Tenneco has patented a vehicle exhaust system with a pre-heating burner assembly to reduce emissions during start-up. The system includes a metallic mesh filter and catalytic washcoat to minimize emissions. The design aims to improve air quality by reducing harmful pollutants released during engine start-up. GlobalData’s report on Tenneco gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on Tenneco, Piston head combustion chambers was a key innovation area identified from patents. Tenneco's grant share as of January 2024 was 63%. Grant share is based on the ratio of number of grants to total number of patents.
Vehicle exhaust system with pre-heating burner assembly
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A recently granted patent (Publication Number: US11885251B2) discloses an innovative exhaust system for vehicles. The system includes an exhaust pipe section with a selective catalytic reduction (SCR) catalyst and a burner assembly connected to the exhaust pipe section. The burner assembly features a burner with a combustion chamber, an igniter, and a connecting tube with a catalytic washcoat. This washcoat, made of platinum group metals, chemically reacts with emissions generated by the burner, reducing harmful pollutants like nitrogen oxide (NOx), carbon monoxide (CO), and hydrocarbons (HC). The system's design allows for efficient emission control and improved air quality.
Furthermore, the patent details a method for pre-heating the exhaust system by injecting fuel into the burner assembly's combustion chamber and igniting an air/fuel mixture to generate heat and emissions. The catalytic washcoat in the connecting tube initiates a chemical reaction with the emissions, reducing pollutant concentrations during the start-up period. Adjusting the fuel injection rate and air/fuel ratio post-start-up period leads to a leaner combustion environment, while a filter element traps particulate matter. The method aims to enhance emission control and reduce environmental impact, showcasing a comprehensive approach to vehicle exhaust system design and operation.
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GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.
