Втулка золотника Caterpillar 4P3500

The Spool Sleeve with bearing functions as a sliding sleeve that moves back and forth along the pump's shaft, controlling the timing of fuel injection into the engine cylinders. The position of the spool sleeve determines the injection timing, which helps optimize engine performance, fuel efficiency, and emissions. The sleeve's movement controls the fuel flow to the engine, adjusting the engine's RPM to maintain a constant speed or accommodate changes in the load.Attributes:• Ensure smooth and precise movement• Provide precise adjustments and stability during engine operation• Allow the spool sleeve to slide along the pump's shaft or governor mechanismApplications:The Spool Sleeve with bearing is used in the Fuel Pump and Governor Drive contributing to precise fuel injection timing and engine speed regulation.