WO2021013887A1 - Verfahren und vorrichtung zur diagnose eines kraftstoffverdunstungs-rückhaltesystems einer verbrennungskraftmaschine - Google Patents
Verfahren und vorrichtung zur diagnose eines kraftstoffverdunstungs-rückhaltesystems einer verbrennungskraftmaschine Download PDFInfo
- Publication number
- WO2021013887A1 WO2021013887A1 PCT/EP2020/070676 EP2020070676W WO2021013887A1 WO 2021013887 A1 WO2021013887 A1 WO 2021013887A1 EP 2020070676 W EP2020070676 W EP 2020070676W WO 2021013887 A1 WO2021013887 A1 WO 2021013887A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- pressure
- tank
- temperature
- engine control
- fuel
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M25/00—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture
- F02M25/08—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture adding fuel vapours drawn from engine fuel reservoir
- F02M25/0809—Judging failure of purge control system
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- 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
- B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
- B60K15/03—Fuel tanks
- B60K15/035—Fuel tanks characterised by venting means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/04—Introducing corrections for particular operating conditions
- F02D41/042—Introducing corrections for particular operating conditions for stopping the engine
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M25/00—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture
- F02M25/08—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture adding fuel vapours drawn from engine fuel reservoir
- F02M25/0809—Judging failure of purge control system
- F02M25/0827—Judging failure of purge control system by monitoring engine running conditions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- 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
- B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
- B60K15/03—Fuel tanks
- B60K2015/0321—Fuel tanks characterised by special sensors, the mounting thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- 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
- B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
- B60K15/03—Fuel tanks
- B60K2015/03236—Fuel tanks characterised by special filters, the mounting thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- 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
- B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
- B60K15/03—Fuel tanks
- B60K15/035—Fuel tanks characterised by venting means
- B60K15/03504—Fuel tanks characterised by venting means adapted to avoid loss of fuel or fuel vapour, e.g. with vapour recovery systems
- B60K2015/03514—Fuel tanks characterised by venting means adapted to avoid loss of fuel or fuel vapour, e.g. with vapour recovery systems with vapor recovery means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/04—Introducing corrections for particular operating conditions
- F02D41/06—Introducing corrections for particular operating conditions for engine starting or warming up
- F02D41/062—Introducing corrections for particular operating conditions for engine starting or warming up for starting
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M25/00—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture
- F02M25/08—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture adding fuel vapours drawn from engine fuel reservoir
- F02M25/0836—Arrangement of valves controlling the admission of fuel vapour to an engine, e.g. valve being disposed between fuel tank or absorption canister and intake manifold
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M25/00—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture
- F02M25/08—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture adding fuel vapours drawn from engine fuel reservoir
- F02M25/0854—Details of the absorption canister
Definitions
- the invention relates to a method and a device for diagnosing a fuel evaporation retention system of an internal combustion engine.
- Fuel evaporation retention systems usually referred to as tank ventilation devices, equipped.
- the purpose of such devices is to absorb and temporarily store fuel vapor that is formed in a fuel tank by evaporation, so that the fuel vapor cannot escape into the environment. As a storage for the fuel vapor is in the
- a fuel vapor retention filter which uses activated carbon as a storage medium, for example.
- the fuel vapor retention filter has only a limited storage capacity for fuel vapor. In order to be able to use the fuel vapor retention filter over a long period of time, it must be regenerated.
- a controllable tank ventilation valve is arranged in a line between the fuel vapor retention filter and an intake pipe of the internal combustion engine, which is opened to carry out the regeneration so that on the one hand the fuel vapors adsorbed in the fuel vapor retention filter due to the
- FIG. 1 An example of such a tank system is shown in FIG.
- the tank system shown in Figure 1 includes the following components: • a fuel tank 1;
- the resulting hydrocarbon vapors can be retained in the tank in order to subsequently control them under suitable conditions
- a tank ventilation valve 3 which can be used as a switching or linear valve
- a tank ventilation line 6 (tank area) between the fuel tank 1 and the tank shut-off valve 2;
- Hydrocarbon gases are passed from the fuel tank 1 into the activated carbon filter 9 and on to the tank ventilation valve 3;
- a tank ventilation line 8 (engine area) through which the
- Hydrocarbon gases are introduced downstream of the tank ventilation valve 3 from the activated carbon filter 9 into the air path 5 of the internal combustion engine;
- a motor control 4 which among other things
- a setpoint for the flushing flow from the activated carbon filter 9 to the air path of the internal combustion engine is determined
- predetermined flushing flow determines a PWM value for controlling the tank ventilation valve 3, 5.
- Internal combustion engine calculates the amount of fuel to be injected.
- the entire fuel evaporation system including the fuel tank up to the tank ventilation valve must be checked for leaks. There are different legal requirements regarding the smallest leak diameter to be diagnosed.
