Injector Type: Diesel injectors come in various types, such as pintle nozzles, single-hole nozzles, and multi-hole nozzles.
The specific type may affect the injector's performance characteristics.
Flow Rate: The flow rate, typically measured in cubic millimeters per stroke (mm³/stroke), represents the volume of fuel delivered with each injection cycle. This specification is essential for achieving the desired engine performance.
Operating Pressure: The operating pressure, measured in bar (or psi), indicates the pressure at which the injector delivers fuel. It's a critical factor in determining the injector's atomization and spray pattern.
Opening Pressure: This is the pressure at which the injector's nozzle needle lifts and allows fuel to flow. It is a critical specification that influences the injector's start of injection timing.
Nozzle Size: The size of the injector nozzle orifices can affect the fuel spray pattern and atomization. Different engines may require specific nozzle sizes for optimal combustion.
Spray Pattern: The injector should provide a uniform and well-atomized fuel spray pattern to ensure efficient combustion and reduced emissions.
Injector Material: Injectors are often made from materials like stainless steel, which must withstand high-pressure diesel fuel and temperature fluctuations.
Response Time: This specification indicates how quickly the injector can open and close in response to the engine's needs. Faster response times can improve engine performance and emissions.
Injector Compatibility: It's crucial to ensure that the injector is compatible with the specific make and model of the diesel engine it is intended for.
Maintenance Requirements: Different injectors may have varying maintenance intervals and procedures. Some may require periodic cleaning or replacement of components.
Manufacturer and Part Number: Diesel injectors are often specific to the manufacturer and may have a unique part number, such as the "Delphi Gardner 6702902" you mentioned.
Warranty: Manufacturers often provide warranty information for their injectors, which is important to consider for aftermarket or replacement parts.