Exhaust Emissions Sensing Using Reed Switches

Pollution, characterised by greenhouse gases and smog, significantly contributes to global warming, underscoring the critical importance of conscientious monitoring of automobile exhaust emissions by manufacturers. Exhaust emissions, predominantly comprised of polluting gases, pose a significant environmental challenge. To mitigate their impact, catalytic converters are employed, facilitating the conversion of these harmful gases into less deleterious substances through oxidation and reduction reactions.

A pivotal component in this exhaust emissions control mechanism is a simple vane equipped with a magnet, discreetly installed inside the tailpipes of automobiles. This vane serves to trigger a reed switch, which in turn provides vital feedback to the vehicle’s central processing unit (CPU). Drawing upon data gleaned from various sensors, such as oxygen sensors, the CPU dynamically adjusts the fuel mix ratio. This iterative process allows for the optimization of combustion efficiency, thereby reducing exhaust emissions and mitigating the vehicle’s environmental footprint.

By integrating magnet and reed switch technology into the exhaust emissions sensing system, automobile manufacturers enhance their capacity to monitor and regulate emissions effectively. This sophisticated feedback loop ensures that emissions remain within permissible limits, fostering environmental sustainability and combatting the adverse effects of pollution on climate change.

Through the seamless coordination of catalytic converters, sensors, and reed switch technology, vehicles can play a proactive role in mitigating environmental degradation. By prioritizing exhaust emissions control and adherence to stringent environmental standards, manufacturers contribute to a cleaner and healthier planet for current and future generations.

Application Classification

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.

Position sensing Type

When an application requires the end position of a movement sensed, or the sensing of a part when it comes into a zone, or when the Continue reading -> Jul 14, 2025

Recommended Products

The Reed Switches and Sensors used in this exhaust emissions sensing application 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.

Standard Size Reed Sensor, R2

R2-S Gull-wing SMD Formed Reed SensorR2-S Gull-wing SMD Formed Reed Sensor Pad LayoutR2-F Low Profile SMD Formed Reed SensorR2E-F Low Continue reading -> Jun 18, 2025

M8 Threaded Sensor Cylindrical Sensor, MS-228

MS-228 M8 Threaded Sensor Drawing starFeatures30W Contact Rating. Normally Open contact. Three sensitivity bands. Sputtered Ruthenium Continue reading -> Jun 18, 2025

Line Voltage switching Reed Switch, LV-1925

Full Length LeadsCropped LeadsSMD Formed LeadsVertical MountingHorizontal Mounting starFeaturesContact Rating Configurable. Ruthenium Continue reading -> Jul 14, 2025