WO2016034315A1 - Prüfablauf für hochdruckpumpen - Google Patents
Prüfablauf für hochdruckpumpen Download PDFInfo
- Publication number
- WO2016034315A1 WO2016034315A1 PCT/EP2015/066002 EP2015066002W WO2016034315A1 WO 2016034315 A1 WO2016034315 A1 WO 2016034315A1 EP 2015066002 W EP2015066002 W EP 2015066002W WO 2016034315 A1 WO2016034315 A1 WO 2016034315A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- pressure
- pressure pump
- pump
- accumulator
- fluid
- Prior art date
Links
Classifications
-
- 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
- F02M63/0012—Valves
- F02M63/0031—Valves characterized by the type of valves, e.g. special valve member details, valve seat details, valve housing details
- F02M63/005—Pressure relief valves
- F02M63/0052—Pressure relief valves with means for adjusting the opening pressure, e.g. electrically controlled
-
- 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
- F02M65/00—Testing fuel-injection apparatus, e.g. testing injection timing ; Cleaning of fuel-injection apparatus
- F02M65/003—Measuring variation of fuel pressure in high pressure line
-
- 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
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
- F02M59/44—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston
-
- 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
- F02M63/023—Means for varying pressure in common rails
- F02M63/0235—Means for varying pressure in common rails by bleeding fuel pressure
- F02M63/025—Means for varying pressure in common rails by bleeding fuel pressure from the common rail
-
- 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
- F02M65/00—Testing fuel-injection apparatus, e.g. testing injection timing ; Cleaning of fuel-injection apparatus
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B51/00—Testing machines, pumps, or pumping installations
-
- 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
- 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
-
- 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
- F02D41/3863—Controlling the fuel pressure by controlling the flow out of the common rail, e.g. using pressure relief valves
-
- 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
- F02M2200/02—Fuel-injection apparatus having means for reducing wear
-
- 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
- F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
- F02M55/007—Venting means
-
- 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
- Y02T10/40—Engine management systems
Definitions
- the invention relates to a test sequence for high-pressure pumps, in particular for high-pressure pumps, which are provided for injecting fuel into an internal combustion engine.
- the pressure control starts by energizing the pressure control valves, which change / set the outlet cross section of the high-pressure accumulator in accordance with the setpoint pressure.
- the pressure control valves Prior to a test step change, which is associated with a change in the speed of the high pressure pump, the pressure control valves are switched off for safety reasons to prevent an unintentional increase in pressure in the high pressure accumulator, or the pressure in the high pressure accumulator is shut down to 0 bar.
- the pressure in the high-pressure accumulator is set to the now desired (new) value by suitably activating the pressure regulating valves.
- a metering unit (ZME) of the high-pressure pump When starting test steps, a metering unit (ZME) of the high-pressure pump is subjected to the test specifications in accordance with the intended current.
- the ZME controls the feed rate for the high pressure generation in the low pressure circuit of the high pressure pump.
- the delivery rate of the high pressure pump is measured in each test step and is the test criterion of the high pressure pump.
- a method of testing a high pressure pump includes the step of charging the high pressure pump with fluid before it is turned on. By filling the high pressure pump with fluid before it is turned on, it is ensured that the high pressure pump is lubricated by the fluid from the beginning of its operation, thereby reducing its wear.
- the method comprises switching on the high-pressure pump only after a return flow rate and / or a flow rate have been measured at the outputs of the high-pressure pump. This will ensure that the
- High-pressure pump is filled with a sufficient amount of fluid before it is turned on.
- the method comprises, by operating the high pressure pump to fill a high pressure accumulator with fluid and an outlet of the
- High-pressure accumulator already before switching on the high pressure pump, for example, by a suitable valve to throttle.
- the method may include an exhaust valve located at the outlet of the
- High-pressure accumulator is provided to adjust the fluid pressure to high-pressure accumulator to energize before switching on the high-pressure pump and thus to throttle the outlet of the high-pressure accumulator before switching on the high-pressure pump.
- the method does not include lowering the pressure in the high-pressure accumulator even when changing the test step below a predetermined minimum pressure, in particular a pressure of 200 bar.
- the method comprises measuring the pressure on the high-pressure side of the high-pressure pump, in particular the pressure in the high-pressure accumulator, and activating pressure regulation when the pressure exceeds a predetermined limit. In this way it is prevented that the high-pressure accumulator, the pressure regulating valve and / or the high-pressure pump are damaged by an excessive pressure.
