METHOD FOR CONTROLLING AN EGR CIRCUIT IN A MOTOR VEHICLE ENGINE
The present invention refers to in automobile exhaust gas recirculation circuit for controlling relates to method. The automotive internal combustion engine, generally, plurality is defined by the cylinder of a, combustion of a mixture of oxidizer and fuel work for an internal combustion engine, includes a combustion chamber. Said oxidant air which is, the air an internal combustion engine includes the compressor depending on whether the compressed air may be may be air or uncompressed. When of the compressed air also described as a turbocharging the air (supercharging). Furthermore, air (of transceivers when "clean air (fresh air)" denoted) the exhaust gases and powder is manufactured by mixing, which may be, thus is obtained by adding this mixture also described as a recirculated exhaust gas. Usually in operating modes Haven skilled worker homogeneously distributed, "exhaust gas recirculation (Exhaust Gas Recirculation)" which means that constitution: known as EGR soft-English. Air that is incorporated into a combustion chamber is known to inert gas, thus, non active gas composed only of clean air or may be, or clean air is made of a mixture of an the exhaust gas and a may. The flow rate of inert gas, of vehicle throttle pedal (throttle pedal) an internal combustion engine for adjusting the speed of a motor the pressed indicates the ranges of the function, and to be controlled as such, butterfly valve (butterfly valve) type controlled by a single valve can be. Compressor or turbo compressor such as when of internal combustion engines equipped with compression means, air internal combustion engine intake circuit after being introduced, compressor cooling is held under compression by an by is introduced into cylinder if there is the specific, fuel and combustion in cylinders and then. is removed through exhaust line. Thus by to exhaust gas that is generated by, compressor and is attached to compressor form turbo compressor together are composed are not driven a turbine. Exhaust gas cycling through, turbine rear is released the exhaust gas for re-instillating in front compressor applied to when "low pressure" is publicly known by circulation material, front or turbine compressor is released at a rear of the exhaust gas for re-instillating "high pressure" material when applied to a publicly known by circulation means exhaust gas recycling may be loaded with. The aforementioned two types of recycling may be this combination. In one example, cycling through low pressure material, in the case of gasoline engine, exhaust-gas temperature may be lower (in addition the of recently-burned combustion mixture significantly high levels concentrating avoids the need combustion of a fuel to reduce an amount by which the can be), in case of a high compression ratio of internal combustion engine a "ping (ping)" possible to prevent that a with a power unit, in the case of a diesel internal combustion engine, a contamination level on the basis of to conform to reference environment can be lower. The low pressure gas exhaust recirculation loop in the case of, for example, total inert gas entering the internal combustion engine during flow for the recirculated exhaust gas ratio which means that for controlling the level EGR "(three-way valve) 3-way valve" to publicly known a valve is generally provided.. Such 3-two way valve the duct with an inlet, a clean air for the other one of said to employ one having an for recirculated exhaust gas (below the element as, recirculated exhaust gas optionally bonded "EGR gas"). Generally gas EGR, clean air is cooled before it is mixed with the. 3-way valve in addition, of clean air and/or EGR for holding a gas an inlet for communicating with a duct includes outflow ducts. Said outflow ducts, for example, is open compressor, compressor, and the gases from the cooler to before they enter the internal combustion engine (or said cooler bypass flow path along the) is guided. Well as, a simple two way valve 3-valve it possible to replace which may be, one such a valve clean air inlet duct and another one located exhaust gas circulation duct positioned with the.. The flow rate of a gas passing thorough the valve shutter or butterfly valve such as is regulated to by a decoupling means. As known, operating mode and of various 3-way valve according to the operation of an internal combustion engine and may take into account mode. In the case of internal combustion engine clean except for gas EGR achieved and the catalyst may be receiving-exchanged by outdoor, or mixtures of gases and EGR, which may be to accommodate, to the suction side allows the exhaust side of the internal combustion engine exhaust gas recirculation between the sufficient to cause present. Exhaust gas recirculation pressure difference sufficient to cause the, at the same time, when high, accurate in addition in order to ensure the EGR level, the exhaust flow passages downstream of loop EGR can produce an encoded counterpressure , the, some of exhaust gas is adapted to be propelled path