CN108060993A - For controlling the method that the storage tank for fuel tank is divulged information by limiting rinsing quality stream - Google Patents

For controlling the method that the storage tank for fuel tank is divulged information by limiting rinsing quality stream Download PDF

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Publication number
CN108060993A
CN108060993A CN201711084971.9A CN201711084971A CN108060993A CN 108060993 A CN108060993 A CN 108060993A CN 201711084971 A CN201711084971 A CN 201711084971A CN 108060993 A CN108060993 A CN 108060993A
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China
Prior art keywords
maximum
quality stream
load
carbon filter
rinsing quality
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Granted
Application number
CN201711084971.9A
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Chinese (zh)
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CN108060993B (en
Inventor
J.克内希特
T.赫格斯
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Robert Bosch GmbH
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Robert Bosch GmbH
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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
    • F02M25/022—Adding fuel and water emulsion, water or steam
    • F02M25/0227—Control aspects; Arrangement of sensors; Diagnostics; Actuators
    • 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
    • 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
    • F02D41/0025—Controlling engines characterised by use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
    • F02D41/003—Adding fuel vapours, e.g. drawn from engine fuel reservoir
    • F02D41/0032—Controlling the purging of the canister as a function of the engine operating conditions
    • F02D41/004—Control of the valve or purge actuator, e.g. duty cycle, closed loop control of position
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

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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)

Abstract

The present invention relates to a kind of for controlling the method that the storage tank for fuel tank is divulged information, the fuel tank is connected via at least one pipeline with internal combustion engine, and at least one active carbon filter and storage tank ventilation valve are provided at least one pipeline.The described method includes the following steps：It calculates first（110）Pass through the rinsing quality stream of pipeline（q）With the load of active carbon filter（mHC）Product（Π）；Then by rinsing quality stream（q）And load（mHC）Product（Π）With threshold value（S）Compare（111）.When rinsing quality stream（q）And load（mHC）Product（Π）Less than the threshold value（S）When, reduce（112）Maximum rinsing quality stream（qIt is maximum）.

