2007-07-01 05:28:51 · 6 answers · asked by DX8 1 in Cars & Transportation ➔ Maintenance & Repairs
In a four-stroke engine, the kind used in cars, trucks, etc., the strokes are intake (piston moves down), compression (up), combustion (down), and exhaust (up). As you can see, this would cause the crankshaft to go around only twice - each down-up pair accounts for one revolution. There is only one spark in the four strokes, at the beginning of the combustion stroke. That means one spark per two revolutions, so at 2000 rpm, there are 1000 sparks per minute in that particular cylinder and that particular sparkplug. Divide by 60, and that's 16.67 sparks per second.
If you have a four-cylinder engine, you will have four times as many sparks per revolution (counting all four plugs), or two times the rpm. At 2000 rpm, that would be 4000 sparks per minute, or 66.67 sparks per second. It is a bit amazing, all right.
2007-07-01 05:44:29 · answer #1 · answered by TitoBob 7 · 2⤊ 0⤋
The engine, assuming that it is a 4 cycle motor, will spark once for every 2 revolutions.
2000 / 2 = 1000 Sparks per min.
1000 / 60 = 16.667 Sparks per second.
2007-07-01 05:35:02 · answer #2 · answered by Fordman 7 · 1⤊ 0⤋
There is a spark for every half turn of the crankshaft. So there are two sparks for every revolution. So there are 4000 sparks for 2000 revolutions per minute. So there are 4000 sparks per minute. So there are 4000 sparks per 60 seconds. So there are 66,66 sparks per second. For four cylinder engine this is 16,66 sparks per second per cylinder.
The currently marked "Best answer" is wrong.
2014-12-20 00:29:40 · answer #3 · answered by Sasho 1 · 0⤊ 2⤋
4 cycle engine, intake, compression, power, exhaust. So the spark plug fires once in 4 cycles. 2000 divided by 4 is 500, it fires 500 hundred times every 60 seconds. More like 8 times a second then, not 33. Yes, since it runs, obviously it's possible.
2007-07-01 05:37:13 · answer #4 · answered by oklatom 7 · 0⤊ 2⤋
2000 rpm each plug fires1000 times per minute or 16.6 times per sec. times the number ofcylinders in the moter .
16.6x8 =133.3 per sec. so you got the v8,
2007-07-01 05:37:48 · answer #5 · answered by tott1 5 · 0⤊ 1⤋
It sparks every other revolution. (TDC compression) not TDC exhaust.
So it would be 15 times per second.
And , yes it can.
2007-07-01 05:34:30 · answer #6 · answered by Mr. KnowItAll 7 · 1⤊ 1⤋