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Air cylinder pressure measuring device

A cylinder pressure and measuring device technology, applied in measuring devices, electromagnetic measuring devices, measuring rapid changes, etc., can solve problems such as damage, short service life, unsuitable for measuring cylinder pressure, etc., and achieve long service life, simple installation and The effect of disassembly and low cost

Inactive Publication Date: 2011-01-26
MAN B & W DIESEL AS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, these measuring devices suffer from the deposition of combustion residues
As a result, the known cylinder pressure measuring devices in the combustion chamber in practice have only a short service life and are therefore not suitable for reliable detection of the cylinder pressure over a relatively long operating time.

Method used

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Embodiment Construction

[0025] 1 to 5 show the structural components of a preferred embodiment of the cylinder pressure measuring device according to the invention. The cylinder pressure measuring device is used for indirectly measuring the cylinder pressure in a cylinder of an internal combustion engine outside the cylinder combustion chamber, wherein the proportional extension of the tie rod due to the cylinder pressure of the cylinder to be monitored is used for measuring the cylinder pressure.

[0026] The cylinder pressure measuring device according to the invention has a bearing sleeve 10 (see FIG. 1 ), wherein the bearing sleeve 10 is divided in the axial direction, ie in the direction of the arrow 11 . The bearing sleeve 10 is preferably divided into two sections 12 and 13 in the axial direction by division or separation. The axial division of the bearing sleeve 10 makes it possible to mount the cylinder pressure measuring device according to the invention in the installed or installed state ...

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Abstract

The device has a carrying sleeve (10) divided in axial direction into two sections (12, 13) and fastened to a tie rod of a cylinder by a fastening device such that the sleeve partially encloses the tie rod. The carrying sleeve is attached to strain gauges, where an elongation of the carrying sleeve and elongation of the strain gauges produces an elongation of the tie rod, which is produced by cylinder pressure to be measured. The strain gauges are interconnected in a Wheatstone bridge for compensating bends of the tie rod.

Description

technical field [0001] The invention relates to a cylinder pressure measuring device for an internal combustion engine. Background technique [0002] In order to ensure optimum operation of internal combustion engines, such as large diesel or gas engines, measuring technology is required to detect the cylinder pressure in the cylinders of the internal combustion engine and to use it, for example, to regulate the ignition behavior of the internal combustion engine. For this purpose, the cylinder pressure in the internal gas cylinder must be continuously measured. [0003] The cylinder pressure measuring devices known in practice measure the cylinder pressure of the cylinder of the internal combustion engine directly or within the combustion chamber of the cylinder. Such cylinder pressure measuring devices inside the combustion chamber are subject to high thermal and mechanical loads. In addition, these measuring devices suffer from the deposition of combustion residues. As...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M15/08G01L23/12
CPCG01L23/18G01B7/18G01M15/08
Inventor S·汉斯勒S·肖尔茨
Owner MAN B & W DIESEL AS