Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Diagnosis device for exhaust gas recycling device of internal combustion engine










Image Number 13 for United States Patent #4870942.

A diagnosis device for an exhaust gas recycling device diagnoses whether or not an exhaust gas recycling device is operating normally; the temperature of an exhaust gas recycling passage is detected by a temperature detection means, a decision is made by an exhaust gas recycling operating region detection means whether or not the operating region is such as to carry out exhaust gas recycling, when a decision is made that the operating region is such as to carry out exhaust gas recycling a counter is incremented and when otherwise is decremented, and a decision that the exhaust gas recycling is not being carried out normally, that is that the exhaust gas recycling device has failed, is made when the count value of this counter is at least a certain value and the temperature of the exhaust gas recycling passage is not more than a certain value.








 
 
  Recently Added Patents
Enhancement of semiconducting photovoltaic absorbers by the addition of alkali salts through solution coating techniques
Remote device pairing setup
Micromechanical component, device for beam deflection of monochromatic light, and spectrometer
Active tags
Systems and methods for sorting particles
Transferring storage devices within storage device testing systems
High surface area composition for use in the catalytic hydroconversion of a heavy hydrocarbon feedstock, a method making such composition and its use
  Randomly Featured Patents
Fishing reel
Pipe joint construction
Use of zirconium salts to improve the surface sizing efficiency in paper making
Nonvolatile semiconductor memory and manufacturing method for the same
Method of forming a headed thermoplastic tube
System and method of locating lightning strikes
Process for producing benzene
Handle
Lithium metal phosphate/carbon nanocomposites as cathode active materials for rechargeable lithium batteries
Process for producing an assembler for a flexible foodstuff