• jaspal rautela

MemberJul 15, 2012

## What does CC in Engine Capacity Mean?

When we say that a car has a 1150cc engine, what does it mean? Why do people keep referring to the cc when looking for good vehicles? Please explain this term.

Thank you for your question. Let me explain the term “CC” in relation to the automobiles. Let’s start.

The term “cc” stands for “cubic centimeters”. In the context of automobile-engines, it indicates the total volume of all the cylinders in an engine. For example, when we say a car has a 1150cc engine, it means that the total volume of all its cylinders is equal to 1150 cubic centimeters.

Let’s go a step further and understand the origin of the term cc and why it’s widely used in the locomotive world.

## Origin and Significance of the Term CC in Engine Capacity

The term cc, denoting cubic centimeters, originated from the international system of units, also known as the metric system.

It is a unit of volume that is commonly used in many fields. In the automotive world, this term is used to measure the displacement or the size of the engine.

This concept dates back to the early days of the internal combustion engine when inventors and engineers were seeking a standard way to measure and compare engine sizes.

As early combustion engines utilized pistons that moved within cylinders to create power, the total volume displaced by these pistons became a logical choice for this measurement.

It's important to remember that a cylinder's volume is not only dependent on its physical dimensions but also on the distance the piston travels within it (known as the stroke).

An engine with a greater total cylinder volume will generally have the potential to generate more power, as it can burn more fuel during each engine cycle.

## CC in Engine Capacity: It’s All About Size and Power

A common misconception is that the larger the engine capacity, the more powerful the vehicle. While it's generally true that larger engines can produce more power, this is not always the case.

Power output depends not only on size but also on the engine's efficiency, design, fuel type, and several other factors.

For instance, a 2000cc engine could potentially be more powerful than a 2500cc engine if it has a more efficient design or uses a different type of fuel.

Advancements in engine technology, such as turbocharging, have allowed smaller engines to produce much more power than they could in the past.

That said, engine size, expressed in cc, is still a crucial aspect to consider when evaluating an engine's potential performance.

Larger engines, generally speaking, have greater torque, which is the force that helps a vehicle start moving from rest and helps it climb hills. A high torque engine can also provide better towing capacity.

## Why CC is Important for Vehicle Buyers

Engine capacity is important to potential vehicle buyers for a number of reasons. First, it gives an indication of the vehicle's potential power and performance.

Many performance-oriented buyers may seek vehicles with larger engines, as these typically offer more power and a more engaging driving experience.

Engine capacity can also have implications for fuel economy. Generally, larger engines consume more fuel, as they need to burn more fuel to operate.

However, advancements in engine technology and design mean that this isn't always the case, and many modern, smaller engines are able to deliver excellent fuel economy while still offering good performance.

Lastly, in many countries, the engine's capacity, measured in cc, can impact the taxation and insurance costs for a vehicle.

Typically, vehicles with larger engines incur higher taxes and insurance premiums, as they are seen as being more powerful and potentially more risky to drive.

## The Evolution of Engine Capacity Measurement

While cubic centimeters (cc) has long been a standard measure for engine capacity, it's not the only unit of measurement used. In the United States, for example, engine size is often expressed in liters (L) rather than cubic centimeters.

For instance, a 2000cc engine would be referred to as a 2.0L engine, as there are 1000cc in a liter.

In the early days of automobiles, engines were much less efficient, so having a larger engine capacity was often necessary to achieve sufficient power.

As technology has evolved, engine design has improved, and smaller engines can now produce power outputs that were once only possible with much larger engines.

Today, engineers and manufacturers strive for the optimal balance of power, fuel efficiency, and emissions in their engine designs.

The term cc in engine capacity refers to the total volume of an engine's cylinders, which can give an indication of the engine's potential power output and fuel consumption.

It's a valuable piece of information for vehicle buyers, but it's important to understand that it's just one factor among many to consider when assessing a vehicle's performance.

With the continuous advancements in engine technology, the correlation between engine size and power is becoming less straightforward, making it even more critical for consumers to have a broader understanding of what goes into creating the power and performance of a vehicle.

Let me know if this helps you understand the term “cc” and its significance. If you have any specific questions about the topic, I’ll be happy to help.

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Replies
• MemberJul 15, 2012

"cc" stands for cubic centiliter. it is a unit of measure for volume.

As far as engines are concerned , then cc indicates the volume of the cylinder bore(in case of single cylinder engines).

as for multicylinder engines , the numerical value of cc indicates the sum total of all the cylinders(though the volume of individual cylinders may not be mentioned).
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• MemberJul 20, 2012

hey guys feel free enough to post anything here
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• MemberJul 21, 2012

jaspal rautela
A car have 1150cc engine, what does it's means??
zaveri
"cc" stands for cubic centiliter. it is a unit of measure for volume.

As far as engines are concerned , then cc indicates the volume of the cylinder bore(in case of single cylinder engines).

as for multicylinder engines , the numerical value of cc indicates the sum total of all the cylinders(though the volume of individual cylinders may not be mentioned).
Since 'cc' stands for cubic centimeters, everyone regards it to be the volume of cylinder. But actually it is the Displacement volume of a cylinder(in case of single cylinder engine). In other words it is the volume of the piston travel from TDC to BDC. It does not includes the clearance volume or the volume of the combustion chamber. The cylinder volume for a single cylinder engine is higher than the 'cc' of the engine.

