Two-Stroke | How Engine & Carburetor Work Together | Very Unique. (by Craig Kirkman)

* VISUALLY EXPLAINED

An engine and a carburetor work together to provide the engine with the proper air-fuel mixture it needs for combustion and, subsequently, to produce power. The carburetor is a crucial component in this process as it's responsible for delivering the right amount of fuel to the engine based on the amount of air entering the engine.

Here's how the engine and carburetor collaborate:

Air Intake: The process begins with the engine drawing air in through the air filter. The air filter ensures that the air entering the engine is free from dust and debris, which can harm the engine.

Mixing Air and Fuel: Inside the carburetor, the air intake mixes with a precisely metered amount of gasoline, creating an air-fuel mixture. The carburetor has several components, including the venturi, throttle valve, and fuel jets, that work together to control this mixture.

Venturi Effect: As air flows through the carburetor's venturi (a constricted section of the carburetor), it accelerates, creating a low-pressure area. This low-pressure area draws fuel from the carburetor's float chamber into the airflow.

Throttle Control: The throttle valve, operated by the driver via the accelerator pedal or throttle lever, controls the amount of air allowed to enter the engine. When the throttle is wide open (full throttle), more air enters the engine, and the carburetor provides a correspondingly greater amount of fuel.

Combustion: The air-fuel mixture is drawn into the engine's cylinders during the intake stroke. In a four-stroke engine, the intake valve opens to allow the mixture to enter, and in a two-stroke engine, the process is slightly different but still involves the intake of the air-fuel mixture.

Ignition: Once inside the cylinder, the mixture is compressed by the piston. At the right moment, a spark plug ignites the mixture, causing a controlled explosion.

Power Stroke: The explosion drives the piston down the cylinder, creating mechanical energy. This energy is then transferred through the crankshaft to produce rotational power, which drives the wheels (in a car) or the chain (in a chainsaw), for example.

The carburetor plays a crucial role in ensuring that the engine receives the proper air-fuel mixture for efficient combustion and optimal performance. The correct ratio of air to fuel is essential for an engine to run smoothly and produce power effectively.

I have included this video to show a little more clearly and concisely how a two stroke cycle engine works together (in situ) with its carburettor.

I do already have a video of this kind that I uploaded a few years ago but this video is a little more updated and is more to the point!

I hope you find it beneficial

Many thanks indeed

Craig Kirkman (Owner and Creator of the 'The Repair Specialist' Channel)

#EngineAndCarburetor #WorkingTogether #AirFuelMixture #EnginePerformance #CarburetorFunction #InternalCombustionEngine #FuelDelivery #MechanicalSystems #PowerGeneration #FuelEfficiency #AirIntakeSystem #ThrottleControl #VenturiEffect #CombustionProcess #EnginePower #Carburetion #MechanicalEngineering #FuelMetering #EngineCombustion #CarburetorComponents

[TheRepairSpecialist]

All Episodes -for 2-Stroke Carburetors Here. Thanks. Craig:

[budgillett]

I’m a fat, red faced, white haired, old geezer who is a newbie to the chainsaw world and I’ve learned soooo much from your videos! Your animated diagrams coupled with your verbal instructions are absolutely sensational! I just don’t have the words to be able to adequately express how terrific your presentations are! Thank you from a grateful student country in south central Nebraska wishing you God’s very best.

[JOEZEP]

I just forwarded your video to another friend of mine.

[jparra]

Excellent video.  I learned a lot.  Thanks.

[xx]

Thanks for all the great vids. Assuming theres no leaks in the crankcase seals ect, does a worn engine effect the pulse amount to the pump and trying to overcome the spring pressure meant for a healthy engine with more pulse pressure or will the pulse be enough even if engine worn or not?

[aliveli]

why do you locate different place the h and l valves in carb, your other videos shows h valve connected with main jet orifice..

[davidkuehl]

I am a little confused. What is the reed valve? I know the old two strokes used them but can't be say I recollect them now. I do enjoy your videos and they help me slot.