 stupid question ... |
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| SirAndy |
  Nov 14 2003, 05:37 PM
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#1
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Resident German  Group: Admin Posts: 41,682 Joined: 21-January 03 From: Oakland, Kalifornia Member No.: 179 Region Association: Northern California  |
for each full revolution of the crank (360 deg), how many power-strokes do you have on a 4-cylinder boxer?
1? or, to be more precise, how many OPEN intake valves do you have per full revolution of the crank? (ignore overlap, only full open valves). Andy |
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| ArtechnikA |
Nov 14 2003, 05:45 PM
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rich herzog Group: Members Posts: 7,390 Joined: 4-April 03 From: Salted Roads, PA Member No.: 513 Region Association: None |
QUOTE(SirAndy @ Nov 14 2003, 03:37 PM) for each full revolution of the crank (360 deg), how many power-strokes do you have on a 4-cylinder boxer? 1? 2 the four strokes are (officially) Suck - Squeeze - Bang - Blow. in that order. each cylinder fires every two revolutions of the crankshaft == 1 revolution of the camshaft. so you get half as many of each stroke in a crankshaft rev as there are cylinders. (4 cyl == 2 intake, 2 compression, 2 power, 2 exhaust). you get you cylinders' complement in a complete revolution of the camshaft ( == 2 crank revs). and since a power stroke 'makes power' over about 120 crankshaft degrees, this is why 6's are so smooth - you have 1 cylinder making power at all times. |
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Posts in this topic
SirAndy stupid question ... Nov 14 2003, 05:37 PM
SirAndy sucksqueezeban... Nov 14 2003, 06:48 PM Jeroen So, Bruce, how many RPM can you type?
:D
cheers,
... Nov 14 2003, 06:57 PM DNHunt More important, how long can it turn before the wh... Nov 14 2003, 07:34 PM
kwales Think I had a girlfriend like that once...
:blin... Nov 14 2003, 07:58 PM |
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