Oil circuit for oil pump and diesel-powered motor vehicle

A diesel engine and oil circuit technology, applied in the direction of machine/engine, mechanical equipment, engine components, etc., can solve the problems of poor low-speed oil supply performance of oil pump oil circuit, difficult processing of zero-fuel throttle valve, complicated oil pump oil circuit, etc. Achieve the effect of improving oil supply performance, reducing use cost, manufacturing and processing difficulty, and improving operating stability

Pending Publication Date: 2017-08-22
LIAOYANG XINFENG TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such a setting method makes the oil circuit of the oil pump relatively complicated after adding a zero oil volume throttle valve
Secondly, due to the small hole diameter of the zero oil throttle valve, t...

Method used

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  • Oil circuit for oil pump and diesel-powered motor vehicle
  • Oil circuit for oil pump and diesel-powered motor vehicle
  • Oil circuit for oil pump and diesel-powered motor vehicle

Examples

Experimental program
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Embodiment

[0050] Please refer to figure 1 , figure 1 The specific structure of the oil pump oil circuit 200 provided in the embodiment is shown. From figure 1 It can be seen from the figure that the oil pump oil circuit 200 includes an oil tank 210 , an oil delivery pump 220 and a common rail pipeline 230 connected in sequence. And the flow direction of the fuel in the oil pump oil passage 200 is shown by the arrow in the figure.

[0051] It should be noted that the oil pump oil circuit 200 is used for a light diesel engine to ensure the oil supply stability and accuracy of the oil delivery pump 220 . Secondly, the load of the oil delivery pump 220 is reduced, and the oil supply capacity and reliability of the oil delivery pump 220 at low speeds are improved.

[0052] Specifically, please refer to figure 2 , the fuel tank 210 , the fuel delivery pump 220 and the common rail pipeline 230 are connected in sequence, and the common rail pipeline 230 is connected with an oil return pip...

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PUM

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Abstract

The invention relates to the field of automobile diesel engine manufacturing, in particular to an oil pump oil circuit and a diesel motor vehicle. The invention discloses an oil pump oil circuit, which is used for light-duty diesel engines, and comprises a fuel tank, an oil delivery pump and a common rail pipeline connected in sequence; the common rail pipeline is connected with an oil return pipe, and the end of the oil return pipe far away from the common rail pipeline is connected with the fuel tank; The oil delivery pump includes a lubricating pipeline and a plunger pump connected to the oil delivery pump. The lubricating pipeline is used to lubricate the plunger pump; the oil delivery pump also includes a pump inner chamber, which is used to collect the leaked oil in the plunger pump and the plunger pump. The lubricating oil of the pump, and the inner cavity of the pump is connected with the oil return pipe. The oil circuit of the oil pump can ensure the stability and accuracy of oil quantity, reduce the load of the oil delivery pump, and improve the oil supply capacity and reliability of the oil delivery pump at low speed.

Description

technical field [0001] The invention relates to the field of automobile diesel engine manufacturing, in particular to an oil pump oil circuit and a diesel motor vehicle. Background technique [0002] In the oil pump oil circuit of the existing diesel engine, the oil inlet metering valve has oil leakage when the valve is closed. In order to discharge the leaked fuel, a zero fuel throttle valve must be added in front of the oil inlet metering valve of the oil pump oil circuit. Such a setting method makes the oil circuit of the oil pump relatively complicated after adding the zero oil volume throttle valve. Secondly, due to the small hole diameter of the zero-oil throttle valve, there is a risk of blocking the oil path of the oil pump, and the zero-oil throttle valve is not easy to process. [0003] In addition, the low-speed oil supply performance of the existing oil pump oil circuit is poor. Contents of the invention [0004] The first object of the present invention is t...

Claims

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Application Information

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IPC IPC(8): F02M37/00F02M37/04
CPCF02M37/00F02M37/0023F02M37/0047F02M37/04
Inventor 李世明康凯臧广辉周峰王雷奚阳解芳
Owner LIAOYANG XINFENG TECH CO LTD
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