Oil outlet valve tight seat on a high pressure oil pump
A technology for high-pressure oil pumps and oil delivery valves, which is applied to components, pump components, fuel injection pumps, etc. of elastic fluid pumping devices, and can solve the problems of tight seat fatigue fracture of oil delivery valves, reduced product service life, and fatigue cracks and other issues to achieve the effect of avoiding waste, convenient disassembly and assembly, and improving service life
Active Publication Date: 2019-03-15
聊城科瑞汽车零部件有限公司
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Problems solved by technology
The tight seat of the oil outlet valve of the diesel engine is frequently fractured during the service process. In view of this phenomenon, it is found that the fracture generally occurs in the middle of the seat body, and the analysis of the tear marks on the fracture shows that the source of the crack generally appears in the installation cavity. At the round port, due to the obvious machining traces here, fatigue cracks are easy to initiate, which will lead to fatigue fracture of the tight seat of the oil outlet valve and reduce the service life of the product
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Embodiment Construction
[0017] In order to make the technical means, creative features, goals and effects of the invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.
[0018] Such as figure 1 and figure 2 The tight seat of the oil outlet valve on a high-pressure oil pump shown has a seat body, and both ends of the seat body are provided with thread pairs, and an oil outlet valve installation cavity is opened in the seat body, and the oil outlet valve installation cavity located in the seat body There is an oil outlet hole 1 at one end, and the installation chamber of the oil outlet valve has a stepped structure. The seat body includes the front end 2 of the seat body, the rear end 3 of the seat body, and the middle variable diameter section 4. The middle variable diameter section 4 is connected to the seat The front end 2 of the body and the rear end 3 of the seat body are respectively connected by screw fit. The middle variab...
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The invention discloses a delivery valve holder of a high-pressure oil pump. A holder body comprises a holder body front end, a holder body rear end and a middle reducer. The middle reducer is in threaded connection with the holder body front end and the holder body rear end correspondingly in a matched mode. The middle reducer comprises an outer barrel and an inner barrel. The inner barrel is provided with a convex contour structure. The inner barrel and the outer barrel are in threaded connection. The inner barrel comprises an inner reserve hole and a top jetting hole. The top jetting hole communicates with an oil outlet hole. The edge of the inner reserve hole is provided with a circular chamfering structure. The parts, making threaded contact, of the inner barrel and the outer barrel are provided with a first sealing washer. A first oil return hole channel penetrating through the outer barrel is formed in one side of the sealing washer. The holder body is reinforced through the form of a threaded connection sleeve for the inner barrel and the outer barrel, the situation that the whole delivery valve holder is broken due to fracture of fatigue cracks is avoided, meanwhile, the delivery valve holder can be maintained and serviced conveniently, and the service life of existing delivery valve holders is greatly prolonged.
Description
technical field [0001] The invention relates to an accessory for a high-pressure oil pump, in particular to a tight seat for an oil outlet valve on the high-pressure oil pump. Background technique [0002] The pressure seat of the oil outlet valve on the high-pressure oil pump of the traditional diesel engine has a seat body, and both ends of the seat body are provided with thread pairs, and an oil outlet valve installation cavity is opened in the seat body, and one end of the oil outlet valve installation cavity located in the seat body is opened. There are oil holes. The tight seat of the oil outlet valve of the diesel engine is frequently fractured during the service process. In view of this phenomenon, it is found that the fracture generally occurs in the middle of the seat body, and the analysis of the tear marks on the fracture shows that the source of the crack generally appears in the installation cavity. At the round port, due to the obvious machining traces here, ...
Claims
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IPC IPC(8): F04B53/10F04B53/22F02M59/46
CPCF02M59/462F04B53/1087F04B53/22
Inventor 徐福印马传胜颜景龙徐广明徐新丽王其祥
Owner 聊城科瑞汽车零部件有限公司