WO2015022236A1 - Verfahren und vorrichtung zum betreiben einer kraftstoffhochdruckpumpe und system - Google Patents
Verfahren und vorrichtung zum betreiben einer kraftstoffhochdruckpumpe und system Download PDFInfo
- Publication number
- WO2015022236A1 WO2015022236A1 PCT/EP2014/066821 EP2014066821W WO2015022236A1 WO 2015022236 A1 WO2015022236 A1 WO 2015022236A1 EP 2014066821 W EP2014066821 W EP 2014066821W WO 2015022236 A1 WO2015022236 A1 WO 2015022236A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- pressure fuel
- fuel pump
- pressure
- energy
- hydraulic
- Prior art date
Links
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
- F02D41/30—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
- F02M63/0225—Fuel-injection apparatus having a common rail feeding several injectors ; Means for varying pressure in common rails; Pumps feeding common rails
-
- 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
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/04—Introducing corrections for particular operating conditions
- F02D41/12—Introducing corrections for particular operating conditions for deceleration
- F02D41/123—Introducing corrections for particular operating conditions for deceleration the fuel injection being cut-off
-
- 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
- F02D41/3082—Control of electrical fuel pumps
-
- 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
- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/31—Fuel-injection apparatus having hydraulic pressure fluctuations damping elements
- F02M2200/315—Fuel-injection apparatus having hydraulic pressure fluctuations damping elements for damping fuel pressure fluctuations
-
- 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
- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/40—Fuel-injection apparatus with fuel accumulators, e.g. a fuel injector having an integrated fuel accumulator
Definitions
- the invention on the one hand relates to a method for operating a high-pressure fuel pump and on the other hand a korres ⁇ pondierende device for operating the high-pressure fuel pump and a corresponding system comprising the device.
- Vehicles often have a high-pressure fuel accumulator and a high-pressure fuel pump.
- the fuel high pressure accumulator the so-called common rail serves to store a fuel olumens to allow multiple injections with largely constant pressure.
- the task underlying the invention it is firstly to provide the or the helping easy to store a hydraulic energy in the Kraftstoffhoch- accumulator to a method and on the other hand a device for operating a high-pressure fuel pump of a high-pressure fuel ⁇ memory.
- the object is solved by the features of the independent claims.
- Advantageous embodiments of the invention are characterized in the subclaims.
- the invention is characterized on the one hand by a method for operating a high-pressure fuel pump of a high-pressure fuel ⁇ high-pressure accumulator of a vehicle and on the other hand by a corresponding device for operating the power ⁇ high-pressure pump and a corresponding system, which the device, and the high-pressure fuel pump and the Fuel high pressure accumulator has.
- the high-pressure fuel pump is operated free of a predetermined engine speed and free of a predetermined fuel demand depending on a predetermined efficiency range of the high-pressure fuel pump for storing a hydraulic energy by means of the fuel in the high-pressure fuel storage.
- the predetermined efficiency range is, for example, an area in which the high-pressure fuel pump has a very high efficiency, that is, for example, an efficiency of more than 50%.
- the efficiency depends in this case, for example, on a flow rate and / or from a prevailing in the high-pressure fuel storage fluid pressure and / or a fluid pressure in an inlet to the high-pressure fuel pump and thus, for example, by measuring the flow rate and / or the fluid pressure in the high-pressure fuel storage and / or
- the high-pressure fuel pump is operated only if it works very efficiently.
- the high-pressure fuel pump is not operated depending on the engine speed and not dependent on a given fuel demand.
- the high-pressure fuel pump it is possible the high-pressure fuel pump to always operate at a very high We ⁇ ciency area.
- a hydraulic energy can be stored in the high-pressure ⁇ material high-pressure accumulator, which can be used later for injection operations, for example. However, it can also be used alternatively or additionally for other consumers.
- a high-pressure fuel storage reservoir that is larger than a conventional high-pressure accumulator. contact, so for example, a high-pressure fuel storage, which has a volume of at least 40 cm 3 .
- the high-pressure fuel pump is operated by means of a recuperated energy.
- the high-pressure fuel pump is operated by means of a recuperated energy, if this recuperated energy can not otherwise be used, for example because the vehicle has no designated electrical energy storage and / or because a designated electrical energy storage is already fully charged.
- This allows recuperated energy to be used to convert it into hydraulic energy and store it. As a result, a very high energy efficiency of the vehicle can be achieved.
- the recuperated energy comprises an energy generated by means of brake energy recuperation.
- the mechanical energy generated in the braking energy is converted by means of a Ge ⁇ nerators into electrical energy and stored by means of the high-pressure fuel pump in the form of hydraulic energy in the high-pressure fuel tank.
