exactly mean its 1.5 liter or 1500cc engine. its only a whole no. nearer to the calculated volume.

This effective swept volume is one of the deciding factors of peak power output. More the effective swept volume more will be the power output though tech involved in efficient burning of the fuel again plays an important role.