if your engine is struggling for fuel over, say, 7000rpm and the injectors needed to cope are too large to run properly below 2000rpm then you could pick injectors suitable for the engine up to the 7000rpm point and switch a second set on at around 6000rpm with a fixed pulse width and sized suitable to deliver the extra fuel needed to keep the smaller primary injectors below 90% duty cycle all the way up to your redline of say, 10000rpm.
You may not need the second injector to have a variable pulse width, it you add a second injector and set it to a fix pulse width per rotation you can then carry on adjusting the fueling with the primary injector.Īs RPM of the engine increases and airflows in the ports pick up velocity the need to time the fueling to the valve open period is reduced, this means that a second set of injector with a fixed injection timing for all cylinders and a small fixed pulse width turned on above a set RPM can suffice to provide the extra fuel that would put the primary injectors outside of their duty cycle limits.
0 kommentar(er)
