Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Dämpning av ljud i Shift-by-Wire växelväljare: Noise damping in a Shift-by-Wire gear shifter
Jönköping University, School of Engineering, JTH, Mechanical Engineering.
Jönköping University, School of Engineering, JTH, Mechanical Engineering.
2015 (Swedish)Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
Abstract [en]

Constantly growing demands from the costumers in the Automotive industry forces the subcontractors to seek alternative ways to compete. One parameter of quality is the components tolerance against NVH(Noise, Vibraion & Harshness) aspects. Kongsbergs Automotive has developed a new gear shifter platform (Shift-by-Wire) that is sold to Alfa Romeo and used in of their car models. However, the company is not pleased with the components sound quality, therefore the main purpose of this thesis is to develope a number of concepts that is supposed to enhance these NVH-aspects.

To get an understanding of the problem an analysis of the causes of the emitted sound has been done parallell to a product decomposition, function decomposition and a Ishikawa-diagram. Together with these methods has a litterature study been performed to get familiar with the physics of an impact and especially the emittment of noise. The concepts has been generated through a combined brainstorming and brainwriting session. A number of concepts has been developed that should reduce emitted noise. To evaluate the concepts generated has well proven methods for screening been used, such as: analysis of pros and cons, feasibility analyis and Go/No-Go.

The definite concept uses a method that absorbs the kinetic energy induced by the user through a built-on component and an energy absorbing foam. The idéa is that the built-on component and the foam should transform more of the kinetic energy to heat energy.

The consequenses of this study is that the company now has a fully applicable concept to evaluate the idés effectiveness regarding reduction of noise. Next step is to make a prototype and evaluate the idéa.

Since the making of a prototype has not been done, the biggest restriction in the thesis  is that the developed concept is not evaluated regarding its effectiveness of reduction of noise.

Place, publisher, year, edition, pages
2015. , 51 p.
Keyword [sv]
Växelväljare, Shift-By-Wire, Oljud, Noise, Vibration & Harshness, Orsaksanalys, Kongsberg Automotive, Konceptgenerering
National Category
Mechanical Engineering Applied Mechanics
Identifiers
URN: urn:nbn:se:hj:diva-27389ISRN: JU-JTH-MTA-1-20150016OAI: oai:DiVA.org:hj-27389DiVA: diva2:824933
External cooperation
Kongsberg Automotive AB
Subject / course
JTH, Mechanical Engineering
Supervisors
Examiners
Available from: 2015-06-25 Created: 2015-06-22 Last updated: 2015-06-25Bibliographically approved

Open Access in DiVA

fulltext(1975 kB)159 downloads
File information
File name FULLTEXT01.pdfFile size 1975 kBChecksum SHA-512
ea7bba10d80212174f349549cfd411255a96b2092aa0ee552f8e0d946a71332e3d5bcb97a96c995552f29df0ebfe82e6c35e7b1b5bf47db1127cd2e2aee51e31
Type fulltextMimetype application/pdf

By organisation
JTH, Mechanical Engineering
Mechanical EngineeringApplied Mechanics

Search outside of DiVA

GoogleGoogle Scholar
Total: 159 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

urn-nbn

Altmetric score

urn-nbn
Total: 150 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf