Title :
Individual cylinder air-fuel ratio control with a single EGO sensor
Author :
Grizzle, J.W. ; Dobbins, K.L. ; Cook, J.A.
Author_Institution :
Dept. of Electr. Eng. & Comput. Sci., Michigan Univ., Ann Arbor, MI, USA
Abstract :
An approach to achieving uniform cylinder-to-cylinder air-fuel ratio control in the face of injector mismatch and unbalanced airflow due to engine geometry is presented. A key feature of the proposed method is that it functions well with the switching-type exhaust gas oxygen sensor commonly used in automobiles. The controller design, from modeling to experimental implementation in a dynamometer test facility, is documented. A method for achieving an extended operating region based on scheduling the sampling is described.<>
Keywords :
automotive electronics; electric sensing devices; flow control; internal combustion engines; air-fuel ratio control; automobiles; controller design; dynamometer test facility; engine geometry; exhaust gas oxygen sensor; extended operating region; individual cylinder; injector mismatch; scheduled sampling; single EGO sensor; switching-type sensor; unbalanced airflow; Automobiles; Control systems; Engine cylinders; Exhaust systems; Fuels; Gas detectors; Maldistribution; Manifolds; Sensor systems; Valves;
Journal_Title :
Vehicular Technology, IEEE Transactions on
