Essays about: "Exhaust Gas Recirculation"

Showing result 16 - 20 of 24 essays containing the words Exhaust Gas Recirculation.

1. 16. Modelling of an EGR System

   University essay from Lunds universitet/Institutionen för reglerteknik

   Author : Fredrik Olin; [2007]
   Keywords : EGR; mean value engine model; and poppet valve.; Technology and Engineering;

   Abstract : Due to new emission legislations in Europe and in the USA truck manufacturers are facing new difficulties when it comes to meeting these demands. This new legislation will demand more accurate models for simulation and malfunction diagnosis. READ MORE

3. 17. 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. 18. Flow- and concentration variation between the cylinders of a diesel engine

   University essay from Institutionen för systemteknik

   Author : David Näsström; [2007]
   Keywords : Diesel engine; EGR; liquid water; cylinder to cylinder charge variation; measuring water;

   Abstract : The demands on tomorrows diesel engines regarding fuel consumption and emission levels keep getting more difficult to fulfill. Due to this fact, the control demand is getting bigger and bigger. READ MORE

5. 19. An Investigation of Maximum Brake Torque Timing based on Ionization Current Feedback

   University essay from Institutionen för systemteknik

   Author : Janek Magnusson; [2007]
   Keywords : MBT timing; maximum brake torque; spark advance; PPP; tändningstidpunkt; maximalt arbete; MBT; jonström; jonströmsåterkoppling; PPP;

   Abstract : For every operating condition of an internal combustion engine there exists an optimal spark timing, called maximum brake torque (MBT), which maximises the output torque and the efficiency of the engine. Traditionally MBT timing is implemented as an open-loop control where the ignition timing is found by using a combination of static lookup tables and sensor information. READ MORE

6. 20. Recognizing Combustion Variability for Control of Gasoline Engine Exhaust Gas Recirculation using Information from the Ion Current

   University essay from Sektionen för Informationsvetenskap, Data– och Elektroteknik (IDE)

   Author : Anna Holub; Jie Liu; [2006]
   Keywords : Internal combustion engines; ion current; exhaust gas recirculation; engine control; neural networks; K-nearest neighbour; combustion variability;

   Abstract : The ion current measured from the spark plug in a spark ignited combustion engine is used as basis for analysis and control of the combustion variability caused by exhaust gas recirculation. Methods for extraction of in-cylinder pressure information from the ion current are analyzed in terms of reliability and processing efficiency. READ MORE