# US 2021/0279979 A1 · Fuel property diagnostic device

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 2021/0279979 A1
- Document ID: US20210279979A1
- Status: Published application
- Kind: A1
- Application number: 17/179,414
- Filed: 2021-02-19
- Published: 2021-09-09
- Earliest claimed: 2020-03-06
- Assignees: Toyota Jidosha Kabushiki Kaisha
- Applicants: Toyota Jidosha Kabushiki Kaisha
- Inventors: Yoshiya YAMASHITA; Tetsu YAMADA
- Web page: https://patentgrep.com/patent/US20210279979A1

## CPC

- G07C 5/008: {communicating information to a remotely located station (transmission systems for measured values G08C)}
- G07C 5/0808: {Diagnosing performance data (testing of vehicles G01M17/00; testing of electrical installation on vehicles G01R31/005)}
- F01N 3/021: by means of filters
- F01N 11/00: Monitoring or diagnostic devices for exhaust-gas treatment apparatus
- F01N 11/002: {the diagnostic devices measuring or estimating temperature or pressure in, or downstream of the exhaust apparatus}
- F02D 41/029: {the exhaust gas treating apparatus being a particulate filter}
- F02D 41/22: Safety or indicating devices for abnormal conditions {(in air/fuel ratio feedback systems F02D41/1495, in electric control linkage F02D11/107, in purge control systems F02M25/0809)}
- G07C 5/006: {Indicating maintenance}
- G07C 5/08: Registering or indicating performance data other than driving, working, idle, or waiting time, with or without registering driving, working, idle or waiting time
- G07C 5/0816: {Indicating performance data, e.g. occurrence of a malfunction}
- F02D 2041/224: {Diagnosis of the fuel system}
- F02D 2200/0611: Fuel type, fuel composition or fuel quality
- F02D 2200/70: said parameters being related to the vehicle exterior
- G08G 1/207: {with respect to certain areas, e.g. forbidden or allowed areas with possible alerting when inside or outside boundaries}
- 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
- F01N: GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES (arrangements in connection with gas exhaust of propulsion units in vehicles B60K13/00; combustion-air intake silencers specially adapted for, or arranged on, internal-combustion engines F02M35/00; protecting against, or damping, noise in general G10K11/16)
- F02D: CONTROLLING COMBUSTION ENGINES (vehicle fittings, acting on a single sub-unit only, for automatically controlling vehicle speed B60K31/00; conjoint control of vehicle sub-units of different type or different function, road vehicle drive control systems for purposes other than the control of a single sub-unit B60W)
- G08G: TRAFFIC CONTROL SYSTEMS (guiding railway traffic, ensuring the safety of railway traffic B61L; arrangement of road signs or traffic signals E01F9/00; radar or analogous systems, sonar systems, lidar systems specially adapted for traffic control G01S13/91, G01S15/88, G01S17/88; {radar or analogous systems, sonar systems, lidar systems specially adapted for anti-collision purposes G01S13/93, G01S15/93, G01S17/93})

## Abstract

A fuel property diagnostic device configured to diagnose properties of fuel for a vehicle includes a computer configured to diagnose the properties of the fuel for each region based on the number of vehicles with clogging. The number of vehicles with clogging is the number of vehicles in which an internal combustion engine provided with an exhaust gas control device in an exhaust passage is mounted, the exhaust gas control device includes a filter for capturing particulate matter contained in an exhaust gas, and the filter is clogged.

## Claims

### Claim 1

A fuel property diagnostic device configured to diagnose properties of fuel for a vehicle, the fuel property diagnostic device comprising:
a computer configured to diagnose the properties of the fuel for each region based on the number of vehicles with clogging, wherein the number of vehicles with clogging is the number of vehicles in which an internal combustion engine provided with an exhaust gas control device in an exhaust passage is mounted, the exhaust gas control device includes a filter for capturing particulate matter contained in an exhaust gas, and the filter is clogged.

### Claim 2 (depends on 1)

The fuel property diagnostic device according to claim 1, wherein the computer is configured to diagnose the properties of the fuel in a target region that is subject to diagnostics as not being up to a specified standard when a total number of vehicles that have traveled in the target region exceeds a predetermined number and a ratio of the number of vehicles with clogging to the total number of vehicles exceeds a predetermined ratio.

### Claim 3 (depends on 1)

The fuel property diagnostic device according to claim 1, wherein the computer is configured to determine, for each vehicle, whether the filter is clogged based on a differential pressure between an upstream side and a downstream side of the exhaust gas control device in the exhaust passage.