EP2388460A1 - Common-Rail-System für einen Verbrennungsmotor mit mehreren Zylinderbänken und mit unabhängig gesteuerter Kraftstoffzufuhr zu jeder Bank - Google Patents

Common-Rail-System für einen Verbrennungsmotor mit mehreren Zylinderbänken und mit unabhängig gesteuerter Kraftstoffzufuhr zu jeder Bank Download PDF

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Publication number
EP2388460A1
EP2388460A1 EP10005139A EP10005139A EP2388460A1 EP 2388460 A1 EP2388460 A1 EP 2388460A1 EP 10005139 A EP10005139 A EP 10005139A EP 10005139 A EP10005139 A EP 10005139A EP 2388460 A1 EP2388460 A1 EP 2388460A1
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EP
European Patent Office
Prior art keywords
fuel
control module
common
high pressure
bank
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Withdrawn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
EP10005139A
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English (en)
French (fr)
Inventor
Stefan Haas
Bert Ritscher
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.)
Caterpillar Motoren GmbH and Co KG
Original Assignee
Caterpillar Motoren GmbH and Co KG
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 Caterpillar Motoren GmbH and Co KG filed Critical Caterpillar Motoren GmbH and Co KG
Priority to EP10005139A priority Critical patent/EP2388460A1/de
Priority to CN201180024344.0A priority patent/CN102985668B/zh
Priority to PCT/EP2011/002393 priority patent/WO2011144312A1/en
Priority to KR1020127030101A priority patent/KR20130093505A/ko
Publication of EP2388460A1 publication Critical patent/EP2388460A1/de
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • 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
    • F02D41/008—Controlling each cylinder individually
    • F02D41/0082—Controlling each cylinder individually per groups or banks
    • 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
    • F02D41/24—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means
    • F02D41/26—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using computer, e.g. microprocessor
    • 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
    • F02D41/24—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means
    • F02D41/26—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using computer, e.g. microprocessor
    • F02D41/266—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using computer, e.g. microprocessor the computer being backed-up or assisted by another circuit, e.g. analogue
    • 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
    • F02D41/30—Controlling fuel injection
    • F02D41/38—Controlling fuel injection of the high pressure type
    • 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
    • F02D41/30—Controlling fuel injection
    • F02D41/38—Controlling fuel injection of the high pressure type
    • F02D41/3809—Common rail control systems
    • F02D41/3836—Controlling the fuel pressure
    • F02D41/3845—Controlling the fuel pressure by controlling the flow into the common rail, e.g. the amount of fuel pumped
    • 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
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F02M63/02—Fuel-injection apparatus having several injectors fed by a common pumping element, or having several pumping elements feeding a common injector; Fuel-injection apparatus having provisions for cutting-out pumps, pumping elements, or injectors; Fuel-injection apparatus having provisions for variably interconnecting pumping elements and injectors alternatively
    • 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
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F02M63/02—Fuel-injection apparatus having several injectors fed by a common pumping element, or having several pumping elements feeding a common injector; Fuel-injection apparatus having provisions for cutting-out pumps, pumping elements, or injectors; Fuel-injection apparatus having provisions for variably interconnecting pumping elements and injectors alternatively
    • F02M63/0225—Fuel-injection apparatus having a common rail feeding several injectors ; Means for varying pressure in common rails; Pumps feeding common rails
    • F02M63/0275—Arrangement of common rails
    • F02M63/0285—Arrangement of common rails having more than one common rail
    • F02M63/0295—Arrangement of common rails having more than one common rail for V- or star- or boxer-engines
    • 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
    • F02D41/30—Controlling fuel injection
    • F02D41/38—Controlling fuel injection of the high pressure type
    • F02D41/3809—Common rail control systems
    • F02D2041/3881—Common rail control systems with multiple common rails, e.g. one rail per cylinder bank, or a high pressure rail and a low pressure rail
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2200/00—Input parameters for engine control
    • F02D2200/02—Input parameters for engine control the parameters being related to the engine
    • F02D2200/06—Fuel or fuel supply system parameters
    • F02D2200/0602—Fuel pressure

Definitions

  • the present disclosure generally refers to fuel supply systems for internal combustion engines, which internal combustion engines may include at least two banks of cylinders and one common fuel rail associated to each cylinder bank.
