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Internal combustion engine negative pressure sensor

A negative pressure sensor and internal combustion engine technology, which is applied in the direction of internal combustion engine testing, fluid pressure measurement involving magnet displacement, etc., can solve the problems of inability to reflect the load change of the internal combustion engine, low signal sensitivity and accuracy, etc., to reduce malfunctions and improve Synchronization and accuracy, the effect of sensitivity improvement

Inactive Publication Date: 2009-02-25
应城市新世纪摩托车配件有限责任公司
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AI Technical Summary

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 of the sensor is mainly the switch signal indicating on and off, which cannot reflect the operation of the internal combustion engine. Conditions of load change during the process

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] exist figure 1 In, 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, pressure stabilizing chamber C1, and normal pressure chamber D1.

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

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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: CN2709962Y, announcement date: July 13, 2005, invention name: "Negative Pressure Sensor", w...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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