remyar wrote: ↑Wed Oct 26, 2022 7:27 amin my case , i'm in grouped silmutaneous , if my theori is good, one cycle is 720° and my setting should be on 4 Squirts per cycle no ?
All 4 of your injectors are on one channel? Yes, for best fuel distribution your setting should be 4-squirts, simultaneous. If your injectors were paired, then 4-squirts, alternating. Each case allows the same amount of fuel, with the same timing, to each cylinder.
However, more squirts in each engine cycle adds the latency (dead-time) to every injection. Example - an engine at 6000 rpm takes about 20ms to complete one engine cycle (4-strokes, 720°). That means the injector has 20 ms to inject the required fuel. If your injector latency (dead-time) is 1ms, the injector has 20 – 1 = 19ms to inject fuel. If every injector has to squirt 4-times per-cycle, that means each injector has 20 – 4 = 16ms to inject the fuel.
If you find that limits your power or rpm, you may have to:
- run injectors paired (half dead-times) or sequential (1 dead-time), or
- increase injector flow (bigger injectors or higher pressure, etc), or
- add more injectors as "staged", or
- use quicker injectors, or
- reduce your squirts, etc.