  • the present disclosure refers to a multi-cylinder bank internal combustion engine comprising a first bank of cylinders, and at least one second bank of cylinders.
  • Each cylinder of the first and second banks may include at least one fuel injector.
  • a first common fuel rail may be configured to supply each fuel injector of the first bank of cylinders with fuel at high pressure.
  • At least one second common fuel rail may be configured to supply each fuel injector of the at least one second bank of cylinders with fuel at high pressure.
  • multi-cylinder bank internal combustion engines may be selected from the group of engines consisting of radial engines, opposed engines, V-type engines, and W-type engines.
  • Such internal combustion engines may be configured as diesel engines, gasoline engines, or internal combustion engines configured to burn different kinds of fuels like heavy fuel oil, diesel oil, gasoline, and natural gas.
  • the pumping of the fuel by the high-pressure fuel pumps is either switched-off or switched-on depending on an operating parameter, e.g. speed of a direct fuel injection internal combustion engine in a normal operation of the internal combustion engine by controlling a quantity control valve.
  • One electronic control module controls the operation of each high-pressure pump so that the electronic control of the quantity control valve results in a fuel supply in the common rail or not.
  • the necessary high-pressure line connecting the two common rails may be problematic. Due to vibration etc. the high-pressure line may be a source of danger because of a leak which may occur during operation.
  • a common rail fuel injection apparatus for a multi-bank diesel locomotive engine comprises a common rail disposed proximate to each bank of cylinders of the engine to provide high-pressure fuel to a fuel flow control apparatus associated with each respective cylinder.
  • a plurality of high-pressure fuel pumps provide high-pressure fuel to at least one of the common rails.
  • a high-pressure line is provided to convey high-pressure fuel between the two common rails, thereby providing for the continued delivery to all cylinders in the event of a failure of one of the high-pressure pumps.
  • US 2007/0283935 A1 shows a V-type internal combustion engine.
  • the internal combustion engine includes right and left banks, each having an appropriate number of cylinders.
  • the engine is provided with a fuel supply device and a control device.
  • the fuel supply device includes a first fuel pump and a second fuel pump. Fuel flows discharged from these two fuel pumps flow together into a common fuel supply passage. Then, the fuel is distributed from the fuel supply passage to respective high-pressure fuel pipes for the two banks.
  • These high-pressure fuel pipes might be configured as common rails. Again, here the high-pressure fuel pipes for each bank are connected to each other and, therefore, may generate problems as mentioned above.
  • the automatic power balancing apparatus comprises a power balancing control to balance power output from first and second engines that mutually drive a load.
  • the control includes an electronic control module electrically connected to a control panel.
  • First and second inlet manifold pressure sensors are associated with the first and second engine, respectively.
  • An offset potentiometer is connected to the control panel. The control automatically adjusts the power output of the second engine in response to the inlet manifold pressure of said first engine, the inlet manifold pressure of said second engine and a signal produced by said offset potentiometer.
  • a dual fuel engine having multiple dedicated controllers connected by a broadband communications link is disclosed.
  • one controller directly controls the gaseous fuel supply and also controls the liquid fuel supply by control of the upper controller.
  • the upper controller controls all aspects of engine operation.
  • US 6,694,741 B2 Another control system for use with a master engine and one or more slave engines is shown in US 6,694,741 B2 .
  • the master engine produces a master torque and the slave engine produces a slave torque.
  • the master engine and the slave engines have computers that control fueling to the engines.
  • the master control computer controls the slave control computer through an interface, such that the slave torques are a function of the master torque.
  • US 2008/0133117 A1 Another control system for a machine having an engine is disclosed in US 2008/0133117 A1 .
  • the engine has a first electronic governor.
  • the first electronic governor is operable to control the engine.
  • the engine also has a memory including predetermined configuration data.
  • the engine also has a second electronic governor.
  • the second electronic governor is operable to control the engine.
  • the second electronic governor is connected to the first electronic governor via a datalink.
  • the second electronic governor is configured to automatically receive the predetermined configuration data from the first electronic governor.
  • the system may also comprise more than one engine.
  • all known fuel supply systems for supplying high-pressure fuel to a plurality of common rails may be problematic due to a necessary connection between a plurality of common rails, in particular in case of a V-type engine having one common rail for each bank of cylinders.
  • the high-pressure line connecting the two common rails may be a source of danger.
