Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Air-fuel ratio feedback control method for internal combustion engines










Image Number 7 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
Hand sign
Methods and kits for predicting the responsiveness of hepatocellular carcinoma patients to 5-fluorouracil-based combination chemotherapy
Vehicle lamp component
Data center with free-space optical communications
Removable storage device and method for identifying drive letter of the removable storage device
Scalable architecture for rank order filtering
System and method for storing redundant information
  Randomly Featured Patents
High Q compact inductors for monolithic integrated circuit applications
Playing card reading device and method
Toy cableway
Combined golf target and practice tee
Polypyridinium
Oxygen sensor deterioration-detecting device for internal combustion engines
Vehicle chassis clamp
Process for preparing a catalyst component, resultant catalyst system, and process for synthesis of polymers
Reduced fat cremes
Method for fabricating a dual-diameter electrical conductor