what come in groups of four
com-fort-ab-le has four syllables.
Absolutely; a parallelogram is a form of quadrilateral, in that it has four sides. If the four sides come in two sets of parallel lines, you have a parallelogram.
Come on unless you're four this should be easy as pie. In on pound there's five 20 P's so times that by four is twenty. You can by twenty lollies
As a solution to the four fours problem (using the number four no more than four times to come up with the solution, 31 is equal to (4!+4)/4+4!
I have a 149 cc engine on my lawnmower and it has ( 1 ) piston
Intake, Compression, Power and Exhaust
Neither a four stroke nor a two stroke have a bigger piston. It all depends on the size of the engine and how it is built. A 250 four stroke will have the same sized piston that a 250 two stroke would if the bore size is the same. Cc is calculated by bore x stroke (how far up and down the piston moves) so if a 250 four stroke has a stroke of 3.00 inches and a 250 2 stroke has a stroke of 3.00 the piston will be the same size. The only difference between a 2 stroke and four stroke is how the engine works. A 2 stroke has reed valves and it makes power every time the piston goes up but a four stroke it makes power every 4 times the piston goes up.
2 stroke engines have a little more power and require a lot less maintenance than a 4 stroke but do not last as long.
4
Two strokes have two cycles the piston go through intake/compression and ignition/exhaust where four strokes have four separate piston cycles intake compression ignition and exhaust.
The bottom of the piston is connected to the crankshaft. This is what is moved by the piston. The top of the piston is a chamber in which gas is ignited to push the piston down. There are 4 cycles in most engines (like car engines.) If you want to know more, including specifics, go to: http://en.wikipedia.org/wiki/Four-stroke_engine
The 1983 Suzuki GS850G is a four stroke, four piston engine. Final drive is a shaft drive.
A four stroke engine produces power every other revolution. The term stroke refers to a directional change of the movement of the piston. Taking this into account, the piston moves twice downward and twice upward every time the engine produces power 2 + 2 = 4
The spark plug will fire once every four strokes, at the end of the compression stroke.
A four stroke engine has four cycles. Intake cycle, compression cycle, power cycle, and exhaust cycle. Each corresponds to one full stroke of the piston; therefore, the complete cycle requires two revolutions of the crankshaft to complete.Here is a brief explanation on how it works.Intake cycleThe intake valve opens, the piston moves downward and fuel and air is sucked into the cylinderCompression cycleThe Intake valve closes and the piston moves upward, compressing the fuel and air mixture.Power cycleA spark plug ignites the fuel/air mixture and the piston is forced downwards.Exhaust cycleThe piston moves upward and the exhaust valve opens, letting the fumes out of the cylinder.
The bore refers to the Inside diameter of the cylinder. The Piston will be nearly the same diameter, with the piston rings making up the difference. Convert the bore to area by multiplying by pi and dividing by four, and multiply by the stroke and the number of cylinders and you have the volume displacement of the engine.