DE19549076A1 - Method for suppressing the jerking of an internal combustion engine used to drive a motor vehicle during the transition from pull to push operation - Google Patents
Method for suppressing the jerking of an internal combustion engine used to drive a motor vehicle during the transition from pull to push operationInfo
- Publication number
- DE19549076A1 DE19549076A1 DE19549076A DE19549076A DE19549076A1 DE 19549076 A1 DE19549076 A1 DE 19549076A1 DE 19549076 A DE19549076 A DE 19549076A DE 19549076 A DE19549076 A DE 19549076A DE 19549076 A1 DE19549076 A1 DE 19549076A1
- Authority
- DE
- Germany
- Prior art keywords
- cylinder
- transition
- internal combustion
- cylinders
- combustion engine
- 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.)
- Withdrawn
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
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/14—Introducing closed-loop corrections
- F02D41/1497—With detection of the mechanical response of the engine
-
- 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
- F02D41/008—Controlling each cylinder individually
- F02D41/0087—Selective cylinder activation, i.e. partial cylinder operation
-
- 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
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)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
- Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
Description
Die Erfindung betrifft ein Verfahren zur Unterdrückung des beim Übergang von Zug- auf Schubbetrieb auftretenden Ruckelns einer zum Antrieb eines Kraftfahrzeuges dienen den Brennkraftmaschine gemäß dem Oberbegriff des Patent anspruchs.The invention relates to a method for suppression of the one occurring during the transition from train to push operation Jerking serve to drive a motor vehicle the internal combustion engine according to the preamble of the patent demanding
Mit DE 35 13 656 A1 ist eine Brennstoff-Einspritzanord nung für einen Mehrzylindermotor beschrieben, bei der ein solches Verfahren angewendet wird. Bei diesem bekannten Verfahren werden die Zylinder des Motors in Gruppen auf geteilt und die Gruppen werden bei Vorliegen der Voraus setzungen für eine Schubabschaltung nacheinander abge schaltet, so daß die Zahl der arbeitenden Zylinder all mählich abnimmt. Damit verringert sich auch das Motor drehmoment allmählich und das Ruckeln der Brennkraftma schine kann reduziert werden.DE 35 13 656 A1 is a fuel injection arrangement described for a multi-cylinder engine in which a such procedure is applied. In this well-known The engine cylinders are moved in groups divided and the groups are made in advance settings for a fuel cut-off in succession switches so that the number of working cylinders all gradually decreases. This also reduces the engine torque gradually and the jerking of the internal combustion engine machine can be reduced.
Bei den im Schub auftretenden niedrigen Saugrohrabsolut drücken wird aber die Zylinderladung der noch gefeuerten Zylindergruppen nur unvollständig verbrannt. Dadurch steigt die Emission unverbrannter Kohlenwasserstoffe.Absolutely with the low intake manifold occurring in the thrust but will press the cylinder charge of the still fired Cylinder groups burned incompletely. Thereby the emission of unburned hydrocarbons increases.
Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren nach dem Oberbegriff des Patentanspruches so zu verbes sern, daß die Emission unverbrannter Kohlenwasserstoffe deutlich reduziert wird.The invention has for its object a method to verbes according to the preamble of the claim that the emission of unburned hydrocarbons is significantly reduced.
Diese Aufgabe wird erfindungsgemäß durch die im kenn zeichnenden Teil des Patentanspruches genannten Merkmale gelöst.This object is achieved by the in the kenn Characterizing part of the claim mentioned features solved.
Vor allem im Schubbetrieb mit der dabei vorliegenden ge ringen Zylinderfüllung verbessert sich mit fettem Gemisch die Verbrennungsstabilität erheblich und die Ruckelnei gung des Fahrzeuges nimmt deutlich ab. Der Zylinder bzw. die Zylindergruppe ohne Einspritzung pumpt nur Luft. Der darin enthaltene Sauerstoffanteil wird im Katalysator ge speichert und ermöglicht die Oxidation des fetten Gemi sches der anderen Zylinder. Bei in der Summe aller Zylin der magerem Gemisch verbessern sich auch die HC- und CO- Emissionen am Abgasrohrende gegenüber einem Gesamtgemisch von Lambda = 1. Die Stickoxidkonvertierung verschlechtert sich zwar gleichzeitig. Aufgrund der niedrigen NOx-Roh emissionen im Schub ist der Einfluß auf die Menge der Ge samtstickoxide jedoch sehr gering.Especially in overrun with the present ge wrestling cylinder filling improves with rich mixture the combustion stability considerably and the bucking egg vehicle consumption decreases significantly. The cylinder or the cylinder group without injection pumps only air. Of the contained oxygen content is ge in the catalyst stores and enables the oxidation of the fat gemi other cylinders. In the sum of all cylins the lean mixture also improve the HC and CO Emissions at the exhaust pipe end compared to a total mixture von Lambda = 1. The nitrogen oxide conversion deteriorates at the same time. Due to the low NOx raw Thrust emissions are the influence on the amount of Ge however, velvet nitrogen oxides are very low.