- the continuity of the tank ventilation lines downstream of the tank ventilation valve and the maintenance of the mass flow between the activated carbon filter and the point of introduction of the tank ventilation gas into the air path of the internal combustion engine must be ensured. This includes a check of the functionality of the tank ventilation valve.
- Fuel evaporation system exclusively for the tank and the filter area is for the known system shown in Figure 1 with or, if necessary, also without a tank shut-off valve through the use of leak diagnosis pumps
- leak diagnosis unit 12 (Leak diagnosis unit 12; see Figure 1) executed.
- This leak diagnosis unit 12 pressurizes the fuel evaporation system after a defined time interval after the internal combustion engine has been switched off (vehicle standstill) or generates a vacuum.
- the resulting pressure curve or the electrical power consumed by the leak diagnosis unit is used as an evaluation criterion for determining a
- Leakage diameter used is time-consuming, causes additional energy consumption to control the pumps and generates noise emissions when the vehicle is stationary.
- Fuel evaporation retention system uses a change in pressure resulting from a temperature change in a gas volume in the fuel tank at a constant tank volume over a defined time during a vehicle standstill after the internal combustion engine has been switched off,
- FIG. 2 shows a tank area of a fuel evaporation retention system
- FIG. 3 shows a diagram for pressure and temperature profiles in the diagnosis of the fuel evaporation retention system
- FIG. 4 shows a block diagram to explain a first exemplary embodiment for measurement data electronics
- FIG. 5 shows a block diagram to explain a second exemplary embodiment for measurement data electronics.
- Throttle components resulting volumes which compared to Ambient pressure level, system-related pressure differences or pressure thresholds (e.g. overpressure valves, check valves, ...) can be used.
- measured value pairs are formed from the tank temperature and the tank pressure at adjustable time intervals.
- the acquisition process of the value pairs is illustrated below with reference to FIG. 3 for a cooling process.
- the terminal 15 signal, the pressure and the temperature are plotted upwards in FIG.
- the time t is plotted to the right.
- the time interval 26 is the acquisition period.
- Reference number 27 illustrates those within FIG.
- the measuring sensor system required for detecting the pressure profile illustrated in FIG. 3 and the temperature profile illustrated in FIG. 3 has a combined pressure and temperature sensor 1 1, which under
- measurement data electronics 33 is able to communicate with control devices, for example engine control devices.
- This measurement data electronics 33 is either integrated into the housing of the pressure and temperature sensor 11 or implemented in the form of a separate component.
- FIG. 4 shows a block diagram of a first exemplary embodiment in which the aforementioned measurement data electronics are integrated into the housing of the pressure and temperature sensor 1 1 a.
- the pressure and temperature sensor 1 1 a and thus also the measurement data electronics are connected to a voltage source 22 via a voltage supply line 29.
- This voltage source 22 is an internal voltage source implemented in the form of a button cell or an external voltage source, for example the terminal 30 of the respective motor vehicle.
- the pressure and temperature sensor 1 1 a is connected to the engine controller 4 via a communication line 30.
- This communication line 30 can be a SENT line, a LIN bus, a CAN bus, a FlexRay line or an analog data line.
- FIG. 5 shows a block diagram of a second exemplary embodiment for the evaluation of pairs of measured values, in which the measured data electronics are implemented in the form of a separate component 33.
- the pressure and temperature sensor 11 is connected to the measurement data electronics 33 via a first communication line 31.
- the measurement data electronics 33 are also connected to the engine control 4 via a second communication line 32. Furthermore, the measurement data electronics 33 are via a
- Voltage supply line 29 is connected to a voltage source 22.
- This voltage source 22 is an internal voltage source implemented in the form of a button cell or an external voltage source, for example the terminal 30 of the respective motor vehicle.
