GB2467164A - Exhaust treatment warning system - Google Patents

Exhaust treatment warning system Download PDF

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Publication number
GB2467164A
GB2467164A GB0901238A GB0901238A GB2467164A GB 2467164 A GB2467164 A GB 2467164A GB 0901238 A GB0901238 A GB 0901238A GB 0901238 A GB0901238 A GB 0901238A GB 2467164 A GB2467164 A GB 2467164A
Authority
GB
United Kingdom
Prior art keywords
treatment
warning
exhaust
volume
tank
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
GB0901238A
Other versions
GB0901238D0 (en
Inventor
Gabriel Menier
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AGCO SA
Original Assignee
AGCO SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by AGCO SA filed Critical AGCO SA
Priority to GB0901238A priority Critical patent/GB2467164A/en
Publication of GB0901238D0 publication Critical patent/GB0901238D0/en
Publication of GB2467164A publication Critical patent/GB2467164A/en
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/86—Catalytic processes
    • B01D53/90—Injecting reactants
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
    • B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N11/00—Monitoring or diagnostic devices for exhaust-gas treatment apparatus, e.g. for catalytic activity
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
    • F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
    • F01N3/2066—Selective catalytic reduction [SCR]
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N9/00—Electrical control of exhaust gas treating apparatus
    • 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
    • F02D41/021—Introducing corrections for particular conditions exterior to the engine
    • F02D41/0235—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
    • G01F23/80—Arrangements for signal processing
    • G01F23/802—Particular electronic circuits for digital processing equipment
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2610/00—Adding substances to exhaust gases
    • F01N2610/14—Arrangements for the supply of substances, e.g. conduits
    • F01N2610/1406—Storage means for substances, e.g. tanks or reservoirs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2900/00—Details of electrical control or of the monitoring of the exhaust gas treating apparatus
    • F01N2900/06—Parameters used for exhaust control or diagnosing
    • F01N2900/18—Parameters used for exhaust control or diagnosing said parameters being related to the system for adding a substance into the exhaust
    • F01N2900/1806—Properties of reducing agent or dosing system
    • F01N2900/1814—Tank level
    • 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
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
    • 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
    • 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
    • Y02T10/40—Engine management systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Biomedical Technology (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • General Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Toxicology (AREA)
  • Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • Exhaust Gas After Treatment (AREA)

Abstract

A vehicle (10) fitted with an internal combustion engine (12), exhaust treatment apparatus (24), a treatment storage tank (26), and a fuel tank (14) is provided. A warning system comprises means (15,27) to measure the volume of fluid present in each of the treatment storage tank and the fuel tank. A user interface (34,36) provides a warning to the driver when the measured volume of treatment is insufficient to treat the exhaust generated by combustion of the remaining fuel.

