Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Engine oil pressure-sensitive switch

A switch and engine oil technology, applied in the direction of pressure lubricated safety devices, etc., can solve problems such as false alarms, failures, power failures, etc., and achieve the effect of solving component corrosion

Inactive Publication Date: 2017-07-21
CHERY AUTOMOBILE CO LTD
View PDF4 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Since the breathing channel of the current oil pressure sensitive switch is exposed, it is very easy to cause failure due to water ingress
For example, when the engine encounters a large area of ​​cold water splashing, the temperature drops, and the pressure in the inner cavity is lower than the atmospheric pressure. At this time, the inner cavity needs to compensate for air to achieve balance. It will enter the inner cavity along the breathing channel, and then the muddy water will adhere to the position of the dynamic and static contacts. Although the dynamic and static contacts are separated under the action of oil pressure, due to the conduction effect of water droplets between the dynamic and static contacts, The switch behaves as normally on, false alarm
When the liquid enters for a period of time, there is a certain amount of corrosion between the contact surfaces of springs, contacts and other parts, and the rust layer blocks the conduction of the circuit, and the switch will fail at this time

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Engine oil pressure-sensitive switch
  • Engine oil pressure-sensitive switch
  • Engine oil pressure-sensitive switch

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0033] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0034] see figure 2 , the embodiment of the present invention provides an engine oil pressure sensitive switch, the switch includes: an oil flow passage 1 communicating with the main oil passage of the engine, an inner cavity 2 not communicating with the oil flow passage 1, and an inner cavity 2 located in the inner cavity 2 The static contact 3 in the middle, the movable contact 4 that is connected or separated from the static contact 3 is controlled by the oil pressure entering the oil flow channel 1, and the breathing channel 5 that communicates the inner cavity 2 with the outside world ; Specifically, the side wall of the above-mentioned inner chamber 2 is composed of the housing 11 and the terminal 12 connected to the housing 11,...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses an engine oil pressure-sensitive switch, and belongs to the field of engine oil pressure detection. The switch comprises an oil flowing channel communicated with an engine main oil way, an inner cavity not communicated with the oil flowing channel, a static contact located in the inner cavity, a movable contact, a breathing channel communicated with the inner cavity with the exterior and a breathable film covering the breathing channel, wherein connection or separation of the static contact and the movable contact can be controlled through the oil pressure in the oil flowing channel. The breathing channel is covered through the breathable film, exterior liquid like muddy water cannot enter the inner cavity directly through the breathing channel, the false alarm problem appearing due to the water droplet conduction between the movable contact and the static contact can be solved, and the problem that due to the fact that the liquid enters the inner cavity, an assembly is rusty, and the power failure appears is solved.

Description

technical field [0001] The invention relates to the field of engine oil pressure detection, in particular to an oil pressure sensitive switch. Background technique [0002] With the continuous development of gasoline engine technology, especially the improvement of small high-speed direct-injection gasoline engine technology, the lubrication effect formed by engine oil in the engine is particularly important. Reduce the frictional resistance and make the operation more smooth, especially the connecting rod bearing pair and the main bearing pair must have proper oil pressure, which is also the premise to ensure the reliable operation of each friction pair, so it is necessary to detect the oil pressure of the main oil passage of the engine , when it is detected that the engine oil pressure is lower than the preset pressure value, the sound and light alarm system will be turned on. The detection of oil pressure is generally through the oil pressure switch sensor, which is usua...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): F01M1/20
CPCF01M1/20
Inventor 倪伟张欣林李亚南
Owner CHERY AUTOMOBILE CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products