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Investigation on Equal-intensity Lightweight Design of Diesel Engine Block Based on Virtual Technology

Author: ChenDaLiang
Tutor: HaoZhiYong
School: Tianjin University
Course: Power Machinery and Engineering
Keywords: Diesel Engine Block Equal strength Lighter Modern design patterns Finite Element Analysis Modal test Vibration Analysis
CLC: TK421.2
Type: Master's thesis
Year: 2004
Downloads: 232
Quote: 6
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Abstract


Lightweight engine parts from either reduce costs or save energy point of view, people are continuing to pursue the goal. The field of China's single-cylinder diesel engine technology foundation is weak, the more strongly to this demand. The continuous rise in the market price of raw materials in recent years, making the single-cylinder diesel engine enterprise embarrassing burden, the weak point of the original is more prominent, has been unable to adapt to the rapidly changing market demands. Thus, the field of single-cylinder diesel engine urgent need to establish a new, modern design patterns to replace the traditional experience in product development and to improve the design mode. In this context, the S1100 single-cylinder diesel engine block for the study, carried out a detailed study of the body's strength lightweight design based on modern design theory and methods. This paper describes the application of modern design theory and methods in the field of internal combustion engine, virtual design is the direction of the modern design of the internal combustion engine. Lightweight design of the dynamic characteristics of the machine, the S1100 diesel engines machine vibration weight loss before and after optimization design study, the typical operating conditions of the machine vibration spectrum characteristics and machine vibration intensity value, evaluation based on light design. Based on modern design theory and method of parametric solid modeling techniques and finite element analysis techniques, S1100 diesel engine block, for example, the establishment of a complete internal combustion engine parts, such as the intensity of light design platform. Including the establishment of the the S1100 type diesel engine body three-dimensional solid model, body three-dimensional finite element model, based on the analysis of finite element modal and strength body strength structural optimization design, and, ultimately, to optimize the the virtual experimental evaluation of program analysis and physical prototype measured . This paper presents a set of geometric model simplifies principle to solve the problem of conversion between the detailed three-dimensional solid model with three-dimensional finite element model; using experimental modal analysis method is fast, effective to verify the correctness of the finite element model; try to use strength design principles lightweight design of the body, and have achieved significant weight loss results. Modern design patterns based on this article: Virtual Design - virtual experiments - the physical prototype, the S1100 diesel engine block strength lightweight design, making the original 18% body weight loss, physical prototype a successful trial, and by the manufacturers 200 hours reliability Experimental. Experimental evaluation show improved body strength and dynamic characteristics are superior to the original design, which confirmed the feasibility and reliability of the design pattern. S1100 type diesel engine body strength lightweight design of the modern design patterns greatly reduce development costs, shorten development cycles, improve product quality, and to solve the problems faced by the field of single-cylinder diesel engine, to be solved, the structural design of China's internal combustion engine the engineering reference value.

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CLC: > Industrial Technology > Energy and Power Engineering > Internal combustion engine > Diesel engine > Theory > Combustion process
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