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Flywheel structure of engine and engine

A technology for engines and flywheels, applied to flywheels, mechanical equipment, vibration suppression adjustments, etc., can solve problems such as knocking noise in the car, and achieve the effects of reducing stiffness, avoiding knocking noise, and reducing inertia

Pending Publication Date: 2021-06-18
ZHEJIANG GEELY HLDG GRP CO LTD +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the first aspect of the present invention is to provide an engine flywheel structure to solve the technical problem in the prior art that the knocking excitation of the crankshaft flywheel group will cause knocking noise in the car

Method used

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  • Flywheel structure of engine and engine
  • Flywheel structure of engine and engine
  • Flywheel structure of engine and engine

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Embodiment Construction

[0030] 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 and are intended to explain the present invention and should not be construed as limiting the present invention.

[0031] figure 1 is a schematic front view of a flywheel structure 100 of an engine according to an embodiment of the present invention. Such as figure 1 As shown, in a specific embodiment, the flywheel structure 100 of the engine includes a flywheel front cover 10, and the flywheel front cover 10 is provided with at least one set of bolt holes 11 for connecting with the engine crankshaft (not shown in the figure) and using At least one group of through holes 12 for reducing the stiffness of the flywheel structure 100, wherein e...

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Abstract

The invention provides a flywheel structure of an engine and the engine, and relates to the field of vehicle engines. At least one set of bolt holes used for being connected with an engine crankshaft and at least one set of through holes used for reducing the rigidity of the flywheel structure are formed in a flywheel front cover, wherein each set of bolt holes are evenly distributed in a first circular ring, each set of through holes are evenly distributed in a second circular ring, and the first circular ring and the second circular ring are concentrically arranged. Considering that the excitation of bending achieved when a crankshaft flywheel group works is not only related to combustion excitation, but also related to the rotational inertia of the flywheel structure at the rear end of the engine, the rigidity of the flywheel structure is reduced by forming the through holes, and therefore the inertia of the flywheel structure is reduced, and the frequency of the flywheel structure is changed. Therefore, the inherent frequency of the flywheel structure is kept away from the frequency of a power assembly and a whole vehicle suspension, and knocking noise generated in a vehicle is avoided.

Description

technical field [0001] The invention relates to the field of vehicle engines, in particular to a flywheel structure of the engine and the engine. Background technique [0002] When the engine is working, the crankshaft and flywheel of the engine are bent and deformed when the combustion pressure rise rate of each cylinder varies greatly. This bending deformation causes different knocking excitations for each bearing seat. Especially the knock excitation is more obvious at the rear end of the crankshaft flywheel set. When the frequency of this excitation is close to the frequency of the vehicle's powertrain and suspension, an obvious low-frequency knocking noise will be generated inside the vehicle. The source of this noise is at the rear end bearing seat of the engine. In order to solve this problem, the traditional solutions in the industry include: [0003] 1. Optimize the combustion system to reduce the bending deformation excitation of the crankshaft and flywheel grou...

Claims

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Application Information

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IPC IPC(8): F16F15/30F16F15/315
CPCF16F15/30F16F15/315
Inventor 孙少伟杨天宇王瑞平肖逸阁
Owner ZHEJIANG GEELY HLDG GRP CO LTD
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