- the recuperated energy comprises an energy generated by means of exhaust heat recuperation.
- the high-pressure fuel accumulator additionally has a pressure tank for storing the hydraulic energy.
- the pressure tank is for example a diaphragm accumulator.
- the pressure tank has, for example, a volume of at least one liter.
- the high-pressure fuel pump with an electric machine me ⁇ chanically coupled to operate the high-pressure fuel pump.
- the high-pressure fuel pump can be operated very easily by means of electrical energy.
- This also makes it very easy to operate the high-pressure fuel pump by means of a recuperated electrical energy, such as by means of a recuperated braking energy and / or a recuperated exhaust heat energy.
- the high-pressure fuel pump is designed as a hydraulic machine that can be operated as a high-pressure fuel pump or as a hydraulic motor.
- the high-pressure fuel pump is mechanically coupled to an electric machine for driving the electric machine by means of the hydraulic energy stored in the high-pressure fuel accumulator.
- High -pressure fuel pump is operated depending on a Energyiean ⁇ claim as a hydraulic motor.
- the energy stored hydraulically can easily be converted into electrical energy in an energy request by the high-pressure fuel pump is operated as a hydraulic motor and hereby the electric machine is operated as a generator.
- the stored hydraulic energy it is possible to use the stored hydraulic energy not only for injections in an internal combustion engine, but also, for example, for electrical loads in the vehicle and / or for charging an electrical energy storage.
- the information stored in the high-pressure fuel accumulator by means of the fuel hydraulic energy is provided for operating an internal ⁇ combustion engine free direct from a Nachêt or in particular free from Nachêt of fuel by means of the high-pressure fuel pump.
- the high-pressure fuel ⁇ pump for example, is mechanically driven by the internal combustion engine, the high-pressure fuel pump can be ⁇ play decoupled at by means of a mechanical and / or hydraulic and / or magnetic coupling of the internal combustion engine, so that injectors of the internal combustion engine alone from the fuel high-pressure accumulator and / or the pressure tank can be supplied.
- drag losses can be saved on the high-pressure fuel pump.
- the system has, for example, in addition to the fuel ⁇ high-pressure pump, the device and the high-pressure fuel storage, the pressure tank and / or the electric machine.
- FIG. 1 shows a system with a high-pressure fuel pump and Figure 2 is a flowchart for operating the high-pressure fuel pump.
- FIG. 1 shows a system 1.
- the system 1 has a high-pressure fuel pump 5 of a vehicle.
- the high-pressure fuel pump 5 is designed for example in gasoline to generate pressures up to 200 bar and diesel pressures up to 2500 bar.
- the high-pressure fuel pump 5 is connected to a high-pressure fuel accumulator 7, the so-called common rail.
- the high-pressure fuel pump 5 On an inlet side, the high-pressure fuel pump 5 is connected, for example, via a filter 15 to a fuel tank 10.
- the electric machine 17 is designed for example as an electric motor. In this way, the high-pressure fuel pump 5 can be driven by the electric machine 17.
- the high-pressure fuel pump 5 is formed for example as Hyd ⁇ raulikmaschine which can be operated both as a fuel high-pressure pump ⁇ or as a hydraulic motor.
- the electric machine 17 is alternatively or additionally designed as a generator.
- the force ⁇ high pressure fuel pump 5 can drive the electrical machine 17 as Hyd ⁇ raulikmotor for converting hydraulic energy into electrical energy.
- the high-pressure fuel accumulator 7 additionally has a pressure tank 9 for storing hydraulic energy.
- the pressure tank 9 is for example a diaphragm accumulator.
- the pressure tank 9 has, for example, a pressure volume of at least one liter.
- the high-pressure fuel accumulator 7 is additionally connected to a plurality of injection valves 20 for operating an internal combustion engine of the vehicle.
- the force ⁇ high pressure fuel pump 5 is connected to a control device 30.
- the control device 30 may also be referred to as a device for operating a high-pressure fuel pump.
- the control device 30 comprises a computing unit, a program and data memory and at least one interface, with which it is coupled to the high-pressure fuel pump 5 for controlling the high-pressure fuel pump 5.
- the control device 30 can be connected to the electric machine 17 for controlling the electric machine 17.
- the arithmetic unit and / or the program and data memory can be formed into one unit and / or distributed over several units.
- control device 30 is preferably in the program and data memory
- Program stored which can be processed during operation of the vehicle.
- the program is explained in more detail below with reference to the flowchart of Figure 2.
- the program is started in a step Sl, variables can be initialized in the ge ⁇ if necessary.
- a step S3 it is determined in which efficiency W the high-pressure fuel pump 5 is currently being operated. This happens For example, taking into account a fluid pressure on an input side of the high-pressure fuel pump 5 and / or the fluid pressure in the high-pressure fuel storage 7 and / or a delivery of fluid.
