Sökning: "Multiple Injection"

Visar resultat 1 - 5 av 133 avhandlingar innehållade orden Multiple Injection.

1. 1. Injection Strategies for Heavy Duty DI Diesel Engines

   Författare :Tanja Rente; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; multiple injections; injection pressure; local heat transfer; diesel combustion; injection duration; orifice number; injection strategies;

   Sammanfattning : Diesel engines enjoy widespread popularity in transportation and industrial systems. The reasons for this popularity are their simplicity, relatively low capital costs, durability and high fuel efficiency. LÄS MER

3. 2. Spray combustion with multiple-injection in modern engine conditions

   Författare :Ahmad Hadadpour; Strömningsteknik; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Spray combustion; Multiple-injection; Internal combustion engine; LES; FGM; ESF;

   Sammanfattning : Combustion of fuel in diesel engines emits substances harmful to the environment such as soot. These emissions can be reduced by either in-cylinder treatments or after-treatments. One of the common in-cylinder treatments is multiple-injection, which divides a single fuel injection to multiple smaller injections. LÄS MER

4. 3. Multiple-Bit Errors in Computer Systems

   Författare :Rolf Johansson; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; fault sim ulation; fault tolerance; single event upsets; error-correcting codes; multiple-bit errors; transient faults; fault modelling; physical fault injection;

   Sammanfattning : This thesis discusses the types of transient faults caused by heavy-ion or a-particle radiation that manifest as multiple-bit errors and how information redundancy techniques can achieve fault tolerance with respect to some classes of multiple-bit errors. The first part of the thesis considers the fault modelling problem, beginning with the problem of how single event upsets (SEUs) originating from faults in register cells in microprocessors manifest as primary errors. LÄS MER

5. 4. Injection and Combustion of Alternative Fuels in Spark Ignited Direct Injection Engines

   Författare :Lars Christian Riis Johansen; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; gas fuel; direct injection; E85; stratified combustion; spark ignition; alternative fuels; optical measurements;

   Sammanfattning : Increasingly stringent vehicle emission legislation necessitates increasingly efficient combustion engines. The use of direct injection in spark ignited engines improves engine efficiency and reduces CO2 emissions. LÄS MER

7. 5. Reducing injection pain in children and adolescents with type 1 diabetes : Studies on indwelling catheters and injection needles

   Författare :Ragnar Hanås; Johnny Ludvigsson; Thomas Danne; Linköpings universitet; []
   Nyckelord :MEDICINE; MEDICIN;

   Sammanfattning : Insulin injections can be painful for many children, especially when using multiple daily injections. To reduce this procedural pain we in 1985 designed ao indwelling catheter for subcutaneous use when injecting insulin. This catheter has been well accepted by our patients. LÄS MER