Engine piston general fatigue test device

A fatigue test and engine technology, applied in the direction of measuring devices, testing of mechanical components, testing of machine/structural components, etc., to achieve good versatility, ensure versatility, and compact structure

Inactive Publication Date: 2014-06-25
CHINA NORTH ENGINE INST TIANJIN
View PDF5 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to solve the problems existing in the existing piston fatigue test device, the present invention proposes a general fatigue test device for engine pistons, so as to achieve the purpose of synchronous testing of two pistons and greatly reduce the test period and cost

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Engine piston general fatigue test device
  • Engine piston general fatigue test device
  • Engine piston general fatigue test device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0053] A universal fatigue test device for engine pistons according to the present invention includes a pressure-bearing cylinder (1), a test piston (6), and an adjustment cylinder liner (2), a bearing end cover (3), and a piston seat (4) , piston pin (5), seal (7), seal (8), seal (9), high-strength bolt (10), high-strength bolt (11), low-pressure oil inlet hole (12), high-pressure oil Oil inlet hole (13), seal (14), distribution oil passage (15), high pressure ring groove (16), hydraulic oil passage (17), pressure test hole (18), pressure test hole (19), pressure test hole (20), hydraulic oil passage (21).

[0054] The pressure-bearing cylinder (1) is used to support the adjustment cylinder liner (2), the load-bearing end cover (3) and the test piston (6), and is used to penetrate the hydraulic oil circuit; the pressure-bearing cylinder (1) is provided with left and right through , The stepped cylinder hole for installing and adjusting the cylinder liner (2); the side of the p...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention provides an engine piston general fatigue test device which comprises a bearing cylinder (1), a test piston (6), an adjustment cylinder sleeve (2), a bearing end cover (3), a piston seat (4) and a piston pin (5). The bearing cylinder (1) is provided with a stepped cylinder hole used for mounting the adjustment cylinder sleeve (2), and the stepped cylinder hole goes through the left and right sides. The outer circle of the adjustment cylinder sleeve (2) is a stepped structure and is matched with the cylinder hole of the bearing cylinder (1). Bolt holes used for connecting the bearing end cover (3) are uniformly distributed at two sides of the bearing cylinder (1). The periphery of the bearing end cover (3) is provided with a bolt hole which is connected with the bearing cylinder (1), and the middle of the bearing end cover (3) is provided with a bolt hole and a positioning counterbore which are connected with the piston seat (4). An electro-hydraulic servo system produces a pulsating load. A phase difference between high voltage and low voltage effects is 180 degrees. According to the device, a two-opposed-piston horizontal layout mode is employed, a simulation combustion chamber is shared by two pistons, the synchronous test of two pistons is ensured, and the test cycle and cost are greatly reduced.

Description

technical field [0001] The invention belongs to the technical field of engine piston fatigue tests, and in particular relates to a general fatigue test device for engine pistons. Background technique [0002] As a component part of the engine combustion chamber, the piston is subjected to periodic action of high temperature and high pressure during operation, and its structural strength and fatigue reliability are very important. Especially the top of the piston and the bearing part of the piston pin hole due to overload, overspeed and abnormal working conditions, as well as the explosion pressure and speed increase after the engine is strengthened, the load on the piston is increased, and the piston ring land, pit, piston pin hole and other positions are cracked. . In addition, in the development stage of new products, the weak links of the fatigue strength of the piston structure are found in time, and the feasibility of the verification scheme is often verified by compon...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): G01M13/00
Inventor 狄建兵钱志高张晓静许春光唐智高丽英侯晔星
Owner CHINA NORTH ENGINE INST TIANJIN
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap