A two-stroke engine is a type of internal combustion engine that completes a power cycle with two strokes of the piston during one power cycle, this power cycle being completed in one revolution of the crankshaft. In a two-stroke engine, the end of the combustion stroke and the beginning of the compression stroke happen simultaneously, with the intake and exhaust functions occurring at the same time. Another form of rotary inlet valve used on two-stroke engines employs two cylindrical members with suitable cutouts arranged to rotate one within the other – the inlet pipe having passage to the crankcase only when the two cutouts coincide.
During operation, the clutch is mechanically driven by a centrifugal clutch, and there is air-cooled 2-stroke engine. In an idling engine, the clutch is moved to no avail. When the engine speeds up, the centrifugal plates move in the clutch along the ground and the chain begins to come together.
The clue is in the name! A chainsaw has two main parts: a saw blade built into a chain, wrapped around a long metal guide bar, and a small, one-cylinder gasoline engine. Chainsaw helmets with visors offer some protection; so too do chainsaw uniforms. Wayne’s Chainsaw Museum: A short video tour of Wayne Sutton’s chainsaw museum in the United States, will hundreds of saws dating from about the 1930s.
The chain is the part of the chainsaw whose components do the actual cutting. The chain’s cutting part is called the cutter teeth or cutting link. Let us look at the cutting links that make the chain such a special component of the chainsaw.
This means, a two-cycle engine has a power stroke every time the crankshaft makes a full rotation and a four-cycle engine has a power stroke every other crankshaft rotation. As you have already learned from the video above, a two-cycle engine, or any engine for that matter, is really just a type of air pump. If your head doesn’t hurt too much from learning how a two-cycle engine works, the following tidbit will amaze you: A saw running at 13,500 rpm will do the above operation 225 times every second.
how chainsaw engine works Related Question:
What kind of motor is in a chainsaw?
Chainsaw engines are traditionally either a two-stroke gasoline (petrol) internal combustion engine (usually with a cylinder volume of 30 to 120 cm3) or an electric motor driven by a battery or electric power cord.
Does a chainsaw engine have valves?
These engines consist of relatively low weights and easy construction thanks to the absence of valves that reduce the weight of these engines. Almost anything, like a chainsaw, is made up of two-stroke engines.
What makes a chainsaw powerful?
Chainsaw Buying Considerations and Cost For DIYers, the primary consideration is power and usage. A more powerful saw will require a gas motor, while a less powerful, more mobile one can be driven by an electric motor.
What is CC in chainsaw?
Engine size is measured in cubic centimeters (cc) or cubic inches. In general, the bigger the number, the more powerful the engine. Most homeowners will do fine with a saw in the 32 cc to 45 cc range. 2. A bigger bar isn’t necessarily better.
How many cylinders does a chainsaw have?
The clue is in the name! A chainsaw has two main parts: a saw blade built into a chain, wrapped around a long metal guide bar, and a small, one-cylinder gasoline (petrol) engine (sometimes an electric motor powered by a cord or battery pack).
What does a decompression button on a chainsaw?
A decompression valve releases some of the compression from the combustion chamber during the starting procedure, making the engine easier to turn over when pulling the recoil rope.
Are there any 4-stroke chainsaws?
Four-cycle (or four-stroke) chainsaws do exist, though they’re usually large commercial models for loggers. You never put oil in the gas of a four-cycle machine.
Who makes STIHL chainsaw engines?
Andreas Stihl AG & Co. listen), German: [ʃtiːl]) is a German manufacturer of chainsaws and other handheld power equipment including trimmers and blowers. Their headquarters are in Waiblingen, Baden-Württemberg, near Stuttgart, Germany.
Can electric chainsaw cut trees?
Although electric chainsaws are smaller and easier to carry, most lack the power and stamina to cut down large trees. If you have big trees on your property that you want to remove or cut into firewood, a gas model is your best bet. Electric chainsaws come in two types: corded and battery-powered.
How big of a tree can a 20 inch chainsaw cut?
A good rule of thumb is that the diameter of the trees you cut regularly should be no more than twice the length of the bar on a chainsaw. That means a 20-inch chainsaw can handle a 36-inch tree (remember, effective cutting length is roughly -2 inches of the bar length).
Does CC matter in chainsaws?
Power, measured by cubic centimeters (cc), differentiates chainsaw engines. A larger engine with 65 cc generates more power, which is useful when sawing through tough trees. Smaller engines with just 31 cc, meanwhile, are all you need to trim your hedges or slice thin, wooden boards.
Who makes the most powerful chainsaw?
The new STIHL MS 881 is the world’s most powerful chainsaw in production today. Following on from the highly regarded MS 880 chainsaw, which was a favourite of foresters, the arboriculture industry and saw-mill operatives, the MS 881 was designed with the largest timber jobs in mind.
How heavy is a chainsaw?
How Much Does A Chainsaw Weigh? On Average, a chainsaw weighs between 10 to 15 pounds. However, some small electric chainsaws can weigh as low as 6 pounds while some of the larger gas chainsaws can go up to 20 pounds. Electric chainsaws are smaller and compact in build, so they usually weigh less than the others.
What can a 16 inch chainsaw cut?
16 chainsaw would cut through a 14″ tree diameter. 10 inch chainsaw for 8″ in diameter. 6 inch chainsaw can cut a 4″ diameter.
How big of a tree can a 16 inch chainsaw cut?
Felling medium trees – 16” to 18” Cutting down medium size trees with a trunk of about 14″ to 16” will require a larger chainsaw of about 16″ to 18” to fell the tree in one easy pass.