Essays about: "Valves"

Showing result 26 - 30 of 164 essays containing the word Valves.

1. 26. Development and testing of controller that introduces the functionality to lift the second front axle on a heavy vehicle

   University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)

   Author : Mattias Vikgren; [2021]
   Keywords : PI control; Bang-bang control; Simulation; Suspensions; Pneumatic actuators.; PI regulator; Bang-bang regulator; Simulering; hjulupphängningar; Pneumatiska ställdon.;

   Abstract : The transition to more environmentally sustainable transports, as well as rising fuel prices create a demand for efficient means of transportation. Liftable axles have shown potential to save fuel and reduces tire wear on heavy vehicles. READ MORE

3. 27. CO2 Refrigeration withIntegrated Ejectors : Modelling and Field Data Analysis ofTwo Ice Rinks and Two Supermarket Systems

   University essay from KTH/Skolan för industriell teknik och management (ITM)

   Author : SIMON FEHLING; [2021]
   Keywords : Vapor Ejector; Liquid Ejector; Field Data Evaluation; Modelling; Refrigeration; CO2; Ice Rink; Supermarket; Heat Recovery; Ångejektor; Vätskeejektor; Fältmätdata; Modellering; Kylteknik; CO2; Isbana; Livsmedelsbutik; Värmeåtervinning;

   Abstract : With the increasing importance of CO2 as natural refrigerant with low Global Warming Potential(GWP) ejectors have been used in a number of recent installations to recover expansion work atthe high operating pressures of these systems. In colder climates, this is particularly seen in combinationwith heat recovery due to the high compressor discharge pressures. READ MORE

4. 28. Modelling and improvement of 2-Speed Smoothing System

   University essay from Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

   Author : Oskar Nilsson; [2021]
   Keywords : Simulink; Skid-steer; Hydraulics;

   Abstract : A skid steer loader is a machine used in construction for multiple tasks. Its small size and versatility makesit a use-full addition to any work site. The machine is driven by a combustion engine that in turn powers ahydraulic pump. This hydraulic fluid from the pump is then directed to either motor to propel the vehicle. READ MORE

5. 29. Model-Predictive Control of Gas Exchange in a Gasoline Engine

   University essay from Linköpings universitet/Fordonssystem

   Author : George Jajji; [2021]
   Keywords : Control Engineering; Model Predictive Control; MPC; Gasoline Engine; Gas Exchange;

   Abstract : 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. READ MORE

6. 30. Active Control of High­-Speed Flexible Rotors on Controllable Tilting­-Pad Journal Bearings : Theory and Experiment

   University essay from Blekinge Tekniska Högskola/Institutionen för maskinteknik

   Author : Paul-Henrik Bull; [2021]
   Keywords : ATPJB; Fluid-Film Lubrication; Model based control; Vibration Control;

   Abstract : A common choice of bearing for industrial applications such as turbomachinery and rotating compressors is the Tilting-Pad Journal Bearing (TPJB) due to its excellent stability properties. TPJB's are however limited by the reduction of damping in the fluid film at high velocities. READ MORE