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Variable displacement piston oil delivery pump and variable flow low pressure oil supply device

A technology of piston type and oil delivery pumps, which is applied to components of pumping devices for elastic fluids, components of variable capacity pumps, liquid variable capacity machines, etc., and can solve problems such as difficult manufacturing, complex structure, and increased manufacturing costs , to achieve good orientation, improve uniformity and reduce wear

Active Publication Date: 2017-01-25
ZHENGZHOU UNIVERSITY OF AERONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The structure is complex and difficult to manufacture, which increases the manufacturing cost of the pump

Method used

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  • Variable displacement piston oil delivery pump and variable flow low pressure oil supply device

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Embodiment

[0017] Example: see figure 1 , in the picture, 1-fuel tank, 2-filter, 3-inlet valve, 4-piston oil delivery pump, 5-oil outlet valve, 6-inlet oil pressure sensor, 7-fuel injection pump, 8-controller, 9-oil return pressure sensor, 10-piston, 11-electromagnetic coil, 12-movable iron core, 13-return spring, 14-connecting rod, 15-crankshaft. The arrow in the figure shows the direction of fuel delivery, and the dotted line is the control circuit.

[0018] The variable displacement piston oil delivery pump 4 includes a cylinder body and a piston 10. The cylinder body is provided with an oil inlet and an oil outlet. The piston 10 is composed of an upper cavity and a lower cavity, which are set together and slidably connected. , the lower cavity is provided with an electromagnetic coil 11, the movable iron core 12 in the electromagnetic coil 11 is connected to the inner wall of the upper cavity, and a return spring 13 is arranged between the inner cavity of the upper cavity and the lo...

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Abstract

The invention discloses a variable-displacement piston oil delivery pump and a variable-flow low-pressure oil supplying device. The piston oil delivery pump comprises a cylinder body and a piston, wherein the cylinder body is provided with an oil inlet and an oil outlet, the piston is composed of an upper cavity and a lower cavity, the upper cavity and the lower cavity are arranged together in a sleeving mode and are connected in a sliding mode, an electromagnetic coil is arranged in the lower cavity, a movable iron core in the electromagnetic coil is connected with the inner wall of the upper cavity, and a reset spring is arranged between the upper cavity and the lower cavity. The variable-flow low-pressure oil supplying device comprises an oil tank, an oil filter, an oil inlet valve, the piston oil delivery pump, an oil outlet valve, an oil feeding pressure sensor, a controller, an oil returning pressure sensor, a connecting rod and a crankshaft. According to the variable-displacement piston oil delivery pump and the variable-flow low-pressure oil supplying device, the displacement of the piston oil delivery pump can be adjusted in real time, the structure is simple, adjustment is convenient and reliable, and the oil supplying requirement of an engine fuel injection pump is fully met under various working condition.

Description

technical field [0001] The invention relates to an oil supply device for an engine, in particular to a variable-displacement piston-type oil delivery pump and a variable-flow low-pressure oil supply device. Background technique [0002] The fuel supply system is the heart of the engine, and its performance directly affects fuel injection, atomization, and engine combustion and emissions. With the increasingly serious energy shortage and environmental pollution, the requirements for engine fuel supply technology are also getting higher and higher. The low-pressure fuel supply device of a traditional engine is generally composed of a fuel tank, a fuel filter, and a piston-type fuel delivery pump. The piston-type fuel delivery pump is driven by the camshaft of the fuel injection pump. When the camshaft of the fuel injection pump rotates, the piston of the fuel delivery pump reciprocates in the piston chamber of the fuel delivery pump body. Through the reciprocating movement o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04B53/14F04B49/16F02M37/04
Inventor 侯军兴刘建伟赵东辉文振华魏永强冯宪章蒋志强
Owner ZHENGZHOU UNIVERSITY OF AERONAUTICS
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