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Piezoelectric type single injection measuring instrument

A single injection and measuring instrument technology, applied in the direction of measuring devices, fuel injection devices, instruments, etc., can solve the problems of short service life, complex structure, low test accuracy, etc., achieve long service life, avoid errors, test principles and The effect of simple structure

Inactive Publication Date: 2021-04-13
CHINA NORTH ENGINE INST TIANJIN
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In view of this, the present invention aims to propose a piezoelectric single injection measuring instrument to solve the problems of complex structure, low test accuracy and low service life in the prior art

Method used

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  • Piezoelectric type single injection measuring instrument

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Embodiment Construction

[0021] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0022] In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", " The orientations or positional relationships indicated by "vertical", "horizontal", "top", "bottom", "inner" and "outer" are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and Simplified descriptions, rather than indicating or implying that the device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and thus should not be construed as limiting the invention. In addition, the terms "first", "second", etc. are used for descriptive purposes only, and should not be understood ...

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Abstract

The invention provides a piezoelectric type single injection measuring instrument. A cavity is arranged in a single injection measuring instrument body, a piezoelectric crystal test module is arranged in the cavity, the piezoelectric crystal test module is in signal connection with a data acquisition control module through a data cable, one side of the single injection measuring instrument body is provided with an oil drainage channel, the cavity communicates with the oil drainage channel, and an oil drainage valve is installed in the oil drainage channel. An oil atomizer installation table is installed above the single injection measuring instrument body, the cavity communicates with the oil atomizer installation table through an oil inlet channel, pressing screws and an oil atomizer installation adapter are installed above the oil atomizer installation table, and an oil atomizer to be tested is inserted into the upper portion of the oil atomizer installation adapter. The oil atomizer installation adapter is located between the two pressing screws. According to the piezoelectric type single injection measuring instrument, the oil atomization rule of the oil atomizer can be measured more accurately, experimental test data do not need to be collected through a sensor, and measurement errors are reduced.

Description

technical field [0001] The invention belongs to the field of fuel injection test equipment, in particular to a piezoelectric single injection measuring instrument. Background technique [0002] At present, the fuel injection characteristic test of the fuel injector is mainly carried out with a spring displacement sensor type single injection measuring instrument. , the fuel pushes and compresses the spring in the fuel chamber to cause displacement, the displacement of the spring is measured by the displacement sensor, and then the displacement data is converted into an electrical signal, which is processed by the data acquisition system and converted into fuel injection data; when the injector injects fuel After the end, the oil drain valve connected to the fuel chamber opens, the fuel flows out, and the spring returns. The fuel injection volume measured by the spring displacement sensor type single injection measuring instrument has a large error, and the error sources are...

Claims

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Application Information

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IPC IPC(8): F02M65/00
CPCF02M65/00
Inventor 孙树平吴小军奚星徐春龙高怡顾娇娇张子威李春晖
Owner CHINA NORTH ENGINE INST TIANJIN
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