  • a necessary high-pressure connection line for connecting two common rails at a V-type engine may extend to about several meters. Accordingly, due to vibration and necessary connection points, the risk of a failure as e.g. a leak may be raised at these connection points or along the high-pressure line.
  • the present disclosure is directed, at least in part, to improving or overcoming one or more aspects of prior systems.
  • a fuel supply system may be configured to be used at an internal combustion engine, which internal combustion engine may include at least two separate common fuel rails without any high pressure fuel connection line between them.
  • the fuel supply system may comprise at least one first high pressure pump configured to supply fuel at high pressure to a first common fuel rail.
  • a first control module may be configured to control an operation of the at least one first high pressure pump.
  • At least one second high pressure pump may be configured to supply fuel at high pressure to at least one second common fuel rail.
  • At least one second control module may be configured to control an operation of the at least one second high pressure pump.
  • the first and second control modules may be configured to communicate with each other.
  • One of the first and second control modules may be configured to operate as a master control module, and all other first and second control modules may be configured to operate as slave control modules.
  • a fuel supply system as disclosed herein may include first and second control modules provided as individual software modules integrated in one electronic control module.
  • Another exemplary embodiment of a fuel supply system as disclosed herein may comprise first and second control modules provided as individual electronic control modules.
  • a multi-cylinder bank internal combustion engine may comprise a first bank of cylinders.
  • Each cylinder of the first bank may include at least one fuel injector.
  • a first common fuel rail may be configured to supply each fuel injector of the first bank of cylinders with fuel at high pressure.
  • the internal combustion engine may further comprise at least one second bank of cylinders, each cylinder of the at least one second bank including at least one fuel injector.
  • At least one second common fuel rail may be configured to supply each fuel injector of the at least one second bank of cylinders with fuel at high pressure.
  • the first and second common fuel rails may be physically separated from each other without any fuel connection line between the first and second common fuel rails.
  • the internal combustion engine may comprise a fuel supply system according to the present disclosure.
  • the internal combustion engine may be selected from the group of engines consisting of multi-cylinder bank internal combustion engines, radial engines, opposed engines, V type engines, and W type engines.
  • the internal combustion engine may be selected from the group of engines consisting of diesel engines, gasoline engines, and engines configured to be operated with different kinds of fuel like heavy fuel oil, diesel, gasoline, and natural gas.
  • a fuel supply system for the internal combustion engine including at least two separate fuel rails without any high-pressure fuel connection line between the common fuel rails may comprise a first in-line system including at least one first high-pressure pump, the first common fuel rail and a first control module.
  • the first in-line system may be configured to be independently controlled by the associated first control module.
  • a second in-line system may include at least one second high-pressure pump, the second common fuel rail and a second control module.
  • the second in-line system may be configured to be independently controlled by the associated second control module.
  • the first in-line system and the second in-line system may be configured to be independently controlled, but in a master-slave-configuration of the first and second control modules.
  • the master control module may be configured to calculate the appropriate operation of associated high-pressure pumps, such that an appropriate fueling of the associated common fuel rail is achieved, and to control the at least one slave control module accordingly, such that an appropriate fueling of the associated common fuel rail is achieved.
  • the engine may comprise a first bank of cylinders. Each cylinder of the first bank may include at least one fuel injector.
  • the engine may further comprise a first common fuel rail configured to supply each fuel injector of the first bank of cylinders with fuel at high pressure, and at least one second bank of cylinders, each cylinder of the at least one second bank including at least one fuel injector.
  • At least one second common fuel rail may be configured to supply each fuel injector of the at least one second bank of cylinders with fuel at high pressure.
  • the first and second common fuel rails may be physically separated from each other without any fuel connection line between them.
  • the method may comprise the steps supplying fuel at high pressure to a first common fuel rail via at least one first high pressure pump, and supplying fuel at high pressure to at least one second common fuel rail via at least one second high pressure pump.
  • the step supplying of fuel at high pressure to the first common fuel rail and the step supplying fuel at high pressure to the at least one second common fuel rail may be conducted that the pressures within the first and second common fuel rails are substantially the same.
  • a further aspect of the present disclosure refers to an electronic control module.
  • the electronic control module may comprise a first software control module configured to function as a master control module.
  • the first software control module may be configured to calculate an appropriate fueling of fuel injectors supplied by first and second common fuel rails of an internal combustion engine.
