A fuel injection system which is generally used in diesel engines and forces fuel directly into the combustion chamber. It requires very high injection system pressure to overcome the pressure within the combustion chamber

Fuel-injection system employing a fuel delivery nozzle inside each combustion chamber.

where fuel is injected directly into the (main) cylinders of an engine, esp' in diesels or very rarely in petrol engines; more efficient than indirect injection where diesel is injected into a small chamber off the main cylinder.

The process of connecting an instrument or other sound source to a mixer without using a microphone.

System by which the sound produced by electronic instruments can bypass microphones and go direct to a mixing desk thus eliminating the risk of leakage.

see direct box