Compression ratio measurement system applied to diesel fuel cetane number determination machine

Abstract

The invention discloses a compression ratio measurement system applied to a diesel fuel cetane number determination machine. The compression ratio measurement system comprises: an air cylinder cover, a fixed part, a rotary part, a transverse movable part, and a locking part, wherein the air cylinder cover is provided with a cylindrical pre-combustion chamber which is communicated with a combustion chamber through a vortex channel; a nozzle mounting hole with a cooling water jacket is formed in an eccentric position directly in front of the pre-combustion chamber and is communicated with the pre-combustion chamber; the fixed part is arranged at the outer part of the pre-combustion chamber and is connected with the air cylinder cover; the rotary part is arranged in the fixed part, is in contact positioning connection with the fixed part and is used for realizing rotation; the transverse movable part is arranged in an inner cavity of the pre-combustion chamber, the rotary part and the fixed part and is connected with the rotary part, so that the transverse movable part does transverse movement when the rotary part rotates; the transverse movable part comprises a compression ratio plug; the locking part is arranged in an inner cavity of the rotary part and the transverse movable part, and is used for sealing the compression ratio plug in the pre-combustion chamber.

Description

technical field [0001] The invention relates to a measuring system, in particular to a compression ratio measuring system applied to a diesel cetane number measuring machine. Background technique [0002] In the prior art, the compression ratio measurement system of the diesel cetane number measuring machine adopts manual reading of the scale, and its accuracy and stability are greatly affected by human interference. The test reading and test results need to be calculated manually, which cannot be automated, and in the actual use It requires operators to have rich experience, and it is also difficult for maintenance and repair. Therefore, it takes a long time for the diesel cetane number measuring machine with the compression ratio measurement system of this structure to reach the required working conditions, and the workload is heavy, which also affects the stability of the machine and the accuracy of measuring samples. Contents of the invention [0003] The purpose of t...

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Problems solved by technology

[0002] In the prior art, the compression ratio measurement system of the diesel cetane number measuring machine adopts manual reading of the scale, and its accuracy and stability are greatly affected by human interference. The test reading and test results need to be calculated manually, which cannot be automated, and in the actual use It requires operators to have rich experience, and it is also difficult for maintenance and repair.

Therefore, it takes a long time for the diesel cetane number measuring machine with this structure compression ratio measurement system to reach the required working conditions, and the workload is heavy, which also affects the stability of the machine and the accuracy of measuring samples.

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