Oil Research YUKEN Oil Pump Features and Functions

NegotiableUpdate on 05/25

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Overview

The key component of a fuel injection pump is the plunger. If we compare it to a commonly used syringe in hospitals, the movable plunger is called the plunger, and the syringe is called the plunger sleeve. Assuming a spring is installed inside the syringe to support one end of the plunger, and the other end of the plunger contacts the camshaft, when the camshaft rotates once, the plunger will move up and down inside the plunger sleeve. This is the basic movement mode of the fuel injection pump plunger.

Product Details

Oil Research YUKEN Oil Pump Features and Functions

When the plunger rises to the "upper point" and moves downwards, the inclined groove of the plunger will meet the suction port again, and diesel will be sucked into the plunger sleeve again, repeating the above action. Each plunger system of the inline fuel injection pump corresponds to one cylinder, and there are four plunger systems for every four cylinders. Therefore, it has a relatively large volume and is mostly used in medium-sized and above vehicles. For example, diesel engines on buses and large trucks generally use inline fuel injection pumps.

A new pump series suitable for industrial and mobile markets. Equipped with load sensing compensator, rated pressure of 4000 PSI, and higher shaft speed.

Variable displacement piston pump has a simple and compact structure, providing high pressure and high performance.

High pressure: 35 MPa (5080 PSI)

Even at a pressure of 35 MPa (5080 PSI), these pumps can still maintain high volumetric efficiency.

There are seven models to choose from, with displacement ranging from 16.3 to 180.7 cm3/rev (0.995 to 11.03 cubic inches/rev).

We offer 6 models with a geometric displacement range of 18.6 to 100.7 cubic centimeters per revolution, which can meet various application needs.

The standard model adopts a through drive structure, which can connect the driven side pump with the same displacement as the driving pump, and has a wide flow range.

The A3HG series pumps inherit the high performance of the A3H series while adopting a higher rated pressure design (31.5 megapascals).

This type of control has pressure sensors and tilt angle sensors inside the pump. This pump is used together with an external amplifier (if it is "04EH", the amplifier is integrated into the pump). Only one control valve is needed to control the flow and pressure in proportion to the input voltage. By providing electrical feedback on the tilt angle of the inclined plate corresponding to the flow rate and load pressure to the control valve, performance has been greatly improved

The plunger and plunger sleeve are precision machined matching parts. There is an inclined groove on the plunger body, and a small hole on the plunger sleeve called the suction port. This suction port is filled with diesel. When the inclined groove of the plunger faces the suction port, diesel enters the plunger sleeve. When the plunger is pushed to a certain height by the camshaft, the inclined groove of the plunger is offset from the suction port, and the suction port is closed, so that diesel cannot be sucked in or pushed out. When the plunger continues to rise, it compresses the diesel. When the diesel pressure reaches a certain level, it will open the one-way valve and rush out into the fuel injector, and then enter the cylinder combustion chamber from the fuel injector. The plunger discharges a certain amount of diesel each time, only a part of which is injected into the cylinder, while the rest is discharged through the return oil hole, and the injection amount is adjusted by increasing or decreasing the amount of returned oil discharged.

Oil Research YUKEN Oil Pump Features and Functions