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Timing calculation

Diesel Tuning Fundamentals

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Discussion and questions related to the course Diesel Tuning Fundamentals

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Hi Ben,

I would like to know more about the 120 factor than we use to calculate the inj time related to rpm.

Thanks in advance.

Antonio Romanelli

Hi Antonio, the 120 just comes from the calculations we make to turn revolutions per minute into revolutions per second, then converting this into a cycle time. Rather than doing this in a couple of steps we can just divide 120 by the engine rpm and this will directly provide the cycle time at that rpm.

Good afternoon. Is the 120 applicable to any engine with any number of cylinders? Thank you! .

Hi Andre,

Thanks a lot for the clear explanation.

All the Best.

Antonio Romanelli

We usually reply within 12hrs (often sooner)

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