{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-8540953","patent":{"patent_number":"US-8540953","title":"Exhaust gas control apparatus and reductant dispensing method for internal combustion engine","assignee":null,"inventors":[],"filing_date":"2011-07-06T00:00:00.000Z","publication_date":"2013-09-24T00:00:00.000Z","cpc_codes":["G05D"],"num_claims":7,"abstract":"Utilizing the finding that the state of adsorption of NH3 on a selective reduction type NOx catalyst includes a weakly adsorbed state in which the adsorbed NH3 is useful for a reduction reaction of NOx and a strongly adsorbed state in which the adsorbed NH3 is not useful for the reduction reaction of NOx unless the state of adsorption is changed into the weakly adsorbed state, the apparatus of the invention includes an actual weakly-adsorbed amount-calculation NH3 that is adsorbed on the selective reduction type NOx catalyst in the weakly adsorbed state, and a dispensation control portion that performs a dispensation control of the reductant dispensed by a reductant-dispensation portion, according to the actual weakly adsorbed amount calculated by the actual weakly adsorbed amount calculation portion."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Exhaust gas control apparatus and reductant dispensing method for internal combustion engine","description":"Utilizing the finding that the state of adsorption of NH3 on a selective reduction type NOx catalyst includes a weakly adsorbed state in which the adsorbed NH3 is useful for a reduction reaction of NO","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-8540953","license":"CC-BY-4.0-like","license_terms":"AI-generated analysis on this page (summary, layman_explanation, technical_analysis, business_analysis, faqs) may be reused with attribution and a visible link back to the canonical URL above. Patent abstracts, claims, and bibliographic data are USPTO public domain.","required_link":"https://patentable.app/patents/US-8540953","citation_suggestion":"Patentable. \"Exhaust gas control apparatus and reductant dispensing method for internal combustion engine\" (US-8540953). https://patentable.app/patents/US-8540953","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-8540953","json":"https://patentable.app/api/llm-context/US-8540953","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T16:18:07.630Z"}