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Design of Oil Pump for T158 Transfer Case
Gášek, Martin ; Jakubec, Josef (referee) ; Dvořáček, Jiří (advisor)
This master’s thesis deals with a new design of an oil pump for Tatra T158 transfer case. The new solution should replace earlier involute internal gear pump which is not able to provide sufficent lubrication. The main problem of the old design is a poor suction at low speeds of the vehicle. Gerotor type of the pump has been chosen. Its main advantages are a convenient specific flow rate and good volumetric efficency. In an analytic calculation of the pump gearing also important functional parameters have been checked, like a pressure angle, flow rate, flow irregularity, specific flow rate, specific slipping. A design with and without axial clearance compensation is introduced. Measurements on a test rig confirmed good suction ability even in low revs. Generated flow rate and pressure are improved. That is a good prerequisite for faster assembly of transfer case with no testing of each oil pump. The tests have not revealed any unexpected wear of parts of the pump so far. It is supposed an application of the new gerotor design in a serial production of T158 truck and other types in the future.
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Car differentials
Čapek, Štěpán ; Ramík, Pavel (referee) ; Kaplan, Zdeněk (advisor)
Technical solutions of car differentials. Description of the vehicle transmission system and types of differentials with their evaluation. Following active systems and active differentials with explanation of their function and summary of advantages and disadvantages of their application and use by individual car manufacturers.
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Cars with All Wheel Drive
Stiborová, Dana ; Kučera, Pavel (referee) ; Píštěk, Václav (advisor)
The aim of this retrieval thesis is a description of the modern concepts of all-wheel drive used in passenger cars. The initial part is devoted to the historical development of this drive and its advantages and disadvantages. The following section describes the basic components and their use in individual concepts. Further, this work focuses on detailed description of the various drive systems used by leading automobile manufacturers and it is ended with a re-flection on the possible direction of further development of the automotive industry.
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Car differentials
Čapek, Štěpán ; Ramík, Pavel (referee) ; Kaplan, Zdeněk (advisor)
Technical solutions of car differentials. Description of the vehicle transmission system and types of differentials with their evaluation. Following active systems and active differentials with explanation of their function and summary of advantages and disadvantages of their application and use by individual car manufacturers.
|
|
|
Design of Oil Pump for T158 Transfer Case
Gášek, Martin ; Jakubec, Josef (referee) ; Dvořáček, Jiří (advisor)
This master’s thesis deals with a new design of an oil pump for Tatra T158 transfer case. The new solution should replace earlier involute internal gear pump which is not able to provide sufficent lubrication. The main problem of the old design is a poor suction at low speeds of the vehicle. Gerotor type of the pump has been chosen. Its main advantages are a convenient specific flow rate and good volumetric efficency. In an analytic calculation of the pump gearing also important functional parameters have been checked, like a pressure angle, flow rate, flow irregularity, specific flow rate, specific slipping. A design with and without axial clearance compensation is introduced. Measurements on a test rig confirmed good suction ability even in low revs. Generated flow rate and pressure are improved. That is a good prerequisite for faster assembly of transfer case with no testing of each oil pump. The tests have not revealed any unexpected wear of parts of the pump so far. It is supposed an application of the new gerotor design in a serial production of T158 truck and other types in the future.
|
|
|
Cars with All Wheel Drive
Stiborová, Dana ; Kučera, Pavel (referee) ; Píštěk, Václav (advisor)
The aim of this retrieval thesis is a description of the modern concepts of all-wheel drive used in passenger cars. The initial part is devoted to the historical development of this drive and its advantages and disadvantages. The following section describes the basic components and their use in individual concepts. Further, this work focuses on detailed description of the various drive systems used by leading automobile manufacturers and it is ended with a re-flection on the possible direction of further development of the automotive industry.
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