Essays about: "proportional valve"

Showing result 11 - 13 of 13 essays containing the words proportional valve.

1. 11. Modeling and Control of Retarder using On/Off Solenoid Valves

   University essay from KTH/Reglerteknik

   Author : Vidar Steinsland; [2008]
   Keywords : ;

   Abstract : The Retarder is one of the main components in Scania's trucks' braking system and is used to brake down the truck and for maintaining a steady speed on descents. This Master's Thesis aims to investigate if the current system which uses a proportional valve to control the air pressure in the Retarder, can be replaced with two on/o® solenoid valves and a pressure chamber to control the air pressure, which would result in a cheaper and more robust system. READ MORE

3. 12. Modeling and Control of an Electro-Pneumatic Actuator System Using On/Off Valves

   University essay from Institutionen för systemteknik

   Author : Klas Håkansson; Mikael Johansson; [2007]
   Keywords : On Off solenoid valve; modeling; PID control; fuzzy control;

   Abstract : To control the exhaust gas recirculation (EGR) and the exhaust brake, the position of a butterfly valve connected to a piston inside a pneumatic cylinder is controlled by altering the pressure inside the cylinder. This thesis evaluates the possibility to do this with pulse width modulation (PWM) controlled On/Off valves. READ MORE

4. 13. New Control Concept for Haldex Limited Slip Coupling

   University essay from Lunds universitet/Institutionen för reglerteknik

   Author : Anders Hedin; [1999]
   Keywords : Technology and Engineering;

   Abstract : The aim of this master thesis is to investigate a new control principal for Haldex Limited Slip Coupling. HLSC can be characterized as a hydraulic slip coupling intended to be part of a 4WD-system for passenger vehicles fitted between the front and rear axle. The investigation is to be both theoretical and practical. READ MORE