CN102434303A

CN102434303A - Method for starting multi-cylinder internal combustion engine of vehicle, involves igniting fuel/air mixture into cylinder in compression stroke, where ignition is performed in cylinder at predeterminable ignition angle of cylinder

Info

Publication number: CN102434303A
Application number: CN2011102938357A
Authority: CN
Inventors: E.卡尔瓦; K.赖; A.施密特; B.希勒; U.西贝尔; C.格斯特劳尔
Original assignee: Robert Bosch GmbH
Current assignee: Robert Bosch GmbH
Priority date: 2010-09-28
Filing date: 2011-09-27
Publication date: 2012-05-02
Anticipated expiration: 2031-09-27
Also published as: KR20120032445A; FR2965302A1; DE102010041504B4; DE102010041504A1; FR2965302B1

Abstract

The method involves igniting fuel/air mixture into a compression cylinder (10) in a compression stroke. The ignition is performed in the cylinder at a predeterminable ignition angle of the cylinder, where the predeterminable ignition angle of the cylinder is larger than a determined crank angle of the cylinder. The predetermined ignition angle of the cylinder is selected such that rotational torque acting on a crankshaft (50) is maximized, where the torque is generated by the cylinder. Fuel is injected into the cylinder at a preset injection angle of the cylinder. Independent claims are also included for the following: (1) a computer program comprising a set of instructions to perform a method for starting a multi-cylinder internal combustion engine (2) an electrical storage medium for a control and/or regulating device of an internal combustion engine (3) a control and/or regulating device for a combustion engine.

Description

The method and apparatus that is used for controlling combustion engine

Technical field

The present invention relates to be used for the method and apparatus of controlling combustion engine.

Background technique

For start-stop system, the situation that is known as " unthinking " is meant that in the stopped process of internal-combustion engine, the driver is such as triggering the starting hope through handling accelerator pedal in these situations.These situations that " unthink " are being represented crucial situation for driving comfort, although must implement resetting of internal-combustion engine apace because internal-combustion engine still rotates.

General in the prior art more known systems attempt giving once more internal-combustion engine ignition when the internal-combustion engine coasting for these systems.Restart the course of injection that in the coasting of internal-combustion engine, cuts off in this case and give internal-combustion engine ignition.Control apparatus detects the current cylinder that is in the compression stroke.Inject fuel in this cylinder and light.

If but current engine speed is too low, possibly be that the torque that in current igniting process, is produced is not enough to be used for make once more internal-combustion engine to quicken so, that is to say that internal-combustion engine can stop and such as carrying out auxiliary starter by means of starter motor.This will spend some times, thereby let the driver feel interference is arranged.

Summary of the invention

Be to have improved the reliability of resetting of internal-combustion engine with respect to this advantage of the present invention.Therefore enlarged speed range, starting inertia operating internal combustion engine successfully again in this speed range.

When combustion intensity slowly weakens, cut off course of injection, that is to say in cylinder, not have the fuel-air mixture that to light.Direct-injection internal combustion engine can spray in the moment that can freely select.Therefore especially needn't with the synchronous situation of crank under spray.Because internal-combustion engine also in running, so change the inflation in the cylinder by suction valve that is coupled through camshaft and outlet valve, that is to say to be filled with fresh air in the cylinder all the time.Therefore spray in can cylinder arbitrarily when detecting start request and produce the fuel-air mixture that to light, thereby can in these cylinders, light a fire at internal-combustion engine.

By the present invention,, also light a fire in the acting cylinder in being in expansion stroke except the moment at start request is in the compression cylinder in the compression stroke and lights fuel.Though the efficient of the burning in the acting cylinder is high not as the efficient of the burning in the compression cylinder, because the burning emphasis is slower comparatively speaking.But however said burning also has such advantage, promptly produces additional torque, and this has improved the possibility of resetting of the success of internal-combustion engine.

If with the acting cylinder can predetermined firing angle in the acting cylinder, light fuel, that just can control the combustion case in the cylinder that does work especially effectively.If with compression cylinder can in compression cylinder, light fuel by predetermined firing angle, that just can control the combustion case in the compression cylinder especially effectively.

