一种柴油机气缸盖喷油器衬套用密封结构
By employing a stepped sealing ring and a multi-layer sealing design on the diesel engine cylinder head injector bushing to achieve a tight fit between the bushing body and the bushing, the leakage problem caused by the single sealing structure is solved, and stable operation of the diesel engine is achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XINCHANG QIHONG MASCH CO LTD
- Filing Date
- 2025-07-29
- Publication Date
- 2026-07-17
AI Technical Summary
The existing diesel engine cylinder head injector bushing has a simple sealing structure, which is prone to water leakage and affects the normal operation of the diesel engine.
The stepped sealing ring and the stepped groove on the surface of the bushing body are closely fitted together. Combined with the design of the ring, sealing gasket, fixing bracket, limit rod, pressure ring and spring, a multi-layer sealing system is formed to enhance the sealing performance between the bushing body and the cylinder head.
This significantly improves the sealing effect of the injector bushing, reduces the risk of water leakage, and ensures the stable operation of the diesel engine.
Smart Images
Figure CN224515277U_ABST
Abstract
Claims
1. A sealing structure for a diesel engine cylinder head injector bushing, comprising a cylinder head (1), characterized in that: The cylinder head (1) is provided with a bushing body (2) inside, and an injector body (3) is fixedly connected inside the bushing body (2). A stepped sealing ring (4) is fixedly connected inside the cylinder head (1). A stepped groove is provided on the surface of the bushing body (2). The stepped sealing ring (4) is in contact with the stepped groove and the injector body (3) respectively. A ring (5) is threadedly connected to the surface of the bushing body (2). A sealing gasket (6) is fixedly connected to the surface of the ring (5). The sealing gasket (6) is in contact with the cylinder head (1) and the bushing body (2) respectively.
2. A sealing structure for a diesel engine cylinder head injector liner according to claim 1, characterized in that: The top of the bushing body (2) is fixedly connected to a fixing frame (7). The inside of the fixing frame (7) is slidably connected to a limiting rod (8). There are several limiting rods (8). The limiting rods (8) are evenly distributed in a ring on the surface of the fixing frame (7). The bottom of the limiting rod (8) is fixedly connected to a pressure ring (9). The pressure ring (9) fits against the ring (5). The pressure ring (9) fits against the fixing frame (7). The top of the pressure ring (9) is fixedly connected to a spring (10). The end of the spring (10) away from the pressure ring (9) is fixedly connected to the fixing frame (7).
3. A sealing structure for a diesel engine cylinder head injector liner according to claim 2, characterized in that: The top of the fixed frame (7) is fixedly connected to a mounting bracket (11). There are several mounting brackets (11). The mounting brackets (11) are evenly distributed in a ring on the surface of the fixed frame (7). The mounting brackets (11) are fixedly connected to the cylinder head (1) by bolts.
4. The sealing structure for a diesel engine cylinder head injector liner according to claim 1, characterized by: The surface of the bushing body (2) is provided with an annular groove, and a rubber ring (12) is fixedly connected inside the annular groove. The rubber ring (12) is in contact with the cylinder head (1).
5. A sealing structure for a diesel engine cylinder head injector bushing according to claim 3, characterized in that: The surfaces of the spring (10) and the bolt are coated with an anti-rust coating.
6. The seal structure for a diesel engine cylinder head injector liner according to claim 2, characterized by: The top of the ring (5) and the bottom of the pressure ring (9) are both roughened.