Ein Ausführungsbeispiel des erfindungsgemäßen Verfahrens ist nachstehend anhand eines Flußdiagrammes näher erläu tert.An embodiment of the method according to the invention is explained below with reference to a flow chart tert.
Die Steuereinheit prüft während des normalen Motorbetrie bes 1 in einem ersten Verfahrensschritt 2 ständig, ob ein Drehzahlverhalten vorliegt, welches eine Zylinderabschal tung zweckmäßig macht. Dieses liegt für den angestrebten Zweck vor bei Motordrehzahlen zwischen Leerlaufdrehzahl und einer Drehzahl von Leerlauf plus ca. 200 min-1, wobei dieser Drehzahlwert so wie die Leerlaufdrehzahl auch va riabel in Abhängigkeit von der Motortemperatur sein kann. Wird eine solche Drehzahl erkannt, dann wird in einem weiteren Verfahrensschritt 3 geprüft, ob Schubbetrieb ge geben ist. Ist dies der Fall, dann wird nach einem Zeit verzug 4 von etwa 0 bis 0,5 s in einem folgenden Verfah rensschritt 5 die Kraftstoffzufuhr zu einem Zylinder oder einer ersten Gruppe von Zylindern gesperrt. Bei einer Vier-Zylinder-Brennkraftmaschine wird vorzugsweise die Kraftstoffzufuhr zu einem Zylinder gesperrt. Gleichzeitig wird in diesem Verfahrensschritt 5 das Gemisch der noch befeuerten Zylinder angefettet auf einen Wert von Lambda = 0,7 bis 0,9. Dieser Zustand wird solange aufrechterhal ten, bis wieder Gas gegeben wird oder die Drehzahl unter den für die Zylinderabschaltung nach dem Verfahrens schritt 2 definierten Wert sinkt.The control unit constantly checks during normal engine operation 1 in a first method step 2 whether there is a speed behavior which makes a cylinder shutdown device expedient. This is for the intended purpose at engine speeds between idling speed and a speed of idling plus approx. 200 min -1 , whereby this speed value, like the idling speed, can also be variable depending on the engine temperature. If such a speed is recognized, then it is checked in a further method step 3 whether overrun is given. If this is the case, then after a time delay 4 of approximately 0 to 0.5 s in a subsequent procedural step 5, the fuel supply to a cylinder or a first group of cylinders is blocked. In a four-cylinder internal combustion engine, the fuel supply to a cylinder is preferably blocked. At the same time, in this method step 5 the mixture of the still fired cylinders is enriched to a value of lambda = 0.7 to 0.9. This state is maintained until the gas is turned on again or the engine speed drops below the value defined for cylinder deactivation in step 2 .
Infolge des fetten Gemisches in den gefeuerten Zylindern wird dort eine stabile Verbrennung erzielt, durch welche die Ruckelneigung deutlich abnimmt. Da während dieser Zeit die Drosselklappe geschlossen ist, dampft infolge des Unterdruckes der Kraftstoff-Wandfilm der Ansaugwege schnell ab. Zusammen mit dieser abdampfenden Kraftstoff menge und dem angefetteten Gemisch der gefeuerten Zylin der sowie der vom ungefeuerten Zylinder gepumpten Luft ergibt sich vor dem Katalysator eine Lambda < 1 entspre chende Abgaszusammensetzung. Dieses in Summe magere Ge misch führt zu verbesserten HC- und CO-Abgaswerten gegen über einem Lambda = 1. Die Stickoxidkonvertierung ver schlechtert sich zwar gleichzeitig, jedoch aufgrund der niedrigen NOx-Rohemissionen im Schub ist der Einfluß auf die Gesamtstickoxide gering.As a result of the rich mixture in the fired cylinders there is a stable combustion, through which the tendency to jerky decreases significantly. Because during this The time the throttle valve is closed vapors as a result the negative pressure of the fuel wall film of the intake paths quickly. Along with this evaporating fuel amount and the greased mixture of the fired cylin and the air pumped by the unfired cylinder there is a lambda <1 in front of the catalytic converter appropriate exhaust gas composition. This overall lean Ge mixed leads to improved HC and CO exhaust gas values over a lambda = 1. The nitrogen oxide conversion ver deteriorates at the same time, but due to the low NOx raw emissions in the thrust is the influence on the total nitrogen oxides are low.