- the method comprises controlling a metering unit of the high-pressure pump, in particular after warming up the high-pressure pump and before the start of the actual test method, over a predetermined period of time with a frequency in the range between 1 Hz and 10 Hz, in particular 2 Hz, around the Vent high-pressure pump and to avoid incorrect measurements that may result from the fact that air is trapped in the high-pressure pump.
- a hysteresis of the metering unit is minimized because sluggish behavior of the metering unit, which is its cause, for example. may have in a resin after a longer standstill and / or a longer storage, is prevented by the described clocked control.
- the invention also includes an apparatus for testing a high-pressure pump, in particular a high-pressure pump, which is provided for injecting fuel into an internal combustion engine
- a fluid reservoir configured to provide a fluid used to check the high pressure pump under test
- a low pressure pump configured to deliver fluid from the fluid reservoir into the high pressure pump to be tested
- a high pressure accumulator connected to a high pressure output of the high pressure pump
- a pressure regulating valve configured to regulate the pressure in the high pressure accumulator
- control device which is designed to control the low-pressure pump, the high pressure pump to be tested and the pressure regulating valve such that the testing device carries out a test method according to the invention.
- the device may in particular comprise at least one flow and / or pressure sensor which is designed to measure the flow rate and / or the pressure of fluid conveyed by the high-pressure pump and to provide the measurement result to the control device, such that the control device can control the test method taking into account the flow and / or pressure values measured by the at least one flow and / or pressure sensor.
- FIGURE shows a schematic view of an exemplary embodiment of a test device 1 for a high-pressure pump 8.
- the test apparatus 1 comprises a tank 2 for storing and providing a fluid ("test oil”), which is taken from the tank 2 during operation by a low pressure pump 4 and by a low pressure line 26 which is connected to the output of the low pressure pump 4, the high pressure pump to be tested.
- the high-pressure pump 8 comprises, at its inlet, which is connected to the low-pressure line 26, a metering unit 6 which is designed to feed the high-pressure pump 8 the fluid delivered by the low-pressure pump 4.
- the output side of the high pressure pump 8 is connected via a high pressure line 24 to a high pressure accumulator ("common rail”), which is filled in operation by the high pressure pump 8 with fluid.
- a high pressure accumulator commonly rail
- the high-pressure pump 8 additionally has a first return line 16, which makes it possible to recirculate excess fluid, which is used for cooling and lubricating the high-pressure pump 8 but not supplied to the high-pressure accumulator 10, into the tank 2.
- At least one pressure regulating valve 14 is provided at an outlet / outlet of the high pressure accumulator 10, which makes it possible to adjust the fluid pressure in the high pressure accumulator 10 to a desired value by changing the cross section of the outlet of the high pressure accumulator 10.
- An output side of the pressure regulating valve 14 is connected to a second return line 22, through which the fluid from the high-pressure accumulator 10 is returned to the tank 2.
- a control device 20 is connected via control lines 5, 7, 9, 15, which may be electrically, mechanically, hydraulically or pneumatically, connected to the low-pressure pump 4, the metering unit 6, the high-pressure pump 8 and the pressure regulating valve 14 and set, these components in operation via the control lines 5, 7, 9, 15 to control so that the test apparatus 1 performs the desired test method.
- At least one sensor 12 is provided on the high-pressure line 24 and / or on the high-pressure accumulator 10, which measures the pressure and / or the flow of the fluid in the high-pressure line 24 and makes the result available to the control device 20.
- a return sensor 18, 28 is provided on the two return lines 16, 22, which measures the pressure and / or the flow through the respective return line 16, 22 and makes its measurement results available to the control device 20.
- the high pressure pump 8 Before the high pressure pump 8 is started, it is filled with fluid from the tank 2 by operating the low pressure pump 4. For this purpose, a fluid pressure is generated by the low-pressure pump 4, which is greater than the opening pressure of the internal valves of the high-pressure pump 8. Only when a flow rate and / or a return quantity is measured by the sensors 12, 18 at the outputs of the high-pressure pump 8, the high-pressure pump 8 is started.
- the pressure regulating valve 14 is energized and thereby at least partially closed, so that when starting the high-pressure pump 8, in particular already after half a revolution of the high-pressure pump 8, in the high-pressure accumulator 10, an increased pressure of 200 bar, for example.
- the control is converted to precise pressure regulation in order to set the desired pressure in the high-pressure accumulator 10. Also by this measure, the lubrication of the high-pressure pump 8 is improved and minimizes the rubbing of the roller on the cam when starting the high-pressure pump 8. In addition, will - - Improves the contact between the roller and the cam, whereby the high-pressure pump 8 is less sensitive to dirt or other disorders.
