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
  • 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
  • F02D41/263—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using computer, e.g. microprocessor the program execution being modifiable by physical parameters
• • 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
• • 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
  • F02D41/22—Safety or indicating devices for abnormal conditions
  • F02D2041/224—Diagnosis of the fuel system
• • 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
  • F02D41/28—Interface circuits
  • F02D2041/286—Interface circuits comprising means for signal processing
• • 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
• • 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
  • F02D2200/0614—Actual fuel mass or fuel injection amount
• • 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
  • F02D2200/0618—Actual fuel injection timing or delay, e.g. determined from fuel pressure drop
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • F02D—CONTROLLING COMBUSTION ENGINES
  • F02D2250/00—Engine control related to specific problems or objectives
  • F02D2250/31—Control of the fuel pressure
• • 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
  • F02D41/22—Safety or indicating devices for abnormal conditions
  • F02D41/221—Safety or indicating devices for abnormal conditions relating to the failure of actuators or electrically driven elements
• • 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
  • F02D41/40—Controlling fuel injection of the high pressure type with means for controlling injection timing or duration

Definitions

• Operation variable or its time course is linked only indirectly with the relevant for the operation of the internal combustion engine injection quantities such as the start of injection and the injected fuel quantity.
• injection quantities such as the start of injection and the injected fuel quantity.
• the actual, physical start of the injection of fuel into a cylinder of the internal combustion engine deviates regularly from the start of energization of the injector.
• the comparison of the measured course of the electrical operating variable with the stored reference curve requires a comparatively complicated and cumbersome procedure in order to determine plausible values for the injection parameter.
• Internal combustion engine or the specific design of the internal combustion engine is calculated or simulated analytically or numerically. This, too, is preferably not carried out in real time, but initially before the internal combustion engine is put into operation, wherein the reference pressure profile is stored in the control unit.
• Injection parameters are compared to perform the control.
• the determined injection parameter is regulated to the corresponding desired injection parameter.
• this pressure is preferably an injection start pressure, and thus a pressure in the common high-pressure accumulator of the injection system.
• the process is therefore future-proof.
• An embodiment of the method is also preferred, in which the comparison is carried out by calculating a cross-correlation function of the detected pressure profile with the at least one reference pressure profile.
• the cross-correlation function ⁇ ( ⁇ ) without limiting the generality for two time-dependent functions x (t), y (t) is given by the following equation:
• Shift between two signals, curves or data sets, in particular between the detected pressure profile and the reference pressure curve determine.
• an injection start is determined as an injection parameter from a displacement of the detected pressure profile relative to the reference pressure profile.
• the cross-correlation function can be calculated simply and quickly as a measure of similarity and as a measure of the shift between the recorded pressure profile and the reference pressure profile.
• the data necessary for the expansion of the compressed data set comprise the average values determined from the original data set from the averaging over the operating points while the time index is held, the corresponding standard deviations, the principal components calculated in the main component analysis and the inverses of the main components
• Method is provided a separate control device. It is particularly possible that the separate control unit associated with the injection system or is part of the injection system.
• Internal combustion engine is designed as a gas engine, it is for use in one
• Cogeneration plant suitable for stationary power generation.
• the pressure sensor is arranged such that the pressure in a fuel line - preferably downstream of the throttle - can be detected by means of the pressure sensor.
• the pressure sensor is preferably arranged directly on or in the fuel line.
• Reference pressure curves is determined as the injection quantity, the one
• Exemplary embodiment is arranged directly on the high-pressure accumulator 19, wherein by the pressure sensor 27, a pressure in the high-pressure accumulator 19 can be detected.
• the control unit 9 is operatively connected to the further pressure sensor 27 for this purpose, which is shown schematically here by a second operative connection 29, which may be made by cable or wirelessly.
• the control unit 9 is preferably designed to determine an operating point of the injection system 3 as a function of the pressure in the high-pressure accumulator 19.
• control unit 9 is preferably connected to the injector 5 whose control is operatively connected, which is shown schematically in Figure 1 by a third operative connection 33, which may be made by cable or wireless.
• the injection quantity is set as the injection quantity that is found

Landscapes

• Engineering & Computer Science (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Computer Hardware Design (AREA)
• Microelectronics & Electronic Packaging (AREA)
• Combined Controls Of Internal Combustion Engines (AREA)
• Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
• Fuel-Injection Apparatus (AREA)

Applications Claiming Priority (2)

Publications (1)

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Family Applications (1)

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• 2013
  • 2013-08-14 DE DE102013216192.1A patent/DE102013216192B4/de not_active Expired - Fee Related
• 2014
  • 2014-08-01 JP JP2016533834A patent/JP6388946B2/ja not_active Expired - Fee Related
  • 2014-08-01 US US14/904,270 patent/US10107223B2/en active Active
  • 2014-08-01 EP EP14755019.8A patent/EP3033515A1/de not_active Withdrawn
  • 2014-08-01 CN CN201480045331.5A patent/CN105612334B/zh not_active Expired - Fee Related
  • 2014-08-01 WO PCT/EP2014/002125 patent/WO2015022057A1/de active Application Filing

Non-Patent Citations (1)

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