Nach dem Sperren der Kraftstoffzufuhr zu einer Gruppe von Zylindern wird in einem weiteren Verfahrensschritt 6 durch die Steuereinheit geprüft, ob die Voraussetzungen für eine Schubabschaltung gegeben sind. Ist dies der Fall, dann wird mit dem Verfahrensschritt 7 die Schub abschaltung ausgelöst. Fällt eine der Bedingungen für Schubabschaltung weg, dann wird auf normalen Motorbetrieb 1 oder Einzelzylinderabschaltung zurückgegangen. After the fuel supply to a group of cylinders has been blocked, the control unit checks in a further method step 6 whether the conditions for an overrun fuel cut-off are met. If this is the case, then the overrun cutoff is triggered with method step 7 . If one of the conditions for overrun cut-off no longer applies, normal engine operation 1 or single-cylinder cut-out is reverted to.
Wird bei dem Verfahrensschritt 2 eine Drehzahl außerhalb der für eine Zylinderabschaltung vorgesehenen Drehzahl erkannt, dann wird gemäß Verfahrensschritt 6 geprüft, ob die Bedingungen für Schubabschaltung vorliegen. Wenn dies der Fall ist, dann erfolgt nach Verfahrensschritt 7 Schubabschaltung; wenn nicht, wird zu normalem Motorbe trieb 1 zurückgegangen.If a speed outside the speed provided for a cylinder deactivation is detected in method step 2 , then it is checked according to method step 6 whether the conditions for overrun cut-off exist. If this is the case, then fuel cutoff takes place after method step 7 ; if not, normal engine operation is reduced to 1 .
Wird bei dem Verfahrensschritt 3 erkannt, daß kein Schub betrieb vorliegt, wird auf Verfahrensschritt 6 gegangen, bei dem geprüft wird, ob die Bedingungen für Schubab schaltung vorliegen. Wenn dies der Fall ist, erfolgt nach Verfahrensschritt 7 Schubabschaltung, wenn nicht, wird zu normalem Motorbetrieb 1 zurückgegangen.If it is recognized in step 3 that there is no overrun operation, step 6 is followed , in which it is checked whether the conditions for overrun shutdown are present. If this is the case, fuel cutoff takes place after method step 7 , if not, normal engine operation 1 is reverted to.
Der Vorteil der vorliegenden Erfindung ist insbesondere darin zu sehen, daß neben einem gedämpften Drehmomentab bau beim Übergang von Zug- auf Schubbetrieb einer Brenn kraftmaschine und dem damit zu vermeidenden Ruckeln eines damit angetriebenen Kraftfahrzeugs eine stabile und voll ständige Verbrennung der Zylinderladung und damit eine Reduzierung der Emission unverbrannter Kohlenwasserstoffe erzielt wird.The advantage of the present invention is particular to see that in addition to a damped torque build a transition during the transition from train to push operation engine and the jerking to be avoided thus driven motor vehicle a stable and full constant combustion of the cylinder charge and thus a Reduction of unburned hydrocarbon emissions is achieved.
