EP2569519A1 - Verfahren zum betreiben einer brennkraftmaschine mit mehrstufiger ölpumpe - Google Patents
Verfahren zum betreiben einer brennkraftmaschine mit mehrstufiger ölpumpeInfo
- Publication number
- EP2569519A1 EP2569519A1 EP11723869A EP11723869A EP2569519A1 EP 2569519 A1 EP2569519 A1 EP 2569519A1 EP 11723869 A EP11723869 A EP 11723869A EP 11723869 A EP11723869 A EP 11723869A EP 2569519 A1 EP2569519 A1 EP 2569519A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- oil pressure
- oil
- internal combustion
- combustion engine
- camshaft
- 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.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M1/00—Pressure lubrication
- F01M1/02—Pressure lubrication using lubricating pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M1/00—Pressure lubrication
- F01M1/16—Controlling lubricant pressure or quantity
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M1/00—Pressure lubrication
- F01M1/18—Indicating or safety devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/34—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/34—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift
- F01L1/344—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear
- F01L1/3442—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear using hydraulic chambers with variable volume to transmit the rotating force
- F01L2001/3445—Details relating to the hydraulic means for changing the angular relationship
Definitions
- the invention relates to a method for operating an internal combustion engine, wherein in an oil circuit of the internal combustion engine, in particular for pressure circulation lubrication, a first oil pressure stage with a first minimum and maximum oil pressure level and at least one second oil pressure stage with a second minimum and maximum oil pressure level is generated by an oil pump, wherein the first minimum oil pressure level is less than or equal to the second minimum oil pressure level and the first maximum oil pressure level is less than the second maximum oil pressure level, wherein a camshaft of the internal combustion engine of an actuator hydraulically by means of an oil pressure from the oil circuit of the
- Internal combustion engines usually have a mechanically driven oil pump. In some applications, it is by a corresponding actuator or a
- Shift mechanism possible to approach two or more pressure levels with this oil pump with different oil pressure level or different value ranges in which the oil pressure moves depending on the operating condition of the internal combustion engine.
- the oil pump has a mechanically acting device for regulating the oil pressure.
- the internal combustion engine does not require the same, high oil pressure in each operating map point.
- the oil pressure can be lowered to low speeds and loads. Only when a corresponding, predetermined load and speed threshold is exceeded is switched to the higher second pressure level.
- the oil pressure is thus adapted to the current needs of the internal combustion engine.
- the power consumption of such a two-stage or multi-stage oil pump compared to a single-stage oil pump is lower.
- a problem of the two-stage oil pump is the diagnosis of the actuating mechanism. For this purpose, it is known to use a separate oil pressure sensor for each pressure stage.
- multistage oil pump therefore requires at least one additional pressure sensor.
- This additional sensor requires corresponding costs and requires space.
- Output signal of the integrated pressure sensor can be used for pressure monitoring.
- Camshaft adjuster (actuator for adjusting the camshaft) a hydraulic
- Has wing actuator which rotates the camshaft relative to the crankshaft and this is acted upon by an electrically actuated hydraulic valve with engine oil from the engine oil circuit.
- the invention is based on the object, a method of o.g. Kind regarding the
- a first adjustment speed of the camshaft is determined by the actuator, while the first oil pressure stage is generated by the oil pump, wherein for at least one second oil pressure stage, a second adjustment speed of the camshaft is determined by the actuator while the second oil pressure stage is generated by the oil pump, wherein at least a difference between the first and at least a second adjustment speed is determined, wherein a switching mechanism of the oil pump for switching between the oil pressure levels is classified as good, if an amount of difference equal to or greater as a predetermined differential value, and the switching mechanism of the oil pump for switching between the oil pressure levels is classified as defective when an amount of the difference is smaller than a predetermined difference value.
- Functionality of the switching mechanism of the oil pump without compensation, for example, by speed or load-related fluctuations in the oil pressure is achieved in that the first and at least a second adjustment speed at an identical
- Operating condition of the internal combustion engine can be determined.