- the pressure in the high pressure accumulator 10 and in the high pressure line 24 is not lowered below a predetermined minimum pressure of, for example, 200 bar to maintain sufficient lubrication of the high-pressure pump 8 and to minimize the rubbing of the roller on the associated cam.
- the metering unit 6 After warming up the high-pressure pump 8, the metering unit 6 is clocked before the beginning of the actual test procedure, for example, with a frequency in the range of 1 Hz to 10 Hz, in particular 2 Hz.
- the high-pressure pump 8 By a clocked driving the metering unit 6, the high-pressure pump 8 is vented and Erroneous measurements that may be caused by air trapped in the high pressure pump 8 are avoided.
- the wear of the high-pressure pump 8 to be tested is reduced and reproducible measurement results are generated reliably and with high accuracy.
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201580046509.2A CN106574594A (zh) | 2014-09-01 | 2015-07-13 | 用于高压泵的检查过程 |
BR112017002907A BR112017002907A2 (pt) | 2014-09-01 | 2015-07-13 | sequência de teste para bombas de alta pressão |
US15/506,846 US10012198B2 (en) | 2014-09-01 | 2015-07-13 | Test procedure for high-pressure pumps |
EP15736512.3A EP3189228A1 (de) | 2014-09-01 | 2015-07-13 | Prüfablauf für hochdruckpumpen |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102014217443.0 | 2014-09-01 | ||
DE102014217443.0A DE102014217443A1 (de) | 2014-09-01 | 2014-09-01 | Prüfablauf für Hochdruckpumpen |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2016034315A1 true WO2016034315A1 (de) | 2016-03-10 |
Family
ID=53541673
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2015/066002 WO2016034315A1 (de) | 2014-09-01 | 2015-07-13 | Prüfablauf für hochdruckpumpen |
Country Status (6)
Country | Link |
---|---|
US (1) | US10012198B2 (de) |
EP (1) | EP3189228A1 (de) |
CN (1) | CN106574594A (de) |
BR (1) | BR112017002907A2 (de) |
DE (1) | DE102014217443A1 (de) |
WO (1) | WO2016034315A1 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102014226565A1 (de) * | 2014-12-19 | 2016-06-23 | Robert Bosch Gmbh | Verfahren zur Prüfung einer Kraftstofffördereinrichtung, sowie ein Steuergerät und ein Werkstatt-Tester |
DE102017210250A1 (de) * | 2016-06-27 | 2017-12-28 | Robert Bosch Gmbh | Verfahren zur Erkennung einer Fehldosierung |
DE102017210147A1 (de) * | 2017-06-19 | 2018-12-20 | Robert Bosch Gmbh | Vorrichtung und Verfahren zur Rücklaufdruckeinstellung für einen Injektor |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SU823640A1 (ru) * | 1979-07-05 | 1981-04-23 | Институт Ядерной Энергетики Ан Белорусскойсср | Стенд дл кавитационных испытанийНАСОСОВ |
EP1197649A1 (de) * | 2000-10-12 | 2002-04-17 | Toyota Jidosha Kabushiki Kaisha | Hochdruckkraftstoffversorgungssystem und Vorrichtung |
DE102005000612A1 (de) * | 2005-01-03 | 2006-07-13 | Robert Bosch Gmbh | Verfahren zum Start einer Brennkraftmaschine |
DE102005020362A1 (de) * | 2005-05-02 | 2006-11-09 | Robert Bosch Gmbh | Steuerung eines Volumenstromregelventils und eines Druckventils mit veränderbarer PWM Frequenz |
DE102009003236A1 (de) * | 2009-05-19 | 2010-11-25 | Robert Bosch Gmbh | Fehlerlokalisation in einem Kraftstoff-Einspritzsystem |
DE102009045369A1 (de) * | 2009-10-06 | 2011-04-07 | Robert Bosch Gmbh | Verfahren zum Überprüfen der Funktionsfähigkeit einer Hochdruckpumpe |
DE102010027675A1 (de) * | 2010-07-20 | 2012-01-26 | Continental Automotive Gmbh | Verfahren zur Erkennung fehlerhafter Komponenten oder fehlerhafter Teilsysteme eines elektronisch geregelten Kraftstoffeinspritzsystems eines Verbrennungsmotors durch Evaluierung des Druckverhaltens |