engine of combustion chamber can be. However, aforementioned solution of the prior art, due to complexity configuration, it is and it boils not significantly satisfied, the present invention refers to accurate EGR flow in order to ensure the counterpressure contains specific information including a sender address in generating further, the present invention provides solution. The, the present invention refers to automotive internal combustion engine for recirculating exhaust gas of as method for controlling circuit, said internal combustion engine in addition the intake circuit is connected with the, said recirculation circuit said intake circuit is connected to circuit exhaust gas, said recirculation circuit upstream of the air flow rate for regulating number 1 valve is provided, said recirculation circuit exhaust gas recirculated in for regulating the flow rate of a valve number 2, in automobile exhaust gas recirculation circuit for controlling in method, In a state to open the valve for a selected a) said number 1, said number 2 and to incrementally and opening the valve; and B) said number 2 valve is 25° to 35° be at angles greater than value of, such lowered according to the lifting and lowering said number 1 number 2 valve is open, a valve that closes and to incrementally to including step relates to characterized by method. According to the present invention, EGR gas suction air not reverse through closing of the valve to provide a two-dimensional level EGR can be increased. Furthermore, such EGR is carried out, the amount of the lower levels of control. More particularly, air shutter closed is made to be angle by buried into range of 25° to 35 °, the opening angle of valve EGR EGR contrast without decrease any observable curve level layer, an upper support layer, food composition has effects constant, this EGR level, as opposed to a curved base secondary derivative is actually always a positive value. to determining presence. Therefore, through EGR valve is open, a directly effective manner in control of the level EGR. The present invention refers to in particular, a diesel internal combustion engine of the low-glass control of exhaust gas recirculation, is.. Valve opening angle as a function EGR level more linearly and gradual and 1 each represent a number of, valve and according to EGR levels of control accuracy can be improved. According to one embodiment, said number 2 the opening angle of the opening of valve in stopped and the 65° to 85 °, after said number 1 valve is fully closed. Therefore, said number 1 is made to rapidly closing of the valve. According to one embodiment, said number 1 leaked at a closed valve that allows passage of air flow consists of to. The for operating an internal combustion engine a minimal level of air [...] insure. According to one embodiment, said number 1 and number 2 valve, and an inlet port valve is said number 1, said number 2 valve is an inlet port, said internal combustion engine the gas is to be introduced a intake manifold and directly or indirectly in communication with the out-flow port including 3-way valve is arranged. Such embodiment has compact structure relate. which can be easily operated. In this case, according to one embodiment, said number 2 valve driving the one or more display elements said number 1 valve and a single driver said 3-way valve having the motor, -Said motor by the rotation of said number 2 and is opening or closing valve, that are open said number 1 the valve number 1 mode, and -Said motor by the rotation of which valve is opened said number 2 additionally, valve is opened and closed with said number 1, said number 2 valve is open, a angle of 35° to 25° angle flow filters have the start of closing of the valve said number 1 number 2 mode of operation has modes of operation of at least two. According to the present invention, in automobile by controlling the exhaust gas recirculation circuit, total inert gas entering the internal combustion engine during flow which means that ratio for the recirculated exhaust gas EGR and offers high accuracy of level can easily be controlled by. Reference to accompanying drawing the present invention is control method of the present invention description of a preferred embodiment below the first deoxygenator better't is it will be appreciated: Also a preferred embodiment Figure 1 shows a method embodiment of the present invention control the first deoxygenator allowing internal combustion engine and intake circuit, exhaust circuit and recirculation circuit is roughly shown one side; Also 2a, 2b also, the 2d and 2c also a preferred embodiment of the present invention control method for the first deoxygenator embodiment you the usage mode of Figure 1 EGR valve shown in the drawing; Figure 3 shows a EGR active on the gas pressure in the shutter valve bore cross-sectional embodiment a preferred embodiment of the present invention control method thereby, the cold air flows for EGR gas flow regulation shutter also as a function of position each direction of Figure 1 timing graph; EGR level also Figure 4 shows a control