WO2012139606A1 - Dispositif de réglage servant à régler de manière variable au moins un taux de compression d'un moteur à combustion interne - Google Patents

Dispositif de réglage servant à régler de manière variable au moins un taux de compression d'un moteur à combustion interne Download PDF

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Publication number
WO2012139606A1
WO2012139606A1 PCT/EP2011/006120 EP2011006120W WO2012139606A1 WO 2012139606 A1 WO2012139606 A1 WO 2012139606A1 EP 2011006120 W EP2011006120 W EP 2011006120W WO 2012139606 A1 WO2012139606 A1 WO 2012139606A1
Authority
WO
WIPO (PCT)
Prior art keywords
compression ratio
adjusting device
internal combustion
operating state
combustion engine
Prior art date
Application number
PCT/EP2011/006120
Other languages
German (de)
English (en)
Inventor
Martin Bechtold
Jochen Betsch
Klaus Fieweger
Gerd KRÖNER
Markus Lengfeld
Alexander SCHEINDLIN
Dietmar Schröer
Georg Seidel
Original Assignee
Daimler Ag
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Daimler Ag filed Critical Daimler Ag
Publication of WO2012139606A1 publication Critical patent/WO2012139606A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D15/00—Varying compression ratio

Definitions

  • the invention relates to an adjusting device for variably setting at least one compression ratio of an internal combustion engine specified in the preamble of claim 1.
  • DE 10 2007 047 721 A1 discloses a motor control device for setting a variable compression ratio in an engine in an operating range in which a controlled auto-ignition of the engine is feasible.
  • Control device has a memory device in which at least one map is stored and retrievable.
  • map is at least one
  • Specified operating range in which a controlled auto-ignition of the engine is feasible.
  • the respective operating points in this operating range are each assigned a predetermined compression ratio, which from operating point to
  • Operating point can vary, and which is retrievable and adjustable by reaching the respective operating point of the engine control.
  • DE 102 20 598 B3 discloses a method for adjusting the ignition angle to the compression ratio of a spark ignition variable compression ratio engine.
  • a nominal ignition angle is taken from a map obtained during calibration.
  • a corrected ignition angle is obtained from the nominal ignition angle by means of a predetermined correction function of the dependency on the current compression ratio.
  • a transition phase with changing compression ratio is a Zündwinkelreserve to comply with a
  • Safety distance determined by a knock limit Furthermore, from the Nennzündwinkel or from a corrected firing angle for a stationary phase of operation using the firing angle obtained a firing angle for the transition phase.
  • the known methods have further potential to improve the operation of an adjusting device for variably setting at least one compression ratio of the internal combustion engine.
  • Such an adjusting device serves to set at least one compression ratio of an internal combustion engine, in particular a reciprocating internal combustion engine, a motor vehicle, in particular a passenger car, variable.
  • an internal combustion engine in particular a reciprocating internal combustion engine, a motor vehicle, in particular a passenger car, variable.
  • Internal combustion engine can be operated efficiently with only low fuel consumption.
  • the actuating device can be operated optionally in a first operating state or in at least one second operating state, the operating states having mutually different setting ranges in which the compression ratio can be set.
  • the compression ratio in the adjustment range of the first operation state is adjustable to other values than in the adjustment range of the second operation state.
  • the adjustment range of the first operating state is a total adjustment range.
  • This total adjustment range includes all by means of
  • Actuator possible adjustable compression ratios are.
  • the adjustment range of the second operating state is preferably a subarea of the total adjustment range. This means that all adjustable compression ratios are actually adjustable when the actuator is operated in the first operating state. Becomes In contrast, the adjusting device operated in the second operating state, so only a part of all possible adjustable compression ratios is adjustable. As a result, in the second operating state of the adjusting device, a limitation of the
  • the adjusting device according to the invention thus has a need-based and improved operability, since it makes it possible to restrict their total operating range and thus to be able to operate the internal combustion engine with a lower fuel consumption and thus with low C0 2 emissions. This can lead to the transient behavior of the
  • Combustion engine is slightly deteriorated, i. Load requirements are not implemented immediately and in full, and also reduces the possible engine full load.
  • the engine operating range is thus limited to the high compression ratio areas which offer significant fuel economy benefits.
  • common adjustment values of the compression ratio are higher than the adjustment ranges of common values of the remaining adjustment range (of the total adjustment range) of the first operating state.
  • all possible adjustable compression ratios are actually adjustable by means of the adjusting device, so only the higher and the highest compression ratios are adjustable in the second operating state, while the lower and in particular the lowest compression ratio in the second operating state not are more adjustable.
  • the engine control must ensure that the maximum load of the engine is reduced to avoid knocking the engine.
  • the adjusting device has the task of adapting the compression ratio to thermodynamic requirements of the internal combustion engine.
  • the setting of the compression ratio depends in particular on the speed and the load of the internal combustion engine, for example, by an accelerator pedal of the Motor vehicle is given by a driver this. Especially with a
  • a relatively low compression ratio is set. If the load is reduced in contrast, a higher compression ratio is set. If, as a result of the fluctuation of the accelerator pedal, the renewed requirement of a load which is higher in comparison with this, a relatively low compression ratio is set again in order to realize the required load. If there is thus a high number of load changes, this is conventionally accompanied by a high number of setting operations. That is, the compression ratio is often adjusted to match the internal combustion engine to the required loads
  • the adjusting device according to the invention now makes it possible to limit the total setting range to the second operating state such that only
  • the adjusting device of a person between the operating states is switchable.
  • a corresponding actuator such as a button or other switch, provided by means of which a driver of the Motor vehicle can switch between the operating states.
  • a dynamics of the accelerator pedal is limited.
  • a possible load of the internal combustion engine and thus an enrichment of a fuel-air mixture of the internal combustion engine in contrast to a possible load or a possible enrichment is restricted.
  • the driver may be encouraged to early change from the low gear to a higher gear of a transmission of the motor vehicle, or this may be in an automatic transmission or an automated manual transmission in the
  • the drawing shows in the figure a diagram of a Bacseinstell Schemes in which a variably adjustable compression ratio of a reciprocating engine is variably adjustable by means of a corresponding actuator, wherein a Sectioneinstell Scheme the Baceinstell Schemes is provided, in which only a limited number of possible adjustable compression ratios by means of the adjusting device is adjustable ,
  • the figure shows a total adjustment range 10 of such a control device.
  • the total adjustment range 10 includes all compression ratios or all values of the compression ratio, which by means of the adjusting device in the context of technical Conditions and a corresponding application of the adjusting device and the associated reciprocating internal combustion engine are adjustable.
  • the adjusting device makes it possible to adapt the compression ratio of thermodynamic requirements of the reciprocating internal combustion engine. This adjustment and thus the setting of the compression ratio depends in particular on a load of the reciprocating internal combustion engine, which is predetermined for example by an accelerator pedal and a corresponding position of the accelerator pedal by a driver of the trained example as a passenger car motor vehicle.
  • At low and medium loads of the reciprocating internal combustion engine are preferably high compression ratio, that is high
  • the compression ratio is particularly often set from higher values to lower value, if no appropriate countermeasures are taken.
  • the actuator is not only in a first operating state with the total adjustment range 10 but also in a second operating state operable.
  • the compression ratio within the first operating state In the first operating state, the compression ratio within the first operating state
  • Total setting range 10 and thus be set to all possible by means of the adjusting device adjustable values.
  • the second operating state is assigned a Sectioneinstell Group 12, which, as the figure can be seen, is a partial area of the Baceinstell Schemes 10.
  • the total adjustment range 10 is limited to the Generaleinstell Scheme 12.
  • the second operating state only the the the
  • Compression ratio is preferably set to relatively high values. At the same time, restrictions in a transient behavior of the
  • the driver of the motor vehicle can decide in which of
  • the actuator is operated.
  • a switch in particular a button, arranged in a cockpit of the example designed as a passenger cars motor vehicle by means of which by pressing this can be set by the driver of the first or second operating state.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)

