Suck, Squeeze, Bang, Blow Engine Cycle
44sHumorous explanation of engine strokes grabs attention and educates in a memorable way.
▶ Play ClipAI Summary
This video explains the fundamental differences between turbochargers and superchargers, both of which force more air into an engine to increase power. It covers how each system works, their respective advantages and disadvantages, and offers advice for choosing between them when buying or upgrading a car.
Chapters
[00:00]
Introduction to Forced Induction
Superchargers and turbochargers are both used to increase engine power by forcing more air into the combustion chamber, but they achieve this in different ways.
[00:44]
Four-Stroke Engine Basics
A normal engine operates on four strokes: suck (intake), squeeze (compression), bang (combustion), and blow (exhaust). More air and fuel create a bigger bang, resulting in more power.
[01:14]
How a Turbocharger Works
A turbocharger uses exhaust gases to spin a turbine, which forces more air into the engine. It is more efficient but suffers from turbo lag—a delay in power delivery at low RPMs.
[01:28]
How a Supercharger Works
A supercharger is belt-driven directly by the engine, providing instant power. However, it is less efficient because it saps some engine power to operate.
[02:00]
Turbo Lag vs. Instant Power
Turbos have a delay (turbo lag) because exhaust flow is low at low RPMs, while superchargers deliver power immediately. Both produce distinctive sounds.
[02:55]
Upgrading vs. Buying a Car
For retrofitting, turbos are generally easier, cheaper, and offer more power potential. For production cars, the choice is subjective; test driving both is recommended.
Turbochargers are more efficient and have greater power potential, but superchargers provide instant throttle response. The best choice depends on personal preference and the specific vehicle application.
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Mentioned in this Video
Study Flashcards (5)
What are the four strokes of a normal engine?
easy
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What are the four strokes of a normal engine?
easy
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Suck, squeeze, bang, and blow.
00:44
How does a turbocharger force more air into the engine?
medium
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How does a turbocharger force more air into the engine?
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It uses exhaust gases to spin a turbine, which forces more air into the intake.
01:14
What is the main disadvantage of a turbocharger?
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What is the main disadvantage of a turbocharger?
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Turbo lag – a delay in power delivery because exhaust flow is low at low RPMs.
02:00
How does a supercharger get its power?
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How does a supercharger get its power?
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It is belt-driven directly by the engine, which robs some horsepower to operate.
01:28
Which forced induction system is generally easier to retrofit and has more power potential?
hard
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Which forced induction system is generally easier to retrofit and has more power potential?
hard
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Turbochargers.
02:55
💡 Key Takeaways
⚖️
Forced Induction Basics
Establishes the core concept that both systems force more air into the engine to increase power.
📊
Turbocharger Mechanism
Clearly explains how a turbo uses exhaust gases to spin a turbine, highlighting its efficiency.
01:14
📊
Supercharger Mechanism
Describes the belt-driven nature of a supercharger and its instant power delivery.
01:28
💡
Turbo Lag vs. Instant Response
Directly compares the key trade-off between efficiency (turbo) and immediate power (supercharger).
02:00
🔧
Practical Advice for Buyers
Provides actionable guidance: turbos are easier to retrofit, but personal preference matters for production cars.
02:55Full Transcript
[00:00] Today at ShopDap.com, we talk about superchargers versus turbochargers. When you say the word supercharged or turbocharged to a regular person,
[00:14] they may not know why it's good, but they know it's good. The words are so synonymous with more power that they're being used on cars that don't even have
[00:28] turbos or engines. Whether you're looking to buy a car that already has one or looking to upgrade your naturally aspirated engine, the age-old question remains which one is better. Normal engine has four strokes. Suck, squeeze, bang, and blow. While these sound like your late-night
[00:44] internet history research, they actually are instructive to tell you how an engine works. First, you suck the air into the engine, then the piston comes back up and squeezes the air fuel mixture, then your spark plug ignites the mixture and bang. Your piston is sent down only to
[00:59] return back up to blow out the spent exhaust gases. To get more power out of your engine, you need more air and fuel to make a bigger bang. Superchargers and turbochargers both operate under the same principle, which is force more air in to make a bigger bang. The difference is how
[01:14] they accomplish it. A turbocharger uses shaft with two spinny wheels attached to it. These spinny wheels are separated by the hot and cold side of the turbo. The hot side of the turbo is attached to the exhaust and the cold side of the turbo is attached to the intake. The turbo uses spent
[01:28] exhaust gases coming out of the engine to spin the turbine of the turbo, which allows it to force more air into the engine. A supercharger in our case uses two twisty shafts that are attached to a pulley, that pulley is bell-driven and spins the two twisty shafts together forcing more air into the engine.
[01:43] Let's talk about advantages and disadvantages. Turbos are more efficient. This is because they use exhaust gases which are a byproduct of the combustion process in an engine to drive them. The downside of this is that the power is not instant due to what's known as turbo lag. Turbo
[02:00] takes time to spool. This is because the exhaust gases coming out of the engine are not going fast enough at low engine RPMs. The advantages of the turbo are that is more efficient, which also means has more power potential, but the downside is that it takes more time to make power. Also,
[02:16] they make cool noises. Superchargers have instant power. The second you match your foot to the floor,
[02:29] it's time to go. But that immediate response comes at a cost, which is efficiency. Since superchargers are bell-driven, they rob horsepower from the engine to allow you to turn this pulley.
[02:43] And while a supercharger is a giver, it's a giver and a taker. They also make cool noises.
[02:55] When it comes to upgrading, a naturally aspirated engine with one of these, there's a pretty clear choice. Turbos are used on more production vehicles, are generally easier to retrofit and have more power potential. While superchargers are used on less production vehicles, are more complicated
[03:11] to retrofit to a vehicle, and since they're less efficient, have less total power potential. This gives turbos the edge in both ease of installation, cost, and power potential. When it comes to buying
[03:23] a car with one of these, it's really up to you. The advantages of a turbo over a supercharger on a production vehicle are not going to be something that would make me select a turbo vehicle over a supercharger vehicle or a supercharger vehicle over a turbo vehicle. And because the number
[03:37] of choices for supercharger cars are so limited, it would not make me shy away from a car that has a supercharger. But most likely, you're going to end up with a turbocar. Since there aren't that many supercharger cars on the market, we have an all-track with a 1.8-liter turbo engine and an S4 with a
[03:51] 3-liter supercharger engine. They both have an awesome advantage to them, but my advice would be test drive some, see how you like them. Thank you so much for watching. If you like this video, be sure to give it a thumbs up and subscribe for more like it.