Bachelor's degree. Project V-shaped four-cylinder engine. 178 pages + full graphics ma

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Uploaded: 07.04.2007
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Introduction 4
Baseline 5
1. Justification of the sketch and layout engine 8
1.1 Purpose of the engine, the general scheme and the drive timing 8
1.2 Operating procedure of cylinders, the scheme of the crankshaft, the uniformity of alternating cycles 10
1.3 Analysis of the balance 12
1.4 Material of the main parts 24
1.5 Description of the engine and its systems 25
2 Thermal design workflow 30
2.1 Initial data for the calculation of heat 30
2.2 Calculation of the basic processes of cycle 31
2.3 Determination of the effective performance of the engine and indicator 39
2.4 Construction of the indicator chart 42
3. The kinematic and dynamic analysis 44
3.1 Determination of forces acting in the crank 44
3.2 Determination of loads on the crank pin and connecting rod bearing 64
3.3 Determination of loads on the crank journal and crank bearing 69
3.4 shows the relative deterioration of necks and bearing 78
3.5 The incoming torque 85
4. The choice of design and calculation of the strength of the main parts of the engine 89
4.1 Working conditions, nature and location of the actual application loads, especially interaction with mating parts 89
4.2 Features of the choice of material, heat treatment, methods of hardening of 89
4.3 Calculation of the strength of the piston 90
4.4 Calculation of the strength of the piston connecting rod 94
5. Engine Timing 100
5.1 Construction site installation of valves 100
5.2 Determination of the mutual arrangement of the intake and exhaust cams for single cylinder 101
5.3 Calculation caliber conical chamfer intake and exhaust valves 102
5.4 Determination of mass parts 103
5.5 Analysis of the size of chains 107
5.6 Selection and calculation of the valve springs 110
5.7 Determination of the forces acting on the details of the timing 120
6 The calculation of the speed sensor 123
6.1 Baseline 123
6.2 Determination of nominal power and supports the definition of the mass of goods 123
6.3 Construction of high-speed and static characteristics of the supporting force 124
6.4 Determination of the stiffness of the spring 127
6.5 Calculation of the spring. Development of a drawing of the spring 128
7 Gas-dynamic calculation of the turbocharger 134
7.1 compressor stage 134
7.2 turbine stage 146
8 Full trim engine 154
8.1 Balancing moments from the forces of inertia of the rotating masses 154
8.2 Balancing moments of inertial forces of the first order PDM 162
8.3 Balancing moments from the forces of inertia of the second order PDM 170
8.4 Balancing the forces of inertia of the second order PDM 172
Conclusion 177
References 178

Graphic part of the project

Sheet 1 A cross section of the engine.
Sheet 2 The results of thermal calculation, kinematic and dynamic analysis.
Sheet 3 Results loads on the cervix and the bearings, as well as results for wear.
Sheet 4 the valve assembly, the dimensional chain kinematic characteristics of the cam profile, the diagram of the forces acting on the parts MGR, analysis of the piston from colliding with the valve.
Page 5 Blueprint parts designed for durability.
Sheet 6 balancing schemes.
Sheet 7 counterweight mechanism


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