method of the present invention a preferred embodiment embodiment thereby, the cold air flows in contextual for EGR gas flow regulation shutter graph timing as a function of position each direction; The 5b and 5a also shown in the perspective view of Figure 1 EGR valve; and Also 6a and 6b the two different use mode drawing of Figure 1 EGR valve a from a top. Also 1 with a, a plurality of cylinder (M) automotive internal combustion engine, the present embodiment in four cylinders with a number, oxidizer and fuel (diesel in the present in the embodiment) is configured to receive a mixture of an internal combustion engine combustion in the cylinder of combustion chamber operation (M) (1) includes. Typically, during operation of the tool (M) internal combustion engine, the combustion chamber gas (1) is introduced into, combustion chamber of the gas in a compression and combustion is then, surface 16a and exits that is remote from the combustion chamber in the form of exhaust gas. As such, conventional automotive internal combustion engine, 4 stroke (intake, compression, explosion and exhaust) is internal combustion engine. Gas internal combustion engine introduced (M) a intake circuit (2a) the charge air/or freshening introduction of air for the intake pipe (3) (direction of flow arrow (F1) is as illustrated at) and, compressor for the fill gas (4) (in the present embodiment, turbo compressor), , and compressor (4) capable of establishing multi-level information gas from the heat exchanger (5) includes. Heat exchanger (5) has sugar where a new file does not exist "charge air cooler (charge air cooler)" her skilled worker often a English soft constitution: known as "CAC". Such a heat exchanger due to compression by establishing an optical fiber at a turbocharging deactivating gas, in particular, air cooling to efficient to. CAC (5) (M) gas from the combustion chamber of an internal combustion engine (1) as an intake manifold for introduction of air into (6) it goes to, the combustion chamber said in addition, the gas in cylinder head of internal combustion engine (M) to form a header for box (header box). In the present embodiment in particular, intake circuit (2a) the CAC (5) which circumvent flow path including a bypass (14) includes, cooling passage non introduced and gas into a cooling passage (14) both introduction gas into as publicly known valve in such a way that the (13) is regulated to by. (M) internal combustion engine the pressure at the intake is to be introduced is gas (6) including type shutter butterfly circuit intake upstream of valve (17) includes, in the case of gasoline engine a such a valve an internal combustion engine's combustion majority voting circuit using gas a with function of of wet liquid to flow down. In the case of a diesel internal combustion engine, butterfly valve (17) are generally, referred the "choke (choke)", such butterfly valve (17) where a new file does not exist sugar has her skilled worker well known of controlling an internal combustion engine unit (conventional English soft- "ECU (engine control unit)" denoted) is controlled by. Gas exhaust circuit (2b) the, combustion chamber of (M) internal combustion engine (1) provided in the outlet of, and the gas flow path or tube (8) which is connected to exhaust manifold (7) includes. Exhaust circuit (2b) the in addition, the intake gas of the fuel cell compressor (4) and rotates together with the polishing head which form a turbine compressor and together turbo compressor (10) includes. Turbine (10) the exhaust flow passages (8) is driven by waste gas of a, such arrow direction of flow of the exhaust gas (F2) to constitution: shown coarse. Finally, exhaust circuit (2b) extending from the vicinity of the outlet of exhaust gas to flow out intake circuit (2a) into, the present embodiment in compressor (4) upstream of, to for re-instillating, exhaust circuit (2b) the valve (9) in recirculated exhaust gas ("EGR gas") for guiding the line (11) for including exhaust gas recirculation circuit (2c) is connected with the, in the present embodiment said valve hereinafter EGR valve (9) also referred to as a 3-way valve (9) is, recirculation circuit (2c) of intake circuit (2a) [...] connection to point or region is formed. Such exhaust gas cycling through relatively low pressure exhaust circuit (2b) (downstream of turbine (10)) to the exhaust gas of an internal in are fixed, establishing an optical fiber at a side of a reflector according to each step can be low pressure recycling. Recirculation circuit (2c) for these recirculated exhaust gas cooler (12) is constitution: in addition. Is recycled not other so as to form an exhaust gas gas, arrow direction of flow of the exhaust gas, represented by the chemical (F3). EGR valve (9) other so as to form an an inlet gas (composition thereof the air and EGR gas inlet port (9a, 9b) that vary according to gas flow from) for gas charge air inlet port (9a) (or a duct (9a)) and a, EGR gas inlet port (9b) (or a duct (9b)), the gas outlet port (9c) has a (or a duct (9c)). EGR valve (9) the air inlet port (9a) shutter (15) (hereinafter, "air shutter (15)" also referred to as) and a, EGR gas inlet port (9b) shutter (16) (hereinafter, "EGR gas shutter (16)" also referred to as) includes. Functionally in terms and in particular also to 2a to 2c also as illustrated clear, thus, EGR valve (9) the two valve function, i.e., clean air flow controlling function and EGR gas flow regulation function performs. EGR valve (9) of operating mode is hereinafter in one aspect an of the is also disclosed, this operation is for embodiment mode, in particular, shutter (15, 16) ratio of between opening degree of EGR valve (9) according to embodiment of may be varied. Operates without exhaust gas recirculation corresponding to (M) an internal combustion engine, also shown in 2a EGR valve (9) of number 1 in mode of operation (for example, the internal combustion engine is in particular cooling in ubiquitous computing environment when activated), air shutter (15) is opened in the (that can be or partially is configured open) EGR gas shutter (16) is closed and the, recirculation line (11) .the second intermediate matching. Exhaust gas recirculation operation of an internal combustion engine is made (M) 2b disclosure shown in Figure corresponding to EGR valve (9) of number 2 in the same operating mode, EGR gas shutter (16) has graded that is open while air shutter (15) that can be the, remain. Therefore, some of exhaust gas are blended and in the intake gas of the fuel cell. Also shown in 2c EGR valve (9) of number 3 in the same operating mode, EGR gas shutter (16) is configured open graded has, such in opening, the additionally air shutter (15) to be gradually 2000. Air shutter (15) portion of shutter EGR freezer device and the like (16) by combination with open, clean air flow reducing due to the developing sleeve a magnet roller is thereby sucked out gas through EGR EGR for the color temperature. the flow rate of gas. According to the present invention, refers to as, EGR shutter (16) is at an angle of 25° to 35 °, the present embodiment in 28° at an angle of these opened, the disclosure is a degraded operating mode is number 3. Also shown in 2d EGR valve (9) of number 4 in the same operating mode, EGR gas shutter (16) partially is open and wherein a (in addition, EGR gas shutter assigned to is in dynamic opening maximum), air shutter (15) is closed. Therefore, EGR is maximum level. According to in an illustrated embodiment, air shutter (15) the, air shutter between the line an interior surface of the wall of the edge of its "J" to is etched to a gap-shaped, air shutter the diameter of the line air across an line of being shutter consists of fastening force is decreased in the extending manner. Such "J" -shaped gap by but allows passage of leak flow clean air according to to, the internal combustion engine is EGR valve (9) to the active mode number 4 of internal combustion engine, that enables to operate a minimum flow of into (M) is is ensured. Also 5a, 5b also, 6a and 6b of the present invention also refers to a in a preferred embodiment, EGR valve (9) the two shutter (15, 16) for operating a single motor (18), the present embodiment includes DC motor in. EGR valve (9) the air shutter (15) and a EGR gas shutter (16) each being forced to rotate in relation two drive shaft (20, 21) as well as motor (18) shaft (19) includes gear extending from. In the present embodiment in particular, said drive shaft (20, 21) parallel to the each other, in addition motor (18) shaft (19). parallel to. Motor (18) shaft (19) the pinion (22) which are immobilized is, pinion the peripheral teeth set (24) and a central teeth set (25) (these teeth set (24, 25) the concentric overlapping and arranged to) supporting an intermediate gear wheel (23) and serves to direct which drives a primary. Intermediate wheel (23) periphery of teeth set (24) the air shutter (15) to cause rotation of a mechanism (28) a ring gear (26) engages is coupled. Intermediate wheel (23) central teeth set (25) the EGR gas shutter (16) for causing the rotation of ring gear (27) engages is coupled. In in an illustrated embodiment, motor (18) driven in the counterclockwise direction when the pinion (22) to an intermediate wheel (23) to driven a clockwise direction. As a result, intermediate wheel (23) set as gears (24, 25) through the ring gear (26, 27) drives both, these ring gear inclusion of two more shutter (15, 16) built-in in proxy server is driving to. EGR shutter (16) detects the difference between set teeth driving without risk release temperature of the heating units (27) by the rotation of is driven continuously rotating. Closed position (driving teeth set (27) is number 1 end stop (33) to a position in which the wall against an) at an angle and the predetermined position, the present in the embodiment in an angle to [...] to 68° that are open position (driving teeth set (27) is number 2 end stop (34) to a position in which the wall against an) between every position can be. Air shutter (15) driving the driving mechanism (28) the, ring gear (26) by the rotation of shutter (15) that drives the drive shaft (20) is a truck's travelling path number 1 over a portion rotated in a number 2 over a portion a moved distance paths configured to to be rotated, decompression system includes. To this end, in the present embodiment in particular, mechanism (28) a ring gear (27) that runs a wheel (29) includes, wheel (29) the drive surface (30) form a sector a bearing for an opening. Mechanism (28) the in addition, shutter (16) that drives the drive shaft (21) and a rotated integrally with the a drive finger (31) (conventional, "drive (driver)" (31) are publicly known to) includes. Air shutter (15) the wheel (29) of drive surface (30) the fingers (31) against is arranged at a finger is driven by a only when rotation is driven. Therefore, also at the location of 6a, wheel (29) is in the counterclockwise direction when rotating in the finger is the aforementioned arrangement position and not executed, not to download finger (31) or shutter according to (15) prevents movement of the cam plate. Vice versa, for example, also 6b shown in each position of the wheel such as (29) of drive surface (30) the fingers (31) motor further includes a magnet located opposite it does not become the E person , wheel (29) shutter (15) is the driven rotation of a. Wheel (29) is drive surface (30) and finger (31) are arranged against each other in a is of the from the location where the rotates the map and, finger (31) a drive surface (30) against a spring as well as default (default) position, i.e., air shutter (15) a plurality of fingers defined its open position (31) for end stop (32) with the aid of, shutter (15) will bend when encountering (29) movement of the entrained. Shutter (15, 16) motor (18) is driven by intervals governs a dynamism is, longitudinal axis shutter (15, 16) (S) active on the gas pressure in the cross-sectional area of bore (curve (C1) air shutter (15) air management in active on the bore cross-sectional area which curve (C2) the EGR gas shutter (16) in EGR gas (16) active on the cross bore) indicative of to the graph of Figure 3, EGR shutter (16) of the rotational angle of (α) a function of (substantially, direct engagement to enable a a motor (18) shaft (19) provided to angle primary function) is shown as. Gas active on the maximum wherein an individual (S) cross bore and the cross sectional area of bore constitution: represented as percentage. Cross bore (S) of the balloon is shaft (19, 20, 21) rotation of represented as a function primary provided at this time to be noted the straight (C1, C2) curve must less than 0.05. Also 3 as will be seen from, in the present embodiment, EGR shutter (16) of the opening angle of 0° to 28 ° (I) region extending between in number 1, EGR shutter (16) from a closed position, and no more than that are open at an angle of 28° partially open position and is actuated in rotation at. Therefore, EGR shutter (16) is opened, the EGR a an increased level. Also gear when of 6a (i.e., EGR shutter (16) a ring gear (27) is number 1 end stop (33) against the that when the delivery system is placed), EGR shutter (16) but closed, , air shutter (15) is an open. Of Figure 3 number 1 is this state corresponding to point (left region), also by referring to 2a mode of operation is described. Said number 1 region and the remaining part of the curve of Figure 3 (I) of air shutter (15) through rotary driving of (also 2b refers to the inventive operational mode of the high-corresponding) free from EGR shutter (16) the mutual positions of which correspond to through rotary driving of, in this state, air shutter (15) a drive wheel for driving the (29) of drive surface (30) a drive finger (31) against is arranged at a do not go. In the present embodiment, EGR shutter (16) of the opening angle of 68° to 28° number 2 in (II) region extending between, two shutter (15, 16) are driven in rotation which, in particular, EGR shutter (16) that is open gradually continue to the while, additionally air shutter (15) the wheel (29) of drive surface (30) driven by finger (31) are driven in rotation the transmitters is progressively are closed with. By referring to such constitution 2c is mode of operation described. Position gear 6b also, EGR shutter (16) opens onto the a wide angle producing the shutter air which (15) and is closed on the entirely, in other words, , EGR shutter (16) is the opening angle of 68 ° (right region of a) of Figure 3 in last point are closed with a position corresponding to. This position of the ring gear (27) is EGR shutter (16) and driven at its number 2 end stop (34) against the. corresponding to a position to be disposed. By referring to such constitution 2d mode of operation is described. Also as shown in 3, air shutter (15) at the point of this closed, said shutter (15) "J" around gap-shaped leakage air flow thus leave a passageway effective active on the bore cross-sectional area less than 0.05 zero. to be noted. Said number 2 region (II) of starting point, i.e., closed shutter air driven towards a position in which the teeth (15) a corresponds to the point in time the beginning of EGR shutter (16) the opening