liu.seSearch for publications in DiVA
Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • oxford
  • 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
Filter cleaning device: for truck cab climate systems
Linköping University, Department of Management and Engineering, Machine Design.
Linköping University, Department of Management and Engineering, Machine Design.
2018 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

Scania has identified a problem among certain costumers in very dusty environments. The air filters for their truck’s climate system need extensive maintenance, replacement or manual cleaning, because of dust frequently loading up the filters. In this thesis the problem has been analyzed in order to find a solution. The process was initiated by the usage of the black box method, where needed transformations were found, resulting in three needed technical systems. Thereafter, brainstorming was used to find concepts for each technical system. Concepts were compared and ranked against each other. For the most critical of the three systems, the cleaning action, prototypes were built of the four highest ranked concepts. These prototypes were then used to compare the performance between the concepts.

The selected filter cleaning device consists of a method to analyze filter blockage, alert the driver when cleaning is needed and a system to clean the filter for the Scania climate system. The system consists of a pressure sensor used to measuring filter blockage, an air pulse system which cleans the filter and a controller unit to control the cleaning cycle and to inform the driver. The air pulse system has two main parts, a pulse valve and an air tank. The pulse valve is used for releasing the air accumulated in the air tank. The complete system is supplied with 8.5 bar from the internal air pressure system in the truck and a 24 V power supply, also located in the truck.

A suggestion on how a final implementation can be done has been developed, with a minimized number of variants and modifications of parts already in production. A proof of concept was built and mounted in a truck to validate the complete system. Numbers on cleaning performance and sound levels have been produced. The proof of concept manages to remove the restriction created from dust by approximately 50 %.

Aside from developing a suitable filter cleaning device, figures on when the filter needs to be cleaned have been identified. To keep a good working environment within the cab a pressure drop over the filter of 936 Pa is recommended as a point of cleaning. This is to maintain the needed airflow of at least 123 m3/h with two persons seated in the cab to not exceed regulated levels of CO2 within the truck cab.

Place, publisher, year, edition, pages
2018. , p. 151
Keywords [en]
Product development, filter cleaning, trucks, air filter, HVAC
National Category
Applied Mechanics
Identifiers
URN: urn:nbn:se:liu:diva-153638ISRN: LIU-IEI-TEK-A--18/03306—SEOAI: oai:DiVA.org:liu-153638DiVA, id: diva2:1275531
External cooperation
Scania CV AB
Subject / course
Machine Design
Presentation
2018-12-07, Linköping, 08:34 (English)
Supervisors
Examiners
Available from: 2019-01-16 Created: 2019-01-07 Last updated: 2019-01-16Bibliographically approved

Open Access in DiVA

fulltext(11154 kB)76 downloads
File information
File name FULLTEXT01.pdfFile size 11154 kBChecksum SHA-512
36f12fdcdb10628e52b11bc730dd83a1816e1c3316f72c31cf31c455c3866b5fbf5d528569dce8fe17b57026319a30d36e28483da01a2c789fae7f1276d703e6
Type fulltextMimetype application/pdf

Search in DiVA

By author/editor
Andersson, FilipMartinsson, Niklas
By organisation
Machine Design
Applied Mechanics

Search outside of DiVA

GoogleGoogle Scholar
Total: 76 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: 218 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • oxford
  • 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