Dog Clutch Without Circular Backlash

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F18%3A00324777" target="_blank" >RIV/68407700:21220/18:00324777 - isvavai.cz</a>

Výsledek na webu

<a href="https://saemobilus.sae.org/content/2018-01-1299" target="_blank" >https://saemobilus.sae.org/content/2018-01-1299</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.4271/2018-01-1299" target="_blank" >10.4271/2018-01-1299</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Dog Clutch Without Circular Backlash

Popis výsledku v původním jazyce

The paper is dedicated to design of a new dog-clutch gearshift mechanism for passenger car gearboxes with external synchronization. There are two main targets of presented work: 1. Replace the standard synchronizer with cheap and compact shift device, which will keep the internal architecture of classical manual transmission. 2. Keep all the other important functions of synchronizer: a. minimal circular backlash to avoid clash during change of sense of the torque flow, b. prevent unwanted disengagement, c. guarantee the shift anytime, d. determine neutral position (preferably). Czech Technical University in Prague is for several years active in the field of design and testing of shift mechanisms, as well as in design of new shift clutches. The currently presented clutch is 3rd generation of inventions of dog clutch systems. All clutches were fabricated as prototype and tested. All designs will be briefly described in the paper. To observe the real life function the prototype was assembled into the passenger car gearbox between the IIIrd and IVth speed. The transmission was equipped with external synchronization device. With help of external synchronization device the different relative speeds between the free rotating wheel and shaft can be preset. The impact of speed difference on shift smoothness can be evaluated with help of vibration measurement. The results were compared with the same gearbox equipped with classical synchronizer. The currently presented clutch minimizes the number of pieces, shortens the length, and lowers the weight and costs of shift clutch with respect to the standard synchronizer.

Název v anglickém jazyce

Dog Clutch Without Circular Backlash

Popis výsledku anglicky

The paper is dedicated to design of a new dog-clutch gearshift mechanism for passenger car gearboxes with external synchronization. There are two main targets of presented work: 1. Replace the standard synchronizer with cheap and compact shift device, which will keep the internal architecture of classical manual transmission. 2. Keep all the other important functions of synchronizer: a. minimal circular backlash to avoid clash during change of sense of the torque flow, b. prevent unwanted disengagement, c. guarantee the shift anytime, d. determine neutral position (preferably). Czech Technical University in Prague is for several years active in the field of design and testing of shift mechanisms, as well as in design of new shift clutches. The currently presented clutch is 3rd generation of inventions of dog clutch systems. All clutches were fabricated as prototype and tested. All designs will be briefly described in the paper. To observe the real life function the prototype was assembled into the passenger car gearbox between the IIIrd and IVth speed. The transmission was equipped with external synchronization device. With help of external synchronization device the different relative speeds between the free rotating wheel and shaft can be preset. The impact of speed difference on shift smoothness can be evaluated with help of vibration measurement. The results were compared with the same gearbox equipped with classical synchronizer. The currently presented clutch minimizes the number of pieces, shortens the length, and lowers the weight and costs of shift clutch with respect to the standard synchronizer.

Druh

D - Stať ve sborníku

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

2018

Kód důvěrnosti údajů

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

Název statě ve sborníku

SAE Technical Papers

ISBN

—

ISSN

0148-7191

e-ISSN

0148-7191

Počet stran výsledku

9

Strana od-do

—

Název nakladatele

SAE International

Místo vydání

Warrendale, PA

Místo konání akce

Detroit

Datum konání akce

10. 4. 2018

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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