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Utveckling av HCCI Motorn: - konceptutveckling av en spolpump
KTH, School of Industrial Engineering and Management (ITM), Machine Design (Dept.), Machine Design (Div.).
2010 (Swedish)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesisAlternative title
Development of the HCCI Engine : - concept generation of a scavenge pump (English)
Abstract [sv]

Med HCCI motorn sker förbränning på två olika sätt. Dels har den en Otto förbränning som en vanlig bensinmotor med tändstift och dels har den kompressionsantändning av bränslet som i en Diesel. Dessa två förbränningssätt kräver olika förhållanden på bränsle/luft blandningen. För att lösa detta har en variabel luftpump utvecklats.Utvecklingen skedde med hjälp an systematisk produktutveckling där ett funktions/medel träd användes för att ta fram olika koncept. Fem olika kompressortyper jämfördes och flera olika sätt att driva pumpen samt att reglera luftflödet. Ur detta vart en vingpump med variabelt deplacement och direktstyrning vald.Med ett teoretiskt deplacement på mellan 33 kubikcentimeter per varv till 72 kubikcentimeter per varv ger det en leveransgrad till motorn på 87 % till 189 %.

Abstract [en]

The HCCI engine has two modes of running; one is Otto mode which is like an ordinary combustion engine the other mode is the HCCI mode where the compression ignites the fuel mixture. These two modes need different air to fuel ratios. To accommodate this, a variable displacement scavenge pump have been developed.For the development of the scavenge pump different concept were generated with the help of a function/means tree. Five different types of compressors were compared and several different ways of driving the compressor and adjusting the airflow. A sliding vane compressor driven by direct connection to the engine and with variable compression was chosen as the final concept.With a theoretical variable displacement of from 33 cubic centimeters per revolution to 72 cubic centimeters per revolution it gives a delivery ratio between 87 % and 189 %.

Place, publisher, year, edition, pages
2010. , 51 p.
Series
MMK 2010:01 MKN 030
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:kth:diva-41528OAI: oai:DiVA.org:kth-41528DiVA: diva2:444440
Uppsok
Technology
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Examiners
Available from: 2011-11-28 Created: 2011-09-29 Last updated: 2011-11-28Bibliographically approved

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Development of the HCCI Engine(2875 kB)414 downloads
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CiteExportLink to record
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Citation style
  • apa
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