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Partially premixed combustion with low octane fuel aims to reduce NOx and soot emission simultaneously without fuel consumption penalty. Cylinder pressure based combustion phase control is an essential technology for partially premixed combustion. A novel closed-loop combustion phase control strategy for multiple combustion modes is proposed in the current study. The combustion modes are classifie

Active pre-chamber configurations are considered a valuable solution for improving the operation of the internal combustion engine, in the view to overcome the many challenges it has been made to face. Combining this technology with the use of natural gas, a fuel that has increasing availability and interest in the market share, it is possible to burn ultra-lean mixtures (with air-to-fuel ratios,

This thesis investigates the media discourse of the Swedish party Feminist Initiative in conjunction with the election to the European Parliament, and the general national election, in May and September 2014. Through the methods of narrative analysis and critical discourse analysis, it identifies the dominating media approaches and attitudes towards the party, and analyses what norms and structure

This article’s aim is to investigate the creative use of parody and sense-/nonsense-making visible in the Swedish football scene by looking into football chants through the lens of parody. The three examples selected (a song, a chant, and a music video) give a glimpse of possible folkloristic investigations in that context, as possibilities to work on varied and extensive material are profound. Th

In the study presented in this paper a single-cylinder Scania D12 diesel engine has been converted to work as a pneumatic hybrid. During pneumatic hybrid operation the engine can be used as a 2-stroke compressor for generation of compressed air during vehicle deceleration and during vehicle acceleration the engine can be operated as an air-motor driven by the previously stored pressurized air.The

Forskare, från Piaget till Huizinga, MacCannell, Turner, Betcher, Suits, Aarseth, Castronova, Boellstorff, Caillois och Sutton-Smith, för att nämna endast några få, har i decennier och med olika disciplinära angreppssätt försökt förstå sig på lek och spel. “Play” – är ett högst tvetydigt begrepp så brett och metaforiskt att det motstår alla försök att inlemma det under en och samma paraplyteori. P

Partially premixed combustion aims to reduce NOx and particulate matter emission without fuel consumption penalty. Low temperature reactions are important for the partially premixed combustion. In the current study, a self-adaptive strategy is introduced to predict the motoring pressure by means of an equivalent isentropic index. The start of the low temperature reactions is detected when the pres

This paper examines how organizations for Boy Scouts and Girl Scouts in Sweden dealt with domestic and parental issues, from the movement’s inception in 1910 to 1960. The perspective is twofold. First, it discusses how ideals and expectations concerning participation in domestic matters differed for boys and girls. Were these gender roles stable or changeable? Secondly, it brings to light how pare

HCCI (Homogeneous Charge Compression Ignition) is a very control-intensive combustion concept which has been studied for over a decade because of its favorable combination of high efficiency and low emissions. Various optimal control methods have been applied to HCCI and this chapter gives an overview of them. Optimal control of HCCI can be divided into model based and non-model based where MPC is

Partially premixed combustion is a compression ignited combustion strategy where high exhaust gas recirculation (EGR) levels in combination with early or late injection timing result in a prolonged ignition delay yielding a more premixed charge than with conventional diesel combustion. With this concept it is possible to get low smoke and NOx emissions simultaneously. Accurate control of injection

Previous research carried out by the authors described the role of dual-fuel combustion efficiency on overall engine efficiency at high diesel substitution ratio. At low loads, high diesel substitution ratios result in excessive total unburned hydrocarbon emissions due to bulk flame quenching, and consequently lower substitution ratios in combination with intake air heating, throttling and increas