Control structure for electronic unit pump
A technology of control structure and single pump, which is applied in the direction of engine control, fuel injection control, fuel injection pump, etc., to achieve the effect of solving installation interference and ensuring performance requirements
Pending Publication Date: 2020-05-05
NANYUE FUEL INJECTION SYST CO LTD
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Problems solved by technology
[0003] The purpose of the present invention is to solve the problem that the traditional electric control valve control structure of the existing unit fuel injection pump interferes with the installation of the engine, and provide an electronically controlled unit pump control structure, which can ensure the performance requirements of the unit pump at the same time
Method used
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Embodiment Construction
[0011] The present invention will be further described below in conjunction with the accompanying drawings and embodiments, but the present invention is not limited to the scope of the described embodiments.
[0012] see figure 1 and figure 2 , the electronically controlled unit pump control structure shown in the figure includes unit pump body 1 and plunger valve parts, fuel injection valve parts 17, pressure stabilizing valve parts 18 and solenoid valve parts.
[0013] The plunger valve components include a plunger 16, a plunger spring 13 and a plunger spring seat 14, the plunger spring seat 14 is fixed on the bottom of the plunger 16, the plunger spring 13 is put on the plunger 16, and the upper end of the plunger spring 13 It acts on the pump body 1, and the lower end acts on the plunger spring seat 14.
[0014] A plunger cavity 19, an oil inlet and return hole 20, an oil injection hole 21, a pressure stabilizing oil hole 22, a plunger oil hole 23, a fuel injection valv...
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The invention discloses a control structure for an electronic unit pump. The control structure comprises an unit pump body, a plunger valve part, an oil injection valve part, a pressure stabilizing valve part and a solenoid valve part, a plunger cavity, an oil inlet and return hole, an oil injection hole, a pressure stabilizing oil hole, a plunger oil hole, an oil injection valve part installationhole, a pressure stabilizing valve part installation hole and a solenoid valve part installation hole are formed in the unit pump body, the same axis where the plunger cavity, the plunger oil hole, the oil injection hole and the oil injection valve part installation hole of the unit pump body are located is perpendicular to the same axis where the pressure stabilizing valve part installation hole, the pressure stabilizing oil hole and the oil inlet and return hole are located, and is parallel to the axis of the solenoid valve part installation hole, and the oil inlet and return hole is perpendicular to and penetrates through the solenoid valve part installation hole. According to the control structure, the solenoid valve part is moved to the position where the pump body does not coincidewith the axis of the plunger valve part, thus the central axis of the solenoid valve part is parallel to the central axis of the plunger valve part, the problem of installation interference between atraditional control structure of an electric control valve and an engine is solved, and meanwhile the performance requirements of the unit pump can also be ensured.
Description
technical field [0001] The invention relates to the technical field of electronically controlled unitary pumps, in particular to a control structure of electronically controlled unitary pumps. Background technique [0002] In order to meet the increasingly stringent emission standards of diesel engines, domestic diesel engine manufacturers have adopted various electronically controlled fuel systems for the research and development of diesel engines. If fuel systems such as common rail and pump nozzles are used for diesel engines, it is necessary to re-evaluate and design the structure, strength, and reliability of most components of existing diesel engines to meet the requirements of fuel system installation and high injection pressure. The explosive pressure and other requirements, and the development cycle is long, and the development cost is expensive. The fuel system using the electronically controlled unit pump can meet the emission standards of the diesel engine by ma...
Claims
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IPC IPC(8): F02M59/10F02M59/46F02D1/02
CPCF02D1/02F02M59/10F02M59/466
Inventor 罗山刚欧阳玲湘邓飞龙美彪黄民备李少鹤
Owner NANYUE FUEL INJECTION SYST CO LTD