If that so selects compression cylinder can predetermined firing angle; Make the torque that produces through the burning in the compression cylinder become maximum; This method is reliable especially for resetting so, because the possibility that the rotating speed of the internal-combustion engine of successfully gathering coasting is descended through maximized torque maximizes.If that so selects the acting cylinder can predetermined firing angle, make the torque maximization that acts on crank that produces through the acting cylinder, this has just caused the extra high possibility of resetting of the success of internal-combustion engine so.

If that confirms the acting cylinder so in advance can predetermined firing angle, make its detected degree in crank angle greater than the acting cylinder, the advantage of doing so like this is directly in this acting cylinder, to spray.This method is then simple especially, because needn't guarantee that the fuel that can light is arranged in the cylinder that will light a fire through additional measure.If compression cylinder can predetermined firing angle greater than the detected degree in crank angle of compression cylinder, so internal-combustion engine reset just soon especially get in compression stroke and surpass the firing angle of compression cylinder because needn't wait until another cylinder.

If with the acting cylinder can predetermined angle of attack in the acting cylinder burner oil, that just can control mixture formation in the cylinder that does work especially effectively.

If with compression cylinder can predetermined angle of attack in the compression cylinder burner oil, that just can control the combustion case in the compression cylinder particularly well.

Description of drawings

Accompanying drawing shows a kind of particularly advantageous mode of execution by method of the present invention.Wherein:

Fig. 1 is the schematic representation of the structure of internal-combustion engine;

Fig. 2 is angle of attack and the firing angle that is used for different multi-cylinder engines;

Fig. 3 is the ignition order of four-cylinder internal combustion engine;

Fig. 4 is the ignition order of six-cylinder engine;

Fig. 5 is the ignition order of eight cylinder IC engines;

Fig. 6 is the flow chart by method of the present invention.

Embodiment

Fig. 1 shows the cylinder 10 of internal-combustion engine, and this cylinder 10 has firing chamber 20 and piston 30, and said piston 30 usefulness connecting rods 40 are connected with crank 50.Said piston 30 moves up and down in known manner.The turning point of motion is called the dead point.Be called upper dead center from moving upward to the transformation that moves downward, and be called lower dead centre from moving downward to the transformation that moves upward.The angular orientation of crank 50, promptly so-called crankangle defines with respect to upper dead center with common mode.Crank sensor 220 detects the angular orientation of crank 50.

The air that when piston 30 moves downward, will remain to be burnt in known manner through suction tude 80 is drawn in the said firing chamber 20.This is called suction stroke aspirating stroke in other words.The air that will burn through outlet pipe 90 pushes when piston 30 moves upward from firing chamber 20.This is commonly referred to exhaust stroke.Amount through suction tude 80 inhaled airs is passed through air dosing devices, and just throttle valve 100 is regulated in an embodiment, and the position of this modulating valve 100 is confirmed by control apparatus 70.

Inject fuel into from suction tude 80 and produce fuel-air mixture in the inhaled air and in firing chamber 20 through being arranged in straight spray valve 110 in the firing chamber 20.Amount through said straight spray valve 110 injected fuel is confirmed through the endurance and/or the intensity of trigger signal by said control apparatus 70 usually.Spark plug 120 produces ignition spark and so lights said fuel-air mixture.Igniting is carried out in compression stroke is calmed the anger stroke in other words usually, compresses through moving upward of piston 30 at the said compression stroke fuel-air mixture described in the stroke of calming the anger in other words.If just before upper dead center, light a fire soon, the emphasis that burns so just is in and is right after in the beginning of compression stroke expansion stroke at the back.The angular orientation of crank is called angle of attack in the time of in being ejected into cylinder, and the angular orientation of crank is called firing angle when igniting.

The suction valve 160 that leads on the delivery line of firing chamber 20 that is arranged on suction tude 80 drives through the cam on the camshaft 190 180.Equally, the outlet valve 170 that leads on the delivery line of firing chamber 20 that is arranged on outlet pipe 90 can drive through the cam on the camshaft 190 182.Said camshaft 190 is coupled with crank 50.Usually crank 50 whenever revolves the said camshaft 190 that takes two turns and revolves and turn around.So the said camshaft 190 of design makes outlet valve 170 in exhaust stroke, open, and near upper dead center, closes.Said suction valve 160 is opening near the said upper dead center and in aspirating stroke, is cutting out.

Cylinder thereby pass through these four working strokes of suction stroke, compression stroke, expansion stroke and exhaust stroke in order.For the internal-combustion engine of multi-cylinder, so arrange said cylinder usually, make said expansion stroke periodically be assigned on the said cylinder.

For internal-combustion engine with four cylinders; Said expansion stroke has moved 720o/4=180 ° of degree in crank angle; For internal-combustion engine with six cylinders; Said expansion stroke has moved 720 ° of degree in crank angle/6=120 °, and for the internal-combustion engine with eight cylinders, said expansion stroke has moved 720 ° of degree in crank angle/8=90 °.Can not implement under the situation of equidistance said in the spacing between the working stroke of cylinder about degree in crank angle by method of the present invention yet.

Fig. 2 a shows the traditional injection and the igniting situation of fuel for four-cylinder internal combustion engine.Fig. 2 a shows the first angle of attack KWe1 and the first firing angle KWz1.The said first angle of attack KWe1 and the first firing angle KWz1 are in before the said upper dead center OT.The said first angle of attack KWe1 is in before the first firing angle KWz1.Fig. 2 a also shows being in of said four-cylinder internal combustion engine the calm the anger degree in crank angle of the first cylinder Z1_4 in the stroke and the degree in crank angle that is in the four-cylinder Z4_4 in the expansion stroke of said four-cylinder internal combustion engine.In the inswept said angular orientation of the degree in crank angle of cylinder described in the rotary movement of internal-combustion engine.

If the degree in crank angle of the first cylinder Z1_4 of said four-cylinder internal combustion engine the is inswept said first angle of attack KWe1; So said straight spray valve 110 just injects fuel in the firing chamber 20 of the said first cylinder Z1_4; If the degree in crank angle of the first cylinder Z1_4 of said four-cylinder internal combustion engine the is inswept said first firing angle KWz1; Spark plug 120 just produces ignition spark so, that is to say that it lights fuel in the firing chamber 20 of the first cylinder Z1_4 of said four-cylinder internal combustion engine.Make the acceleration that rotatablely moves of crank through the burning among the first cylinder Z1_4 of said four-cylinder internal combustion engine, the emphasis of said burning is in the zone of upper dead center OT.

Fig. 2 b show for four-cylinder internal combustion engine fuel by injection of the present invention and igniting situation.Show the first angle of attack KWe1 and the first firing angle KWz1 and the second angle of attack KWe2 and the second firing angle KWz2 at this.Fig. 2 b also shows 0. the calm the anger degree in crank angle of the first cylinder Z1_4 in the stroke and the degree in crank angle that is in the four-cylinder Z4_4 in the expansion stroke of said four-cylinder internal combustion engine that be in of said four-cylinder internal combustion engine.The said first angle of attack KWe1 and the first firing angle KWz1 are in before the upper dead center OT.The said first angle of attack KWe1 just is in before the first firing angle KWz1.The said second angle of attack KWe2 and the second firing angle KWz2 are in after the degree in crank angle of four-cylinder Z4_4 of said four-cylinder internal combustion engine.The said second angle of attack KWe2 is in before the second firing angle KWz2.