  • the first and second common fuel rails may be separate without any high pressure fuel connection line arranged between the first and second common fuel rails.
  • the electronic control module may further comprise at least one second software control module configured to function as a slave control module.
  • the at least one slave control module may be configured to control operation of at least one high-pressure pump provided for supplying fuel at high pressure to the associated second common fuel rail.
  • the first software control module may be configured to calculate an appropriate fueling of all fuel injectors supplied by the first and second common fuel rails and to forward a signal indicating the appropriate fueling to the at least one slave software control module.
  • a master control module may have the following characteristic.
  • the master control module may be configured to calculate an appropriate fueling and to forward a signal indicating the appropriate fueling to the slave control module. Accordingly, in this exemplary embodiment only a master control module calculates the appropriate fueling, a slave control module receives the already calculated appropriate fueling. Based on or in accordance with the calculated appropriate fueling the master control module and the slave control module may independently control the respective associated components, e.g. the respective associated high-pressure pumps and/or the respective associated fuel injectors. Calculating the appropriate fueling may include calculating the appropriate amount of fuel to be injected by one fuel injector for the desired engine operation state, e.g. dependent on the desired engine speed.
  • Fig. 1 shows an exemplary schematic diagram of an internal combustion engine provided with two physically separated common fuel rails and a fuel supply system according to an exemplary embodiment of the present disclosure
  • Fig. 2 shows a flow diagram of an exemplary embodiment of a method for operating a fuel supply system according to the present disclosure
  • Fig. 3 shows another exemplary schematic diagram of an internal combustion engine provided with two physically separated common fuel rails and a fuel supply system according to another exemplary embodiment of the present disclosure.
  • a fuel supply system 100 may be used at an internal combustion engine 110 of middle to large size.
  • an internal combustion engine 110 may be sized and configured to be used e.g. in vessels, larger ships, or in power plants.
  • Internal combustion engines of such a size may have a power output of more than 500 kW/cylinder with 12 to 20 cylinders.
  • a fuel supply system 100 may be used at an internal combustion engine 110 having at least two individual cylinder banks 300, 400.
  • Each cylinder bank 300, 400 may comprise a plurality of cylinders 310, 410.
  • Each cylinder 310, 410 may be equipped with at least one fuel injector 320, 420.
  • Each of these fuel injectors 320, 420 may be connected to an associated common fuel rail 120, 130.
  • each cylinder bank 300, 400 of the multi-bank cylinder engine 110 may be provided with its individual common fuel rail 120, 130.
  • these individual common fuel rails 120, 130 may not be provided with a fluid or physical connection between the two common fuel rails 120, 130, such that fuel at high pressure cannot flow from one common fuel rail 120, 130 to the other common fuel rail 120, 130.
  • the first common fuel rail 120 may be connected to at least one high-pressure pump 140.
  • high-pressure pump 140 In the exemplary embodiment sown in Fig. 1 two high-pressure pumps 140a, 140b are provided. These high-pressure pumps 140a, 140b may be configured to supply fuel at high pressure, e.g. about 1,500-2,000 bar or even more, via non-return valves 650 into the associated first common fuel rail 120 (shown very schematically).
  • the second common fuel rail 130 may be connected to at least one high-pressure pump 150.
  • high-pressure pump 150 In the exemplary embodiment shown in Fig. 1 two high-pressure pumps 150a, 150b are provided. These high-pressure pumps 150a, 150b may be configured to supply fuel at high pressure, e.g. about 1,500-2,000 bar or even more, via non-return valves 660 into the associated second common fuel rail 130 (shown very schematically).
  • the first common fuel rail 120 may be configured to supply fuel at high pressure accumulated within the first common fuel rail 120 to the plurality of fuel injectors 320 located at the various cylinders 310 of the first bank 300 of cylinders 310.
  • the second common fuel rail 130 may be configured to supply fuel at high pressure accumulated within the second common fuel rail 130 to the plurality of fuel injectors 420 located at the various cylinders 410 of the second bank 400 of cylinders 410.
  • a circulation valve 630 may be provided at the first common fuel rail 160.
  • Another circulation valve 640 may be provided at the second common fuel rail 170.
  • a safety valve 610 may be provided at the first common fuel rail 160.
  • Another safety valve 620 may be provided at the second common fuel rail 160.