- Communication lines 31 and 32 can each be a SENT line, a LIN bus, a CAN bus, a FlexRay line or an analog one
- the measurement data electronics 33 described above is designed to ensure the following functions: - A transmission of the current pressure and temperature readings to the
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Transportation (AREA)
- Supplying Secondary Fuel Or The Like To Fuel, Air Or Fuel-Air Mixtures (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020227005483A KR20220034237A (ko) | 2019-07-23 | 2020-07-22 | 내연 기관의 연료 증발 보유 시스템을 진단하기 위한 방법 및 디바이스 |
CN202080053074.5A CN114127407A (zh) | 2019-07-23 | 2020-07-22 | 用于诊断内燃机的燃料蒸发约束系统的方法和设备 |
DE112020003540.9T DE112020003540A5 (de) | 2019-07-23 | 2020-07-22 | Verfahren und Vorrichtung zur Diagnose eines Kraftstoffverdunstungs-Rückhaltesystems einer Verbrennungskraftmaschine |
US17/629,064 US11725610B2 (en) | 2019-07-23 | 2020-07-22 | Method and device for operating a fuel evaporation retention system of an internal combustion engine |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102019210900 | 2019-07-23 | ||
DE102019210900.4 | 2019-07-23 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2021013887A1 true WO2021013887A1 (de) | 2021-01-28 |
Family
ID=71784047
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2020/070676 WO2021013887A1 (de) | 2019-07-23 | 2020-07-22 | Verfahren und vorrichtung zur diagnose eines kraftstoffverdunstungs-rückhaltesystems einer verbrennungskraftmaschine |
Country Status (5)
Country | Link |
---|---|
US (1) | US11725610B2 (de) |
KR (1) | KR20220034237A (de) |
CN (1) | CN114127407A (de) |
DE (1) | DE112020003540A5 (de) |
WO (1) | WO2021013887A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2022018123A1 (de) * | 2020-07-21 | 2022-01-27 | Vitesco Technologies GmbH | Verfahren und vorrichtung zur diagnose einer verdunstungssystemleckage und einer tankentlüftungsleitung einer verbrennungskraftmaschine |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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US6321727B1 (en) * | 2000-01-27 | 2001-11-27 | General Motors Corporation | Leak detection for a vapor handling system |
US20130074583A1 (en) * | 2011-09-28 | 2013-03-28 | Continental Automotive Systems Us, Inc. | Leak detection method and system for a high pressure automotive fuel tank |
EP3409936A1 (de) * | 2017-05-31 | 2018-12-05 | Plastic Omnium Advanced Innovation and Research | Verfahren und system zur bestimmung eines lecks in einem druckbeaufschlagten brennstoffsystem |
Family Cites Families (9)
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US7255093B2 (en) * | 2003-06-30 | 2007-08-14 | Hitachi, Ltd. | Device and method for diagnosing evaporation leak, and control device of internal combustion engine |
DE102005049776A1 (de) * | 2005-10-18 | 2007-04-19 | Robert Bosch Gmbh | Verfahren zur Prüfung der Dichtheit einer Tankenlüftungsanlage |
DE102009036263B4 (de) * | 2009-08-05 | 2022-06-30 | Mercedes-Benz Group AG | Verfahren zur Dichtheitsprüfung eines Tanksystems und Tanksystem |
DE102012219048A1 (de) * | 2012-10-18 | 2014-04-24 | Robert Bosch Gmbh | Verfahren zur Überwachung der Dichtigkeit eines Kraftstofftanksystems |
US9857266B2 (en) * | 2014-02-04 | 2018-01-02 | Ford Global Technologies, Llc | Correlation based fuel tank leak detection |
US9696234B2 (en) * | 2014-07-25 | 2017-07-04 | Ford Global Technologies, Llc | Evaporative emissions testing based on historical and forecast weather data |
US10677197B2 (en) * | 2016-02-18 | 2020-06-09 | Ford Global Technologies, Llc | Evaporative emissions diagnostic during a remote start condition |
US10718282B2 (en) * | 2016-12-22 | 2020-07-21 | Ford Global Technologies, Llc | Systems and methods for intelligent vehicle evaporative emissions diagnostics |
JP6690757B1 (ja) * | 2019-04-16 | 2020-04-28 | トヨタ自動車株式会社 | 燃料蒸気排出防止システムの異常検出装置 |
-
2020
- 2020-07-22 WO PCT/EP2020/070676 patent/WO2021013887A1/de active Application Filing
- 2020-07-22 DE DE112020003540.9T patent/DE112020003540A5/de active Pending
- 2020-07-22 US US17/629,064 patent/US11725610B2/en active Active
- 2020-07-22 KR KR1020227005483A patent/KR20220034237A/ko not_active Application Discontinuation
- 2020-07-22 CN CN202080053074.5A patent/CN114127407A/zh active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6321727B1 (en) * | 2000-01-27 | 2001-11-27 | General Motors Corporation | Leak detection for a vapor handling system |
US20130074583A1 (en) * | 2011-09-28 | 2013-03-28 | Continental Automotive Systems Us, Inc. | Leak detection method and system for a high pressure automotive fuel tank |
EP3409936A1 (de) * | 2017-05-31 | 2018-12-05 | Plastic Omnium Advanced Innovation and Research | Verfahren und system zur bestimmung eines lecks in einem druckbeaufschlagten brennstoffsystem |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2022018123A1 (de) * | 2020-07-21 | 2022-01-27 | Vitesco Technologies GmbH | Verfahren und vorrichtung zur diagnose einer verdunstungssystemleckage und einer tankentlüftungsleitung einer verbrennungskraftmaschine |
Also Published As
Publication number | Publication date |
---|---|
CN114127407A (zh) | 2022-03-01 |
US20220275775A1 (en) | 2022-09-01 |
KR20220034237A (ko) | 2022-03-17 |
DE112020003540A5 (de) | 2022-04-14 |
US11725610B2 (en) | 2023-08-15 |
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