The crankshaft makes two complete revolutions to complete one thermodynamic cycle. The crankshaft rotates 180 degrees during each stroke of the engine. Hence a total of two revolutions occur after completion of the four strokes. Chechout "www.howstuffworks.com " to see how crankshaft works.
The 1.9 Liter describes the area displaced by the pistons as the crankshaft makes a complete revolution.
Two stroke engines do not have valves, which makes their work simpler. They also have more power than a four stroke engine, because they fire every revolution rather than every other revolution. The fuel is taken in, revolved through a compressor and pushed out the exhaust.
Technician A is correct. The crankshaft must revolve two times to complete one cycle, which as 4 strokes. One half revolution for each stroke. Intake, compression, combustion, exhaust = four strokes to complete a cycle. One half revolution for each stroke of the piston going up or down. Look at a diagram and you'll see this is pretty simple.
WHO MAKES THE ENGINE???
In a dual overhead cam type of engine (or any other known today), camshafts will make 2 turns for every 1 turn of crankshaft. (Rotary engines are different)
I dont think their is one (crankshafts usually sit in oil-they are extremely heavy metal and rotate very fast...your rpms measure how many times the crank makes a 360degree rotation in a single minute.....)but Lucky for us.......A crankshaft does not need a sensor....if you have failure, your engine wont start. Oh yeah, the 4-stroke cycle is completed when the crank spins a full 720degrees-180per stroke. I dont think their is one (crankshafts usually sit in oil-they are extremely heavy metal and rotate very fast...your rpms measure how many times the crank makes a 360degree rotation in a single minute.....)but Lucky for us.......A crankshaft does not need a sensor....if you have failure, your engine wont start. Oh yeah, the 4-stroke cycle is completed when the crank spins a full 720degrees-180per stroke.
The angle of the engine makes it easier for the pistons turn the crankshaft.
it's a 2 to 1 ratio For ALL 4 cycle engines, no matter how many cylinders, the crankshaft turns twice for every turn of the camshaft.
Whoever they can get the best price on it from.
A short stroke Nissan engine with a high performance transmission. That makes a car's wheels fast. Or an engine with High torque.
A 2-stroke engine makes power every2 cycles were a 4-stroke makes power every 4.Hence 2x power. This is absolutely INCORRECT! A two stroke engine develops it's PEAK horse power twice as fast as a four stroke for the reason given but that is it. For a given displacement a four stroke engine will ALWAYS make more torque and horsepower than a two stroke engine of equal displacement. This is due to the fact that a four stroke engine cleans the cylinder of contaminated (exhaust) air, compresses the air/fuel to a more efficient level, and draws a cleaner air/fuel mixture into the cylinder as there is no slow burning, air/fuel mixture contaminating oil mixed in the combustion charge. I have over forty years experience working on engines, and can tell you, the ONLY reason two stroke engines have lasted this long, is due to the fact that they weigh less than an equivalent horsepower four stroke engine. If they DID develop more horsepower, the four stroke would not have become the standard internal combustion engine used in transportation, generators, air compressors and the like.