Sökning: "VVT"
Visar resultat 1 - 5 av 6 uppsatser innehållade ordet VVT.
1. Model-Predictive Control of Gas Exchange in a Gasoline Engine
Master-uppsats, Linköpings universitet/FordonssystemSammanfattning : The process to induct air into engine cylinders, via the air inlet system and cylin-der port valves, is referred to as the "gas-exchange". Control is achieved by theturbo-charger, the intake throttle plate and the variable valve timing (VVT) sys-tem. These actuation systems traditionally use separate control with indepen-dent SISO feedback. LÄS MER
2. Full Cycle Cylinder State Estimation in DI Engines with VVA
Master-uppsats, Linköpings universitet/FordonssystemSammanfattning : Tougher legal demands on pollutions require a better developed understanding of the processes that take place in the cylinder. The thesis contributes with a cylinder model that uses the same set of equations for intake, compression,expansion/combustion and exhaust. LÄS MER
3. Estimation of Engine Gas Temperatures During Pressure Transients
Master-uppsats, Linköpings universitet/FordonssystemSammanfattning : Coming stringent regulatory emissions requirements with Real Driving Emissions testing amplifies the need for efficient engine control at all driving scenarios. This thesis has investigated the air-flow transients that appears when changing the throttle position very fast, such as at a stop sign. LÄS MER
4. An Alternative Variable Valve Timing System for Heavy Duty Vehicles
Uppsats för yrkesexamina på avancerad nivå, Luleå tekniska universitet/Institutionen för teknikvetenskap och matematikSammanfattning : The ability to control engine valve timing has the potential to alter the engine performance over the entire operating range. The outcome of valve timing technology enables the possibility to increase efficiency, lowering emissions, increase engine torque, etc. One of the simplest ways to obtain a variable valve timing is to use cam phasers. LÄS MER
5. Hardware-in-the-Loop simulering av motorservon på ett inbyggt system
Master-uppsats, KTH/Maskinkonstruktion (Inst.)Sammanfattning : This report presents a master thesis project performed at Elekta AB during the fall of 2013 and early 2014. Elekta is a medical technology company and their main product in the Stockholm office is a gamma knife used for radiosurgery. LÄS MER