Пружина впрыска топлива, внутренний диаметр 33,52 мм Caterpillar 4P3487

The Fuel Injection Spring regulates the opening pressure of the injector nozzle. It maintains a specified preload force against the injector needle, resisting fuel pressure until the correct pressure threshold is reached. Once exceeded the spring compresses are exceeded, allowing the needle to lift and fuel to spray into the combustion chamber. This controlled response ensures accurate timing and quantity of fuel injection, which is necessary for efficient combustion, power output, and emissions control.Attributes:• Ensures consistent combustion and engine efficiency.• Provided with total coils 8.7 and active coils 6.0• Provided with the right-hand direction coil.Applications: The Fuel Injection Spring is used inside fuel injector assemblies of diesel engines, helping regulate nozzle opening based on fuel pressure for controlled injection timing and fuel atomization.