- Additional monitoring of the operability of the oil pump itself is achieved in that in an operating state of the internal combustion engine, during which the first oil pressure stage is generated by the oil pump, the oil pressure is monitored by a pressure sensor.
- Oil pressure levels are achieved in that after determining the first
- a check of the switching mechanism of the oil pump for the different oil pressure levels at defined states of the internal combustion engine is achieved by the fact that the first and the second adjustment speed at least one predetermined operating point of the
- Internal combustion engine can be determined, regardless of the operating point, the respective oil pressure level is switched and the camshaft is adjusted.
- the at least one predetermined operating point of the internal combustion engine is selected such that a mudimale increase of pollutant emissions in the exhaust gas results.
- FIG. 1 is a schematic block diagram of an internal combustion engine for carrying out the method according to the invention
- Fig. 2 is a flow chart of a preferred embodiment of the invention
- Fig. 3 shows an operating map for an internal combustion engine.
- the invention relates to an internal combustion engine, as shown schematically in Fig. 1, with an engine block 10, an oil pump 12 and a Mötorölniklauf 14, which is in particular designed for circulation pressure lubrication.
- Mötorölnikmaschinelauf 14 for circulating pressure lubrication controllable hydraulic components are connected, the necessary for their operation operating fluid is provided by the engine oil of the engine oil circuit 14.
- the regulation of the fluid flow, that is, the hydraulic component flowing through the engine oil flow is effected by electrical control signals of a control electronics 22.
- Hydraulic component is a hydraulic camshaft adjuster 18 for adjusting a camshaft 16 with a hydraulic valve, which is designed for example as a solenoid valve.
- the actuator for the camshaft adjustment is integrated into the Mötorölnikank.
- the pressure prevailing in the Mötorölniklauf oil pressure is provided by the mechanically driven oil pump 12 in the Mötorölniklauf 14 available.
- the oil pump 12 has a
- Switching mechanism 20 to switch between different oil pressure levels.
- a first oil pressure stage is provided, wherein the oil pressure in response to a
- Oil pressure level fluctuates. Furthermore, at least one second oil pressure stage is provided in which the oil pressure fluctuates in a second range between a second minimum oil pressure value (oil pressure level) and a second maximum oil pressure value (oil pressure level) depending on an operating condition of the internal combustion engine.
- the first minimum oil pressure value is less than or equal to the second minimum oil pressure value
- the first maximum oil pressure value is smaller than the second maximum oil pressure value.
- an oil pressure sensor 24 is provided for monitoring the oil pressure.
- the camshaft adjustment varies at different speeds. The resulting angular velocity correlates with the oil pressure.
- the angular velocity can be measured by passing through a sufficient adjustment range with maximum activation of the solenoid valve of the camshaft adjuster 18.
- the angular velocity is additionally dependent on the engine speed and oil temperature and should be corrected via this. It is typically in a range that is well and safely measurable with devices available in engine controls.
- the angular velocity of the camshaft adjustment for monitoring the switching mechanism 20 of the oil pump 12 for different oil pressure levels. Due to the tolerance chain regarding, in particular, oil viscosity,
- Angular velocities are sufficiently pronounced, i. greater than or equal to one
- Switching mechanism 20 of the oil pump 12 is working properly. The first, low
- Oil pressure level is monitored by the pressure sensor.
- the second pressure stage is monitored by comparing the above described comparison of the measured adjustment speed of the
- Camshaft adjusting device 18 is evaluated at different oil pressure levels. If the speed of the camshaft adjustment is identical in both oil pressure stages, it can be assumed that the switching mechanism 20 of the oil pump 12 is not working properly. The oil pump 12 can only set a pressure or an oil pressure stage in this case.
- first the first and then the second oil pressure stage are driven at a constant operating point.
- constant operating point here refers to an operating state of the internal combustion engine in which not necessarily one of the second, higher oil pressure stages and also not necessarily a camshaft adjustment is required. In other words, the oil pressure stage and the camshaft adjustment are independent of the current
- Last speed point are excluded in this way.
- the impact on the Emissions due to the non-optimal camshaft position during the measurement are taken into account by a suitable choice of the constant operating point.