A 1150cc engine basically means that the sum of the displacement volumes of all the cylinders is 1150cc.

Also the 'cc' specification for any engine is rounded off to nearest value. It is never exact. For example, Maruti 800 had 796cc engine but it was always regarded as an 800cc engine car.
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• MemberJul 21, 2012

Y do customers always refer high cc engine..?
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Tagging #-Link-Snipped-# , he might tell you why people opt for higher CC engines 😀
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• MemberJul 21, 2012

venkatking.v
Y do customers always refer high cc engine..?
Actually it is a general notion among people that a higher cc engine is a better one. This is because not everyone is a mechanical engineer or knowledgeable of IC engines. Even a lot of mechanical engineers don't know about it.

Though there is no direct proportionality, but a higher cc engine will produce more power output and will have less fuel economy. So if fuel economy is major priority then a lower cc engine is more appropriate and if power is the major priority then a higher cc engine is required.
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• MemberJul 21, 2012

oh yes i forgot to mention that the clearance volume is not counted.

Since most customers are laymen, they believe that higher the cc, the higher will be the power as well as the overall vehicle performance.

but they are right only as far as the power is concerned. cc does not in any way affect vehicle performance, and besides higher cc engines are fuel guzzlers
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• MemberJul 26, 2012

Keep in mind that it is only typically that higher displacement engines are less fuel efficient but that is not always the case. Fuel/air mapping, gearing and also application can have a large impact in both efficiency and performance. So does the layout. A 650 cc single will have difference performance characteristics than a 650 cc twin or inline four as an example.
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• MemberAug 17, 2016

BMW M4 f82 coupe, Bi-turbo, 6cyl, 431hp, 550nm
what does Cyl, Hp and nm do in cars ?
Speed of car depend on what ?
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• MemberAug 17, 2016

Cyl- Denotes cylinders- No of cylinders present in a engine to produce described output.
Hp- Horsepower(BHP-Brake horse power) power output of the engine or max power that can be achieved by a engine.
Nm-Newtonmeter is an SI unit for denoting power output same as HP.

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• MemberSep 12, 2016

zaveri
oh yes i forgot to mention that the clearance volume is not counted.

Since most customers are laymen, they believe that higher the cc, the higher will be the power as well as the overall vehicle performance.

but they are right only as far as the power is concerned. cc does not in any way affect vehicle performance, and besides higher cc engines are fuel guzzlers

When you say that higher cc engines are fuel guzzlers, you compare them with lower cc engines. But higher cc engines are producing greater power too. An ideal comparison point should be fuel consumption versus IMEP. Higher cc engines have greater surface area (hence lose a lot more heat to the surroundings than lower cc engines) and greater contact area with the piston (higher FMEP than lower cc engines) that eat away from the IMEP. But again, they have greater fuel injected and hence produce more power too! In short, my point is that when its blatantly said that higher volume engines are fuel guzzlers or (worse) inefficient, we do not capture the reality. Their purpose is to produce greater power and you cannot produce more power without providing for a greater fuel intake!

As a side-note, cc affects vehicle performance immensely! It is not clear what you intended to imply there.
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• MemberOct 1, 2016

jaspal rautela
When we say that a car has a 1150cc engine, what does it means? Why do people keep referring to the cc when looking for good vehicles? Please explain this term.
CC means cubic cylinder.its about an engine size.whenever your engine cylinder size (cc) increases your vehicle speed also increases.if you see TVS 50 having 50cc so the speed of vehicle was low.but for example pulsar 220RS means its having 220cc so the speed of vehicle having more.
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• MemberOct 17, 2016

swaminathansami
CC means cubic cylinder.
Nope, that is not correct.

swaminathansami
whenever your engine cylinder size (cc) increases your vehicle speed also increases.
Incorrect again. Compare Marine engines (as an example #-Link-Snipped-#) versus the pulsar 220 cc, in terms of speed (750 rpm versus 8500 rpm). Then compare them in terms of power (3600 kW versus 16 kW).
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I found a really interesting GIF <a href="https://en.wikipedia.org/wiki/Engine_displacement" target="_blank" rel="noopener noreferrer">Engine Displacement</a>

Engine capacity is also known as Engine Displacement.

One complete cycle of a four-cylinder, four-stroke engine. The volume displaced is marked in orange.

Therefore, Engine CC means the unit of measuring the volume of a cube having size 1 cm X 1 cm X 1 cm, specified in cubic centimeters (cc or cm3).

What is CC in Bike or Car?

Whenever you go to buy a new car or a new motorcycle, you ask for the engine capacity. Why is that? Because the Engine CC determines the various outputs of the vehicle like torque, mileage and engine power.

The capacity of the engine is the volume of the cylinder. Imaging a big pot. The bigger the pot, the more water it can accumulate. Similarly, the bigger the cylinder volume, the more is its capacity to accommodate air-fuel mixture for burning.

If anyone has a good image to share the actual diagram, please share it below.

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• MemberSep 22, 2018

?

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