Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
  • F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
  • F02B37/12—Control of the pumps
  • F02B37/16—Control of the pumps by bypassing charging air
  • F02B37/164—Control of the pumps by bypassing charging air the bypassed air being used in an auxiliary apparatus, e.g. in an air turbine
• • 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
  • F02M25/089—Layout of the fuel vapour installation
• • 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
  • B01D53/02—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 by adsorption, e.g. preparative gas chromatography
  • B01D53/04—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 by adsorption, e.g. preparative gas chromatography with stationary adsorbents
  • B01D53/0407—Constructional details of adsorbing systems
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
  • F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
  • F02B37/12—Control of the pumps
  • F02B37/16—Control of the pumps by bypassing charging air
• • 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
  • F02M25/0872—Details of the fuel vapour pipes or conduits
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01D—SEPARATION
  • B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
  • B01D2253/10—Inorganic adsorbents
  • B01D2253/102—Carbon
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01D—SEPARATION
  • B01D2257/00—Components to be removed
  • B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
  • B01D2257/702—Hydrocarbons
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01D—SEPARATION
  • B01D2259/00—Type of treatment
  • B01D2259/45—Gas separation or purification devices adapted for specific applications
  • B01D2259/4516—Gas separation or purification devices adapted for specific applications for fuel vapour recovery systems
• • 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
  • F02M25/0818—Judging failure of purge control system having means for pressurising the evaporative emission space
• • 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

