Direct injection may refer to:
*A music recording technique more commonly referred to as
direct input
A DI unit (direct input or direct inject) is an electronic device typically used in recording studios and in sound reinforcement systems to connect a high-output impedance, line level, unbalanced output signal to a low-impedance, microphone lev ...
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Direct fuel injection
Fuel injection is the introduction of fuel in an internal combustion engine, most commonly automotive engines, by the means of an injector. This article focuses on fuel injection in reciprocating piston and Wankel rotary engines.
All compr ...
, a method of fuel injection for an internal combustion engine
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Direct injection diesel
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Gasoline direct injection
Gasoline direct injection (GDI), also known as petrol direct injection (PDI), is a mixture formation system for internal combustion engines that run on gasoline (petrol), where fuel is injected into the combustion chamber. This is distinct fro ...
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Direct injection launch, a method of launching a spacecraft toward the moon or interplanetary space without the use of a temporary parking orbit
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