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Piston device and system for testing engine cylinder bore deformation

A technology for engine cylinders and pistons, applied in the field of piston devices and systems for testing the deformation of engine cylinder bores, to achieve the effects of small errors, reduced emissions, and reliable operation

Active Publication Date: 2020-11-13
BEIJING BORGWARD AUTOMOBILE CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a piston device and a system for testing the deformation of the engine cylinder bore to solve the problem that the deformation of the engine cylinder bore cannot be tested simply and reliably

Method used

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  • Piston device and system for testing engine cylinder bore deformation
  • Piston device and system for testing engine cylinder bore deformation
  • Piston device and system for testing engine cylinder bore deformation

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Embodiment Construction

[0042] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0043] In the present invention, unless stated to the contrary, the used orientation words such as "up, down, left, right" usually refer to the direction relative to the normal operation of the piston.

[0044] figure 1 is a cross-sectional view along the radial direction of the piston device provided according to an embodiment of the present invention. Such as figure 1 As shown, the piston device 100 may include: a piston body 101; and a displacement sensor 102, embedded and installed on the outer surface of the piston body 101, for detecting the deformation of the engine cylinder hole and outputting a detection signal during the working process of the piston...

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Abstract

The invention discloses a piston device and a system for testing engine cylinder bore deformation. The piston device comprises a piston body and a displacement sensor, wherein the displacement sensor is installed on the outer surface of the piston body in an embedded mode and is used for detecting deformation of an engine cylinder bore and outputting a detection signal in a working process of the piston body. Therefore, the system can realize a dynamic test of the engine cylinder bore deformation. In the working process of an engine, the system can be used for measuring the deformation quantity of the engine cylinder bore in real time so as to provide an accurate deformation value for cylinder body design, cylinder bore deformation simulating calculation and reliability test.

Description

technical field [0001] The invention relates to the field of engines, in particular to a piston device and a system for testing the deformation of engine cylinder bores. Background technique [0002] With the continuous advancement of science and technology, the automobile industry has achieved rapid development, the corresponding emission regulations are becoming more and more stringent, and users' requirements for engine performance are also increasing. The engine block is an important part of the internal combustion engine, and the deformation of the cylinder bore directly affects the fit between the block and the piston ring. Excessive deformation of the cylinder bore will deteriorate the sealing performance of the piston ring, and the air leakage of the internal combustion engine will increase accordingly, resulting in increased oil consumption and worsened emissions. Therefore, it is particularly important to quantify and strictly control the deformation of the cylind...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02F3/02G01B7/16
CPCF02F3/027G01B7/16
Inventor 魏丕勇冀国微秦向飞
Owner BEIJING BORGWARD AUTOMOBILE CO LTD
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