4K High-Speed Camera Reveals The Inner Workings Of A Combustion Engine (15 gifs + 1 video)

Posted in INTERESTING       15 Jul 2020       3142       4

Let’s slow the bang inside your engine to see the split-second that moves your car.

 

Matt Mikka took a small 3-horsepower flathead engine…

 

…then hand built a glass head…

 

…and used a ultra high-speed camera to capture awesome footage.

 

Seeing the process at 4K (4,000 Frames per Second)

Is pure eye-candy.

 

Izismile Video Collection

So let’s fire this baby up and learn the basics.

 

Most people understand that gas lights and the explosion turns the tires.

Here’s what you’re looking at…

 

FOUR-stroke Engine

This simply means, 1 full cycle has 4 steps.

 

Step 1 Intake valve opens – letting air and fuel into the chamber while the piston is moving DOWN

Step 2 Piston moves UP – this compresses the fuel

Step 3 BOOM – fuel is ignited, forcing the piston DOWN

Step 4 Exhaust valve opens – finally the piston moves back UP which forces the exhaust out

 

Now let’s change up the fuel from Regular Gasoline to clear Rubbing Alcohol.

 

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LESS BOOM

This shows combustion in a “Lean state”.

Too much Air too little flammable fuel.

 

Rubbing Alcohol – unburned gas leaving the port

 

Compare the GIF Above/Below

This shows combustion in a “Rich state”.

Why

Because this time Acetylene – colorless gas – is used for a big BOOM

 

Lean state = Less power but better Miles-per-gallon

Rich state = More power but a lot more pollution

Which one do you think Dragster engines use?

Obviously, more BANG.

Now for the car guys/gals???

Which one burns HOTTER???

 

For everyone else, just here for the basics;

I hope this gave you a basic once-over on how engine combustion works.

 

Check-out Matt Mikka’s full video ABOVE.



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4   Comments ?
0
1.
Irene 1 weeks ago
I need so clarification here. I always thought piston engine need combustion on every stroke, but in the videos it shows combustion maybe every other or 4th stroke. Am i missing something here?
       
2
2.
Cole 1 weeks ago
There are 4 strokes, 2 up and 2 down.
1 - air/fuel intake
2 - compression
3 - ignition/power
4 - exhaust
repeat many times.
       
2
3.
Alzada 1 weeks ago
Simplified:
Suck
Squeeze
Bang
Blow

And lean burns hotter...
       
0
4.
Vanburen 1 weeks ago
Irene, a 2 stroke (or cycle) engine does what you are thinking of- a power stroke every revolution of the crankshaft. Intake and exhaust are via ports in the sides of the cylinder. Lubricating oil is mixed with the fuel and is burned when the fuel is consumed.

What is depicted here is a 4 stroke (or cycle) engine which uses exhaust and intake valves, and a power (combustion) stroke occurs every other revolution of the crankshaft. Lubricating oil is not mixed with the fuel, the lubricating oil is in the crankcase.

2 stroke engines are less fuel efficient and pollute more, but have fewer parts and produce more power relative to the weight of the engine.
       
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