Wireless transmission device for measuring information in air cylinder sleeve of internal combustion engine and installation method of wireless transmission device
A technology for internal combustion engine cylinders and measurement information, applied in internal combustion engine testing, signal transmission systems, instruments, etc., can solve the problems of great influence on signal processing reliability, low signal-to-noise ratio, and small application range
Pending Publication Date: 2021-11-16
天津内燃机研究所(天津摩托车技术中心)
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Problems solved by technology
[0004] Wireless transmission mainly includes infrared transmission and radio frequency signal transmission. The infrared transmission method is very sensitive to the transmission channel and direction, and the scope of application is small; the radio frequency signal transmission is affected by the shielding of the iron-based cylinder liner and the box wall. The signal-to-noise ratio of externally received signals is very low, which greatly affects the reliability of signal processing
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[0036] The present invention will be further described in detail below by specific embodiments and drawings:
[0037] See Figure 1 - Figure 3 Internal physical quantity test, such as temperature, pressure test, when the measurement information is required to transmit measurement information to the cabinet, including infrared communication methods or radio frequency signal transmission methods, infrared communication methods There is a need for a suitable infrared transmission channel that does not have such transmission conditions in many internal combustion chassis, and the radio frequency signal may be shielded by various metal materials in the box in the box. The present invention realizes that the sensor acquisition result in the inner cylinder liner is transmitted in real time to the box in real time through wireless mode, and the implementation process includes the following steps:
[0038] Step 1, the installation of the device in the cylinder
[0039] The inner internal de...
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The invention discloses a wireless transmission device for measuring information in an air cylinder sleeve of an internal combustion engine and an installation method of a wireless transmission device. Two devices are designed in a box body, one device is located in the air cylinder sleeve, conducts signal transmission in a 2.4 GHz wireless transmission mode, and transmits wireless signals to the space outside the air cylinder sleeve of the internal combustion engine by means of the characteristic that the air cylinder sleeve is open to the outside at a connecting rod; and the other device is positioned in the inner space of the box body outside the air cylinder sleeve, receives signals from the interior of the air cylinder sleeve in a 2.4 GHz wireless transmission mode, and converts electric signals into magnetic signals through an electromagnetic conversion circuit to realize wireless transmission penetrating through the wall of the box body made of an aluminum material. One device is designed outside the box body and used for receiving the magnetic signals transmitted through the box body wall in the box body and then converting the magnetic signals into the electric signals. Through the above design, sensor information collected on a piston in the air cylinder sleeve of the internal combustion engine is finally transmitted out of the box body of the internal combustion engine in a wireless mode.
Description
Technical field [0001] The present invention relates to the technical field of wireless transmission devices, in particular, a wireless transmission device and a mounting method thereof in the internal combustion engine cylinder line. Background technique [0002] The measurement information directed by the piston portion in the internal combustion engine can comprise temperature, pressure, etc. Temperature as an example, the temperature measurement method in the piston mainly includes electrical measuring and non-electrical measuring method, and the measurement information can be transmitted to the outside world. The method mainly includes wireless transmission methods and wired transmission methods. [0003] Wired transmission methods require transformation of the box wall, then mount the temperature sensor in the piston, and connect the connection to the cylinder out of the cylinder head by connecting the cylinder to the high speed movement of the piston. Requires very high. ...
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Login to View More IPC IPC(8): G01M15/05G08C17/02
CPCG01M15/05G08C17/02
Inventor 崔宇航向彦均郑越洋史春涛
Owner 天津内燃机研究所(天津摩托车技术中心)