If the degree in crank angle of the first cylinder Z1_4 of said four-cylinder internal combustion engine the is inswept said first angle of attack KWe1; So said straight spray valve 110 just injects fuel in the firing chamber 20 of the first cylinder Z1_4 of said four-cylinder internal combustion engine; If the degree in crank angle of the first cylinder Z1_4 of said four-cylinder internal combustion engine the is inswept said first firing angle KWz1, spark plug 120 is just lighted fuel in the firing chamber 20 of first cylinder of said four-cylinder internal combustion engine so.If the degree in crank angle of the four-cylinder Z4_4 of said four-cylinder internal combustion engine the is inswept said second angle of attack KWe2; So said straight spray valve 110 just injects fuel in the firing chamber 20 of four-cylinder Z4_4 of said four-cylinder internal combustion engine; If the degree in crank angle of the four-cylinder Z4_4 of said four-cylinder internal combustion engine the is inswept said second firing angle KWz2, spark plug 120 is just lighted fuel in the firing chamber 20 of the four-cylinder Z4_4 of said four-cylinder internal combustion engine so.Not only the burning among the four-cylinder Z4_4 of burning among the first cylinder Z1_4 of said four-cylinder internal combustion engine but also said four-cylinder internal combustion engine all makes now changes apart from being delivered on the crank 50.Be delivered on the crank 50 torque greater than only in the first cylinder Z1_4 of said four-cylinder internal combustion engine the igniting time institute's torque transmitted.Therefore burning among the four-cylinder Z4_4 of said four-cylinder internal combustion engine has improved the torque that is delivered on the crank 50 with respect to illustrated traditional injection and ignition method in Fig. 2 a.Depend on rotating speed, can so select the first angle of attack KWe1, the first firing angle KWz1, the second angle of attack KWe2 and the second firing angle KWz2, make the reliability of resetting of internal-combustion engine maximize such as internal-combustion engine.Especially can so select these parameters, make to be delivered to the torque maximization on the crank 50 through burning.

Fig. 2 c and Fig. 2 b show similarly for six-cylinder engine fuel by injection of the present invention and igniting situation.Show the said first angle of attack KWe1 and the first firing angle KWz1, the 3rd angle of attack KWe3 and thirdly fiery angle KWz3, the 4th angle of attack KWe4 and the 4th firing angle KWz4 at this.Fig. 2 c also shows being in of said six-cylinder engine calm the anger degree in crank angle, the degree in crank angle that is in the 5th cylinder Z5_6 in the expansion stroke of said six-cylinder engine and the degree in crank angle that is in the 6th cylinder Z6_6 in the expansion stroke of said six-cylinder engine of the first cylinder Z1_6 in the stroke.The said first angle of attack KWe1 and the first firing angle KWz1 are just before upper dead center OT.The said first angle of attack KWe1 is in before the first firing angle KWz1.Said the 3rd angle of attack KWe3 and thirdly fiery angle KWz3 are in after the degree in crank angle of the 6th cylinder Z6_6 of said six-cylinder engine.Said the 3rd angle of attack KWe3 is in before the thirdly fiery angle KWz3.Said the 4th angle of attack KWe4 and the 4th firing angle KWz4 are in after the degree in crank angle of the 5th cylinder Z5_6 of said six-cylinder engine.Said the 4th angle of attack KWe4 is in before the 4th firing angle KWz4.

If the degree in crank angle of the first cylinder Z1_6 of said six-cylinder engine the is inswept said first angle of attack KWe1; So said straight spray valve 110 just injects fuel in the firing chamber 20 of the first cylinder Z1_6 of said six-cylinder engine; If the degree in crank angle of the first cylinder Z1_6 of said six-cylinder engine the is inswept said first firing angle KWz1, spark plug 120 is just lighted fuel in the firing chamber 20 of the first cylinder Z1_6 of said six-cylinder engine so.If the degree in crank angle of the 6th cylinder Z6_6 of said six-cylinder engine is inswept said the 3rd angle of attack KWe3; So said straight spray valve 110 just injects fuel in the firing chamber 20 of the 6th cylinder Z6_6 of said six-cylinder engine; If the degree in crank angle of the 5th cylinder Z5_6 of said six-cylinder engine is inswept said the 4th firing angle KWz4, spark plug 120 is just lighted fuel in the firing chamber 20 of the 5th cylinder Z5_6 of said six-cylinder engine so.Burning among burning among the 5th cylinder Z5_6 of said six-cylinder engine and the 6th cylinder Z6_6 of said six-cylinder engine has all improved the torque that is delivered on the crank 50.Can only in the first cylinder Z1_6 of said six-cylinder engine and in the 6th cylinder Z6_6 of said six-cylinder engine, burn now.Equally also possible is only in the first cylinder Z1_6 of said six-cylinder engine and in the 5th cylinder Z5_6 of said six-cylinder engine, to burn.Depend on rotating speed such as internal-combustion engine; Can so select the first angle of attack KWe1, the first firing angle KWz1, the 3rd angle of attack KWe3 and thirdly fiery angle KWz3; The 4th angle of attack KWe4 and the 4th firing angle KWz4 make the reliability of resetting of internal-combustion engine maximize.Especially can so select these parameters, make to be delivered to the torque maximization on the crank 50 through burning.

