Front sealing assembly of oil sprayer of high-pressure oil pump

Abstract

The utility model relates to the technical field of oil sprayer sealing, in particular to a high-pressure oil pump oil sprayer front sealing assembly which comprises a second sealing groove, a sealing ring and a protruding rib. The second sealing groove structure is arranged on the oil sprayer; the sealing ring is mounted on the first sealing groove and the second sealing groove; the protruding rib structures are arranged in the first sealing groove and the second sealing groove. Multiple layers of sealing grooves are formed in the front end of the oil sprayer, the protruding ribs are arranged in the oil sprayer, and the sealing ring without a groove is matched, so that the purpose of improving the sealing performance is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of fuel injector seals, in particular to a pre-seal assembly for a high-pressure fuel pump fuel injector. Background Art

[0002] When a car is driving, the engine needs to suck oil to send the oil in the fuel tank into the combustion chamber through the fuel injector. In order to ensure that the oil in the combustion chamber cannot flow back into the fuel tank and cause danger, the contact position between the fuel injector and the combustion chamber usually needs to be sealed very tightly, and multiple layers of sealing rings are set on the fuel injector. A high-pressure fuel pump injector front sealing component is provided to improve the sealing performance of the fuel injector. Summary of the invention

[0003] The utility model achieves the purpose of improving the sealing performance by arranging multi-layer sealing grooves at the front end of the fuel injector and arranging raised ribs inside the fuel injector in combination with a sealing ring without a groove.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A high-pressure oil pump injector pre-seal assembly comprises a second sealing groove, a sealing ring and a raised rib; the second sealing groove structure is arranged on the injector; the sealing ring is installed on the first sealing groove and the second sealing groove; the raised rib structure is arranged inside the first sealing groove and the second sealing groove.

[0006] Preferably, no groove for cooperating with the raised rib is provided inside the sealing ring.

[0007] Preferably, the two sealing rings are arranged on the injector, and the second sealing groove is located behind the first sealing groove.

[0008] Compared with the prior art, the gain effect of the utility model is:

[0009] The sealing effect is better, and the raised ribs are set to squeeze the sealing ring upward at all times to fill the gap with the combustion chamber;

[0010] The design of multiple sealing grooves also provides a sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a stereogram of an embodiment of the utility model;

[0012] Figure 2 It is an exploded view of an embodiment of the utility model.

[0013] In the figure: first sealing groove 1; second sealing groove 2; sealing ring 3; raised rib 4; injector 5; injection hole 6; DETAILED DESCRIPTION

[0014] The technical solution of the utility model is further described below in conjunction with the accompanying drawings and specific embodiments.

[0015] Example

[0016] See also Figure 1-2 A high-pressure oil pump injector pre-sealing assembly includes a second sealing groove 2, a sealing ring 3 and a raised rib 4; the second sealing groove 2 is structurally arranged on the injector 5; the sealing ring 3 is installed on the first sealing groove 1 and the second sealing groove 2; the raised rib 4 is structurally arranged inside the first sealing groove 1 and the second sealing groove 2.

[0017] The inside of the sealing ring 3 is not provided with a groove for cooperating with the raised rib 4; the material of the sealing ring 3 is a thermosetting material.

[0018] Two sealing rings are arranged on the fuel injector 5 , and the second sealing groove 2 is located behind the first sealing groove 1 .

[0019] Working principle: The fuel injector 5 with two sealing rings has a better sealing effect. With the raised ribs 4 arranged inside the first sealing groove 1 and the second sealing groove 2 on the fuel injector 5, the sealing ring 3 is subjected to an upward force and is pushed upward, ensuring that the fuel injector 5 fits tightly with the combustion chamber, and the oil droplets in high-pressure combustion will not flow back to the fuel tank from here, thereby improving the safety of the entire vehicle during driving.

Claims

1. A high-pressure fuel pump injector front seal assembly, characterized in that: It comprises a second sealing groove, a sealing ring and a raised rib; the second sealing groove structure is arranged on the injector; the sealing ring is installed on the first sealing groove and the second sealing groove; the raised rib structure is arranged inside the first sealing groove and the second sealing groove.

2. A high-pressure fuel pump injector front seal assembly according to claim 1, characterized in that: The interior of the sealing ring is not provided with a groove for cooperating with the raised rib.

3. A high-pressure fuel pump injector front seal assembly according to claim 1, characterized in that: The two sealing rings are arranged on the injector, and the second sealing groove is located behind the first sealing groove.

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