Remote measurement device and method for measuring oil film thickness between piston and cylinder liner based on capacitance method

Abstract

The invention discloses a telemetry device and method for measuring oil film thickness between a piston and a cylinder liner based on a capacitance method, and belongs to the technical field of oil film thickness measurement and control between a piston and a cylinder liner. The invention realizes the telemetry measurement of the oil film thickness between the piston and the cylinder liner based on the capacitance method, and can realize data visualization display and data storage for the telemetry measurement data, and has the following advantages: (1) By placing the capacitive electrode probe to be measured on the On the piston, it is possible to directly track the change of the oil film thickness when the piston moves; (2) Only by fitting and improving the piston to install the capacitive electrode probe to be measured, the telemetry measurement of the oil film thickness between the piston and the cylinder liner can be realized, which is significantly reduced. Processing complexity and cost; (3) By using sliding conductors and wires to connect the cylinder liner and the capacitor acquisition chip instead of directly using wires to connect, the installation structure can be greatly simplified, and the measurement caused by the wires entangled in the moving parts in the cylinder can be reduced. Possibility of device damage.

Description

technical field [0001] The invention relates to an oil film thickness measurement device and a working method based on wireless transmission technology, and belongs to the technical field of oil film thickness measurement and control between a piston and a cylinder liner. Background technique [0002] With the development of social modernization, the environmental protection awareness of energy saving and emission reduction is deeply rooted in the hearts of the people. Internal combustion engines have a wide range of applications and are widely used in vehicles, ships, aerospace, power stations and other industries. As a component that operates under extreme working conditions, the internal combustion engine relies on fuel combustion to provide power to make the piston move at high speed in the cylinder liner, and there must be serious friction and wear problems. In addition, how to reduce friction and wear in internal combustion engines has always been a hot spot in the re...

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Problems solved by technology

[0005] Aiming at the traditional capacitance-based method for measuring the thickness of the oil film between the piston and the cylinder liner when the engine is running, it cannot directly monitor the change of the oil film thickness between the predetermined measurement point of the piston and the cylinder liner, and the engine has been greatly changed. The purpose of the telemetry device and method for measuring the thickness of the oil film between the piston and the cylinder liner is to realize the telemetry measurement of the oil film thickness between the piston and the cylinder liner based on the capacitance method, and to realize data visualization and data storage for the telemetry measurement data. In addition, Placing the capacitance acquisition module inside the piston brings the following advantages: (1) By placing the capacitance electrode probe to be measured on the piston, it can directly track and measure the change of oil film thickness when the piston moves; (2) only by installing the piston to be The adaptation and improved processing of the capacitance measuring electrode probe can realize the remote measurement of the thickness of the oil film between the piston and the cylinder liner without modifying the engine body, thereby significantly reducing the processing complexity and cost; (3) connecting the cylinder by using sliding conductors and wires The sleeve is connected with the capacitive acquisition chip instead of directly using wires, which can greatly simplify the installation structure of the connecting device and reduce the possibility of damage to the measuring device caused by wires being entangled in moving parts in the cylinder

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