Resources Contact Us Home
Air-fuel ratio feedback control method for internal combustion engines

Image Number 10 for United States Patent #4993393.

A method of controlling air-fuel ratio of a mixture supplied to an internal combustion engine in a feedback manner responsive to an output signal from an exhaust gas concentration sensor. The air-fuel ratio of the mixture is controlled to a desired value by means of proportional control and integral control. The proportional control is inhibited, when the value of the output signal has changed from a lean side to a rich side with respect to a predetermined reference value while the engine is operating in one of a predetermined high load condition and a predetermined high rotational speed condition.

  Recently Added Patents
Headset electronics
Pattern identification apparatus, control method and program thereof
Pre-distortion architecture for compensating non-linear effects
Emergent information database management system
Automated solar collector installation design including ability to define heterogeneous design preferences
Chemically bonded carbon nanotube-polymer hybrid and nanocomposite thereof
2,5-disubstituted piperidine orexin receptor antagonists
  Randomly Featured Patents
Method of producing cell extract for cell-free protein synthesis
Device for separation of folders in a layer of folders
Power switching apparatus
Program generation method for solving differential equations using mesh variables and staggered variables
Particle counting method
Electronic part with groove in lead
Blood processing apparatus with digitally controlled linear voltage regulator for optical pulses
Process for heat treating food product
Detergent composition
2- and 8-azido(2'-5')oligoadenylates and antiviral uses thereof