Claims (1)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19549076A DE19549076A1 (en) | 1995-12-29 | 1995-12-29 | Method for suppressing the jerking of an internal combustion engine used to drive a motor vehicle during the transition from pull to push operation |
DE59609749T DE59609749D1 (en) | 1995-12-29 | 1996-12-12 | Method for suppressing the jerking of an internal combustion engine used to drive a motor vehicle during the transition from pull to push operation |
EP96119903A EP0781911B1 (en) | 1995-12-29 | 1996-12-12 | Method to suppress vibrations from an engine driving a vehicle during the transition from acceleration to deceleration |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19549076A DE19549076A1 (en) | 1995-12-29 | 1995-12-29 | Method for suppressing the jerking of an internal combustion engine used to drive a motor vehicle during the transition from pull to push operation |
Publications (1)
Publication Number | Publication Date |
---|---|
DE19549076A1 true DE19549076A1 (en) | 1997-07-03 |
Family
ID=7781606
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19549076A Withdrawn DE19549076A1 (en) | 1995-12-29 | 1995-12-29 | Method for suppressing the jerking of an internal combustion engine used to drive a motor vehicle during the transition from pull to push operation |
DE59609749T Expired - Lifetime DE59609749D1 (en) | 1995-12-29 | 1996-12-12 | Method for suppressing the jerking of an internal combustion engine used to drive a motor vehicle during the transition from pull to push operation |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE59609749T Expired - Lifetime DE59609749D1 (en) | 1995-12-29 | 1996-12-12 | Method for suppressing the jerking of an internal combustion engine used to drive a motor vehicle during the transition from pull to push operation |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0781911B1 (en) |
DE (2) | DE19549076A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006039533B4 (en) * | 2005-08-24 | 2017-08-17 | GM Global Technology Operations LLC (n. d. Ges. d. Staates Delaware) | Fuel delivery control system and method for deactivating fuel delivery |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2992361B1 (en) * | 2012-06-22 | 2014-07-11 | Peugeot Citroen Automobiles Sa | METHOD FOR CONTROLLING A HEAT ENGINE |
US9212616B2 (en) * | 2012-07-13 | 2015-12-15 | Robert Bosch Gmbh | Fuel shut-off command with adaptive cruise control |
Citations (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3513656A1 (en) * | 1984-04-17 | 1985-10-24 | Fuji Jukogyo K.K., Tokio/Tokyo | FUEL INJECTION ARRANGEMENT FOR A MULTI-CYLINDER ENGINE |
DE3521551A1 (en) * | 1985-06-15 | 1986-12-18 | Robert Bosch Gmbh, 7000 Stuttgart | METHOD FOR CONTROLLING AND / OR REGULATING OPERATING CHARACTERISTICS OF AN INTERNAL COMBUSTION ENGINE |
US4655187A (en) * | 1984-10-13 | 1987-04-07 | Lucas Industries Public Limited Company | Fuel control system |
DE3630563A1 (en) * | 1986-09-09 | 1988-03-10 | Bosch Gmbh Robert | Electronic control device for a fuel injection system of an internal combustion engine |
DE3911016A1 (en) * | 1988-04-06 | 1989-10-26 | Ficht Gmbh | Method for the operation of a two-stroke internal combustion engine |
DE3537531C2 (en) * | 1984-10-22 | 1990-04-19 | Fuji Jukogyo K.K., Tokio/Tokyo, Jp | |
EP0501541A1 (en) * | 1991-02-28 | 1992-09-02 | General Motors Corporation | Method and apparatus for controlling fuel injection |
US5181496A (en) * | 1990-10-30 | 1993-01-26 | Mitsubishi Denki Kabushiki Kaisha | Air/fuel ratio control apparatus in an internal combustion engine |
DE4310145A1 (en) * | 1993-03-29 | 1994-04-07 | Daimler Benz Ag | Multi-cylinder IC engine with at least two groups of cylinders - has individual air-fuel mixture supply, and exhaust gas pipelines assigned to the cylinder groups and opening out into common exhaust gas pipe. |
DE4236922A1 (en) * | 1992-10-31 | 1994-05-05 | Bosch Gmbh Robert | Regulating fuel-air mixture of IC engine after over-run - registering over-run and enriching mixture for controlled period afterwards to compensate for excess oxygen referenced by upstream exhaust probe |
DE4335762A1 (en) * | 1992-10-29 | 1994-05-05 | Daimler Benz Ag | Fuel-injected two-stroke IC engine adaptive misfire control |
DE3901109C2 (en) * | 1988-01-18 | 1994-07-07 | Hitachi Ltd | Adaptive control device for the air-fuel ratio of an internal combustion engine |