  • the first common fuel rail 120 may be provided with first pressure sensors 520.
  • Each of the pressure sensors 520 may be configured to forward a pressure signal to a first electronic control module (ECM) 160.
  • the pressure signal may indicate the pressure within the associated first common fuel rail 120.
  • the second common fuel rail 130 may be provided with second pressure sensors 530.
  • Each if the pressure sensors 530 may be configured to forward a pressure signal to a second electronic control module (ECM) 170.
  • the pressure signal may indicate the pressure within the associated second common fuel rail 130.
  • the pressure sensor signals from each rail 120, 130 may also be monitored by one ECM 160, 170.
  • ECM might also broadly be interpreted that electronic control units (ECU) or similar electronic controls can be subsumed under the term ECM.
  • the point of time and/or the duration of operation of the high-pressure pumps 140a, 140b and/or of the associated fuel injectors 320 may be controlled by the first ECM 160.
  • the point of time and/or the duration of operation of the second high-pressure pumps 150a, 150b and/or the fuel injectors 420 may be controlled by the second ECM 170.
  • These functions may also be integrated into the software to allow the use of fewer or possibly just one ECM for control of the multiple high-pressure pumps and/or the multiple injectors.
  • a more detailed exemplary embodiment of the present disclosure including integrated software is explained below with reference to Fig. 3 .
  • the first ECM 160 associated with the first common fuel rail 120 may be configured to calculate an appropriate fueling of the first common fuel rail 120 and the second common fuel rail 130. Calculating an appropriate fueling may include generating a signal indicating an amount of fuel to be injected by a fuel injector.
  • the first ECM 160 may also be configured to determine the desired power output of the internal combustion engine 110 and/or to determine the appropriate fuel delivery period of the associated high-pressure fuel pumps 140a, 140b and/or to determine the time of point and/or fuel injection delivery period of the associated fuel injectors 320 for achieving the appropriate fueling.
  • the first ECM 160 may be connected to the second ECM 170 associated with the second common fuel rail 130.
  • the second common fuel rail 130 may be constructed as the first common fuel rail 120 and may be equipped with the same further components like high-pressure pumps 150a, 150b, pressure sensors 530 etc.
  • the second ECM 170 may only be configured to receive the signal indicating the appropriate fueling from the first ECM 160 via a communication line 175.
  • the communication line 175 may be configured as a CAN bus system or the like.
  • a first in-line fuel system 200 may include the at least one first high pressure pump 140a, 140b, the first common fuel rail 120 and the first electronic control module 160.
  • the first in-line fuel system 200 may be configured to be independently controlled by the associated first electronic control module 160.
  • the electronic control module 160 may be configured as a master ECM 160, and the other electronic control module 170 may be configured as a slave.
  • the terms "master” and “slaves” are widely known in this technical field and, accordingly, detailed explanations of the function and operation of the two ECMs are omitted.
  • the master and slave control functions may also be integrated into the software to allow the use of fewer or possibly just one ECM for control of multiple cylinder banks.
  • the master ECM 160 may include the engine speed detection device 500, or may receive from an external engine speed detection device a signal indicating the current engine speed of the internal combustion engine 110. In addition, the master ECM 160 may receive signals indicating a pressure within the first common fuel rail 120 and/or the second common fuel rail 130. The master ECM 160 may also receive signal indicating a desired power output of the internal combustion engine 110.
  • the master ECM 160 may be configured to calculate a correct fueling of the plurality of common fuel rails 120, 130. Calculating a correct fueling may include determining an appropriate amount of fuel to be injected by one fuel injector 320, 420. Accordingly, the calculated value may have the unit mm 3 /fuel injector.
  • the master ECM 160 may control the timing of the high-pressure pumps 140a, 140b and/or its associated fuel injectors 320 in accordance with the calculated fueling, i.e., e.g., the correct point in time and fuel delivery time of the fuel pumps 140a, 140b and/or the correct point of time and duration of injection of fuel via the fuel injectors 320.
  • the master ECM 160 may also instruct the slave ECM 170 of the second common fuel rail 130 to control its associated high-pressure pumps 150a, 150b and/or the associated fuel injectors 320 in accordance with the calculated corrected fueling.
