Integration combustion pressure sensor for internal combustion engine

Abstract

The invention belongs to the field of combustion control of internal combustion engines and sensors, and in particular relates to an integrated combustion pressure sensor for an internal combustion engine, which solves the problems that in the prior art, a piezoelectric element is firmly pressed in the whole system by a pretightening force, which causes the whole system to be affected by external vibration and temperature change and so on. The integrated combustion pressure sensor for the internal combustion engine has the characteristics of high accuracy, strong anti-jamming performance, low cost and so on, and is a pressure sensor which can be integrated into components of the prior internal combustion engine. The integrated combustion pressure sensor for the internal combustion engine consists of one or more piezoelectric force measurement elements, at least one rigid connecting element, at least one flexible connecting element, at least one internal combustion engine functional element, a shell and a plurality of accessories, wherein one end of each of the piezoelectric elements is connected to the rigid connecting element, while the other end is connected to the internal combustion engine functional element; and the rigid connecting element is connected to a rigid shell, and the internal combustion engine functional element is connected to the shell through the flexible connecting element. The integrated combustion pressure sensor for the internal combustion engine is arranged at the position of the internal combustion engine close to a combustion chamber, and is used for the measurement of combustion pressure of the internal combustion engine.

Description

Technical field: [0001] The invention belongs to the field of internal combustion engine combustion control and sensors, in particular to an integrated combustion pressure sensor for internal combustion engines. Background technique: [0002] In order to further reduce automobile energy consumption and reduce pollution, the automobile internal combustion engine control system urgently needs to measure the combustion status in real time to better control the combustion process. Among the physical parameters of the combustion process, the combustion pressure can accurately reflect the combustion process and is the most convenient to measure. [0003] The structure of modern automobile engines is extremely compact, and any change to the engine structure will affect the performance of the engine, so it is best to integrate the measurement of combustion pressure into existing components. Within the scope of existing engine technology, spark plugs for gasoline engines and glow pl...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide an integrated combustion pressure sensor for an internal combustion engine, which solves the problems in the prior art that the piezoelectric element is compressed in the entire system by preload, making the entire system susceptible to interference from external vibration and temperature changes. With the characteristics of high precision, strong anti-interference and low cost, it is a piezoelectric pressure sensor that can be integrated into existing internal combustion engine components

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