Resources Contact Us Home
Method for measuring component of a gaseous emission

Image Number 13 for United States Patent #6454931.

A modified universal exhaust gas oxygen sensor, referred to herein as a CEGA sensor, is provided which can be used to measure the concentration of a variety of components of a gaseous fuel emission including CO, CO.sub.2, O.sub.2, H.sub.2, and H.sub.2 O. The CEGA sensor-employs at least one additional electrode on a ceramic substrate which possess a different catalytic activity relative to the electrodes that normally found on a UEGO sensor. The ceramic substrate may be made of any suitable ceramic and is preferably made of zirconia. The difference in catalytic activity between the additional electrode(s) and the electrodes native to the UEGO sensor create an oxygen gradient which enables a measure of combustion completeness to be calculated. In combination with an air/fuel ratio measured by the sensor, the concentrations of different components in the emission can be calculated. Several methods, devices and systems which can be used with various types of ceramic sensors including a CEGA sensor in order to improve their performance are also provided.

  Recently Added Patents
Distributed multicast packet replication with centralized quality of service
Electronic system auto-mute control circuit and control method thereof
Hybrid fiber constructions to mitigate creep in composites
Methods for forming patterned structures
Scalable encoding apparatus, scalable decoding apparatus, scalable encoding method, scalable decoding method, communication terminal apparatus, and base station apparatus
High power insulated gate bipolar transistors
  Randomly Featured Patents
Enhanced processor element structure in a reconfigurable integrated circuit device
Removable file programming unit
Internet server apparatus, method and device for implementing emergency information instructions
Drinking container
Well logging instrument string having flexibly coupled segments and a selectably operable flexible coupling therefor
Implantable penile prosthesis pump
Liquid crystal compounds, mixtures and devices
Grip device for a food cooking vessel, in particular a frying-pan
Network interface device with environmentally protected compartment
External combustion engine with rotary piston controlled valve