Fig. 2 d and Fig. 2 c and Fig. 2 b show similarly for eight cylinder IC engines fuel by injection of the present invention and igniting situation.Show the said first angle of attack KWe1 and the first firing angle KWz1, the 5th angle of attack KWe5 and the 5th firing angle KWz5, the 6th angle of attack KWe6 and the 6th firing angle KWz6 at this.Fig. 2 d also shows being in of said eight cylinder IC engines calm the anger degree in crank angle, the degree in crank angle that is in the 8th cylinder Z8_8 in the expansion stroke of said eight cylinder IC engines, the degree in crank angle that is in the 7th cylinder Z7_8 in the expansion stroke of said eight cylinder IC engines and the degree in crank angle that is in the 6th cylinder Z6_8 in the stroke of calming the anger of said eight cylinder IC engines of the first cylinder Z1_8 in the stroke.The said first angle of attack KWe1 and the first firing angle KWz1 are in before the upper dead center OT.The said first angle of attack KWe1 is in before the first firing angle KWz1.Said the 5th angle of attack KWe5 and the 5th firing angle KWz5 are in after the degree in crank angle of the 8th cylinder Z8_8 of said eight cylinder IC engines.Said the 5th angle of attack KWe5 is in before the 5th firing angle KWz5.Said the 6th angle of attack KWe6 and the 6th firing angle KWz6 are in after the degree in crank angle of the 7th cylinder Z7_8 of said eight cylinder IC engines.Said the 6th angle of attack KWe6 is in before the 6th firing angle KWz6.

If the degree in crank angle of the first cylinder Z1_8 of said eight cylinder IC engines the is inswept said first angle of attack KWe1; So said straight spray valve 110 just injects fuel in the firing chamber 20 of the first cylinder Z1_8 of said eight cylinder IC engines; If the degree in crank angle of the first cylinder Z1_8 of said eight cylinder IC engines the is inswept said first firing angle KWz1, spark plug 120 is just lighted fuel in the firing chamber 20 of the first cylinder Z1_8 of said eight cylinder IC engines so.If the degree in crank angle of the 8th cylinder Z8_8 of said eight cylinder IC engines is inswept said the 5th angle of attack KWe5; So said straight spray valve 110 just injects fuel in the firing chamber 20 of the 8th cylinder Z8_8 of said eight cylinder IC engines; If the degree in crank angle of the 7th cylinder Z7_8 of said eight cylinder IC engines is inswept said the 6th firing angle KWz6, spark plug 120 is just lighted fuel in the firing chamber 20 of the 7th cylinder Z7_8 of said eight cylinder IC engines so.Burning among burning among the 8th cylinder Z8_8 of said eight cylinder IC engines and the 7th cylinder Z7_8 of said eight cylinder IC engines has all improved the torque that is delivered on the crank 50.Can only in the first cylinder Z1_8 of said eight cylinder IC engines and in the 8th cylinder Z8_8 of said eight cylinder IC engines, burn now.Equally also possible is only in the first cylinder Z1_8 of said eight cylinder IC engines and in the 7th cylinder Z7_8 of said eight cylinder IC engines, to burn.Depend on rotating speed such as internal-combustion engine; Can so select the first angle of attack KWe1, the first firing angle KWz1, the 6th angle of attack KWe6 and the second firing angle KWz6; The 7th angle of attack KWe7 and the 7th firing angle KWz7 make the reliability of resetting of internal-combustion engine maximize.Especially can so select these parameters, make to be delivered to the torque maximization on the crank 50 through burning.