Description

EXHAUST TREATMENT WARNING SYSTEM
The invention relates to a vehicle comprising an internal combustion engine and exhaust treatment apparatus, a treatment storage tank and a fuel tank.
In response to modern legislation which seeks to reduce pollution exhausted by vehicles, diesel engines are fitted with exhaust treatment apparatus which injects a reducing agent into the exhaust stream of an internal combustion engine. The agent is mixed with the exhaust gases and, within a catalytic converter, a reaction takes place to reduce harmful nitrous oxides
for example.
The exhaust treatment apparatus, therefore, requires a reservoir for the storage of the treatment. This treatment storage tank is typically filled up at the start of a working day or when the fuel tank is filled. Each of the fuel tank and the treatment storage tank have an associated level gauge which is viewable by the driver. So as to avoid the risk of running out of treatment, it is common practise to fill the treatment storage tank more often than is required which results in an unnecessary waste of time.
It is an object of the invention to provide an improved system which optimises the routine of filling the treatment storage tank.
In accordance with the invention there is provided a warning system for a vehicle fitted with an internal combustion engine, exhaust treatment apparatus comprising a treatment storage tank, and a fuel tank, the system comprising means to measure the volume of fluid present in each of the treatment storage tank and the fuel tank, and a user interface which provides a warning to the driver when the measured volume of treatment is insufficient to treat the exhaust generated by combustion of the remaining fuel.
The invention involves the recognition that filling of the treatment storage tank is not always necessary at the time of filling the fuel tank. Depending on its size, the treatment storage tank can hold enough fluid to treat the exhaust generated by combustion of several tanks of fuel.
Therefore, to avoid unnecessary filling of the treatment storage tank, a warning system is provided in accordance with the invention which utilizes the measured levels in the respective tanks to determine whether there is sufficient treatment available to last for the duration corresponding to the fuel present in the fuel tank. Advantageously, the driver is automatically alerted when he needs to refill the treatment storage tank before using all of the fuel present in the fuel tank. This avoids unnecessary filling of the treatment storage tank thus saving time.
Although it is envisage that in most cases the quantity of treatment required to treat the exhaust generated by combustion of the remaining fuel can be determined by a directly proportional relationship therebetween, a more complex algoritlrni may be employed which takes account of predicted work patterns for example.
In one preferred embodiment, the system calculates the volume of treatment required upon starting of the engine. Advantageously, this gives immediate notice to the driver whether they need to add further treatment before refilling the fuel tank, whilst not demanding continuous checking by the system.
The warning provided to the driver may comprise an audible warning from a buzzer or a bleeper for example. Alternatively, or in addition to, the warning may comprise a visual warning. Such visual warning may take the form of a display message on a display screen or an indicator such as a red LED. In the latter case, a further indicator light of a different colour (e.g. green) may be provided when there is sufficient treatment to treat the exhaust generated by combustion of the remaining fuel.
Further advantages of the present invention will become apparent from the following description of a specific embodiment with reference to the appended drawing in which:-Figure 1 is a schematic illustration of a warning system in accordance with the present invention.
With reference to the drawing, a vehicle, designated generally at 10, comprises a diesel engine 12 and a diesel tank 14. It should be appreciated that the vehicle 10 may be any vehicle fitted with an internal combustion engine. However the invention is particularly applicable to diesel powered vehicles especially agricultural vehicles which employ selective catalytic reduction to reduce harmful emissions in the exhaust gas stream.
The level 14a of diesel in diesel tank 14 is measured by a level sensor 15 of known constmction. Diesel is delivered to engine 12 by fuel line 16.
Ambient air, referenced at 17, is drawn into the engine 12 via an air filter 18 of known construction. Combustion of the diesel and air takes place within engine 12, the exhaust gases from which are conveyed into a exhaust filter 20. The filtered gases are then conveyed by ducting 22 into a catalytic converter unit 24.
The vehicle 10 further comprises a urea storage tank 26 which stores a solution of urea. The level 26a of urea is measured by a level sensor 27 which is of a similar design to that of level sensor 15. The urea solution serves as a treatment for the exhaust gases to aid in the reduction of harmful emissions.
The urea is conveyed by a ducting 28 into the catalytic converter 24 in which the exhaust gases and urea fluid are mixed and reacted as per known selective catalytic reduction processes. The treated gases are exhausted to the atmosphere via exhaust pipe 30.
The sensed levels 14a,26a are communicated to a controller unit 32 via wired links 33.
Alternatively, wired links 33 may be replaced by wireless links using Bluetooth technology
for example.
Controller unit 32 includes electronic processing means and a user interface. The processing means (not shown) calculates the volume of treatment fluid required to treat the exhaust generated by the combustion of the volume of diesel remaining in tank 14.
In a first stage, the volume of diesel Vd in tank 14 is determined using sensed level 14a together with parameters which represent the dimensions of tank 14. These parameters may be fed into the controller unit 32 during assembly of the vehicle for example. Alternatively, they may be entered manually upon request by the controller. It will be appreciated that the level I 4a is not necessarily directly proportional to the remaining volume of diesel Vd as it is quite common for the profile of diesel tank 14 to be irregular to conform with the available space on the vehicle 10.
In a second stage, the controller unit 32 calculates the required volume of treatment fluid to treat the exhaust generated by combustion of the remaining diesel Vd using a predetermined algorithm. This calculation may be based on a simple directly proportional relationship. In this example, one unit of treatment fluid is sufficient to treat the exhaust generated by combustion of five units of diesel. Therefore, if 100 litres of diesel remains in tank 14 then a minimum of 2 litres of urea solution is required in tank 26.
The user interface of controller unit 32 includes a buzzer 34 and indicator light 36. In the event that the level 26a falls below the required level, controller 32 activates buzzer 34 and indicator light 36 to warn the driver that the volume of treatment is insufficient to treat the exhaust generated by the combustion of the remaining diesel. In this example, buzzer 34 sounds for a period of S seconds upon start-up of the engine whilst indictor light 36 remains permanently lit until the level 26a returns to a sufficient level.
It should be appreciated that the highly schematic nature of Figure 1 merely represents the basic nature of the user interface of controller 32. For example, indicator light 36 may be replaced by a green LED and a red LED, the latter providing the necessary warning.
It will be appreciated that the warning will typically be activated after filling of diesel tank 14 wherein the urea solution to diesel ratio shifts to an insufficiently low level. However, that does not preclude the activation of the warning during normal operation of the vehicle caused, for example, by a non-linear relationship between urea solution and diesel consumption.
Moreover, the system need only perform a check for sufficient treatment level, and provide the necessary warning, upon starting up of the engine. However, it is envisaged that this process can be carried out periodically or even continuously without deviating from the scope of the invention.
From reading the present disclosure, other modification will be apparent to persons skilled in the art. Such modifications may involve other features which are already known in the field of exhaust treatment systems and component parts therefore and which may be used instead of or in addition to features already described herein.

