What is the function of the Audi 80's EDU unit?

I am looking to understand the purpose of the EDU (Electronic Diesel Control) unit in an Audi 80, and how it differs from similar units in other vehicles.

The EDU unit in an Audi 80 is responsible for regulating the fuel delivery and injection timing in the engine.

Compared to other similar units, the EDU in an Audi 80 utilizes load sensing and engine speed signals to precisely control the fuel injection timing, resulting in better fuel efficiency and performance.