Fig. 3 shows the ignition order when resetting four-cylinder internal combustion engine.Fig. 3 a shows the ignition order under the situation that equally only defines the said first angle of attack KWe1 and the first firing angle KWz1 shown in Fig. 2 a.Fig. 3 a shows being in of said four-cylinder internal combustion engine calm the anger degree in crank angle, the degree in crank angle that is in the second cylinder Z2_4 in the suction stroke of said four-cylinder internal combustion engine, the degree in crank angle that is in the 3rd cylinder Z3_4 in the stroke of calming the anger of said four-cylinder internal combustion engine and the degree in crank angle that is in the four-cylinder Z4_4 in the expansion stroke of said four-cylinder internal combustion engine of the first cylinder Z1_4 in the stroke.In corresponding degree in crank angle is being calmed the anger stroke, correspondingly inject fuel in the corresponding cylinder during the inswept first angle of attack KWe1, in the stroke of calming the anger, when the inswept first firing angle KWz1, correspondingly light a fire.Sense of rotation according to internal-combustion engine; At first in the first cylinder Z1_4 of said four-cylinder internal combustion engine, light a fire thus; Then in the second cylinder Z2_4 of said four-cylinder internal combustion engine, light a fire; Then in the 3rd cylinder Z3_4 of said four-cylinder internal combustion engine, light a fire again, then in the four-cylinder Z4_4 of said four-cylinder internal combustion engine, light a fire, in the said first cylinder Z1_4, light a fire or the like again then.

Fig. 3 b and Fig. 3 a show similarly as among Fig. 2 b as the complementary definition of the first angle of attack KWe1 and the first firing angle KWz1 ignition order under the situation of the said second angle of attack KWe2 and the second firing angle KWz2.Then at first in the first cylinder Z1_4 of said four-cylinder internal combustion engine, light a fire, and in the four-cylinder Z4_4 of said four-cylinder internal combustion engine, light a fire subsequently.Depend on the relative angular orientation of said angle of attack and firing angle, also can arrange like this, promptly at first fight and light a fire among the first cylinder Z1_4 at said four-cylinder internal combustion engine subsequently at the four-cylinder Z4_4 of said four-cylinder internal combustion engine mid point.Also can igniting simultaneously in these two cylinders.After in the four-cylinder Z4_4 of said four-cylinder internal combustion engine, lighting a fire; The said second angle of attack KWe2 and the first firing angle KWz2 suspend need not (inaktiv); That is to say if other cylinder surpasses these angular orientations in expansion stroke, then do not spray or light a fire.Ignition order thereby continue with common order.First and four-cylinder in after the igniting, as the second cylinder Z2_4 igniting that next cylinder is given said four-cylinder internal combustion engine, then in the 3rd cylinder Z3_4 of said four-cylinder internal combustion engine, light a fire, then in said four-cylinder Z4_4, light a fire or the like.

Fig. 4 and Fig. 3 show the ignition order when resetting six-cylinder engine similarly.Fig. 4 a shows the ignition order under the situation that only defines the said first angle of attack KWe1 and the first firing angle KWz1.With a kind of ignition order of the similar generation of Fig. 3 a, in this ignition order, at first in the first cylinder Z1_6, light a fire, then in the second cylinder Z2_6, light a fire, then in the 3rd cylinder Z3_6, light a fire or the like.If additionally defined said the 3rd angle of attack KWe3 and thirdly fiery angle KWz3 and said the 4th angle of attack KWe4 and the 4th firing angle KWz4, that just is created in defined ignition order among Fig. 4 b.Similar with the embodiment of said six-cylinder engine; To explain at this; If carried out spraying igniting in other words during firing angle in other words at a cylinder at inswept said third and fourth angle of attack, so said third and fourth angle of attack in other words firing angle just suspend need not.As ignition order the first cylinder Z1_6, the 5th cylinder Z5_6, the 6th cylinder Z6_6, the second cylinder Z2_6, the 3rd cylinder Z3_6 or the like appear then.As the ignition order of the first cylinder Z1_6, the 5th cylinder Z5_6 and the 6th cylinder Z6_6, can depend on that this three cylinders are exchanged arbitrarily in the angular orientation of angle of attack and firing angle.

Fig. 4 c shows the ignition order that is used for except the said first angle of attack KWe1 and the first firing angle KWz1, also only having defined said the 3rd angle of attack KWe3 and this situation of thirdly fiery angle KWz3.As ignition order the first cylinder Z1_6, the 6th cylinder Z6_6, the second cylinder Z2_6, the 3rd cylinder Z3_6 or the like appear then.The ignition order of said first cylinder Z1_6 and the 6th cylinder Z5_6 can depend on that the angular orientation of said angle of attack and firing angle exchanges.

