An investigation of the need of engine model complexity for use in powertrain control applications is presented in this paper. The engine studied is an SI-engine, but the analysis methods could easily be adapted to a CI-engine. The different engine models investigated are a cylinder-by-cylinder engine model and a mean value engine model. The way to evaluate the engine models is to compare the d...

OBJECTIVE To assess differences between the risk of injury for motorcycle riders before and after the passing of a law allowing licenced car drivers to drive light motorcycles without having to take a special motorcycle driving test. METHODS We carried out a quasi-experimental study involving comparison groups, and a time-series analysis from 1 January 2002 to 30 April 2008. The study group w...

W artykule punktem wyj?cia uczyniono pytanie o to, jakie trwa?e i ponadczasowe elementy zawiera w sobie spu?cizna malarza pisarza – Józefa Czapskiego. Ukazane zosta?y przyk?ady nawi?zywania, czyli „powrotów” do biografii twórczo?ci artysty ostatnich latach. My?l? przewodni? artyku?u jest wskazywanie na zainteresowanie Czapskiego ró?nymi aspektami duchowo?ci. Duchowo?? bowiem uznawa? on za funda...

Viscosity of vegetable oil is considered a constraint for its use as an alternate fuel for Internal Combustion(IC) engines. In this experimental investigation, the viscosity of cottonseed oil (CSO), which is considered a potential alternate fuel, is reduced by blending it in different proportions with diesel, and its viscosity at various temperatures was analyzed and used as a fuel in a compres...

NOx is one of the major toxic emissions that needs to be regulated stringently in both EU and USA emission regulations. The engine designer is keen to get an accurate, reliable and cost effective NOx measurement system. In this paper, the application of the cylinder pressure for predicting the NOx emission of compression ignition (CI) engine fuelled with diesel and biodiesel during steady state...