Konstrukcija automatskog mjenjača za rad s dvije spojke

master's thesis

• Title (english): Design of the automatic transmission for operation with two clutches
• Author: Tomislav Hren
• Mentor: Ivica Galić (mentor)
• Granter: University of Zagreb; Faculty of Mechanical Engineering and Naval Architecture; Zagreb
• Defense date and country: 2023-12-06, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Mechanical Engineering; General Mechanical Engineering (Construction)

Abstract

U fokusu ovog diplomskog rada stoji razvoj automatskog mjenjača s dvije spojke, specifičnog robotiziranog mjenjača koji koristi odvojene spojke za neparne i parne stupnjeve prijenosa. Funkcionalnost ovog inovativnog sustava temelji se na unaprijed uključenim sinkronizacijama stupnjeva prijenosa, omogućujući promjenu brzina isključivanjem jedne i uključivanjem druge spojke.

U radu se pruža sažet prikaz povijesnog razvoja ovog tipa mjenjača, prateći detaljan opis principa rada automatskog mjenjača s dvije spojke. Naglašava se ključna uloga principa sinkronizacije, koji je istovjetan onom kod manualnih mjenjača.

Za ulazni parametar u proračun uzet je motor s maksimalnim okretnim momentom od 450 Nm te prijenosni omjeri stupnjeva prijenosa prema postojećem mjenjaču.

Prema tim parametrima određeni su osni razmak vratila te moduli i dimenzije zupčanika. Nakon toga provjerena je čvrstoća zupčanika te dimenzioniranje vratila zajedno sa provjerom čvrstoće.
Također su proračunati svi ležajevi mjenjača.

3D model mjenjača te tehnička dokumentacija izrađeni su u programskom paketu Solidworks.

Abstract (english)

The focus of this master's thesis is the design of an automatic transmission with two clutches, This is a robotic transmission that uses two separate clutches for odd and even gear stages. It operates on the principle of pre-engaging synchronizations of transmission stages, and the gear change is achieved by disengaging one clutch and engaging the other.

The paper briefly outlines the history of the development of this type of transmission, provides a detailed description of the operating principles of the dual-clutch automatic transmission, and explains the synchronization principle, which is similar to that of manual transmissions.

The input parameters for calculations include an engine with a maximum torque of 450 Nm and gear ratios according to real gearbox.

Based on these parameters, the shaft center distance and the dimensions of the gears are determined. Subsequently, the gear strength is verified, and the shaft is dimensioned along with a strength check. All gearbox bearings are calculated.

A 3D model of the gearbox and technical documentation were created using the Solidworks software.

• Keywords: Automatski mjenjač; automatski mjenjač s dvije spojke; dvostruka spojka; mjenjač; DCT; DSG.
• Keywords (english): Automatic transmission; dual-clutch automatic transmission; dual clutch; transmission; DCT; DSG
• Language: croatian
• URN:NBN: urn:nbn:hr:235:676703
• Study programme: Title: Mechanical Engineering; Study programme type: university; Study level: graduate; Academic / professional title: magistar/magistra inženjer/inženjerka strojarstva (magistar/magistra inženjer/inženjerka strojarstva)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2023-11-30 14:30:47