Internal combustion engine negative pressure sensor

A technology of negative pressure sensor and internal combustion engine, which is used in internal combustion engine testing, fluid pressure measurement involving magnet displacement, etc., can solve problems such as low signal sensitivity and accuracy, and cannot reflect internal combustion engine load changes, and improve synchronization and accuracy. , The effect of reducing the phenomenon of malfunction, and improving the accuracy and sensitivity of the action

Inactive Publication Date: 2007-08-22
应城市新世纪摩托车配件有限责任公司
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Problems solved by technology

The sensor can be used to detect the acceleration signal of the carburetor engine, but the sensitivity and accuracy of the signal sent by the sensor are low, especially the output

Method used

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  • Internal combustion engine negative pressure sensor

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Embodiment Construction

[0013] The present invention will be described in further detail below in conjunction with accompanying drawing and specific embodiment:

[0014] In Figure 1, body 1, spring seat 2, soft spring 3, spring joint 4, diaphragm 5, adjusting nut 6, adjusting screw 7, small nut 8, large nut 9, wire 10, circuit board 11, end cover 12 , Gasket 13, Hall element 14, magnet 15, hard spring 16, damping hole 17, air hole A1, negative pressure chamber B1, stabilizing chamber C1, normal pressure chamber D1.

[0015] Referring to Fig. 1 , the internal combustion engine negative pressure sensor has an air hole A1 on the body 1 which communicates with the intake pipe of the internal combustion engine, and a diaphragm 5 is arranged on the body 1, and the body 1 and the end cover 12 are connected to form a housing, between the body 1 and the end cover 12 Diaphragm 5 is provided, and diaphragm 5 divides its two ends into stable chamber C1 and normal pressure chamber D1. There is a small hole on the...

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Abstract

Navigate pressure sensor of internal-combustion engine uses electromagnetic element to measure its admission pressure. Set a diaphragm 5 between main body 1 and end cap 12. Inner space of 1 is divided into a negative pressure chamber B1 and a stable pressure chamber C1 by a spring base 2, which has a damped pore 17. B2 connects with blow hole A1. A spring with gather elasticity is set between 2 and 5. The other side of 5 has a magnet 15, to which sets a Hall element 14 in 12. The invention has merits of sensitive reaction, high action precision, extensive measuring range, high working stability, small capacity, low cost and convenient equipment. It can reflect workload change of internal-combustion engine exactly and can be applied to determine admission pressure and workload of various internal-combustion engines.

Description

Technical field [0001] The invention relates to a negative pressure sensor which uses an electromagnetic element to measure the gas pressure of an internal combustion engine. In particular, an internal combustion engine negative pressure sensor capable of measuring the working load of the internal combustion engine. Background technique [0002] There are many devices for measuring negative pressure at present, such as the negative pressure sensor used for gasoline engines on cars, but its price is more expensive. Currently, the sensors used to measure the load of gasoline engines on motorcycles are mainly potentiometer-type throttle sensors. There are mainly two types of linear potentiometers and rotary potentiometers, which are linked together with the throttle. Although the price is not high, installation and adjustment are troublesome. [0003] Chinese patent announcement number: CN 2709962Y, date of announcement: July 13, 2005, name of invention: "Negative pressure sen...

Claims

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Application Information

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IPC IPC(8): G01M15/04G01L9/14
Inventor 李金生夏金辉熊志刚
Owner 应城市新世纪摩托车配件有限责任公司
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