The difference between an ejector and an injector lies primarily in their respective applications and working principles.
An ejector, also known as a jet pump, is a mechanical device that utilizes the mixing action of precision nozzles and compressed air to spray liquid at a high velocity onto a target surface. It achieves various objectives such as cleaning, disinfection, coating, and more. Its internal structure, though complex, typically consists of three main parts: a compressed air source, a liquid container, and a spraying head. High-pressure ejectors operate by increasing the pressure of the liquid for spraying. These ejectors are widely used in areas like cleaning, disinfection, coating, and irrigation due to their efficiency, convenience, and cost-saving benefits.
On the other hand, an injector, particularly in the context of engine technology, is primarily responsible for spraying fuel into the intake manifold or cylinder of an engine. It works based on signals from the engine’s ECU, which calculates the appropriate injection timing and pulse width. The injector uses high-pressure fuel supplied through its inlet and, when the pressure exceeds a certain threshold, the injector’s valve opens, allowing the high-pressure fuel to spray out in a misty form into the engine cylinder for combustion. Injectors are classified into various types, such as pin-type electromagnetic injectors and ball-type electromagnetic injectors, and are widely used in automobiles, small boats, and engineering machinery.
In summary, the ejector is primarily used for spraying liquids for various applications, while the injector is specifically designed for spraying fuel into an engine for combustion. Both devices have their unique functions and applications within their respective fields.
