Dog Clutch Without Angular Backlash

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F23%3A00369527" target="_blank" >RIV/68407700:21220/23:00369527 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Dog Clutch Without Angular Backlash

Popis výsledku v původním jazyce

Dog clutches are simple and inexpensive mechanisms for shifting gears. However, their usage in automotive gearboxes was limited due to angular backlash in the engaged state and the resulting discomfort. Based on a thorough research of existing solutions, a new and unique design of a dog clutch without angular backlash was developed and later patented. The angular backlash is minimized due to the purely mechanical blocking mechanism. The new dog clutch is interchangeable with conventional gearshift mechanisms without additional modifications and requires an external synchronization system. The design of the new dog clutch with blocking mechanism is described in detail with a focus on the innovative parts – gearshift dogs and the blocking mechanism. Adaptation for sequential shifting was carried out and the clutch was complemented by a design and simulation program. Two prototypes of the clutch were manufactured in cooperation with an industrial partner and verified on the test bench inside a gearbox. These prototypes were tested for functionality, service life, and comfort during gearshift. The test bench had to be significantly modified and updated to make these tests possible. The verification was judged successful. The dog clutch with blocking mechanism is suitable for shifting gears in automotive gearboxes, in particular of hybrid and electric vehicles equipped with electric motor. It is able to eliminate some shortcomings of conventional dog clutches, as described in the research part.

Název v anglickém jazyce

Dog Clutch Without Angular Backlash

Popis výsledku anglicky

Dog clutches are simple and inexpensive mechanisms for shifting gears. However, their usage in automotive gearboxes was limited due to angular backlash in the engaged state and the resulting discomfort. Based on a thorough research of existing solutions, a new and unique design of a dog clutch without angular backlash was developed and later patented. The angular backlash is minimized due to the purely mechanical blocking mechanism. The new dog clutch is interchangeable with conventional gearshift mechanisms without additional modifications and requires an external synchronization system. The design of the new dog clutch with blocking mechanism is described in detail with a focus on the innovative parts – gearshift dogs and the blocking mechanism. Adaptation for sequential shifting was carried out and the clutch was complemented by a design and simulation program. Two prototypes of the clutch were manufactured in cooperation with an industrial partner and verified on the test bench inside a gearbox. These prototypes were tested for functionality, service life, and comfort during gearshift. The test bench had to be significantly modified and updated to make these tests possible. The verification was judged successful. The dog clutch with blocking mechanism is suitable for shifting gears in automotive gearboxes, in particular of hybrid and electric vehicles equipped with electric motor. It is able to eliminate some shortcomings of conventional dog clutches, as described in the research part.

Druh

O - Ostatní výsledky

CEP obor

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OECD FORD obor

20301 - Mechanical engineering

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2023

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů