Note: Refer HERE for a detailed explanation of Injector Timing settings.

 

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Injector Timing

The Injector Timing function allows the user to control the position in the engine cycle that the fuel is injected at. Typically with port injection the idea is to finish injecting the fuel just before the inlet valve OPENS (approximately 360 degrees before TDC (firing) on a 4 Stroke engine).

 

Setup Notes

 

·On 4 Stroke engines Injection Timing Position can be Start, Center, or End of Injection and Injector Timing can be adjusted from 0 to 720 degrees.

·On 2 Stroke engines Injection Timing Position can be Start, Center, or End of Injection and Injector Timing can be adjusted from 0 to 360 degrees.

·On Rotary engines Injection Timing Position can be adjusted from 0 to 360 degrees.

·On Rotary engines and engines using Staged Injection the Injection Timing Position should be set to Start of Injection to allow Fuel Cuts to work correctly.

·When using group injection modes the injector timing is based on cylinder 1 TDC and if more than 1 injection per engine cycle then the extra injections are spaced evenly. This means a v8 with 8 injections per cycle and evenly separated TDCs will inject at the same angle before each cylinders TDC.

 

The following diagram gives an example of a typical injection timing setup for a 4-Stroke engine.