{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9664605","patent":{"patent_number":"US-9664605","title":"Fuel density detection device","assignee":null,"inventors":[],"filing_date":"2015-08-19T00:00:00.000Z","publication_date":"2017-05-30T00:00:00.000Z","cpc_codes":["G01N"],"num_claims":10,"abstract":"A pulsation detection unit detects, as an actual characteristic, a pulsation frequency of a pressure pulsation, which is caused in fuel pressure, or a physical quantity corresponding to the pulsation frequency, according to a sensor signal from a pressure sensor. The pressure sensor detects a fuel pressure of fuel supplied to a fuel injection valve, which is equipped to an internal combustion engine. A storage unit stores, as a reference characteristic, a reference frequency of a predetermined reference pulsation or a physical quantity corresponding to the reference frequency. A density detection unit detects a fuel density according to a quantity of deviation between the reference characteristic, which is stored in the storage unit, and the actual characteristic, which is detected with the pulsation detection unit."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Fuel density detection device","description":"A pulsation detection unit detects, as an actual characteristic, a pulsation frequency of a pressure pulsation, which is caused in fuel pressure, or a physical quantity corresponding to the pulsation ","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9664605","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-9664605","citation_suggestion":"Patentable. \"Fuel density detection device\" (US-9664605). https://patentable.app/patents/US-9664605","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9664605","json":"https://patentable.app/api/llm-context/US-9664605","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T05:37:20.507Z"}