Reed Switches in Exhaust Emissions Sensing
Pollution, greenhouse gases and smog play a large role in global warming and it is most important to ensure that automobile emissions are monitored conscientiously by manufacturers. These polluting gases which make up most of emission levels in automobiles are reduced by catalytic converters which convert them into less harmful gases by catalyzing an oxidation and reduction reaction. A simple vane with a magnet fitted inside the tailpipe of automobiles is used to trigger a reed switch which provides feedback after using data from other sensors such as Oxygen sensors to the CPU, to adjust fuel mix ratio thereby reducing emission levels.
Applications are classified as Position Sensing, Pulse Counting, Electromagnetic or Relay, Temperature Sensing or Magnet Biasing types. This application is classified as follows and the link gives more information on best practices to help select the most suitable AT band and matching magnet.
The Reed Switches and Sensors used in such applications need to be robust, durable and efficient in meeting a high life expectancy. Our engineers work hard in life testing our products under various conditions, and our intention is to ensure end product durability and life. Although we wouldn’t want to restrict any of our products for use in only certain applications, the recommended products for use in this application are listed below.
R2 Standard size SMD Reed Sensor
|Omni polar, normally open (NO), 19.5 mm SMD and low-profile SMD pitch, 10 W...Continue reading|
MS-228, M8 Threaded Cylindrical Sensor
|Omin polar, 0.75 mm pitch M8 thread. Rugged body and high wall thickness of...Continue reading|