Description

For what is divulged information by limiting rinsing quality stream to control the storage tank for fuel tank Method
Technical field
It is used to control the side that the storage tank for fuel tank is divulged information by limiting rinsing quality stream the present invention relates to a kind of Method.In addition, the present invention relates to a kind of computer program and a kind of machine readable storage medium, the computer program when its Implement each step of the method when being run on calculator, the machine readable storage medium stores the computer program. Finally, the present invention relates to a kind of electronic controller, the electronic controller sets to implement the method according to the invention.
Background technology
In order to follow discharge vaporization boundary value, the fuel tank of motor vehicle has storage tank ventilating system.The storage tank ventage System include adsorbing the active carbon filter of fuel vapour that is leaked from the air pipeline of fuel tank and it is at least one will The pipeline of the air inlet pipe of the active carbon filter and internal combustion engine connection.Storage tank ventilation valve is disposed in the pipeline.
The fuel vapour leaked from fuel tank is adsorbed in active carbon filter, so as to only by clean air energy Enough enter in air.In order to always again make regenerating active carbon, the fuel vapour adsorbed is guided in regeneration is run Into the air inlet pipe of internal combustion engine.There are negative pressure in the air inlet pipe, thus when storage tank ventilation valve is opened also in the pipeline And negative pressure is generated in active carbon filter.The air from ambient enviroment is flowed by activated carbon in air inlet pipe as a result,. The air desorption accumulation hydrocarbon and by the hydrocarbon be delivered to driving burning.Storage in the pipeline Case ventilation valve carries out the recovery stream dosage, which is also referred to as " rinsing quality stream ".Typically, in the manipulation implemented at present In method, rinsing quality stream is substantially so selected so that rinsing quality stream as big as possible is directed over activated carbon filtering Device.
However, the unloading of active carbon filter is at least related with following factors：
The load of active carbon filter；
The temperature of active carbon filter；
The size of rinsing quality stream；
The type of active carbon filter；And
The temperature of rinsing quality stream.
Because typically（In addition to load）Manipulation is realized according to the state parameter of internal combustion engine, so activated carbon filters Device is not forced effectively to regenerate when rinsing quality stream is as big as possible, because the active carbon filter is for example since excessive rushes It washes quality stream and cools down, which reduce the regeneration of the active carbon filter.
The content of the invention
The present invention can be currently used for substituting rinsing quality stream as big as possible in the storage tank ventilation of fuel tank in fact（Therefore Substitute air mass flow as big as possible）Realize maximum rinsing quality（Therefore maximum nytron amount of substance is realized）.
Fuel tank is connected via at least one pipeline with internal combustion engine, and at least one is provided at least one pipeline A active carbon filter and storage tank ventilation valve.Method for storage tank to be controlled to divulge information comprises the following steps.First, in accordance with 1 shape of formula Into the product of the load of the rinsing quality stream and active carbon filter by pipeline：
（Formula 1）
In equation 1, q represents rinsing quality stream and mHCRepresent the load of active carbon filter.The product of the two symbol Π It represents.
Then by the product and threshold value comparison.If the product is less than the threshold value, thus, it is possible to draw：It is living Property carbon filter is relatively well regenerated and the load of the therefore active carbon filter is small or there is no for activated carbon The optimal regenerated condition of filter.Therefore, once the product of rinsing quality stream and load is less than the threshold value, then maximum is reduced Rinsing quality stream.Preferably, the reduction of maximum rinsing quality stream can be realized in the following way, i.e. storage tank is closed in part Ventilation valve, to reduce the flow by the storage tank ventilation valve.Thus, it is possible to ensure rinsing quality stream for active carbon filter Effective regeneration for will not be excessive.If active carbon filter and then the lasting maximum rinsing quality stream adjusted rinse, It can then realize the optimal regeneration of the active carbon filter.Another advantage is to be based on rinsing quality to the reduction for rinsing quality stream Stream and load product and be adapted to automatically with system condition.Such as in the case where temperature is low（In the case of the temperature, compared with Few nytron amount of substance is transformed into gaseous state in active carbon filter）It is automatic to occur to subtract maximum rinsing quality stream It is small, thus equally reduce aging and the pollution level of active carbon filter.
According on the one hand, the load of acquisition active carbon filter can be continued, thus, it is possible to correctly determine activity always The load of carbon filter.Therefore the product and it is considered herein that current load can constantly be redefined.In addition, activated carbon The acquired load of filter can be used in respectively reselecting described subtract when acquired load changes every time Small numerical value.
Optionally, can the reduction to maximum rinsing quality stream be cancelled according to the operating point of internal combustion engine.Especially, when not （Again）When can determine that the load of active carbon filter, the reduction to maximum rinsing quality stream can be cancelled.Typically, when storage tank leads to The share of wind the operating point for load it is reliable determine for it is too small when be such situation.This generates such knots Fruit, i.e. eliminate due to given travel operating mode and/or internal combustion engine failure and mistakenly reduce maximum this feelings of rinsing quality stream Condition.
