Failure detection method, device and system of internal combustion engine crankshaft torsional vibration damper
A torsional vibration damper and detection device technology, which is applied in the direction of internal combustion engine testing, etc., can solve problems such as failure to detect crankshaft damper failure in time, and achieve the effect of preventing damage
Inactive Publication Date: 2016-06-29
WEICHAI POWER CO LTD
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[0007] Aiming at the defects of the prior art, the present invention provides a failure detection method and system of an internal combustion engine crankshaft torsional vibration damper to solve the technical problem that the prior art requires manual intervention and cannot detect the failure of the crankshaft damper in time
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[0037] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are the Some, but not all, embodiments are invented.
[0038] It should be noted that, in this article, "first" and "second" are only used to distinguish the same names, rather than implying the relationship or order between these names.
[0039] Such as figure 1 As shown, this embodiment discloses a failure detection method for a crankshaft torsional vibration damper of an internal combustion engine, which may include the following steps 101 to 104:
[0040] 101. Obtain the rotational speed signal of the signal disc installed on the crankshaft of the internal combustion engine collected by the rotational speed sensor.
[0041] ...
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The invention discloses a failure detection method, device and system of an internal combustion engine crankshaft torsional vibration damper, and relates to the technical field of internal combustion engines. The failure detection method comprises the steps of: obtaining a rotate speed signal, collected by a rotate speed sensor, of a signal panel installed on an internal combustion engine crankshaft; determining a torsion amplitude of the crankshaft based on the obtained rotate speed signal; judging whether the torsion amplitude of the crankshaft is larger than a preset torsion amplitude threshold of the internal combustion engine crankshaft torsional vibration damper; and if yes, determining that the internal combustion engine crankshaft torsional vibration damper fails. Compared with the prior art, the failure detection method, device and system of an internal combustion engine crankshaft torsional vibration damper are capable of discovering the failure of internal combustion engine crankshaft torsional vibration damper in time and preventing each part of the internal combustion engine from being damaged without manual intervention.
Description
technical field [0001] The invention relates to the technical field of internal combustion engines, in particular to a failure detection method, device and system for a crankshaft torsional vibration damper of an internal combustion engine. Background technique [0002] The internal combustion engine shafting is the general term of the crankshaft and the moving parts connected to it. It is a typical elastic system with a certain natural frequency. During the working process of the internal combustion engine, the magnitude and direction of the force transmitted from the gas pressure to the crank pin through the connecting rod are periodically changed. This periodically changed excitation force acts on the crankshaft, causing the instantaneous angular velocity of the crankshaft to change. It changes periodically. Due to the large moment of inertia of the flywheel fixed on the crankshaft, its instantaneous angular velocity can basically be regarded as uniform. In this way, th...
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IPC IPC(8): G01M15/06
CPCG01M15/06
Inventor 张振京黄国龙张鲁兵宋国梁孙潇
Owner WEICHAI POWER CO LTD