Diploma. Composite piston for highly accelerated diesel tank.

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Uploaded: 24.04.2007
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Description

Diploma. Composite piston for highly accelerated diesel tank. Full graphic material.

Contents:
Abstract
Contents 3
Introduction 7
1. piston group 10
1.1 Design features 11 pistons
1.2 Terms and conditions of the piston 20
1.2.1 Temperature of the piston 20
1.2.2 Tensions 25
1.2.3 Methods and tools for the experimental investigation of the stress-strain state. 28
1.3 Requirements to the material of the pistons 31
1.4 Problems arising from the operation of the piston 34
1.5 Matarialy used for the manufacture of pistons 36
1.5.1. Aluminium alloys 36
1.5.2. Iron 39
1.5.3. Steel 39
1.5.4. Ceramic materials 40
1.6 Structural measures aimed at reducing the thermal and mechanical stresses of the pistons 43
1.6.1 Cooling of pistons 43
1.6.2 Pistons controlled thermal expansion of 44
1.6.3 Strengthening of the ring belt, the combustion chamber and piston crown 46
1.6.4 Strengthening bosses and the piston skirt 49
1.6.5 Composite pistons 54
1.6.6 Conclusion 56
2. Calculation of high performance engine 58
2.1 Characteristics of the engine 58
2.2 Thermal design revving engine 59
2.2.1 Calculation of the basic processes of cycle 59
2.2.2 Determination of the engine 66
2.3 Dynamic analysis revving engine 69
2.3.1 Kinematics of piston 69
2.3.2 Determination of forces acting in the crank 71
3. Calculation of the composite piston head 75
3.1 The choice of material of the piston 75
3.2 Justification of the choice of structural elements of the piston 76
3.2.1 The combustion chamber 76
3.2.2 The bosses of the piston 77
3.2.3 The piston skirt 77
3.3 calculation of thermal and stress-strain state of the piston head 78
3.4 Results of the study 84
3.4.1 Definition of the temperature 84
3.4.2 Calculation of the piston head 85 TNDS
3.5 Conclusions 91
4. Calculation of the economic efficiency of the planned engine 96
4.1 General 98
4.1.1 The content of work 98
4.1.2 The relevance of the degree of novelty 98
4.1.3 Classification of works 98
4.1.4 The concept of economic efficiency of R & D 99
4.2 Analytical part 100
4.2.1 Organization of the preparation and conduct of R & D 100
4.2.2 The content of the economic effect of R & D 100
4.2.3 Methods for calculating the costs of R & D 101
4.3 Calculation of the 102
4.4 Technical and economic evaluation of R & D 103
4.5 Calculation of the expected economic benefits from the implementation of the results of R & D 104
4.5.1 Selection of baseline conditions and compatibility options 104
4.5.2 Calculation of capital investments 105
4.5.3 Calculation of operating costs 107
4.5.4 Calculation of the expected economic benefits from the use of electronic computing complexes 110
4.5.5 Conclusions 111
5. The technological process of machining the piston skirt 112
5.1 service appointments piston 112
5.2 Selecting the type of workpiece 113
5.3 Development of the route process workpiece 113
5.4 Calculation and determination of allowances and tolerances for machining 115
5.5 Calculation of cutting modes 117
5.6 Conclusions 119
6. Safety of workers in the machining of the piston 120
6.1 Introduction 120
6.2 Safety of the workers in the machining of the piston 121
6.3 Electrical 123
6.4 Fire prevention 124
6.5 Provide the required parameters of the air of the working area 125
6.6 Protection against noise and vibration. 127
6.7 Lighting 128
6.8 Calculation of the 130
6.8.1 The purpose and objectives of local ventilation 130
6.8.2 Calculation of local ventilation machine tools 131 6.8.3 Calculation of the necessary air 132
6.8.4 Determination of transport rate 134
6.8.5 Determination of the pipe section 135
6.8.6 Selecting dustproof struzhkopriemnikov and pipelines 136
6.8.7 Selecting struzhkootdelitelya 137
6.8.8 Calculation of the capacity of the hopper 13

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