Claims (7)

  1. CLAIMS1. A warning system for a vehicle fitted with an internal combustion engine, exhaust treatment apparatus comprising a treatment storage tank, and a fuel tank, the system comprising means to measure the volume of fluid present in each of the treatment storage tank and the thel tank, and a user interface which provides a warning to the driver when the measured volume of treatment is insufficient to treat the exhaust generated by combustion of the remaining the!.
  2. 2. A system according to Claim 1, which calculates the volume of treatment required to treat the exhaust generated by combustion of the remaining fuel using a predetermined algorithm.
  3. 3. A system according to Claim 2, wherein said volume of treatment required is calculated in response to starting of the engine.
  4. 4. A system according to Claim 1, 2 or 3, wherein said warning comprises an audible warning.
  5. 5. A system according to any preceding claim, wherein said warning comprises a visual warning.
  6. 6. A system according to Claim 5, wherein said visual warning comprises a displayed message on a display screen.
  7. 7. A system according to Claim 5, wherein said visual warning comprises an indicator light, wherein a further indicator light of a different colour is lit when is sufficient to treat the exhaust generated by combustion of the remaining thel.
GB0901238A 2009-01-27 2009-01-27 Exhaust treatment warning system Withdrawn GB2467164A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0901238A GB2467164A (en) 2009-01-27 2009-01-27 Exhaust treatment warning system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0901238A GB2467164A (en) 2009-01-27 2009-01-27 Exhaust treatment warning system

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GB2467164A true GB2467164A (en) 2010-07-28

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014108619A1 (en) * 2013-01-14 2014-07-17 Peugeot Citroen Automobiles Sa Method for monitoring the nitrogen oxide decontamination in a motor vehicle
FR3007793A1 (en) * 2013-07-01 2015-01-02 Peugeot Citroen Automobiles Sa EXHAUST LINE FOR DEPOLLUTING EXHAUST GAS ACCORDING TO TWO OPERATING MODES
FR3033887A1 (en) * 2015-03-19 2016-09-23 Peugeot Citroen Automobiles Sa FUEL AND REDUCING FILLER LEVEL INFORMATION SYSTEM FOR MOTOR VEHICLE
CN110987113A (en) * 2018-10-02 2020-04-10 通用汽车环球科技运作有限责任公司 Fuel level display filtering algorithm adjustment to prevent display of fuel depletion on meter

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001038704A1 (en) * 1999-11-24 2001-05-31 Caterpillar Inc. Emissions diagnostic system
GB2423375A (en) * 2005-02-17 2006-08-23 Denso Corp Control of consumption of a material in a vehicle between supply points
US20070277508A1 (en) * 2006-05-30 2007-12-06 Hendrickson Brent D Method of monitoring a dosing agent supply for treating exhaust
WO2009001195A1 (en) * 2007-06-22 2008-12-31 Toyota Jidosha Kabushiki Kaisha Driving support method for vehicle and driving support system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001038704A1 (en) * 1999-11-24 2001-05-31 Caterpillar Inc. Emissions diagnostic system
GB2423375A (en) * 2005-02-17 2006-08-23 Denso Corp Control of consumption of a material in a vehicle between supply points
US20070277508A1 (en) * 2006-05-30 2007-12-06 Hendrickson Brent D Method of monitoring a dosing agent supply for treating exhaust
WO2009001195A1 (en) * 2007-06-22 2008-12-31 Toyota Jidosha Kabushiki Kaisha Driving support method for vehicle and driving support system

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014108619A1 (en) * 2013-01-14 2014-07-17 Peugeot Citroen Automobiles Sa Method for monitoring the nitrogen oxide decontamination in a motor vehicle
FR3000987A1 (en) * 2013-01-14 2014-07-18 Peugeot Citroen Automobiles Sa PROCESS FOR MONITORING THE DETERMINATION OF NITROGEN OXIDES IN A MOTOR VEHICLE
FR3007793A1 (en) * 2013-07-01 2015-01-02 Peugeot Citroen Automobiles Sa EXHAUST LINE FOR DEPOLLUTING EXHAUST GAS ACCORDING TO TWO OPERATING MODES
FR3033887A1 (en) * 2015-03-19 2016-09-23 Peugeot Citroen Automobiles Sa FUEL AND REDUCING FILLER LEVEL INFORMATION SYSTEM FOR MOTOR VEHICLE
CN110987113A (en) * 2018-10-02 2020-04-10 通用汽车环球科技运作有限责任公司 Fuel level display filtering algorithm adjustment to prevent display of fuel depletion on meter
CN110987113B (en) * 2018-10-02 2021-07-16 通用汽车环球科技运作有限责任公司 Fuel level display filtering algorithm adjustment to prevent display of fuel depletion on meter

Also Published As

Publication number Publication date
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