In addition, when the load of active carbon filter（Again）During rise, maximum rinsing quality stream can be increased.It therefore ensures that Active carbon filter will not overload and will no longer absorb any hydrocarbon in worst case.Here, according to internal combustion The operating point of machine selects the increase, thus considers current driving cycle.When for example passing through parallel side in a short time When method interrupts rinsing quality stream, the load can for example raise.In this example, it can suitably cancel and matter is rinsed to maximum It measures the increase of stream or can only realize increase to maximum rinsing quality stream point by point.Otherwise maximum rinsing quality can be increased Stream, until the maximum rinsing quality stream is received through the maximum stream flow of the component flowed through, such as storage tank ventilation valve or pipeline It limits and cannot further improve.
The computer program sets to implement all steps of the method, especially when the computer program is being counted When being performed on calculation device or controller.The execution of the method can realize in traditional electronic controller, without to this into Change in row structure.For this purpose, the computer program is stored on machine readable storage medium.
It obtains setting to control for fuel by being loaded into the computer program on traditional electronic controller The electronic controller of the storage tank ventilation of storage tank.
Description of the drawings
It is shown in the drawings and illustrates the embodiment of the present invention in the following description.In attached drawing：
Fig. 1 shows storage tank ventilating system, which can be controlled using the embodiment of the method according to the invention System；And
Fig. 2 shows a kind of flow chart of embodiment of the method according to the invention.
Specific embodiment
The storage tank ventilating system of vehicle is schematically shown in Fig. 1, and use is according to this in the storage tank ventilating system The method of invention.There are fuel in fuel tank 10.Gaseous hydrocarbon, hydrocarbonization are formed above liquid fuel It closes object and is delivered to active carbon filter 20 via air pipeline 11.Active carbon filter 20 is absorbed as load mHCIt is applied to activity The hydrocarbon of carbon filter.Regeneration pipeline 30 passes to internal combustion engine 50 from active carbon filter 20, and rinsing quality stream q flows through institute Regeneration pipeline is stated, which adsorbs the hydrocarbon of the gas form come out from active carbon filter 20 and should Hydrocarbon is transferred to internal combustion engine 50.Active carbon filter 20 is reproduced as a result,.Storage tank is provided in regeneration pipeline 30 to lead to The sky that air-valve 40, the rinsing quality stream q of storage tank ventilation valve regulation hydrocarbon gas and adjusting pass through regeneration pipeline 30 Gas.Internal combustion engine 50 has multiple cylinders 60 being connected with a common air inlet pipe 51.Air passes through air inlet pipe from ambient enviroment 51 are inhaled into, and the air passes through air filter 53, charger-air cooler 54 and air throttle 52, and then the air enters Into the unshowned injection valve of cylinder 60.Hydrocarbon gas are eventually delivered to internal combustion engine 50, then the nytron Object gas burns there.Additionally, lambda probe 70 is disposed in gas exhaust piping 55 in 50 downstream of internal combustion engine, which determines The oxygen content of exhaust gas and corresponding signal is passed into electronic controller 80.In addition, the electronic controller 80 is divulged information with storage tank Valve 40 connects and controls the storage tank ventilation valve.
Fig. 2 shows a kind of flow chart of embodiment of the method according to the invention.In the first step, determine that 100 is logical Cross the rinsing quality stream q of regeneration pipeline 30.The load m of active carbon filter 20 should be determined as next stepHC.Therefore first It is checked in inquiry 101, load mHCWhether it is known.It is not usually such case during the first of the method.It is living The load m of property carbon filter 20HCDue to absorbing hydrocarbon from fuel tank 10 and since desorption is attached to rinsing quality Persistently change in stream q, thus must constantly redefine the load.Therefore, if load mHCIt is not known, then obtains 102 loads.However, if the 102 load m for determining active carbon filter 20 in other words cannot be obtainedHC, then terminate described in 103 Method.Furthermore it is possible to 103 the methods are terminated according to the operating point of internal combustion engine 50.Cancel in this case and maximum is rinsed Quality stream qIt is maximumIn the method may carry out reduction 112（As described below）.
As not only rinsing quality stream q but also load mHCIt has been be determined that, then calculate both 110 product Π.Comparing In 111 by product Π compared with threshold value S.If product Π is less than threshold value S, thus, it is possible to draw：Activated carbon filters The load m of device 20HCIt is very small or rinse there is no the optimal regenerated condition for active carbon filter 20 and especially Quality stream q.In this case, 112 maximum rinsing quality stream q are reducedIt is maximum, mode is：Storage tank ventilation valve 40 is protected by manipulating Hold part closing.The numerical value of the reduction 112 is according to acquired load mHCTo select.Then, the method is to inquire that 101 is negative Lotus mHCWhether it is known and repeats.The method is repeated in this way, to maximum rinsing quality stream qIt is maximumReduction 112 it is continuous Ground and acquired load mHCIt is adapted to and the numerical value of the reduction 112 correspondingly selects again when running through the method every time It selects.
If the product Π is at this time by maximum rinsing quality stream qIt is maximumReduction 112 determine ground on threshold value S, then with Maximum rinsing quality stream qIt is maximumRun the ventilation of 113 storage tanks.During further, 120 load m are checkedHCWhether raise.This Such as it can occur due to the service condition of variation or based on parallel method.If load mHCRise, then correspondingly increase 121 maximum rinsing quality stream qIt is maximum.If necessary, which can carry out until maximum rinsing quality stream qIt is maximumOnly also led to It crosses the maximum stream flow of storage tank ventilation valve 40 or is subject to limiting for the diameter of regeneration pipeline 30.Otherwise continue with maximum rinsing quality stream qIt is maximumRun the ventilation of 122 storage tanks.In both cases, the method is to inquire 101 load mHCWhether it is known and repeats.