- a step S5 it is checked whether the determined efficiency W lies in a predetermined efficiency range.
- the predetermined efficiency range is, for example, an area in which the high-pressure fuel pump 5 has a very high efficiency W, that is, for example, an efficiency W of more than 50%. If the efficiency W is not in the efficiency range, the program is continued in a step S7. If it is within the efficiency range, the program is continued in a step S9.
- step S7 the high-pressure fuel pump 5 is operated freely by a predetermined engine speed and free from a predetermined fuel demand in the predetermined efficiency range of the high-pressure fuel pump 5, for storing a hydraulic energy by means of the fuel in the high-pressure ⁇ material high-pressure accumulator 7 and / or in the pressure tank.
- the delivery rate of the high-pressure fuel ⁇ pump 5 is increased by, for example, an inlet valve of the high-pressure fuel pump 5 earlier, or temporally closer to a bottom dead center of a pump piston of
- High-pressure fuel pump 5 is closed.
- hyd ⁇ raulische energy in the fuel high-pressure accumulator 7 and / or in the pressure tank 9 can be saved.
- Step S7 operated by means of a recuperated energy, such as a recuperated braking energy and / or a recuperated exhaust gas heat energy.
- a recuperated energy such as a recuperated braking energy and / or a recuperated exhaust gas heat energy.
- High-pressure fuel pump 5 by means of the recuperated energy operated, if this recuperated energy can not be used otherwise, for example, because the vehicle has no designated electrical energy storage and / or because a designated electrical energy storage is already fully charged.
- step S9 it is checked whether an energy requirement E is present. If there is an energy requirement E, the program is continued in a step Sil. If there is no energy request E, the program is continued in step S3.
- the high-pressure fuel pump 5 is operated depending on the energy requirement E as a hydraulic motor for driving the electric machine 17 as a generator and thus to convert the hydraulic energy into an electrical energy ⁇ .
- the high-pressure fuel pump 5 is operated, for example, as long as a hydraulic motor until no more energy requirement E is present and / or until a predetermined lower pressure limit is reached in the high-pressure fuel accumulator 7.
- the electrical energy generated thereby can be used for electrical consumers in the vehicle and / or for charging an electrical energy store.
- the program is continued in step S3.
- the two functions of the high-pressure fuel pump 5, ie operating as a high-pressure pump and operating as hydraulic ⁇ likmotor, can also be implemented in two separate programs, in which case it must be ensured that not both functions can be performed simultaneously.
- the high-pressure fuel accumulator 7 and / or the pressure tank 9 can be used in addition to use as a high-pressure fuel storage 7 for operating the engine as hyd ⁇ raulischer energy storage, for example, free of immediate Nachêt or free of Nachêt of fuel by means of the fuel high ⁇ pressure pump. 5 , whereby, for example, an energy efficiency of the vehicle can be improved.
- the high-pressure fuel pump 5 is driven, for example, mechanically via the internal combustion engine, then the high-pressure fuel pump 5 is driven, for example, mechanically via the internal combustion engine.
- High-pressure fuel pump 5 for example by means of a me ⁇ chanical and / or hydraulic and / or magnetic
- Clutch are decoupled from the internal combustion engine, so that the injectors alone from the high-pressure fuel storage 7 and / or the pressure tank 9 can be supplied. As a result, for example, drag losses on the high-pressure fuel pump 5 can be saved.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
- Fuel-Injection Apparatus (AREA)
- Hybrid Electric Vehicles (AREA)
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201480003439.8A CN104854332B (zh) | 2013-08-13 | 2014-08-05 | 用于操作高压燃料泵的方法和装置及系统 |
BR112015011870A BR112015011870A2 (pt) | 2013-08-13 | 2014-08-05 | método e dispositivo para operar uma bomba de combustível de alta pressão, e sistema |
IN4053DEN2015 IN2015DN04053A (de) | 2013-08-13 | 2015-05-13 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102013215958.7 | 2013-08-13 | ||