  • the master ECM 160 may directly control the associated high-pressure pumps 140a, 140b and/or the associated fuel injectors 320 so that the associated common fuel rail 120 may be supplied with high-pressure fuel at the correct pressure. Accordingly, a sufficient amount of high-pressure fuel may be available in the first common fuel rail 120 so that the corresponding fuel injectors 320 of the first cylinder bank 300 may receive sufficient fuel at the necessary points in time and the appropriate amount of fuel can be injected into the individual cylinder chambers of the cylinders 300.
  • the slave ECM 170 may receive from the master ECM 160 the signal indicating the appropriate fueling so that the second ECM 170 may provide instructions to the associated high-pressure pumps 150a, 150b of the second common fuel rail 130 and/or the fuel injectors 420, and the calculated corrected fueling for the second common fuel rail 130 and/or a correct operation of the fuel injectors 420 may be achieved. This loop of method steps may be continuously conducted.
  • the pressures within the first and second common fuel rails 120, 130 may be maintained on substantially the same level, even if no connecting line between the rails 120, 130 may be provided.
  • the method steps of determining a desired power of output of the engine 110 may also be based on a signal received from the master ECM 160, which signal may indicate a pressure within the first common fuel rail and/or the second common fuel rail 130.
  • the exemplary embodiment shown in Fig. 3 may comprise only one single ECM 700.
  • the ECM 700 may include a first control module 710 and a second control module 720. Both control modules may be provided as software control modules.
  • One software control module may be provided as a master control module 710, the other may be provided as a slave control module 720.
  • the master control module may be configured to receive information from a speed/timing module and to function as the above described master ECM.
  • the slave control module may receive information from the master control module and may be configured to control a bank 400 like the slave ECM described above.
  • a speed/timing module may be integrated in the ECM 700, or it may be provided externally.
  • a control module as disclosed herein further may be configured to calculate an appropriate operation of at least one first high pressure pump and at least one second high pressure pump, such that an appropriate fueling of first and second common fuel rails of an internal combustion engine is achievable, the first and second common fuel rails being fluidly separated without any high pressure fuel connection line arranged between the first and second common fuel rails.
  • a method as described herein further may further include that the step of calculating the appropriate fueling of all fuel injectors includes providing an amount of fuel to be injected by one fuel injector (320, 420) into an associated cylinder chamber.
  • the disclosure further refers to a computer program.
  • the computer program may comprise instructions executable in an electronic control module and causing that the electronic control module runs a method, which may includes one or more if the method steps disclosed herein.
  • master and slave control functions may be integrated in individual electronic control units, or these functions may be integrated in software to allow use of fewer or possibly just one ECM for control of multiple cylinder banks.
EP10005139A 2010-05-17 2010-05-17 Common-Rail-System für einen Verbrennungsmotor mit mehreren Zylinderbänken und mit unabhängig gesteuerter Kraftstoffzufuhr zu jeder Bank Withdrawn EP2388460A1 (de)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP10005139A EP2388460A1 (de) 2010-05-17 2010-05-17 Common-Rail-System für einen Verbrennungsmotor mit mehreren Zylinderbänken und mit unabhängig gesteuerter Kraftstoffzufuhr zu jeder Bank
CN201180024344.0A CN102985668B (zh) 2010-05-17 2011-05-13 向各列的燃料供应被独立控制的用于多气缸列燃烧发动机的共轨燃料系统
PCT/EP2011/002393 WO2011144312A1 (en) 2010-05-17 2011-05-13 Common rail fuel system for a multi-cylinder bank combustion engine with independently controlled fuel supply to each bank
KR1020127030101A KR20130093505A (ko) 2010-05-17 2011-05-13 개별 뱅크로 독립적으로 연료 공급 제어되는 다중 실린더 뱅크 연소 엔진용 커먼 레일 연료 시스템

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EP10005139A EP2388460A1 (de) 2010-05-17 2010-05-17 Common-Rail-System für einen Verbrennungsmotor mit mehreren Zylinderbänken und mit unabhängig gesteuerter Kraftstoffzufuhr zu jeder Bank

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CN110542088A (zh) * 2019-09-12 2019-12-06 珠海格力电器股份有限公司 燃烧装置、燃气热水炉及燃烧装置的控制方法
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CN102985668A (zh) 2013-03-20
CN102985668B (zh) 2016-04-06
WO2011144312A1 (en) 2011-11-24
KR20130093505A (ko) 2013-08-22

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