Abstract

L'invention concerne un dispositif de réglage servant à régler de manière variable au moins un taux de compression d'un moteur à combustion interne d'un véhicule à moteur, en particulier d'une voiture particulière, ledit dispositif de réglage pouvant fonctionner sélectivement dans un premier état de fonctionnement ou dans au moins un deuxième état de fonctionnement, les états de fonctionnement présentant des plages de réglage (10, 12) différentes les unes des autres, dans lesquelles le taux de compression peut être réglé de manière variable.
PCT/EP2011/006120 2011-04-15 2011-12-07 Dispositif de réglage servant à régler de manière variable au moins un taux de compression d'un moteur à combustion interne WO2012139606A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011017178.9 2011-04-15
DE201110017178 DE102011017178A1 (de) 2011-04-15 2011-04-15 Stelleinrichtung zum variablen Einstellen wenigstens eines Verdichtungsverhältnisses einer Verbrennungskraftmaschine

Publications (1)

Publication Number Publication Date
WO2012139606A1 true WO2012139606A1 (fr) 2012-10-18

Family

ID=45099029

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2011/006120 WO2012139606A1 (fr) 2011-04-15 2011-12-07 Dispositif de réglage servant à régler de manière variable au moins un taux de compression d'un moteur à combustion interne

Country Status (2)

Country Link
DE (1) DE102011017178A1 (fr)
WO (1) WO2012139606A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114592976B (zh) * 2020-12-03 2023-03-24 长城汽车股份有限公司 基于vcr发动机的压缩比控制方法、装置及终端设备

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10220598B3 (de) 2002-05-08 2004-03-04 Siemens Ag Verfahren zum Anpassen des Zündwinkels an das Verdichtungsverhältnis einer Brennkraftmaschine
DE102007047721A1 (de) 2007-10-05 2009-04-09 Robert Bosch Gmbh Motorsteuerungsvorrichtung zur Einstellung eines variablen Verdichtungsverhältnisses und Verfahren zum Variieren des Verdichtungsverhältnisses bei einem Motor
EP2239446A1 (fr) * 2009-03-31 2010-10-13 Mazda Motor Corporation Stratégie d'injection d'un moteur à combustion interne, à injection directe et à auto-allumage
EP2264299A2 (fr) * 2009-06-15 2010-12-22 Volkswagen AG Procédé destiné au fonctionnement d'un moteur à combustion interne doté d'un piston élévateur

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10220598B3 (de) 2002-05-08 2004-03-04 Siemens Ag Verfahren zum Anpassen des Zündwinkels an das Verdichtungsverhältnis einer Brennkraftmaschine
DE102007047721A1 (de) 2007-10-05 2009-04-09 Robert Bosch Gmbh Motorsteuerungsvorrichtung zur Einstellung eines variablen Verdichtungsverhältnisses und Verfahren zum Variieren des Verdichtungsverhältnisses bei einem Motor
EP2239446A1 (fr) * 2009-03-31 2010-10-13 Mazda Motor Corporation Stratégie d'injection d'un moteur à combustion interne, à injection directe et à auto-allumage
EP2264299A2 (fr) * 2009-06-15 2010-12-22 Volkswagen AG Procédé destiné au fonctionnement d'un moteur à combustion interne doté d'un piston élévateur

Also Published As

Publication number Publication date
DE102011017178A1 (de) 2012-01-19

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