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Engine air inlet freezing detection system and de-icing system

A technology of engine air intake and detection system, which is applied in the direction of engine testing, engine components, machines/engines, etc., to avoid complete or partial damage

Inactive Publication Date: 2018-10-23
TSINGHUA UNIV
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0003] Based on this, it is necessary to provide an engine air inlet icing detection system, an icing system, an internal combustion engine and an aircraft

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  • Engine air inlet freezing detection system and de-icing system
  • Engine air inlet freezing detection system and de-icing system
  • Engine air inlet freezing detection system and de-icing system

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Embodiment Construction

[0033] In order to make the object, technical solution and advantages of the present invention clearer, an engine air inlet icing detection system and a deicing system of the present invention will be described through the following embodiments in conjunction with the accompanying drawings. For further details. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0034] see Figure 1 to Figure 3 As shown, the engine intake port icing detection system according to an embodiment of the present invention is provided with a filter cover 200, an elastic connector 400, a detection device 500 and a control device (not shown in the figure).

[0035] As an optional implementation, the filter cover 200 is set on the engine air inlet 100, and the natural frequency of the filter cover 200 is greater than or equal to the vibration frequency of the engine when the engine is idling and less...

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Abstract

The invention provides an engine air inlet freezing detection system. An air inlet of an engine is covered with a filter cover, and the inherent frequency of the filter cover is larger than or equal to the vibration frequency of the engine when the engine is at idle but smaller than or equal to 150% of the vibration frequency of the engine when the engine is at 100% rotating speed. A detection device is used for detecting the vibration state of the filter cover; a control device is in signal connection with the detection device and obtains state information of the filter cover according to vibration state signals detected by the detection device. According to the engine air inlet freezing detection system, when the filter cover is frozen, due to the weight change, the vibration frequency is reduced to be equal to the vibration frequency of the engine, resonance is generated, the detection device can detect the vibration state and change of the filter cover, the control device can obtain the state information of the filter cover according to the detected vibration state change, and the freezing phenomenon of the filter cover is found in time.

Description

technical field [0001] The invention relates to the field of internal combustion engines, in particular to an engine air inlet icing detection system and a deicing system. Background technique [0002] For helicopters, operating in cold and humid environments such as on mountains or near bodies of water, ice can form on the protective grille of the engine air intake, and the amount of ice that can accumulate can overwhelm the gas turbine intake. Partial blockage of the port may result in complete or partial damage to the gas turbine. How to detect the icing phenomenon in time is a problem that needs to be solved. Contents of the invention [0003] Based on this, it is necessary to provide an engine air inlet icing detection system, an icing system, an internal combustion engine and an aircraft aiming at how to detect icing phenomena in time. [0004] The present invention provides a system for detecting icing at an engine air inlet, which includes a filter cover, a detec...

Claims

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Application Information

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IPC IPC(8): F02M35/104G01M15/02
Inventor 袁荒杨俊杰孙经雨庞科技李笑曾武黄凯
Owner TSINGHUA UNIV
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