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Programmable ignition system for spark-ignition engine
Friedel, Daniel ; Kubíček, Michal (referee) ; Tošovský, Petr (advisor)
This thesis is concerned with design of programmable capacitive ignition, powered from board grid. Universality of the system, especially possibility to change values of timing of early spark via changes of programme in microcontroller was taken as major goal. Microcontroller is used as the operative element of ignition. Commonly used methods for sensing of engine speed and managing of ignition are defined and explained at the begining of the thesis. Also is presented realisation of hardware and software part and draw up the methodology calibration of the speed sensor. The ignition is designed to avoid the need to intervene in the high voltage ignition system.
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Methods of ignition spark gaps
Pekárek, Dominik ; Štěpánek, Jaroslav (referee) ; Krbal, Michal (advisor)
This thesis deals with methods of spark gap ignition. The thesis describes spark gap ignition by external electrode, by Rogowski electrode and by lasers. Advantages and disadvantages of these methods are also discussed. In the final part of the thesis there is described experiment with high voltage spark gap.
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Engine Motormanagement Software
Huška, Lukáš ; Kuchyňková, Hana (referee) ; Hájek, Vítězslav (advisor)
This master thesis deals with ignition systems which are used in cars vehicles with gas engines and also with setting of the best moment of ignition of gasoline-air mixture in cylinders of engine. Ways of gas injection at diesel engines and their control systems are also described in this thesis. Next chapter deals with control unit and describes main actions which are necessary for today’s motor vehicles. As illustration is used example of succession of actions which are necessary for calculation and setting regular value of pre-ignition. At the end is shown animation, which can be used for practice lessons in a subject Automobile Electric and Electronic Systems as a example. It will simplify understanding of described activities which are all accomplished by central control unit. For purposes of laboratory lessons is in this thesis also discussed measuring of engine performance with changes of parameter of central control unit.
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Serial and Parallel Diagnostics of Vehicle Engine Control Units
Čoček, Jan ; Svída, David (referee) ; Beran, Martin (advisor)
The thesis considers diagnosis of motor vehicles from the past until the present day, focusing especially on the engine of internal combustion engines. In its sections briefly describes the function of the system and then analyzed how to diagnose faults. The charts are presented symptoms and denouement, using measuring techniques. The conclusion describes the OBD systems, the most commonly used automotive bus and a summary of several major measuring devices used in automotive diagnostics.
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Electronic control units of present SI-engines
Michna, Lukáš ; Beran, Martin (referee) ; Dundálek, Radim (advisor)
Bachelor’s thesis named „Electronic control units of present SI-engines” treats of presently known and extended electronic control systems of SI-engines, so those ones, who mainly control both fuel-air mixture preparing and its ignition in combustion chamber. These are two fundamental functions for engine running, so they are described in light of basic principle of operation and also in light of each kind of these systems and its developmental stage description. Next point is enumeration and description of single parts of electronic control system participating in engine controlling, separated to logic sections. The end of publication makes reader acquainted with most extended types of electronic control systems, their producers and elementary differences.
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CI-engines for Army Purposes
Šebesta, Radek ; Svída, David (referee) ; Dundálek, Radim (advisor)
The bachelor's thesis deals with utilization of compression-ignition engine in army purposes, especially in army vehicles . It aims to motors of military and special vehicles as are armoured vehicles or tanks and gives view of features about motors and exigencies which must fullfils usage in specific conditions. Thesis describes problematics of operating and maintanance CI - engines and negative effects which appear in battle contidionts. It gives notice about curing methods each parts of engine and about systems which supports engine working and classifies exemplifications of differences distinct from ordinary motors, common uses in civil cars. Creates view on problematics of positioning and constructional solution of motor space inside vehicle. It brings basic informations about oil fuels used in army and its requierements. Objective of this thesis is disclosure of information about specific features and standards of motors intended for army purposes.
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Multi-point Injection
Slavík, Tomáš ; Svída, David (referee) ; Dundálek, Radim (advisor)
The main objective of this Bachelor degree thesis is to describe and to bring closer the function of the multiple fuel injection system (nebo the function of fuel injections with multiple sets) in spark-ignition combustion engines, as well as to create a summary of individual components in fuel injection frameworks together with describing their functions and comparing them with other alternatives in fuel systems. In the conclusion, an elaboration on development trends in combustion engines will be provided.
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Look into possibility and propose eventually adjustments of combustion engine for hybrid propulsion Biogas and Woodgas
VONDRUŠKA, Michal
Bachelor´s work on the theme ?Look into possibility and propose eventually adjustments of combustion engine for hybrid propulsion Biogas and Woodgas? is contributed to three parts. First part is concerned by methods principals and chemicals process of genesis Biogas and Woodgas and also their features and composition. The second part of work is concerned by selection of suitable combustion engine for hybrid propulsion and necessary adjustments of engine for purpose of guarantee of function. Component of work are also adjustments of Biogas and Woodgas that they are necessary for satisfy ecological criterion for combustion engines and simply economical calculation for purpose state of economical aspect using of combustion engine for hybrid propulsion. The Result of work is estimation of options of using combustion engine for hybrid propulsion of Biogas and Woodgas.
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Electronic Control Unit for Engines and its Diagnostics
ČERVENKA, Petr
This paper summarizes information to be used to gain background knowledge related to the control systems of the spark-ignition combustion engines of cars and their diagnostics. The essentials part of this paper includes the explanation of the principles of each part of the systems. Next part includes explanation of the serial and parallel diagnostics including examples of diagnostics measurements. Last part this paper is engaged in the measuring technology.
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