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Straight cylinder block capable of improving machine body rigidity and NVH performances

A technology of cylinder block and machine body, which is applied to the sealing device of the engine, cylinder, cylinder head, etc., which can solve the problems of insufficient strength and rigidity, poor NVH performance, and low supercharging degree, and achieve compact structure, good rigidity, and strong force uniform effect

Active Publication Date: 2019-05-24
GUANGXI YUCHAI MASCH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, although the existing in-line high-power engine cylinder block meets the high-power requirements, the degree of supercharging is not high, the strength and stiffness are insufficient, and the NVH performance is poor.

Method used

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  • Straight cylinder block capable of improving machine body rigidity and NVH performances
  • Straight cylinder block capable of improving machine body rigidity and NVH performances
  • Straight cylinder block capable of improving machine body rigidity and NVH performances

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Embodiment Construction

[0023] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings, but it should be understood that the protection scope of the present invention is not limited by the specific embodiments.

[0024] Unless otherwise expressly stated otherwise, throughout the specification and claims, the term "comprising" or its transformations such as "including" or "including" will be understood to include the stated elements or components, and not Other elements or other components are not excluded.

[0025] Such as Figure 1 to Figure 6 As shown, according to a preferred embodiment of the present invention, an in-line cylinder block for improving body stiffness and NVH performance includes: a cylinder block top 1 and a cylinder block skirt 2. The cylinder block top 1 includes a plurality of cylinders arranged in a straight line, and the cylinder block A cylinder liner 3 is provided in the center to surround the cylinder bore ...

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Abstract

The invention discloses a straight cylinder block capable of improving machine body rigidity and NVH performances. The straight cylinder block comprises a cylinder block top and a cylinder body skirtpart, wherein the cylinder block top comprises multiple cylinders linearly arranged; cylinder jackets are arranged in cylinder blocks; cylinder holes are encircled around the cylinders; multiple reinforcing ribs are arranged at the internal and the external of the cylinder block skirt part; the wall thicknesses of the cylinder blocks are 5-9 mm; the cylinder diameters are 4-5%; the cylinder centerdistances are 1.2-1.5 times of the cylinder diameters; and the piston travels of the cylinder blocks are arranged as 1.1-1.2 times of the cylinder diameters. Through reasonable structure design and parameter design, the straight cylinder block prominently improves the machine body strength and the NVH performances, is smaller in machine body deformation and more compact in structure, and obviously reduces the weight.

Description

Technical field [0001] The invention relates to a cylinder block structure, in particular to an in-line cylinder block that improves the rigidity and NVH performance of the block. Background technique [0002] The cylinder block is the main body of the engine, which connects each cylinder and the crankcase into one body, and is a support frame for installing pistons, crankshafts, and other parts and accessories. The in-line cylinder block is currently the longest history and the most widely used cylinder layout. All its cylinders are arranged side by side in a plane. Its cylinder block and crankshaft are simple in structure, and it uses a cylinder head, so the manufacturing cost is low. High stability, good low-speed torque characteristics, low fuel consumption, compact size, and a wide range of applications. But its disadvantage is lower power. [0003] NVH, namely noise, vibration and harshness (abbreviation of Noise, Vibration, Harshness). NVH performance is a comprehensive i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02F1/00F02F11/00
Inventor 黄第云沈捷黄永仲李伟毛平安潘昊
Owner GUANGXI YUCHAI MASCH CO LTD
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