Oil pump with variable displacement

A displacement machine, oil pump technology, applied in the direction of lubrication pump, mechanical equipment, engine components, etc., can solve the problems of limited variation range of oil pump displacement, failure to achieve precise control, limited energy consumption, etc., to avoid the engine The effect of power

Inactive Publication Date: 2014-05-07
北京汽车动力总成有限公司
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  • Summary
  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In terms of variable displacement oil pumps, patents 201020140940.8 and 201110326276.5 also declare two variable displacement technologies, but the disadvantage is that the rang

Method used

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Embodiment Construction

[0021] The invention discloses an electronically controlled two-stage variable-displacement engine oil pump integrated in the engine front cover. The invention not only realizes compact overall structure, miniaturization and light weight of the oil pump body, but also fully meets the different requirements of the engine oil flow under different speeds and loads by applying the electronically controlled two-stage variable displacement technology. Realize the adjustment of the displacement of the oil pump, avoid the useless work done by the oil pump, thereby reducing the power consumption of the whole machine by the oil pump, and achieve the effects of energy saving and emission reduction. The invention can accurately control the flow rate of the oil pump according to the working conditions of the engine, thereby effectively reducing the driving work of the oil pump, finally reducing the oil consumption rate of the engine, and achieving the purpose of energy saving and emission r...

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Abstract

The invention discloses an oil pump with variable displacement. The oil pump with variable displacement comprises an inner cavity, wherein a stator, a rotor and an elastic element are arranged in the inner cavity, the stator and the rotor are eccentrically arranged, multiple blades are fixed to the rotor, a first control chamber is arranged between the stator and the inner cavity, a first oil line is communicated with a feedback oil line of a main oil gallery of an engine, a first protruding block is arranged on the stator, a second control chamber is arranged between the stator and the inner cavity, a second protruding block which extends into the second control chamber is arranged on the stator, the second control chamber is communicated with a second oil line, the first oil line is connected with the second oil line through a reversing valve, and the reversing valve is used for controlling the second control chamber to be communicated with the first control chamber or an oil pan. According to the oil pump with variable displacement, since the electrically-controlled two-stage variable displacement technology is adopted, the displacement of the oil pump can be adjusted according to different demands of the engine for engine oil flow under different working conditions, the situation that the oil pump consumes excessive engine power is avoided, and the effects of energy conservation and emission reduction of the whole oil pump are achieved.

Description

technical field [0001] The invention relates to a rotary pump, in particular to a variable displacement oil pump. Background technique [0002] The engine oil pumps currently on the market can be divided into two categories according to their layout: independent type and integrated engine front cover type. The pump body of the independent oil pump is generally arranged under the crankshaft, and is driven by the crankshaft by means of gears or sprockets. The pump body of the integrated front cover type oil pump is integrated in the front cover of the engine, and is generally directly driven by the crankshaft. [0003] The independent oil pump is generally arranged under the crankshaft, driven by a separate drive system (gear or sprocket plus chain), the drive structure is not compact enough, it takes up a lot of space, and requires many parts. Under the trend of lightweight, this design has certain shortcomings, which is not conducive to controlling the overall size of the ...

Claims

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Application Information

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IPC IPC(8): F16N13/20F16N23/00
Inventor 秦颖张艳青贺燕铭马童立李红强周启顺赵锦伦
Owner 北京汽车动力总成有限公司
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