Definitions

• the invention relates to a supercharged internal combustion engine with the features of the preamble of patent claim 1.
• Today's automobiles include an internal combustion engine operated with a fuel (such as gasoline or diesel) stored in a tank. Due to the temperatures and pressures prevailing in the tank, gases are produced by evaporation which may not or only to a limited extent be released into the surroundings of the vehicle. On the one hand, legally prescribed limit values exist for evaporative emissions, which are determined in specified cycles; on the other hand, discharged gas containing hydrocarbons (HC) leads to a noticeable smell of fuel. This smell is perceived by customers as disturbing and thus leads to customer complaints. Furthermore, in extreme cases, fire can also be caused by escaping gas or liquid fuel.
• a fuel such as gasoline or diesel
• the purge rate must be higher on average than the amount of gas that is produced in the tank.
• the rinsing of the activated carbon filter is carried out by supplying the tank ventilation gas into the air supply of the internal combustion engine.
• the fuel present in this gas is taken into account in the mixture precontrol of the control unit of the internal combustion engine, so that the fuel gases produced in the tank are incinerated without consumption and emissions.
• a purging gradient pressure gradient
• This required purging gradient is reduced by negative pressure in the air supply of the internal combustion engine by means of a throttle element, such. B. a throttle valve, relative to the ambient pressure of the vehicle generated.
• the regulation of the venting via a usually electrically controlled valve.
• diverter valves are used in the prior art. These are integrated in the region of the intake between the compressor and the throttle of the engine to rapidly reduce the existing pressure in the high pressure section of the intake at load reduction in the direction of low pressure side of the intake tract, d. H. the high-pressure side of the compressor is gas-conducting connected to the low-pressure side of the compressor.
• diverter valves require additional hardware that generates additional costs during the development and assembly of the internal combustion engines.
• additional components that they fail during operation and consequently can result in loss of comfort or consequential damage to other components.
• DE 10 2011 084 539 B3 proposes a turbocharger with a compressor whose housing contains a low-pressure inlet area connected to a low-pressure inlet and a high-pressure outlet area connected to a high-pressure outlet.
• the low pressure input portion is connected to the low pressure side of a suction pipe
• the high pressure output portion is connected to the high pressure side of the suction pipe.
• the compressor has a Venturi nozzle disposed between the high pressure exit region and the low pressure input region and further connected to an activated carbon filter for venting thereof.
• the compressor has a diverter valve to which the Venturi nozzle is connected and the venting of the activated carbon filter is carried out with the diverter valve open.
• a disadvantage of this known design is that a tank ventilation requires a significantly smaller flow cross-section than a diverter valve.
• Object of the present invention is to show a measure how the above-mentioned disadvantages can be avoided, while reducing the components used.
• the double gas supply and gas discharge lines to and from the valves, the second drive cable for the valves and a second component holder for a second housing account for. This results in advantages in terms of cost, space and weight, without functional disadvantages.
• the diverter valve and the tank-venting valve according to claim 2 are preferably arranged in a common housing to save Bauraüm.
• the tank-venting valve according to claim 3 preferably comprises a known and robust venturi nozzle as well as a likewise known flow-expansion valve with at least two flow cross-sectional extension stages.
• the fuel tank via the valve according to claim 4 is connected in gaseous form with the intake tract, whereby a purging of the activated carbon filter is possible when the internal combustion engine is operated in non-supercharged operation (suction).
• a first throttle element is provided, with which the tank ventilation valve can be shut off in order to minimize leakage losses and thus power losses of the internal combustion engine.
• Fig. 1 shows schematically an internal combustion engine according to the invention.
• Fig. 1 shows schematically an inventive, supercharged internal combustion engine 1 with a suction tract 2, in which a compressor 3, such. B. a compressor of an exhaust gas turbocharger or a compressor is arranged. Furthermore, a throttle element 4, for example a throttle valve, is arranged in the intake tract 2 in the intake tract between the compressor 3 and the internal combustion engine 1. Low pressure side of the intake tract 2 with a first line 5 and the high pressure side with a second line 6 between the compressor 3 and the throttle element 4 via a diverter valve 7 gasmarkedd connected, the diverter valve 7 should also be completely closed.
• a compressor 3 such. B. a compressor of an exhaust gas turbocharger or a compressor
• a throttle element 4 for example a throttle valve
• a fuel tank 8 is further provided with an activated carbon filter 16, which is connected via a valve 9 with a tank vent valve 10 gas-conducting.
• the suction tract 2 is low-pressure side connected to a third line 11 and high pressure side with a fourth line 12 between the compressor 3 and the throttle element 4 via the tank vent valve 10 gas-conducting.
• the diverter valve 7 and the tank-venting valve 10 are arranged fluidically parallel to each other and the first line 5 and the third line 11 and the second line 6 and the fourth line 12 are at least partially the same lines.
• the diverter valve 7 and the tank vent valve 10 are arranged in a common housing 13 in order to save installation space.
• the tank vent valve 10 includes a venturi 14 and a flow expansion valve 15.
• the fuel tank 8 and the activated carbon filter 16 can be connected to the intake tract 2 via the valve 9 in gas-carrying fashion.
• a first throttle element 18 is provided in the first line 5, with which the tank ventilation valve 10 can be shut off.
• the throttle element 18 may also be arranged in the second conduit 6, as shown in FIG. 1.
• the double gas supply and gas discharge lines 5, 6, 11, 12 account for and from the valves 7, 10 the second drive cable for the valves 7, 10 and a second component holder for a second housing.

Landscapes

• Engineering & Computer Science (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• General Chemical & Material Sciences (AREA)
• Analytical Chemistry (AREA)
• Oil, Petroleum & Natural Gas (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Supplying Secondary Fuel Or The Like To Fuel, Air Or Fuel-Air Mixtures (AREA)
• Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
• Supercharger (AREA)
• Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)

Applications Claiming Priority (2)

Publications (1)

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ID=53039431

Family Applications (1)

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• 2014
  • 2014-06-03 DE DE102014210508.0A patent/DE102014210508A1/de not_active Withdrawn
• 2015
  • 2015-05-04 EP EP15719722.9A patent/EP3152433A1/de not_active Withdrawn
  • 2015-05-04 WO PCT/EP2015/059671 patent/WO2015185303A1/de active Application Filing
  • 2015-05-04 CN CN201580009913.2A patent/CN106068369B/zh active Active
• 2016
  • 2016-11-22 US US15/358,271 patent/US10100784B2/en active Active

Non-Patent Citations (2)

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