Fig. 4 d shows the ignition order that is used for except the said first angle of attack KWe1 and the first firing angle KWz1, also only having defined said the 4th angle of attack KWe4 and this situation of the 4th firing angle KWz4.As ignition order the first cylinder Z1_6, the 5th cylinder Z5_6, the second cylinder Z2_6, the 3rd cylinder Z3_6 or the like appear then.The ignition order of said first cylinder Z1_6 and the 5th cylinder Z5_6 can depend on that the angular orientation of said angle of attack and firing angle exchanges.

Fig. 5 and Fig. 3 and Fig. 4 show the ignition order when resetting eight cylinder IC engines similarly.Fig. 5 a shows the ignition order under the situation that has only defined the said first angle of attack KWe1 and the first firing angle KWz1.Produce a kind of ignition order with Fig. 3 a and Fig. 4 a similarly, in this ignition order, at first in the first cylinder Z1_8, light a fire, then in the second cylinder Z2_8, light a fire, then in the 3rd cylinder Z3_8, light a fire or the like.If additionally defined said the 5th angle of attack KWe5 and the 5th firing angle KWz5 and said the 6th angle of attack KWe6 and the 6th firing angle KWz6, that just is created in defined ignition order among Fig. 5 b.The embodiment of eight cylinder IC engines is similar in other words with said six cylinders; To explain at this; If in a cylinder, carried out spraying igniting in other words in other words during firing angle at the inswept the said the 5th and the 6th angle of attack, the so said the 5th and the 6th angle of attack in other words firing angle just time-out need not.As ignition order the first cylinder Z1_8, the 7th cylinder Z7_8, the 8th cylinder Z8_8, the second cylinder Z2_8, the 3rd cylinder Z3_8 or the like appear then.As the ignition order of the first cylinder Z1_8, the 7th cylinder Z7_8 and the 8th cylinder Z8_8, can depend on that this three cylinders are exchanged arbitrarily in the angular orientation of angle of attack and firing angle.

Fig. 5 c shows the ignition order that is used for except the said first angle of attack KWe1 and the first firing angle KWz1, only having defined said the 5th angle of attack KWe5 and this situation of the 5th firing angle KWz5.As ignition order the first cylinder Z1_8, the 8th cylinder Z8_8, the second cylinder Z2_8, the 3rd cylinder Z3_8 or the like appear then.The ignition order of said first cylinder Z1_8 and the 6th cylinder Z6_8 can depend on that the angular orientation of said angle of attack and firing angle exchanges.

Fig. 5 d shows the ignition order that is used for except the said first angle of attack KWe1 and the first firing angle KWz1, only having defined said the 6th angle of attack KWe6 and this situation of the 6th firing angle KWz6.As ignition order the first cylinder Z1_8, the 7th cylinder Z7_8, the second cylinder Z2_8, the 3rd cylinder Z3_8 or the like appear then.The ignition order of said first cylinder Z1_8 and the 7th cylinder Z7_8 can depend on that the angular orientation of said angle of attack and firing angle exchanges.

Fig. 6 shows the flow chart that is used to reset the method for internal-combustion engine by of the present invention.In step 1000, detect and stop requirement, such as because time ratio predefined longer duration for racing speed that Motor Vehicle stops.In following step 1010, take to be used to turn off the measure of internal-combustion engine.Especially break off injection and igniting in the cylinder.The rotating speed of internal-combustion engine begins to descend now.Next be step 1020.In step 1020, also before internal-combustion engine stops, just, internal-combustion engine detecting start request when rotating, such as having handled accelerator pedal because detect the driver.