DE201310215958 DE102013215958B4 (de) | 2013-08-13 | 2013-08-13 | Verfahren und Vorrichtung zum Betreiben einer Kraftstoffhochdruckpumpe und System |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2015022236A1 true WO2015022236A1 (de) | 2015-02-19 |
Family
ID=51265701
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2014/066821 WO2015022236A1 (de) | 2013-08-13 | 2014-08-05 | Verfahren und vorrichtung zum betreiben einer kraftstoffhochdruckpumpe und system |
Country Status (5)
Country | Link |
---|---|
CN (1) | CN104854332B (de) |
BR (1) | BR112015011870A2 (de) |
DE (1) | DE102013215958B4 (de) |
IN (1) | IN2015DN04053A (de) |
WO (1) | WO2015022236A1 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2016066407A1 (de) * | 2014-10-30 | 2016-05-06 | Robert Bosch Gmbh | Verfahren zum betreiben eines kraftstoffversorgungssystems für einen verbrennungsmotor sowie kraftstoffversorgungssystem |
US20190368449A1 (en) * | 2018-06-01 | 2019-12-05 | GM Global Technology Operations LLC | Returnless fuel system with accumulator |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102014220389B4 (de) | 2014-10-08 | 2019-10-10 | Continental Automotive Gmbh | Anordnung und Verfahren zur Nutzung von Bremsenergie in einem Kraftstoffsystem |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0223419A1 (de) * | 1985-10-19 | 1987-05-27 | Isuzu Motors Limited | Energierückgewinnungsvorrichtung für eine aufgeladene Brennkraftmaschine |
DE102008050696A1 (de) * | 2008-10-07 | 2010-04-15 | Continental Automotive Gmbh | Verfahren zum Steuern einer Brennkraftmaschine und Brennkraftmaschine |
US20120137676A1 (en) * | 2010-01-21 | 2012-06-07 | Satoru Murata | Engine-exhaust-gas energy recovery apparatus, ship equipped with the same, and power plant equipped with the same |
DE102011101861A1 (de) * | 2011-05-18 | 2012-11-22 | Audi Ag | Verfahren zum Versorgen einer Brennkraftmaschine mit unter Hochdruck versetztem Kraftstoff |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH1150933A (ja) * | 1997-08-01 | 1999-02-23 | Zexel Corp | 蓄圧式燃料噴射装置 |
DE102008036122B4 (de) * | 2008-08-01 | 2014-07-10 | Continental Automotive Gmbh | Verfahren zur Adaption der Leistung einer Kraftstoffvorförderpumpe eines Kraftfahrzeugs |
DE102008045211A1 (de) * | 2008-08-30 | 2010-03-04 | Robert Bosch Gmbh | Fahrzeug mit Hybridantrieb |
DE102008050051A1 (de) * | 2008-10-01 | 2010-04-15 | Continental Automotive Gmbh | Verfahren und Vorrichtung zum Stoppen der Brennkraftmaschine eines Kraftfahrzeugs |
CN103223872A (zh) * | 2013-05-08 | 2013-07-31 | 昆山晋桦豹胶轮车制造有限公司 | 一种液压马达驱动发电机装置 |
-
2013
- 2013-08-13 DE DE201310215958 patent/DE102013215958B4/de not_active Expired - Fee Related
-
2014
- 2014-08-05 CN CN201480003439.8A patent/CN104854332B/zh not_active Expired - Fee Related
- 2014-08-05 BR BR112015011870A patent/BR112015011870A2/pt not_active Application Discontinuation
- 2014-08-05 WO PCT/EP2014/066821 patent/WO2015022236A1/de active Application Filing
-
2015
- 2015-05-13 IN IN4053DEN2015 patent/IN2015DN04053A/en unknown
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0223419A1 (de) * | 1985-10-19 | 1987-05-27 | Isuzu Motors Limited | Energierückgewinnungsvorrichtung für eine aufgeladene Brennkraftmaschine |
DE102008050696A1 (de) * | 2008-10-07 | 2010-04-15 | Continental Automotive Gmbh | Verfahren zum Steuern einer Brennkraftmaschine und Brennkraftmaschine |
US20120137676A1 (en) * | 2010-01-21 | 2012-06-07 | Satoru Murata | Engine-exhaust-gas energy recovery apparatus, ship equipped with the same, and power plant equipped with the same |
DE102011101861A1 (de) * | 2011-05-18 | 2012-11-22 | Audi Ag | Verfahren zum Versorgen einer Brennkraftmaschine mit unter Hochdruck versetztem Kraftstoff |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2016066407A1 (de) * | 2014-10-30 | 2016-05-06 | Robert Bosch Gmbh | Verfahren zum betreiben eines kraftstoffversorgungssystems für einen verbrennungsmotor sowie kraftstoffversorgungssystem |
US20190368449A1 (en) * | 2018-06-01 | 2019-12-05 | GM Global Technology Operations LLC | Returnless fuel system with accumulator |
Also Published As
Publication number | Publication date |
---|---|
BR112015011870A2 (pt) | 2017-07-11 |
DE102013215958A1 (de) | 2015-02-19 |
IN2015DN04053A (de) | 2015-10-09 |
DE102013215958B4 (de) | 2015-05-13 |
CN104854332B (zh) | 2018-06-26 |
CN104854332A (zh) | 2015-08-19 |
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