DE4321333A1 (en) * | 1993-06-26 | 1995-01-05 | Bosch Gmbh Robert | Method and device for controlling a drive unit of a vehicle |
DE4342333A1 (en) * | 1993-12-11 | 1995-06-14 | Bosch Gmbh Robert | Control of IC engine fuel injection |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS54163226A (en) * | 1978-06-16 | 1979-12-25 | Nissan Motor | Device for controlling number of cylinders to be supplied with fuel |
JPS562432A (en) * | 1979-06-22 | 1981-01-12 | Nissan Motor Co Ltd | Shock reducing device for number of cylinder controlling engine |
JPS5874841A (en) * | 1981-10-28 | 1983-05-06 | Nissan Motor Co Ltd | Cylinder number-controlled engine |
GB9004190D0 (en) * | 1990-02-23 | 1990-04-18 | Lucas Ind Plc | Method and apparatus for controlling engine torque and wheel spin |
WO1993013311A1 (en) * | 1991-12-26 | 1993-07-08 | Mitsubishi Jidosha Kogyo Kabushiki Kaisha | Automobile engine |
-
1995
- 1995-12-29 DE DE19549076A patent/DE19549076A1/en not_active Withdrawn
-
1996
- 1996-12-12 EP EP96119903A patent/EP0781911B1/en not_active Expired - Lifetime
- 1996-12-12 DE DE59609749T patent/DE59609749D1/en not_active Expired - Lifetime
Patent Citations (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3513656A1 (en) * | 1984-04-17 | 1985-10-24 | Fuji Jukogyo K.K., Tokio/Tokyo | FUEL INJECTION ARRANGEMENT FOR A MULTI-CYLINDER ENGINE |
US4655187A (en) * | 1984-10-13 | 1987-04-07 | Lucas Industries Public Limited Company | Fuel control system |
DE3537531C2 (en) * | 1984-10-22 | 1990-04-19 | Fuji Jukogyo K.K., Tokio/Tokyo, Jp | |
DE3521551A1 (en) * | 1985-06-15 | 1986-12-18 | Robert Bosch Gmbh, 7000 Stuttgart | METHOD FOR CONTROLLING AND / OR REGULATING OPERATING CHARACTERISTICS OF AN INTERNAL COMBUSTION ENGINE |
EP0205916B1 (en) * | 1985-06-15 | 1989-08-23 | Robert Bosch Gmbh | Method for controlling and/or regulating the operating caracteristics of a combustion engine |
DE3630563A1 (en) * | 1986-09-09 | 1988-03-10 | Bosch Gmbh Robert | Electronic control device for a fuel injection system of an internal combustion engine |
DE3901109C2 (en) * | 1988-01-18 | 1994-07-07 | Hitachi Ltd | Adaptive control device for the air-fuel ratio of an internal combustion engine |
DE3911016A1 (en) * | 1988-04-06 | 1989-10-26 | Ficht Gmbh | Method for the operation of a two-stroke internal combustion engine |
US5181496A (en) * | 1990-10-30 | 1993-01-26 | Mitsubishi Denki Kabushiki Kaisha | Air/fuel ratio control apparatus in an internal combustion engine |
EP0501541A1 (en) * | 1991-02-28 | 1992-09-02 | General Motors Corporation | Method and apparatus for controlling fuel injection |
DE4335762A1 (en) * | 1992-10-29 | 1994-05-05 | Daimler Benz Ag | Fuel-injected two-stroke IC engine adaptive misfire control |
DE4236922A1 (en) * | 1992-10-31 | 1994-05-05 | Bosch Gmbh Robert | Regulating fuel-air mixture of IC engine after over-run - registering over-run and enriching mixture for controlled period afterwards to compensate for excess oxygen referenced by upstream exhaust probe |
DE4310145A1 (en) * | 1993-03-29 | 1994-04-07 | Daimler Benz Ag | Multi-cylinder IC engine with at least two groups of cylinders - has individual air-fuel mixture supply, and exhaust gas pipelines assigned to the cylinder groups and opening out into common exhaust gas pipe. |
DE4321333A1 (en) * | 1993-06-26 | 1995-01-05 | Bosch Gmbh Robert | Method and device for controlling a drive unit of a vehicle |
DE4342333A1 (en) * | 1993-12-11 | 1995-06-14 | Bosch Gmbh Robert | Control of IC engine fuel injection |
Non-Patent Citations (1)
Title |
---|
SPICHER,Ulrich, SCHÜERS,Andreas: Einfluß der Schubabschaltung auf den Verbrennungsablauf. In. MTZ Motortechnische Zeitschrift 51, 1990, 2, S.82-87 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006039533B4 (en) * | 2005-08-24 | 2017-08-17 | GM Global Technology Operations LLC (n. d. Ges. d. Staates Delaware) | Fuel delivery control system and method for deactivating fuel delivery |
Also Published As
Publication number | Publication date |
---|---|
EP0781911A2 (en) | 1997-07-02 |
EP0781911B1 (en) | 2002-10-02 |
EP0781911A3 (en) | 1999-03-03 |
DE59609749D1 (en) | 2002-11-07 |
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OM8 | Search report available as to paragraph 43 lit. 1 sentence 1 patent law | ||
8141 | Disposal/no request for examination |