An ignition delay model for Diesel engines based on fundamental physics.

What is it about?

In Diesel engines, there is always a time-lag between the start of fuel injection and the start of combustion. It is very important to predict this duration accurately for the purpose of engine simulation or for closed-loop combustion control. In this work, a novel ignition delay for modelling the ignition delay period based of first-principles has been proposed and validated on different configurations of modern Diesel engines.

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Photo by Bruno on Unsplash

Photo by Bruno on Unsplash

Why is it important?

Though many ignition delay models are available in the open literature, majority of them are focused on single injections while modern engines work on multiple-injections which is difficult to be modeled. This work addresses this issue. Since this is a physics-based model, the developed equation can be used on multiple engine platforms with minimal tuning.