publication . Bachelor thesis . 2016

Design of Virtual Crank Angle Sensor based on Torque Estimation

Roswall, Tobias;
Open Access English
  • Published: 01 Jan 2016
  • Publisher: KTH, Skolan för elektro- och systemteknik (EES)
  • Country: Sweden
The topic of thesis is estimation of the crank angle based on pulse signals from an induction sensor placed on the flywheel. The engine management system performs many calculations in the crank angle domain which means that a good accuracy is needed for this measurement. To estimate the crank angle degree the torque balance on the crankshaft based on Newtons 2nd law is used. The resulting acceleration is integrated to give engine speed and crank angle. This approach is made for two crankshaft models, the rigid crankshaft approach and the lumped mass model. The latter can capture the torsional effects of the crankshaft twisting and bending due to torques acting on ...
Related Organizations
Download from



Figure 4.13: Estimation error for cylinders 1-6. Operating point 25% load and 1200

Extrapolation. The Y-axis is in Relative error. The reference error is 25% load 1200 RPM for the PS model.

3 h c i w s

0 s

3 u

Powered by OpenAIRE Open Research Graph
Any information missing or wrong?Report an Issue