Next be step 1030, in this step, detect the angular orientation of each cylinder.Especially detect, which cylinder ZK is in the stroke of calming the anger and which cylinder ZA is in the expansion stroke.For the embodiment of four-cylinder internal combustion engine, the first cylinder Z1_4 is in the stroke of calming the anger and four-cylinder Z4_4 is in the expansion stroke.For the embodiment of six-cylinder engine, the first cylinder Z1_6 is in the stroke of calming the anger and the 5th cylinder Z5_6 and the 6th cylinder Z6_6 are in the expansion stroke.For the embodiment of eight cylinder IC engines, the first cylinder Z1_8 is in the stroke of calming the anger and the 7th cylinder Z7_8 and the 8th cylinder Z8_8 are in the expansion stroke.Also can detect cylinder ZK, ZA, these cylinders ZK, ZA said crank 50 can predetermined angle of rotation after can the predetermined very first time be in after at interval in other words and calming the anger stroke in other words in the expansion stroke.Next be step 1040.

In step 1040, detect and definite in advance angle of attack KWe and firing angle KWz.Be in the first angle of attack KWe1 and the first firing angle KWz1 of the cylinder in the stroke of calming the anger in this definition.Same definition angle of attack KWe and firing angle KWz should be at those for said angle of attack KWe and firing angle KWz and spray igniting in other words in the cylinder in the expansion stroke.Can confirm said angle of attack these angular orientations of firing angle in other words regularly in advance.Such as can so selecting the first angle of attack KWe1 and the first firing angle KWz1, make the igniting among the cylinder Z1 that wins produce maximum torque or maximum power.Then can so select injection and the angular orientation of igniting in the expansion stroke, make simultaneously and to light a fire in the cylinder in being in expansion stroke and the stroke of calming the anger.But also can so select said angular orientation, thereby reach the burning emphasis of the cylinder of lighting a fire simultaneously.But also can select said angular orientation in the detected angular orientation of the cylinder in the expansion stroke in other words with respect to being in the stroke of calming the anger.Also can play the angular orientation that KWe and igniting KWz are sprayed in definition in the interval of the end of the residing stroke of this cylinder in the detected angular orientation in step 1030 of corresponding cylinder.Can so select firing angle KWz equally, make to have only when the suction valve 160 of cylinder cuts out with outlet valve 170, just be in the cylinder in the expansion stroke and light a fire.Next be step 1050.

In step 1050, spray igniting in other words with predetermined angular orientation in step 1040.Next be step 1090, in this step, implement other the measure that is used for cranking internal combustion engine, especially the normal ignition order of basis further sprays and lights a fire, then method ends.

Claims

1. be used to start the method that is in the multi-cylinder engine among the coasting, wherein light fuel in the compression cylinder in being in compression stroke, it is characterized in that, light fuel in the acting cylinder in being in expansion stroke.

2. by the described method of claim 1, it is characterized in that can light a fire by predetermined firing angle (KWz) in compression cylinder with said compression cylinder.

3. by each described method in the aforementioned claim, it is characterized in that can light a fire by predetermined firing angle (KWz) in the acting cylinder with said acting cylinder.

4. by each described method in the aforementioned claim, it is characterized in that that so selects said acting cylinder can predetermined firing angle (KWz), make the torque maximization that acts on crank (50) that produces through said acting cylinder.

5. by each described method in the aforementioned claim, it is characterized in that that so selects said compression cylinder can predetermined firing angle (KWz), make the torque maximization that acts on crank (50) that produces through said compression cylinder.

6. by each described method in the aforementioned claim, it is characterized in that, said acting cylinder can predetermined firing angle (KWz) greater than the detected crankangle of said acting cylinder.

7. by each described method in the aforementioned claim, it is characterized in that, said compression cylinder can predetermined firing angle (KWz) greater than the detected crankangle of said compression cylinder.

8. by each described method in the aforementioned claim, it is characterized in that, with said acting cylinder can predetermined angle of attack (KWe) burner oil in this acting cylinder.

9. by each described method in the aforementioned claim, it is characterized in that, with said compression cylinder can predetermined angle of attack (KWe) burner oil in this compression cylinder.

10. computer program is characterized in that, in order to be used in by in each described method in the claim 1 to 9 it being programmed.

11. electric storage medium is used for the control and/or the controlling device (70) of internal-combustion engine, it is characterized in that, has preserved in the above to be used for being used in the computer program by the described method of claim 1 to 9.

12. the control of internal-combustion engine and/or controlling device (70) is characterized in that, in order to be used in by in each described method in the claim 1 to 9 it being programmed.