# US 10,309,914 B2 · Use of a measuring appliance for examining fuel, oil and/or hydraulic fluid > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,309,914 B2 - Document ID: US10309914B2 - Status: Granted - Kind: B2 - Application number: 15/385,332 - Filed: 2016-12-20 - Published: 2017-06-22 - Granted: 2019-06-04 - Earliest claimed: 2015-12-21 - Assignees: Robert Bosch GmbH - Applicants: Robert Bosch GmbH - Inventors: Andreas Graessl; Klaus Marx; Reiner Krapf; Ulli Hoffmann - Web page: https://patentgrep.com/patent/US10309914B2 ## CPC - G01N 24/08: by using nuclear magnetic resonance (G01N24/12 takes precedence) - G01N 33/28: Oils {, i.e. hydrocarbon liquids} (edible oils or edible fats G01N33/03) - G01R 33/3808: {Magnet assemblies for single-sided MR wherein the magnet assembly is located on one side of a subject only; Magnet assemblies for inside-out MR, e.g. for MR in a borehole or in a blood vessel, or magnet assemblies for fringe-field MR} - G01N 33/22: Fuels; Explosives - G01R 33/448: {Relaxometry, i.e. quantification of relaxation times or spin density (G01R33/50 takes precedence)} - G01N: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES (measuring or testing apparatus or processes other than immunoassay, involving enzymes or microorganisms C12M, C12Q) - G01R: MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES (indicating correct tuning of resonant circuits H03J3/12) ## Abstract A hand-held measuring appliance includes at least a nuclear magnetic resonance sensor, a control apparatus configured to control the measuring appliance, an evaluation apparatus configured to evaluate a measurement signal supplied by the nuclear magnetic resonance sensor, an output apparatus configured to output ascertained information, and an apparatus for energy supply. The measuring appliance is configured to examine at least one of fuel, oil, and hydraulic fluid. ## Claims ### Claim 1 A method of examining at least one of fuel, oil, and hydraulic fluid with a measuring appliance including an apparatus for energy supply, the method comprising: generating a measurement signal with at least a nuclear magnetic resonance sensor of the measuring appliance; controlling the measuring appliance with a control apparatus of the measuring appliance; evaluating the measurement signal supplied by the nuclear magnetic resonance sensor with an evaluation apparatus of the measuring appliance; outputting ascertained information based on the evaluated measurement signal corresponding to an examination of at least one of the fuel, the oil, and the hydraulic fluid with an output apparatus of the measuring appliance; using the measuring appliance in a vehicle and during operation of the vehicle; and using the ascertained information for open-loop and/or closed-loop control of at least one component of the vehicle. ### Claim 2 (depends on 1) The method according to claim 1, further comprising: evaluating the measurement signal supplied by the nuclear magnetic resonance sensor with the evaluation apparatus of the measuring appliance, wherein the measurement signal includes a spectrum and/or a relaxation time of the measurement signal resulting from the excitation of nuclear spins in the fuel and/or oil and/or hydraulic fluid examined by the nuclear magnetic resonance sensor. ### Claim 3 (depends on 1) The method according to claim 1, further comprising: comparing the ascertained information with reference data from a reference database with the evaluation apparatus, wherein the ascertained information includes a spectrum and/or a relaxation time. ### Claim 4 (depends on 1) The method according to claim 1, further comprising: displaying the ascertained information with a display of the output apparatus, wherein the ascertained information includes a spectrum and/or a relaxation time, and/or a deviation of ascertained information from reference data from a reference database. ### Claim 5 (depends on 1) The method according to claim 1, further comprising: calibrating the measuring appliance using a tetramethylsilane sample provided within the appliance before examining the fuel and/or the oil and/or hydraulic fluid. ### Claim 6 (depends on 1) The method according to claim 1, further comprising: using the measuring appliance directly on a fuel-conducting and/or oil-conducting and/or hydraulic-fluid-conducting component of the vehicle. ### Claim 7 (depends on 1) The method according to claim 1, further comprising: displaying at least one of the ascertained information and a deviation of ascertained information from reference data in a reference database at and/or in an operator's platform, wherein the ascertained information includes a spectrum and/or a relaxation time. ### Claim 8 A measuring appliance for a vehicle, comprising: a nuclear magnetic resonance sensor; a control apparatus configured to control the measuring appliance; an evaluation apparatus configured to evaluate a measurement signal supplied by the nuclear magnetic resonance sensor; an output apparatus configured to output ascertained information based on the evaluated measurement signal; and an apparatus for energy supply, wherein at least one of the nuclear magnetic resonance sensor and the evaluation apparatus is configured to examine at least one of fuel, oil, and hydraulic fluid of the vehicle, and wherein the ascertained information is used for open-loop and/or closed-loop control of at least one component of the vehicle. ### Claim 9 A method for examining at least one of fuel, oil, and hydraulic fluid of a vehicle with a measuring appliance in the vehicle, comprising: calibrating a nuclear magnetic resonance sensor of the measuring appliance using a tetramethylsilane sample provided within the appliance; measuring at least one spectrum and/or one relaxation time resulting from an excitation of nuclear spins in at least one of the fuel, the oil, and the hydraulic fluid of the vehicle; evaluating measurement signals from the nuclear magnetic resonance sensor by comparing the measurement signals with reference data from a reference database; outputting the evaluation results, including at least one of ascertained information and a deviation of ascertained information from reference data of a reference database; and using the ascertained information for open-loop and/or closed-loop control of at least one component of the vehicle.