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National Repository of Grey Literature 1 records found  Search took 0.01 seconds. 
Valve controls and their timing
 Vajčner, Patrik ; Pexa, Martin (advisor) ; Kotek, Tomáš (referee)
Abstract: Comparison of different types of valve operating mechanisms is the main aim of the Bachelor thesis. This was done from the point of view of the construction manufacturing, with regard to the engine performance, user´s comfort and fuel consumption of a vehicle. There were two types of valve operating mechanisms chosen for the purpose of the Thesis. The first one is a typical classic system whereas the second one is a modern type with a possibility of timing, which allows different timing for valves opening and closing. This process is dependent on the current requirement of engine output. Achievement of the optimal engine output for every specific type of ride is not the main purpose of the correct timing of valves and engine run adjustment in a vehicle. It also allows for a reduction of the excessive engine load and gradual wearing of each part of the system. Of course another very significant reason is to lower the fuel consumption as much as possible with regard to reduction of harmful, environmental unfriendly gases and emissions.
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