Can gasoline engine Catalyst create a new benchmark for clean power?
Publish Time: 2024-10-12
Gasoline engine Catalyst plays a vital role in the modern automobile industry and has become one of the core technologies for creating a new benchmark for clean power. To achieve this goal, Catalyst design, material selection, manufacturing process and application technology need to be continuously innovated and optimized.1. Three-way catalytic converter (TWC)Basic principle: The three-way catalytic converter is the most commonly used gasoline engine Catalyst, which can simultaneously reduce the three main pollutants in emissions: carbon monoxide (CO), unburned hydrocarbons (HC) and nitrogen oxides (NOx).Precious metal materials: Platinum (Pt), rhodium (Rh) and palladium (Pd) are usually used as active components. These precious metals have high catalytic performance and can quickly start catalytic reactions at lower temperatures.Catalytic reaction: TWC converts CO and HC into CO₂ and H₂O through oxidation reactions, and converts NOx into nitrogen (N₂) through reduction reactions, thereby significantly reducing the impact of exhaust gas on the environment.2. High-efficiency Selective Catalytic Reduction (SCR)Working principle: SCR technology is mainly used to reduce NOx emissions in diesel engines, but can also be used in gasoline engines. By injecting urea aqueous solution (AD Blue) onto the Catalyst, ammonia (NH₃) is produced, which selectively reacts with NOx to produce harmless nitrogen and water.Catalyst carrier: The use of Catalyst carriers containing vanadium, tungsten and titanium ensures stable catalytic performance during high efficiency and long-term operation.3. Particulate filter (DPF)Particulate matter capture: The particulate filter (DPF) in gasoline engines is used to capture and burn particulate matter (PM) in exhaust gas to prevent them from entering the atmosphere.Regeneration mechanism: The DPF needs to be actively or passively regenerated regularly to restore its capture capacity by burning the captured particulate matter, which is usually achieved by increasing the exhaust temperature or using additives.4. Catalyst coating technologyCoating materials: Use alumina with high specific surface area as a carrier, and use advanced coating technology (such as sol-gel method, impregnation method and spraying method) to uniformly coat the precious metal Catalyst to improve the utilization rate and anti-aging ability of Catalyst.Coating optimization: By optimizing the thickness and uniformity of the coating, the thermal stability and anti-poisoning performance of Catalyst are improved, and the service life is extended.5. New materials and advanced composite materialsNanomaterials: Use nanotechnology to prepare high-performance Catalyst, increase the active area and reaction speed of Catalyst, and reduce the use of precious metals.Composite materials: Combine multiple materials (such as metal oxides, carbon-based materials and ceramic materials) to form a multifunctional Catalyst, enhance the anti-sulfur and anti-poisoning properties, and improve the comprehensive catalytic effect.6. Intelligent control and monitoringReal-time monitoring: Apply sensors and intelligent control systems to monitor the working status and emission level of Catalyst in real time to ensure that Catalyst operates under optimal conditions.Adaptive control: Through adaptive algorithms, the operating parameters of Catalyst are dynamically adjusted according to the engine operating conditions and exhaust gas composition to optimize the catalytic conversion performance.By adopting advanced technologies such as three-way catalytic converters, high-efficiency selective catalytic reduction, and particulate filters, and driven by Catalyst coatings, new material selection, intelligent control, and strict environmental protection standards, gasoline engine Catalyst can effectively reduce exhaust emissions and improve the environmental performance of the engine.
