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
  • F02D41/02—Circuit arrangements for generating control signals
  • F02D41/04—Introducing corrections for particular operating conditions
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • F02D—CONTROLLING COMBUSTION ENGINES
  • F02D31/00—Use of speed-sensing governors to control combustion engines, not otherwise provided for
  • F02D31/001—Electric control of rotation speed
  • F02D31/007—Electric control of rotation speed controlling fuel supply
• • 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
  • F02D41/2406—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using essentially read only memories
  • F02D41/2409—Addressing techniques specially adapted therefor
  • F02D41/2422—Selective use of one or more tables
• • 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
  • F02D2200/60—Input parameters for engine control said parameters being related to the driver demands or status
  • F02D2200/604—Engine control mode selected by driver, e.g. to manually start particle filter regeneration or to select driving style
• • 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
  • F02D2200/70—Input parameters for engine control said parameters being related to the vehicle exterior
  • F02D2200/701—Information about vehicle position, e.g. from navigation system or GPS signal
• • 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
  • F02D2250/18—Control of the engine output torque
  • F02D2250/22—Control of the engine output torque by keeping a torque reserve, i.e. with temporarily reduced drive train or engine efficiency
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • F02D—CONTROLLING COMBUSTION ENGINES
  • F02D31/00—Use of speed-sensing governors to control combustion engines, not otherwise provided for
  • F02D31/001—Electric control of rotation speed
  • F02D31/007—Electric control of rotation speed controlling fuel supply
  • F02D31/009—Electric control of rotation speed controlling fuel supply for maximum speed control
• • 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
  • F02D41/027—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus to purge or regenerate the 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
  • F02D41/14—Introducing closed-loop corrections
  • F02D41/1438—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor
  • F02D41/1444—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases
  • F02D41/1448—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases the characteristics being an exhaust gas 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
  • F02D41/30—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
• • 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
  • F02D41/401—Controlling injection timing
• • 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
  • F02D41/402—Multiple injections

