Resources Contact Us Home
Evaporated fuel treatment device for internal combustion engine

Image Number 5 for United States Patent #7213450.

A sealing valve 28 that controls a communication state between a fuel tank 10 and a canister 26 is provided. During stop of an internal combustion engine, the sealing valve 28 is generally closed, and the canister 26 is opened to the atmosphere. The sealing valve 28 is opened when the internal combustion engine is stopped, and differential pressure exceeding a valve opening determination value is generated between tank internal pressure and atmospheric pressure. A change in the tank internal pressure generated between before and after the sealing valve 28 is opened is detected. When the change in the tank internal pressure is below a predetermined determination value, closing failure of the sealing valve is determined.

  Recently Added Patents
Electrode assembly with centrally wound separator member
Materials and methods for stress reduction in semiconductor wafer passivation layers
MEMS structure and method for making the same
Resolution setting apparatus, resolution setting method, and recording medium recording a resolution setting program when a television is used as a monitor of a computer
Para-xylylene based microfilm elution devices
Precision geolocation of moving or fixed transmitters using multiple observers
Feedback method and processing system for policy installation failures
  Randomly Featured Patents
Method of forming high integrity tungsten silicide thin films
Content addressable memory having redundancy capabilities
Oxidative stabilization of collagen containing materials
Method for managing a non-volatile memory in a smart card
Stabilized polymer composition
System and method for maintaining target response times in business methods
Method of detecting the channel identity of a number of channels in a mobile radio system
Picture processing method in optical measuring apparatus
Automatic sample collector
Railway hopper car door lock