Thermal Reactor

A thermal reactor, often abbreviated as TR, serves as an emission control device designed to reduce pollutants in exhaust gases by subjecting them to high temperatures for oxidation. Here are its key features and functions:

1. High-Temperature Chamber: The thermal reactor comprises a high-volume chamber that is thermally isolated and typically replaces the conventional exhaust manifold. This chamber provides a controlled environment for the afterburning of exhaust pollutants.
2. Exhaust Pollutant Oxidation: Its primary function is to promote the oxidation of harmful exhaust pollutants, such as unburned hydrocarbons (HC) and carbon monoxide (CO), by exposing them to extremely high temperatures.
3. Rotary Engine Application: Thermal reactors are commonly found in Mazda rotary engines, where they play a crucial role in reducing emissions by oxidizing pollutants in the exhaust gases.
4. Piston Engine Application: Some piston engines, such as those used in BMW vehicles, may also incorporate thermal reactors as part of their emission control systems to achieve compliance with environmental regulations.
5. Air Injection Systems: In certain configurations, thermal reactors are integrated into air injection systems, where they facilitate the oxidation of HC and CO by providing extended exhaust gas residence times in a localized area.
6. Specialized Exhaust Manifold: The thermal reactor is typically integrated into a specially designed exhaust manifold, which utilizes heat and airflow to create conditions conducive to the oxidation of exhaust pollutants.
7. Pollution Reduction: By effectively oxidizing unburned hydrocarbons and carbon monoxide in the exhaust gases, thermal reactors contribute to the reduction of harmful emissions, thereby helping to minimize environmental pollution.
8. Regulatory Compliance: Thermal reactors play a crucial role in ensuring compliance with emission regulations imposed by regulatory authorities, as they help vehicles meet stringent emission standards.

In summary, a thermal reactor is an emission control device that utilizes high-temperature oxidation to reduce pollutants in exhaust gases, commonly found in Mazda rotary engines and some piston engines, where they contribute to minimizing environmental pollution and achieving regulatory compliance.