Definitions

• the invention relates to a reduced-noise motor vehicle, in particular trucks or buses, with an engine, in particular diesel engine whose operation is controlled by an engine via an injection pump, which includes a microprocessor, data and program memory and an input and output peripherals and thus measures for at least temporary Reduction of the sound radiation of the engine and / or the vehicle and / or under a, preferably prescribed by law measure are executable.
• a dynamics management for the powertrain in which for controlling the operating behavior of a diesel engine of a motor vehicle, a vehicle control computer controls an electronic fuel injection in dependence on the engine speed.
• the acceleration of the engine speed is controlled by a programmed into the vehicle control computer map, which assigns the setpoints of the speed acceleration, the engine speed and the vehicle speed in relation to each other. This makes it possible that the speed of the engine speed can be limited by means of a map speed and speed dependent.
• the setpoints of the individual parameters speed acceleration, engine speed and vehicle speed are transmitted to the engine control and lead there to a, the respective load condition appropriate and the desired dynamic behavior corresponding engine run-up.
• the publication EP 545 027 A1 teaches a low-noise motor vehicle, especially trucks or buses, in which the reduction / limitation of the noise emission of the engine via its operating control is accomplished.
• the values of different full load lines and Abregellinien that are at least partially different from those of the standard full load line and Abregelline provided.
• the from the full load line and / or Values taken from the control line are used for adjusting the injection pump in the sense of reduced-noise operation of the engine, with the values of power-reduced and reduced-speed full-load lines and cut-off lines being stored in free or additionally to be provided data storage locations of the engine electronics.
• the invention / innovation is based on the object to reduce the sound radiation of a vehicle and at the same time to ensure greater safety for the vehicle in traffic. Furthermore, it is an object of the invention, despite an at least temporarily reduced sound radiation of the motor vehicle to keep its power or speed of the engine constant and to increase the safety of the vehicle.
• the reduction of the sound radiation of the engine by measures whose operating control is executable such that switch free or additional data storage slots to be provided the engine electronics in a noise reduced mode, at least temporarily increasing consumption and at the same time at least power and speed constant acts and reduces the noise emission of the drive and / or motor.
• the noise reduced mode lowers the rail pressure, relocates the injection to a later time, and / or provides a higher volume of fuel metering subsets.
• the noise-reduced mode is active for a maximum period of 5 minutes, preferably 2 minutes, more preferably for a maximum period of 40 seconds, so that subsequently this noise-reduced mode is switched back to a normal mode and the usual noise emission of the motor vehicle is present again, during this phase, the usual power reserves of the engine are available.
• the described time limitation to a maximum period of 5 minutes or as set forth by a correspondingly shorter period of time is based on the finding that in particular short-term sound emission peaks decisively influence the subjective noise impression of a motor vehicle. If now these tips of the Schallabstrahl characterizing of the vehicle are "capped" by the described measure, the subjective overall perception of the vehicle noise can be significantly reduced while maintaining a Vorhalten the usual power and speed characteristics of the vehicle can be achieved.
• the limit values to be used for this purpose could, for example, be in the form that the decrease in the conversion rate of the catalyst is between 10 and 50%, preferably between 12 and 15% and / or the fill level limit, in particular indicated by the exhaust backpressure, for the particulate filter between 60 and 400 mbar , preferably between 150 and 250 mbar.
• the temporary noise reduction may affect fuel consumption and / or exhaust emissions for this period.
• the pilot injection quantity is increased compared to the normal mode and / or that in the noise-reduced mode, the exhaust gas recirculation is opened and / or opened more than in a normal mode.
• the latter results in maintaining or increasing the exhaust gas recirculation rate.
• a greater opening of the exhaust gas recirculation means an increase in the exhaust gas recirculation rate than comparable operating parameters in the normal mode.
• an orientation to a predefined speed value in the range of 33 to 90% of the rated speed of the engine is advantageous in this case.
• values for the actual speed threshold value between 30 and 70 km / h, preferably between 39 and 61 km / h, may be assumed for lorries and / or passenger cars.
• the limit ratio of the gear ratio greater than 2 to 1 or less than 6 to 1 can be used.
• a dependency of the vehicle load can be taken into account.
• the load of the vehicle can be determined via the shock absorber behavior, one or more load cells, by input of the driver and / or by inference of the operating behavior of the truck in the normal state (for example via acceleration sensors).
• a first degree of sound reduction is performed during the quiet mode, provided that the vehicle is in a first surface section and a second degree of sound reduction is performed during the quiet mode, provided the motor vehicle is located in a second surface portion, wherein the first and second degree of sound reduction are different, in particular at least one delta of 3 dB has a sound pressure at a defined selected measuring distance.
• a first and second degree of sound reduction is meant a quasi-silent mode A and a low-noise mode B, during their respective mode phases, the sound emission of the motor vehicle is reduced from the normal mode, and the silent mode A and the silent mode B with a delta of differ by at least 3 dB with respect to their sound radiation.
• Quadrants of a map and / or sections of a GPS map system may be used as the area section become.
• the motor vehicle can also detect and allocate the surface sections, for example, as in-town and out-of-town scanning of town signs and / or the type of surroundings (buildings and / or landscape).
• a quieter mode can be activated in-situ and a low-noise mode out of town. This approach may be due to both the higher noise avoidance objective and the higher noise reflection aspect of the particular location.
• sound in a built-up, urban area will spread much more strongly or the sound will be subjectively more clearly perceptible.
• the location information refers to an assignment of the vehicle location to urban or heavily built-up areas, or to rural or weakly built-up areas.
• the existence of the motor vehicle in a first or second or further surface section may be by a GPS system, a location system, an optical system, a vehicle communication system, a mobile device, a smartphone, a broadcasting system, a radar system, an infrared system, a card system and / or a manual input of the driver can be determined and / or determined.
• the optical system can advantageously detect buildings, landscapes, traffic signs and / or moving objects in the vicinity of the vehicle and select from these detected objects one of at least two different environmental categories and allocate, depending on the selected or associated environmental categories, the degree of sound reduction and / or the threshold for initiating the low-noise mode varies. For example, pedestrians or other road users in the vicinity of the vehicle are detected, so that a need for the initiation of the sound-reduced mode can be derived therefrom. Thus, the initiation could be made dependent on potential noise receivers in the vicinity of the vehicle.
• a further advantageous measure is when the degree of sound reduction and / or the threshold value for initiating the noise-reduced mode depends on the values of a rain sensor on the vehicle and / or depending on the weather conditions assigned to the location of the vehicle and / or depending on a optical sensor detected weather information and / or depending on the Schallreflekomseigenschaften the environment and in particular the roadways varüert.
• a wet road which is characterized among other things by an increased degree of sound reflection, an earlier initiation of a sound-reduced mode phase and / or initiation of an "amplified" sound-reduced mode phase can be advantageous.
• an adjustment of the noise-reduced mode is made dependent on the "acoustic conditions" prevailing outside the vehicle (reflection properties of the environment).
• this can be achieved by increasing the cylinder pressure through the intervention in the combustion process and thereby, by influencing the quantities and / or times of pilot injection, a reduction of the sound radiation is achieved.
• the exhaust aftertreatment system is designed accordingly that the then at least temporarily resulting increased raw exhaust gas emissions remain implementable.
• a direct or indirect (history, account models) query of the exhaust aftertreatment system is advantageous, in particular before the implementation of the noise-reduced mode, which then provides the information as to whether and, if so, how long a sound-emission-reduced mode can be operated while maintaining the exhaust gas limit values.
• An account model can map the time course of parameters of the exhaust gas aftertreatment in the form of addition and subtraction of defined amounts and thereby provide statements on the performance or the duration of a required performance of the exhaust gas aftertreatment system.
• the temporary increases in the thermal and mechanical load of the engine components can be taken into account in their design.
• a consideration of the loading of the mechanical components may be provided before the start of the noise reduced mode. For example, start of the noise reduced mode may be inhibited if the components of the engine have recently been subjected to a high thermal load (full load operation) to avoid material failure due to a continuous high load of the components.
• the subject invention extends not only to an objectively described motor vehicle, but also generally to a method for influencing the sound emission of a motor vehicle having the above features.
• the invention is explained in more detail with reference to an embodiment in the drawing figures.

Landscapes

• Engineering & Computer Science (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Combined Controls Of Internal Combustion Engines (AREA)
• Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
• Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
• Electric Propulsion And Braking For Vehicles (AREA)
• Fuel-Injection Apparatus (AREA)
• Hybrid Electric Vehicles (AREA)

Applications Claiming Priority (1)

Publications (2)

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Cited By (1)

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Citations (2)

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• 2012
  • 2012-03-09 DE DE102012004585A patent/DE102012004585A1/de not_active Ceased
• 2013
  • 2013-02-21 RU RU2013107898/07A patent/RU2603631C2/ru active
  • 2013-03-02 EP EP13001054.9A patent/EP2636877A3/fr not_active Withdrawn
  • 2013-03-04 IN IN935CH2013 patent/IN2013CH00935A/en unknown
  • 2013-03-08 US US13/790,153 patent/US9200579B2/en active Active
  • 2013-03-08 CN CN201310074308.6A patent/CN103306823B/zh not_active Expired - Fee Related
  • 2013-03-08 BR BR102013005671-5A patent/BR102013005671B1/pt not_active IP Right Cessation

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