- the cost or installation space disadvantage of a second oil pressure sensor for the second oil pressure stage can be saved because no additional oil pressure sensor is required for monitoring whether the second pressure level is reached.
- a cost neutrality is achieved because the diagnosis of the second oil pressure stage is based on already existing in the internal combustion engine actuators and sensors.
- FIG. 2 shows by way of example a flow diagram of a preferred embodiment of the method according to the invention.
- a first step 100 will be
- Incoming conditions for the procedure checked. For example, it is checked whether a load, a rotational speed and a temperature of a coolant and the engine oil are in a predetermined range. If this is not the case even for one of the aforementioned parameters, the diagnosis of the camshaft is not carried out and jumped back to step 100 via a first branch 102 "no".
- the oil pump is operated in such a way that it provides a first pressure stage and the camshaft is adjusted.
- a third step 108 “camshaft measurement” is a
- Adjustment speed 1 of the camshaft during adjustment determined as angular velocity ⁇ [ms] for the first pressure stage.
- a fourth step 110 oil pump in
- the oil pump is operated such that it provides a second pressure level in the ⁇ i Vietnamesesburgsystem the internal combustion engine, wherein the pressure in ⁇ i Vietnameselaufsystem the internal combustion engine pressure is different from the corresponding pressure at the first pressure stage, and it is
- a fifth step 112 "Camshaft measurement”
- an adjustment speed 2 of the camshaft during the adjustment is determined as the angular speed ⁇ [ms] for the second pressure stage, in a sixth step 114
- Adjustment speed 2 for the second pressure stage is greater than the adjustment speed 1 for the first pressure stage. If the oil pump or the actuator for the pressure stages works correctly and generates a higher pressure in the ⁇ i Vietnameselaufsystem the internal combustion engine in the second pressure stage than in the first pressure stage, the adjustment speed must. 2 Thus, conversely, this is an indication of a correctly working oil pump or switching between the pressure levels. Therefore, from the sixth step 114 via a third branch 118, "yes” is entered to a seventh step 116 "Test completed, oil pump pressure stage actuator OK", if in step 114 the result of the test is "Verstell Albany 2> Verstell horrus 1?" yes is. If this is not the case, however, then a fourth branch 120 "no" to an eighth step 122 "test completed, actuator for pressure stages of the oil pump is not in order” jumped.
- FIG. 3 illustrates an operating map of an internal combustion engine, wherein a rotational speed n of the internal combustion engine is plotted on a horizontal axis 200 and an engine torque M or a load is plotted on a vertical axis 202.
- load speed map results in an operating range for the internal combustion engine, which is limited by a first graph 204, the horizontal axis 200 and the vertical axis 202.
- Map area 206 in which the first and second pressure stage of the oil pump can be driven.
- Map area 208 in which the diagnostic method described above can be performed, for which the following conditions must be fulfilled: both pressure levels must be permissible, an influence on the exhaust gas by the position jump of the camshaft must be low and An influence on the driving behavior of a vehicle equipped with the internal combustion engine by the position jump of the camshaft must be low. All of this is in the second
- Map area 208 is satisfied. The rest of the operating range outside the first
- Map area 206 is a third map area 210 in which only the second pressure stage can be driven. For this reason, this third map area 210 is not suitable for the diagnostic method described above.
