When does Cummins the HPI-TP injector mechanical stroke that results in injecting fuel take place?

Name: When does Cummins the HPI-TP injector mechanical stroke that results in injecting fuel take place?
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The mechanical stroke of the Cummins HPI-TP injector that results in fuel injection occurs during the cam ramp-up from IBC (Inner Base Circle) to OBC (Outer Base Circle). This phase of the cam profile increases the pressure in the injector, leading to the injection of fuel into the engine cylinder.

When Does Cummins the HPI-TP Injector Mechanical Stroke That Results