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Laser Welded Rail ZnNi Coating Adhesive Strength Evaluation
Flieger, Vít ; Skrutek, Ivo (referee) ; Ramík, Pavel (advisor)
The aim of this bachelor thesis is drafting and testing of methods for evaluation of adhesive strength ZnNi coating on laser welded rail. In individual parts is descriped function of common rail system focusing on high pressure tray – rail. Then are described several methods for evaluation of adhesive strength. Theree methods are selected to testing on rail. The experimental part describe the resutls of this tests and modifications for better results. In the last is chosen one method with best results and is complied draft of specification for this method.
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Analysis of Iron-Phosphorus Reaction Products Formation During Heat Treatment Processes
Skoumalová, Zuzana ; Jan, Vít (referee) ; Doležal, Pavel (advisor)
During high pressure pulsation tests repeated cracks of CP3. housings occur. High pressure pump CP3 is part of injection system Common Rail. Cracks can be caused by segregation of phosphorous from a washing medium on grain boundaries during subsequent heat treatment process. The present master´s thesis focuses on analysis of phosphorous compounds on specimen surface made from steel 20MnCr5, which were soaked in solutions with different concentration of phosphorous. Master’s thesis is also focused on potencial influence of phosphorous on structure and properties of this material. The first part of the thesis provides a summary of current knowledge in the studied field, experimental results can be found in the second part. The surface analysis XPS, the light microscopy, the scanning electron microscopy equipped by energy dispersive chemical analysis, the glow discharge optical emission spectroscopy, the methods of the phase analysis by means of the X-ray diffraction and impact test were used.
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A new design and technology of the low-pressure output part
Sláma, David ; Slaný, Martin (referee) ; Píška, Miroslav (advisor)
The aim of this work is make a new design and technology of the low-pressure output part of rail which is made in BOSCH DIESEL s.r.o. company. In the thesis is analyzed in detail the bending test, which is part of the quality control of the low-pressure welding joint. In the next part of the thesis is proposed the process of machining of this component, followed by experimental finding of welding parameters for resistance welding. Then several pieces are welded, which are measured and tested. The results of this tests are compared with customer requirements. Finally, a technical and economic evaluation of the change is made, which will save a considerable amount of money for the company.
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Components Fuel Return Lines (FRL) traceability
Ščerban, Bedřich ; Vichr, Petr (referee) ; Sliwková, Petra (advisor)
The bachelor thesis is devoted to a traceability concept proposal in the Bosch Diesel GmbH Jihlava production of fuel return lines (FRL). During the thesis the construction and manufacturing of FRL is described. An important chapter is the description of the current status of traceability. Based on the findings two strategies are defined. A decision matrix is created to compare both strategies. The conclusion summarizes the results.
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Seal Plugs Design for Common-Rail System Pressure Reservoir High-Cyclic Fatigue Testing
Skrutek, Ivo ; Cupl, Zdeněk (referee) ; Ramík, Pavel (advisor)
Tato diplomová práce je zaměřena na řešení problému praskání těsnících kuželů na tělesech railů při zkoušce dlouhodobé životnosti pomocí pulzního vysokotlakého testu. Hlavní částí je analýza vlivu těsnících zátek na namáhání těsnícího kuželu s následným návrhem nové zátky, která bude tvořit stejné nebo podobné zatížení všech komponent při pulzním testu jako vysokotlaká trubka, která se používá v sériové produkci. Další částí je ověření vlastností nové zátky pomocí vysokotlakého pulzního testu.
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Development of Laser Welded Common Rail with Radial Connected Pressure Sensor (RPS)
Šantavý, Ivo ; Skrutek, Ivo (referee) ; Ramík, Pavel (advisor)
This dissertation deals with a development of a laser welded common rail with a radially attached RPS sensor of pressure. The new concept required by Bosch Diesel s.r.o. Jihlava should be more modifiable and it should be easily integrated with the engine compartment. In this dissertation I suggested a number of concepts that I further analysed, verified in appropriate software, developed, and finally narrowed the selection down to the most suitable solution, which is recommended and justified in the conclusion.
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Components Fuel Return Lines (FRL) traceability
Ščerban, Bedřich ; Vichr, Petr (referee) ; Sliwková, Petra (advisor)
The bachelor thesis is devoted to a traceability concept proposal in the Bosch Diesel GmbH Jihlava production of fuel return lines (FRL). During the thesis the construction and manufacturing of FRL is described. An important chapter is the description of the current status of traceability. Based on the findings two strategies are defined. A decision matrix is created to compare both strategies. The conclusion summarizes the results.
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