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE201010019933 DE102010019933A1 (de) | 2010-05-08 | 2010-05-08 | Verfahren zum Betreiben einer Brennkraftmaschine mit mehrstufiger Ölpumpe |
PCT/EP2011/002164 WO2011141130A1 (de) | 2010-05-08 | 2011-05-02 | Verfahren zum betreiben einer brennkraftmaschine mit mehrstufiger ölpumpe |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2569519A1 true EP2569519A1 (de) | 2013-03-20 |
EP2569519B1 EP2569519B1 (de) | 2016-02-10 |
Family
ID=44462617
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP11723869.1A Active EP2569519B1 (de) | 2010-05-08 | 2011-05-02 | Verfahren zum betreiben einer brennkraftmaschine mit mehrstufiger ölpumpe |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP2569519B1 (de) |
CN (1) | CN102869858B (de) |
DE (1) | DE102010019933A1 (de) |
WO (1) | WO2011141130A1 (de) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2551509B (en) | 2016-06-20 | 2020-08-26 | Ford Global Tech Llc | An engine assembly comprising a camshaft driven oil pump |
CN107989786B (zh) * | 2017-11-25 | 2019-07-05 | 蚌埠市鑫源机电设备有限公司 | 一种分区域检测的泵运行调控系统 |
DE102019121153B3 (de) * | 2019-08-06 | 2020-10-29 | Iav Gmbh Ingenieurgesellschaft Auto Und Verkehr | Verfahren zur Steuerung einer Nockenwellenverstellung |
CN113357032B (zh) * | 2021-06-29 | 2022-06-03 | 东风汽车集团股份有限公司 | 高压油泵故障检测后处理方法及电子设备 |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07127407A (ja) * | 1993-11-05 | 1995-05-16 | Toyota Motor Corp | 内燃機関のバルブタイミング制御装置 |
DE19523533C2 (de) * | 1995-06-28 | 1998-06-18 | Eisenmann Siegfried A | Sauggeregelte Innenzahnradpumpe |
CA2159672C (en) * | 1994-10-17 | 2009-09-15 | Siegfried A. Eisenmann | A valve train with suction-controlled ring gear/internal gear pump |
US5529023A (en) | 1995-07-03 | 1996-06-25 | Boardman; Thomas K. | Grapnel boat anchor |
DE19533686C2 (de) * | 1995-09-12 | 1997-06-19 | Daimler Benz Ag | Regelbare Flügelzellenpumpe als Schmiermittelpumpe |
US6158404A (en) * | 1997-02-26 | 2000-12-12 | Aft Atlas Fahrzeugtechnik Gmbh | Apparatus for regulating the operation of an adjusting device |
JP3760566B2 (ja) | 1997-06-05 | 2006-03-29 | アイシン精機株式会社 | 弁開閉時期制御装置 |
US6257184B1 (en) * | 1998-08-10 | 2001-07-10 | Unisia Jecs Corporation | Apparatus and method for diagnosing of a hydraulic variable valve timing mechanism |
DE19959300A1 (de) * | 1999-12-09 | 2001-06-21 | Man B & W Diesel As Kopenhagen | Motor |
JP2001317320A (ja) * | 2000-05-09 | 2001-11-16 | Honda Motor Co Ltd | 内燃機関の潤滑装置 |
DE10064652B4 (de) * | 2000-12-22 | 2016-02-25 | Robert Bosch Gmbh | Verfahren und Vorrichtung zur schnellen Veränderung eines Drehmoments einer Brennkraftmaschine |
JP4100115B2 (ja) * | 2002-09-26 | 2008-06-11 | アイシン精機株式会社 | エンジンオイル供給装置 |
DE102005050775A1 (de) | 2005-10-24 | 2007-04-26 | Robert Bosch Gmbh | Motorölkreislauf für einen Verbrennungsmotor |
JP5190684B2 (ja) * | 2008-06-12 | 2013-04-24 | アイシン精機株式会社 | 車両用オイル供給装置 |
-
2010
- 2010-05-08 DE DE201010019933 patent/DE102010019933A1/de not_active Withdrawn
-
2011
- 2011-05-02 WO PCT/EP2011/002164 patent/WO2011141130A1/de active Application Filing
- 2011-05-02 CN CN201180023130.1A patent/CN102869858B/zh active Active
- 2011-05-02 EP EP11723869.1A patent/EP2569519B1/de active Active
Non-Patent Citations (1)
Title |
---|
See references of WO2011141130A1 * |
Also Published As
Publication number | Publication date |
---|---|
CN102869858A (zh) | 2013-01-09 |
WO2011141130A1 (de) | 2011-11-17 |
DE102010019933A1 (de) | 2011-11-10 |
EP2569519B1 (de) | 2016-02-10 |
CN102869858B (zh) | 2014-12-10 |
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