# US 10,504,301 B2 · Device for displaying available travel distance of vehicle > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,504,301 B2 - Document ID: US10504301B2 - Status: Granted - Kind: B2 - Application number: 15/714,236 - Filed: 2017-09-25 - Published: 2018-03-29 - Granted: 2019-12-10 - Earliest claimed: 2016-09-29 - Assignees: Honda Motor Co., Ltd. - Applicants: Honda Motor Co., Ltd. - Inventors: Kenta Shuto; Takashi Tetsuka - Web page: https://patentgrep.com/patent/US10504301B2 ## CPC - G07C 5/004: {Indicating the operating range of the engine (economical driving B60R16/0236, F02B77/084; measuring liquid fuel of an engine G01F9/00)} - B60K 35/22: Display screens - B60K 35/28: characterised by the type of the output information, e.g. video entertainment or vehicle dynamics information; characterised by the purpose of the output information, e.g. for attracting the attention of the driver - G01F 23/246: {thermal devices} - G01F 23/32: using rotatable arms or other pivotable transmission elements - B60K 35/10: Input arrangements, i.e. from user to vehicle, associated with vehicle functions or specially adapted therefor - B60K 35/50: Instruments characterised by their means of attachment to or integration in the vehicle (B60K35/231 takes precedence) - B60K 2015/03217: {Fuel level sensors} - B60K 2015/03223: {comprising at least two level fuel sensors} - B60K 2360/169: Remaining operating distance or charge - B60L 2260/52: drive range estimation, e.g. of estimation of available travel distance - B60W 2530/209: Fuel quantity remaining in tank - B60Y 2300/52: Engine fuel consumption - G07C: TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE - B60K: ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES - G01F: MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME - B60L: PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES (arrangements or mounting of electrical propulsion units or of plural diverse prime-movers for mutual or common propulsion in vehicles B60K1/00, B60K6/20; arrangements or mounting of electrical gearing in vehicles B60K17/12, B60K17/14; preventing wheel slip by reducing power in rail vehicles B61C15/08; dynamo-electric machines H02K; control or regulation of electric motors H02P); SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES (electric coupling devices combined with mechanical couplings of vehicles B60D1/64; electric heating for vehicles B60H1/00); ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL (control or regulation of electric motors H02P); MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES - B60W: CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT - B60Y: INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY ## Abstract A display device also includes an available amount-of-fuel calculator for calculating an available amount of fuel, an average mileage calculator for calculating an average mileage from a consumed amount of fuel and a vehicle's traveled distance, an available travel distance calculator for calculating an available travel distance from the available amount of fuel and the average mileage, and a display unit for displaying the available travel distance. The available amount-of-fuel calculator uses a learned value based on outputs as a corrective value for correcting the output of a second sensor when the calculation of the available amount of fuel switches from being based on the output of the second sensor to being based on the output of a first sensor. ## Claims ### Claim 1 A display device for displaying an available travel distance of a vehicle by calculating an available amount of fuel in a fuel tank on the basis of outputs of a first sensor and a second sensor which are provided in the fuel tank, the second sensor detecting the available amount of fuel in the fuel tank at a fuel level higher than a reserve point in the fuel tank, the display device comprising: an electronic control unit (ECU) that comprises: an available amount-of-fuel calculator configured to calculate the available amount of fuel from the output of the first sensor at a fuel level lower than the reserve point and from the output of the second sensor at a fuel level higher than the reserve point, an average mileage calculator configured to calculate an average mileage from a consumed amount of fuel and a vehicle's traveled distance per unit time, and an available travel distance calculator configured to calculate the available travel distance from the available amount of fuel and the average mileage; and a display configured to display the available travel distance, wherein the available amount-of-fuel calculator uses a learned value based on the outputs of the first and second sensors as a corrective value for correcting the output of the second sensor when the calculation of the available amount of fuel switches from being based on the output of the second sensor to being based on the output of the first sensor. ### Claim 2 (depends on 1) The display device for displaying the available travel distance of the vehicle according to claim 1, wherein the first sensor detects a fuel level at the reserve point in the fuel tank, and the second sensor includes a sensor of a fuel sender unit. ### Claim 3 (depends on 2) The display device for displaying the available travel distance of the vehicle according to claim 2, wherein the available amount-of-fuel calculator calculates the available amount of fuel on the basis of the output of the second sensor at a fuel level higher than the reserve point, as an available amount-of-fuel reference by correcting a measured available amount of fuel represented by the output with the learned value. ### Claim 4 (depends on 3) The display device for displaying the available travel distance of the vehicle according to claim 3, wherein the learned value includes a difference between the measured available amount of fuel represented by the output of the second sensor when the first sensor detects the reserve point and a predetermined available amount of fuel at the reserve point. ### Claim 5 (depends on 4) The display device for displaying the available travel distance of the vehicle according to claim 4, wherein the available amount-of-fuel calculator calculates the available amount-of-fuel reference by subtracting a value produced by multiplying the learned value that includes the difference by a corrective coefficient which varies as the measured available amount of fuel represented by the output approaches the reserve point, from the measured available amount of fuel. ### Claim 6 (depends on 2) The display device for displaying the available travel distance of the vehicle according to claim 2, wherein the learned value includes a difference between the measured available amount of fuel represented by the output of the second sensor when the first sensor detects the reserve point and a predetermined available amount of fuel at the reserve point. ### Claim 7 (depends on 6) The display device for displaying the available travel distance of the vehicle according to claim 6, wherein the available amount-of-fuel calculator calculates the available amount-of-fuel reference by subtracting a value produced by multiplying the learned value that includes the difference by a corrective coefficient which varies as the measured available amount of fuel represented by the output approaches the reserve point, from the measured available amount of fuel. ### Claim 8 (depends on 1) The display device for displaying the available travel distance of the vehicle according to claim 1, wherein the available amount-of-fuel calculator calculates the available amount of fuel on the basis of the output of the second sensor at a fuel level higher than the reserve point, as an available amount-of-fuel reference by correcting a measured available amount of fuel represented by the output with the learned value. ### Claim 9 (depends on 8) The display device for displaying the available travel distance of the vehicle according to claim 8, wherein the learned value includes a difference between the measured available amount of fuel represented by the output of the second sensor when the first sensor detects the reserve point and a predetermined available amount of fuel at the reserve point. ### Claim 10 (depends on 9) The display device for displaying the available travel distance of the vehicle according to claim 9, wherein the available amount-of-fuel calculator calculates the available amount-of-fuel reference by subtracting a value produced by multiplying the learned value that includes the difference by a corrective coefficient which varies as the measured available amount of fuel represented by the output approaches the reserve point, from the measured available amount of fuel. ### Claim 11 (depends on 1) The display device for displaying the available travel distance of the vehicle according to claim 1, wherein the learned value includes a difference between the measured available amount of fuel represented by the output of the second sensor when the first sensor detects the reserve point and a predetermined available amount of fuel at the reserve point. ### Claim 12 (depends on 11) The display device for displaying the available travel distance of the vehicle according to claim 11, wherein the available amount-of-fuel calculator calculates the available amount-of-fuel reference by subtracting a value produced by multiplying the learned value that includes the difference by a corrective coefficient which varies as the measured available amount of fuel represented by the output approaches the reserve point, from the measured available amount of fuel.