pump gear 612600080872 for Weichai WD615 engine Fuel injection pump parts

Introduction to pump gear 612600080872

Working principle

1. Suction stage: The driving gear drives the driven gear to rotate, and the gear teeth on one side of the suction chamber gradually disengage, the volume of the sealed chamber increases, and a local vacuum is formed. Under the action of atmospheric pressure or system pressure, the liquid is sucked into the inter-tooth groove.

2. Delivery stage: The gear rotates, and the liquid in the inter-tooth groove is carried from the suction chamber to the discharge chamber. The liquid is enclosed in the space formed by the teeth and the pump housing, and is forcibly transported as the gear rotates.

3. Discharge stage: The gear rotates to the side of the discharge chamber, the gear teeth enter meshing, the volume of the sealed chamber of the discharge chamber decreases, the liquid in the inter-tooth groove is squeezed, the pressure increases, and it is discharged from the discharge port.