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An injection device with controllable speed of electric cylinder needle valve

A technology of injection device and control device, which is applied in the directions of fuel injection device, electrical control, fuel injection control, etc., can solve the problems of difficult PLC control system and low precision, and achieve the effect of precise speed control and effective control of spray flow.

Active Publication Date: 2020-07-24
SHANGHAI MARITIME UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing needle valve control devices are all driven by air cylinders or hydraulic cylinders to realize lifting movement, but the movement controlled by air cylinders or hydraulic cylinders has low precision and is not easy to connect with the PLC control system

Method used

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  • An injection device with controllable speed of electric cylinder needle valve

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Embodiment Construction

[0028] The present invention provides an injection device with controllable speed of the electric cylinder needle valve. In order to make the purpose, technical solution and effect of the present invention clearer and clearer, the present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0029] It should be noted that the terms "first" and "second" in the description and claims of the present invention and the above drawings are used to distinguish similar objects, but not necessarily to describe a specific order or sequence. It should be understood that the data so used are interchangeable under appropriate circumstances. Furthermore, the terms "comprising" and "having", as well as any variations thereof, are intended to cover non-exclusive inclusion, for example, ...

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Abstract

The invention provides a spraying device having an electric cylinder needle valve with controllable speed. The spraying device includes a servo electric cylinder, a grating scale displacement sensor,a frame assembly, a needle valve control device and a PLC control system. The frame assembly is provided with an oil inlet. The needle valve control device is arranged in the frame assembly. The needle valve control device includes a needle valve, a push-pull arm and a ball valve. The PLC control system is electrically connected to the servo electric cylinder and the grating scale displacement sensor. According to the technical scheme of the invention, the servo electric cylinder converts rotary motion into precise linear motion to realize high-precision linear motion of the needle valve control device. A displacement state measured by the grating scale displacement sensor is transmitted to the PLC control system for precise control, which ensures good fuel oil spray quality. Meanwhile, anelectric cylinder is used to replace a hydraulic cylinder and a gas cylinder in the prior art, which is more environmentally friendly and energy-saving.

Description

technical field [0001] The invention relates to the field of high-pressure spraying devices, in particular to a spraying device with controllable speed of an electric cylinder needle valve. Background technique [0002] In the fuel supply system, in order to optimize the combustion process of the fuel engine, control emissions and maintain good fuel economy, good atomization performance is required. For a long time, the exploration of fuel spray mechanism has been paid attention to by researchers at home and abroad, and a lot of research has been done on this topic. In the process of fuel spraying, the lift of the needle valve plays an important role in the quality of the atomization. The existing needle valve control devices are all driven by air cylinders or hydraulic cylinders to realize lifting movement, but the movement controlled by air cylinders or hydraulic cylinders has low precision and is not easy to be connected with the PLC control system. Contents of the inv...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02M51/06F02M61/10F02D41/30
CPCF02D41/30F02M51/06F02M61/10
Inventor 姜正威张旭升马奇浩
Owner SHANGHAI MARITIME UNIVERSITY
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