Wow! Thanks Mark, for even more illumination on how things work in our mechanical beasts! This is all great stuff for those of us that don't know! John On 11/16/2013 4:24 PM, mark drillock wrote: > The injectors do fire in time with the engine position. All 4 injectors > fire once every hall pulse which happens every 180 degrees of crankshaft > rotation, so twice for every engine revolution. The ignition spark is by > definition according to engine position and the fuel injectors fire > based on the same triggering event that the ignition uses. Of course the > ECU adjusts the ignition point to optimize it. The ECU also cuts off the > injection pulses when conditions dictate, such as going down hill with > your foot off the gas, assuming your throttle position switch is working. > > Mark > > Scott Daniel wrote: >> minor correction ...waterboxer injectors don't turn on 'every >> revolution' .. >> They are triggered continously in pulses...or in 'injector on time, in >> milliseconds of duration.' >> >> - as one big 4 part injector too btw. Called batch fire. >> Not sequential, not timed to engine or piston position. >> Somewhat crude. >> >> > . > |
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