2006-12-28 03:22:39 · 6 answers · asked by Red Falcon 1 in Cars & Transportation ➔ Motorcycles
If you are asking about a single cylinder engine, then it is the momentum of the flywheel that keeps the cycle moving between combustion phases. On a multi-cylinder engine, the rod journals on the crankshaft are offset from each other so when one cylinder is on the compression stroke, another cylinder is on combustion stroke and so on, so each cylinder helps the other cylinders keep moving.
I dont know what the other guy is talking about, I've never seen a piston - rod connected to a camshaft??
2006-12-28 03:40:10 · answer #1 · answered by watching_the_sunset 2 · 0⤊ 0⤋
Inertia. Kinetic power is saved interior the the flywheel on the flexibility stroke (or, once you first initiate the engine, from the starter motor or pull-twine) and it truly is not all released in a single go. there continues to be adequate KE saved interior the flywheel to make the exhaust, induction and compression strokes in the past the subsequent power stroke. In a 4-cylinder engine, one cylinder is often on the flexibility stroke and so the flywheel could desire to be smaller -- different than that the seize plate has to press against it. by utilising the way, word what takes place in case you push down the pedal of a BMX motorcycle (devoid of freewheel seize) with the chain related however the lower back wheel off the floor .....
2016-10-28 13:24:25 · answer #2 · answered by ? 4 · 0⤊ 0⤋
Ignition and detonation of the compressed gases causes the piston to move downwards.... Being that the piston is connected to a rod which is connected to a camshaft that all other pistons are also attached to, the detonation of gases in other cylinders causes the cam to revolve which forces the piston back up, compressing the gases once again...
EDIT: Now that Ive reread your question, I see youre asking about the downstroke PRIOR to ignition and compression.... That is achieved in the same fashion as the compression stroke - revolution off the cam caused by other cylinders detonating...
Yes, George - in a one cylinder engine, the flywheel inertia causes those forces...
2006-12-28 03:28:22 · answer #3 · answered by YDoncha_Blowme 6 · 0⤊ 2⤋
Would someone plz wake up ol` watchin out there! Everyone knows the piston-rod is connected to the camshaft with the kanibblin pin. Also a little known tech tip is the kanibblin pin can be used to replace a worn out muffler bearing in an emergency.
2006-12-30 06:56:31 · answer #4 · answered by Anonymous · 0⤊ 0⤋
I don't know what YDoncha has been smoking. In a one cylinder engine flywheel and crankshaft inertia move the piston down on the intake stroke, and back UP again for the compression stroke
2006-12-28 03:35:16 · answer #5 · answered by Anonymous · 2⤊ 0⤋
it is inertia force of the crank shaft assembly. The crank shaft has counter weights to help balance while turning. The crank shaft has the counter weights on half the rotation, and the piston and connecting rod has the weight for the other side of the crank shaft. The crank shaft has a fly wheel which also helps balance and has weight to help the crank shaft spin
2006-12-28 12:54:25 · answer #6 · answered by wallisstgeorge 1 · 0⤊ 0⤋