Resonance detection method and system for dual-mass flywheel
A dual-mass flywheel and resonance detection technology, which is applied in the field of resonance detection methods and systems for dual-mass flywheels, can solve problems such as one-sided, inability to effectively judge whether the dual-mass flywheel is resonant, and inability to protect the dual-mass flywheel well. Avoid damaging effects
Active Publication Date: 2017-02-01
GREAT WALL MOTOR CO LTD
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Problems solved by technology
This method is too simple and one-sided, and cannot effectively judge whether the dual-mass flywheel resonates under various operating conditions of the vehicle, so it cannot protect the dual-mass flywheel well
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[0027] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.
[0028] 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 refe...
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The invention provides a method and a system for resonance detection of a dual mass flywheel. The method comprises the steps of determining whether the dual mass flywheel satisfies a resonance condition according to engine operating parameters, a vehicle speed and a vehicle state, if determining that the dual mass flywheel satisfies the resonance condition, determining whether the fluctuation of an engine rotating speed is greater than a predetermined fluctuation threshold, if the fluctuation of the engine rotating speed is greater than the predetermined fluctuation threshold, starting counting, when the count is greater than a predetermined count, determining whether a first resonance condition is valid according to the engine rotating speed and an ignition switch signal, and if determining that the first resonance condition is valid, determining the resonance of the dual mass flywheel. The method for the resonance detection of the dual mass flywheel is capable of determining whether the dual mass flywheel is resonant immediately and accurately.
Description
technical field [0001] The invention relates to the technical field of automobiles, in particular to a resonance detection method and system for a dual-mass flywheel. Background technique [0002] The function of the dual-mass flywheel is to increase the elastic buffer angle between the two-stage masses of the flywheel, better play the role of vibration isolation and damping, reduce the natural frequency between the engine and the transmission, limit the resonance speed below the idle speed, and avoid collision with The operating speed of the engine resonates. When the engine of the car is running, the torsional external force of the pistons acting on the crankshaft changes periodically, so the crankshaft will undergo forced torsional vibration relative to the flywheel. Due to the inertia of the mass, the crankshaft will undergo free torsional vibration, and these two vibrations may produce a resonance. If the natural frequency of the automobile drive train coincides with ...
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IPC IPC(8): G01M13/02G01H17/00
Inventor 王亮刘宏洋杨彬牛立亚李庆峰王宗勃侯亮林鑫刘健曹付广沈国华任向飞李颖涛
Owner GREAT WALL MOTOR CO LTD