Family Cites Families (13)
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DE19950232A1 (de) * | 1999-10-19 | 2001-04-26 | Bosch Gmbh Robert | Verfahren zur Kraftstoff-Erstbefüllung eines Kraftstoffversorgungssystems einer Brennkraftmaschine |
US6874480B1 (en) * | 2000-07-03 | 2005-04-05 | Combustion Dynamics Corp. | Flow meter |
JP4453623B2 (ja) * | 2005-07-19 | 2010-04-21 | 株式会社デンソー | 燃料噴射装置および燃料噴射装置の異常検出方法 |
US7581528B2 (en) * | 2006-03-17 | 2009-09-01 | Ford Global Technologies, Llc | Control strategy for engine employng multiple injection types |
JP4787208B2 (ja) * | 2007-05-18 | 2011-10-05 | ボッシュ株式会社 | 液化ガス燃料供給装置及び液化ガス燃料供給装置の高圧ポンプの駆動方法 |
CN201606314U (zh) * | 2009-12-04 | 2010-10-13 | 中国轻工业南宁设计工程有限公司 | 水泵快速启动装置 |
JP2014525533A (ja) * | 2011-08-09 | 2014-09-29 | クリーン エア パワー, インコーポレーテッド | 複数モードエンジンにおける前混合燃焼を制御するための方法及び装置 |
KR101273217B1 (ko) * | 2011-10-31 | 2013-06-12 | 주식회사 현대케피코 | Gdi 시스템용 고압 펌프를 위한 진동 시험 장치 |
US8831857B2 (en) * | 2012-03-07 | 2014-09-09 | Ford Motor Company Of Australia Limited | Method and system for estimating fuel composition |
US8961368B2 (en) * | 2012-10-10 | 2015-02-24 | Ford Global Technologies, Llc | Charge air cooler condensate purging cycle |
US9175615B2 (en) * | 2013-01-30 | 2015-11-03 | Ford Global Technologies, Llc | Method and system for engine control |
US9255542B2 (en) * | 2013-02-04 | 2016-02-09 | Ford Global Technologies, Llc | System and method for compensating biodiesel fuel |
US9429124B2 (en) * | 2013-02-12 | 2016-08-30 | Ford Global Technologies, Llc | Direct injection fuel pump |
-
2014
- 2014-09-01 DE DE102014217443.0A patent/DE102014217443A1/de not_active Withdrawn
-
2015
- 2015-07-13 BR BR112017002907A patent/BR112017002907A2/pt not_active Application Discontinuation
- 2015-07-13 US US15/506,846 patent/US10012198B2/en not_active Expired - Fee Related
- 2015-07-13 WO PCT/EP2015/066002 patent/WO2016034315A1/de active Application Filing
- 2015-07-13 EP EP15736512.3A patent/EP3189228A1/de not_active Withdrawn
- 2015-07-13 CN CN201580046509.2A patent/CN106574594A/zh active Pending
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SU823640A1 (ru) * | 1979-07-05 | 1981-04-23 | Институт Ядерной Энергетики Ан Белорусскойсср | Стенд дл кавитационных испытанийНАСОСОВ |
EP1197649A1 (de) * | 2000-10-12 | 2002-04-17 | Toyota Jidosha Kabushiki Kaisha | Hochdruckkraftstoffversorgungssystem und Vorrichtung |
DE102005000612A1 (de) * | 2005-01-03 | 2006-07-13 | Robert Bosch Gmbh | Verfahren zum Start einer Brennkraftmaschine |
DE102005020362A1 (de) * | 2005-05-02 | 2006-11-09 | Robert Bosch Gmbh | Steuerung eines Volumenstromregelventils und eines Druckventils mit veränderbarer PWM Frequenz |
DE102009003236A1 (de) * | 2009-05-19 | 2010-11-25 | Robert Bosch Gmbh | Fehlerlokalisation in einem Kraftstoff-Einspritzsystem |
DE102009045369A1 (de) * | 2009-10-06 | 2011-04-07 | Robert Bosch Gmbh | Verfahren zum Überprüfen der Funktionsfähigkeit einer Hochdruckpumpe |
DE102010027675A1 (de) * | 2010-07-20 | 2012-01-26 | Continental Automotive Gmbh | Verfahren zur Erkennung fehlerhafter Komponenten oder fehlerhafter Teilsysteme eines elektronisch geregelten Kraftstoffeinspritzsystems eines Verbrennungsmotors durch Evaluierung des Druckverhaltens |
Non-Patent Citations (1)
Title |
---|
See also references of EP3189228A1 * |
Also Published As
Publication number | Publication date |
---|---|
BR112017002907A2 (pt) | 2017-12-12 |
US20170254307A1 (en) | 2017-09-07 |
US10012198B2 (en) | 2018-07-03 |
DE102014217443A1 (de) | 2016-03-03 |
CN106574594A (zh) | 2017-04-19 |
EP3189228A1 (de) | 2017-07-12 |
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