Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Catalyst activation control system for engines










Image Number 10 for United States Patent #6513319.

An engine has variable timing mechanisms, which are controlled in starting an engine to set valve opening overlap of an intake valve and an exhaust valve around 30.degree. CA. In this case, internal EGR is actively conducted and fuel burning velocity within a cylinder becomes relatively slow and unburned fuel within the cylinder is emitted to an exhaust pipe to be post-burned by itself. Temperature of exhaust gas is maintained high and catalyst converters in the cold state may be activated quickly by actively implementing the post-burning within the exhaust pipe. Further, ignition timing is retarded, an air-fuel ratio is controlled at a slightly lean ratio and the exhaust valve is advanced. The effect of raising the temperature of exhaust gas by the post-burning may be realized more reliably by combining each of these controls.








 
 
  Recently Added Patents
Biometric data display system and method
Headset, terminal, and method capable of switching headset mode
Adaptive block pre-fetching method and system
Emulsions containing arylboronic acids and medical articles made therefrom
Information processing apparatus and method
Universal tablet and smartphone holder
Electronic flash device
  Randomly Featured Patents
Humidifying apparatus for fuel cell
Method and apparatus for mixing gaseous oxidant and lixiviant in an in situ leach operation
Semiconductor component and a method of fabricating the semiconductor component
Electric pressure washer
Infrared radiation-burglary detector
Medical transport technology
Process for the compression of steam and thermal circuits for its implementation
Eye wash station
Electrophotographic photoconductor and aromatic polycarbonate resin for use therein
Method and apparatus for variable frequency controlled compressor and fan