Engine timing measurement method and system and storage medium

Abstract

The invention discloses an engine timing measurement method and system and a storage medium, and the method comprises the following steps: measuring an engine crankshaft rotation angle through an angle marker, measuring an engine crankshaft position through a crankshaft position sensor, and outputting an engine crankshaft position signal; measuring the pressure in an engine cylinder through a cylinder pressure sensor and outputting a cylinder pressure signal; acquiring a compression top dead center position of a cylinder piston of the engine through the cylinder pressure sensor, and defining the top dead center position as 0 degree; and connecting the crankshaft position signal and the cylinder pressure signal into a lower computer combustion analyzer, displaying the crankshaft position signal and the cylinder pressure signal through an upper computer, and measuring the angle of the tooth missing position to realize measurement of engine timing. Existing resources can be effectively utilized, the measurement precision is improved, the labor intensity is reduced, the test time is shortened, and the working efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of engine timing measurement, in particular to an engine timing measurement method, system and storage medium. Background technique [0002] Engine timing is the control benchmark of the electronic control system, and it is the basic condition for the fuel injection and ignition to be executed at the correct time, and the variable valve to be in the correct position at the correct time. Before the engine bench calibration or performance test starts, it is necessary to check whether the engine timing signal is consistent with the design value, so as to ensure that the engine state is accurate, the test is safe, and the data is valid. In the process of engine consistency check and troubleshooting, timing check is also indispensable. [0003] Timing inspection is usually to confirm whether the position relationship between the missing tooth position of the crankshaft signal plate and the compression top dead c...

AI Technical Summary

Problems solved by technology

[0005] 1. The timing relationship cannot be presented intuitively

[0006] 2. The measurement is difficult and the error is large: when looking for the top dead center, the dial indicator probe enters the combustion chamber from the spark plug installation hole to touch the top of the piston, slowly and carefully rotate the crankshaft, and observe the reading of the dial indicator at the same time; the value is obtained by visually observing the reading, and the error Big

[0007] 3. There are many processes, time-consuming and labor-intensive: it is necessary to remove the ignition coil, spark plug, cylinder head cover, etc. of a cylinder, install the dial indicator, angle plate, pointer, manually rotate the crankshaft, read, and record

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