Claims (9)

1. for controlling for fuel tank（10）Storage tank ventilation method, the fuel tank is via at least one pipeline （30）With internal combustion engine（50）Connection, at least one active carbon filter is provided at least one pipeline（20）And storage tank Ventilation valve（40）, the described method includes the following steps：
- calculate（110）Pass through pipeline（30）Rinsing quality stream（q）And active carbon filter（20）Load（mHC）Product （Π）；
- by rinsing quality stream（q）And load（mHC）Product（Π）With threshold value（S）Compare（111）；
- when rinsing quality stream（q）And load（mHC）Product（Π）Less than the threshold value（S）When, reduce（112）Maximum rinses matter Amount stream（qIt is maximum）.
2. according to the method described in claim 1, it is characterized in that, lasting obtain（102）Active carbon filter（20）Load （mHC）.
3. according to the method described in claim 2, it is characterized in that, according to active carbon filter（20）Acquired load （mHC）It correspondingly reselects to maximum rinsing quality stream（qIt is maximum）Reduction（112）Numerical value.
4. the method according to one of the claims, which is characterized in that according to internal combustion engine（50）Operating point cancel （103）To maximum rinsing quality stream（qIt is maximum）Reduction（112）.
5. it according to the method described in claim 4, it is characterized in that, ought not can determine that（102）Active carbon filter（20）It is negative Lotus（mHC）When, cancel（103）To maximum rinsing quality stream（qIt is maximum）Reduction（112）.
6. the method according to one of the claims, which is characterized in that work as active carbon filter（20）Load（mHC） During rise, according to internal combustion engine（50）Operating point increase（121）Maximum rinsing quality stream（qIt is maximum）.
7. computer program sets to implement each step of the method according to one of claim 1 to 6.
8. machine readable storage medium is stored with calculating according to claim 7 on the machine readable storage medium Machine program.
9. electronic controller（80）, set to control to fire by according to the method described in one of claim 1 to 6 Expect storage tank（10）Storage tank ventilation.
CN201711084971.9A 2016-11-08 2017-11-07 Method for controlling tank ventilation for a fuel tank by limiting the flushing mass flow Active CN108060993B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016221907.3 2016-11-08
DE102016221907.3A DE102016221907B3 (en) 2016-11-08 2016-11-08 A method of controlling a tank vent for a fuel tank by limiting a purge mass flow

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CN108060993B CN108060993B (en) 2021-10-22

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110594050A (en) * 2018-06-13 2019-12-20 罗伯特·博世有限公司 Method for monitoring a line in a tank ventilation system
CN108060993B (en) * 2016-11-08 2021-10-22 罗伯特·博世有限公司 Method for controlling tank ventilation for a fuel tank by limiting the flushing mass flow

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018111116B4 (en) 2018-05-09 2020-06-18 Eagle Actuator Components Gmbh & Co. Kg Arrangement for regenerating an activated carbon filter
DE102022210068A1 (en) 2022-09-23 2024-03-28 Robert Bosch Gesellschaft mit beschränkter Haftung Method and device for controlling an internal combustion engine with a tank for fuel

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US6349707B1 (en) * 1999-08-31 2002-02-26 Siemens Aktiengesellschaft Method for regenerating an activated carbon filter loaded with hydrocarbons
CN101410606A (en) * 2005-12-16 2009-04-15 欧陆汽车有限责任公司 Method for regulating a combustion process of an internal combustion engine with exhaust-gas recirculation
WO2009071382A1 (en) * 2007-12-04 2009-06-11 Robert Bosch Gmbh Method for regenerating an adsorption filter
US20160061153A1 (en) * 2014-08-29 2016-03-03 GM Global Technology Operations LLC System and method for diagnosing a dual path purge system using a hydrocarbon sensor and for diagnosing a hydrocarbon sensor in a single path purge system or a dual path purge system
US20190345898A1 (en) * 2018-05-09 2019-11-14 Eagle Actuator Components Gmbh & Co. Kg Arrangement for regenerating an activated carbon filter

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US7150271B2 (en) 2004-12-20 2006-12-19 General Motors Corporation Vapor assisted cold start control algorithm
DE102016221907B3 (en) * 2016-11-08 2018-04-19 Robert Bosch Gmbh A method of controlling a tank vent for a fuel tank by limiting a purge mass flow

Patent Citations (5)

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Publication number Priority date Publication date Assignee Title
US6349707B1 (en) * 1999-08-31 2002-02-26 Siemens Aktiengesellschaft Method for regenerating an activated carbon filter loaded with hydrocarbons
CN101410606A (en) * 2005-12-16 2009-04-15 欧陆汽车有限责任公司 Method for regulating a combustion process of an internal combustion engine with exhaust-gas recirculation
WO2009071382A1 (en) * 2007-12-04 2009-06-11 Robert Bosch Gmbh Method for regenerating an adsorption filter
US20160061153A1 (en) * 2014-08-29 2016-03-03 GM Global Technology Operations LLC System and method for diagnosing a dual path purge system using a hydrocarbon sensor and for diagnosing a hydrocarbon sensor in a single path purge system or a dual path purge system
US20190345898A1 (en) * 2018-05-09 2019-11-14 Eagle Actuator Components Gmbh & Co. Kg Arrangement for regenerating an activated carbon filter

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108060993B (en) * 2016-11-08 2021-10-22 罗伯特·博世有限公司 Method for controlling tank ventilation for a fuel tank by limiting the flushing mass flow
CN110594050A (en) * 2018-06-13 2019-12-20 罗伯特·博世有限公司 Method for monitoring a line in a tank ventilation system
CN110594050B (en) * 2018-06-13 2023-05-05 罗伯特·博世有限公司 Method for monitoring a line in a tank ventilation system

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