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
Methods, systems and apparatus for displaying the multimedia information from wireless communication networks
Automatically selecting a paper with increased dimensions than originally desired for printing and adding advertisement content to the increased dimensional area of the paper
Method and apparatus for controlling a multi-node process
Method of providing tailor-made software for hospital departments
Integrated circuit packaging system with coupling features and method of manufacture thereof
Secure service for enabling communication for calling party when communication service for called party is suspended
Cooking brush
  Randomly Featured Patents
Water flushing device
Phosphorescent organic light emitting devices
Voltage converter having switching element with variable substrate potential
Position indicator for rising stem valve
Reinforced extruder for high molecular weight polyethylene
Shielded magnetoresistive head with charge clamp
Liquid crystal display device
Method to accurately and securely determine propagation delay and distance between sending and receiving node in packet network using cut-through approach and packet network node for executing
Shower curtain rod bracket
Microlithography illumination systems, components and methods