angle of (in this case, 28°) will bend when encountering (29) of drive surface (30) fingers for (31) via the location of the, thereby are provided to prevent the oxidation said finger (31) for end stop (32) is regulated to using. Substantially, air shutter (15) finger thereby are provided to prevent the oxidation of (31) through rotary driving of the starting point. similar to starting point of said region (II). According to the present invention, said angle is from range of 25° to 35 °, the present in the embodiment has in [...] to 28°. In gray scale 3 also to in the dark (in addition, also shown in 4) relation to number 3 region (III) joins the as must, the areas the aforementioned EGR valve (9) by without applying value, in other words, , EGR shutter (16) is number 2 end stop (34) to be driven in to greater than about 200 Ra of the ring gear (27) continuous rotation. corresponds to a value of cross corresponding boresight. , This end stop (34) by for positioning a, EGR is arranged, such that an angle the shutters are stopped, the present embodiment of value of feeding 68°. EGR shutter (16) of the opening angle of 25° to 35° air an angle over the angle that shutter (15) by disclosure-freezer device and the like, also as the technician knows from 4, while an increased level EGR EGR shutter (16) the opening angle of throughout the range to broader than the derivative may be. EGR shutter (16) when the opening angle of 48° to 0° is, EGR EGR level shutter (16) as well as function the opening angle of relatively linear manner increased. Where the slope of curve at an angle 48° is changed at, and downwardly on a curved portion increasing a steeply angled than, these values (C1, C2) at the intersection of the curve of Figure 3 corresponding the cross bore. However, of even any point (the present embodiment in first few also to the exclusion of), such, as opposed to a curved base secondary derivative is actually always a positive value or zero value of. The, EGR shutter (16) by directly control the opening angle of EGR level can easily be controlled by. Abstract the, EGR valve (9) shutter (15, 16) open angle three major operating phase or mode, i.e., -motor (18) by the rotation of shutter EGR (16) and is opening or closing of, air shutter (15) opens onto the a wide angle producing the traveling state of the mode number 1 which remains as (I), and -motor (18) by the rotation of shutter EGR (16) is opened in the additionally, air shutter (15) is opened and closed with, EGR shutter (16) is the opening angle of flow filters have angle of 25° to 35 °, in the embodiment the present in particular in air flow filters have angle of 28° shutter (15) a disclosure opening of a number 2. (II) mode of operation. State of the SP heads and, EGR valve (9) in operating modes of the internal (is implemented in a digital integrated circuit although) the conventional, internal combustion engine (M) and intake circuit (2a), exhaust circuit (2b) and recycling circuit (2c) as equal to. the aforementioned configured, in particular, of the present invention control method and valve (9) more easily by that may be made from an EGR shutter (16) across the generating the pressure difference result measured, is regulated to by ECU. The present invention in connection with valve with shutter was demonstrated for an although, well as, different blocking other butterfly valve such as a valve is unit may be used. Furthermore, introductory already, a, 3-two way valve a simple valve it possible to replace. The disclosed approach enables an embodiment of the present invention some preferred is although a, other embodiment styles the double tongue the't also necessity. In particular, compatible to and is free from a problem of the aforementioned various embodiment features the first deoxygenator. can be combined with one another,. M:2a internal combustion engine: intake circuit 2b: exhaust circuit 2c: recirculation circuit 6: intake manifold 9: EGR valve 9a:9b inlet port: outlet port 15: air shutter 16: EGR gas shutter The invention relates to a method for controlling an exhaust gas recirculation circuit for an internal combustion engine of a motor vehicle. The engine is linked to an air intake circuit and to a gas exhaust circuit linked to the air intake circuit by the recirculation circuit. A first valve controls the flow of air upstream from the recirculation circuit, and a second valve controls the flow of exhaust gases that are recirculated within the recirculation circuit. The method comprises the following steps: a) the first valve is closed, and the second valve is gradually opened; b) if the second valve is opened at an angle greater than a value between 25° and 35°, the first valve is gradually opened concomitantly to the opening of the second valve. As a result of the invention, the EGR rate is easily controllable. (M) circuit for recirculating exhaust gas of automotive internal combustion engine (2c) as method for controlling, the intake circuit (M) said internal combustion engine (2a) is connected with the in addition, said recirculation circuit (2c) by said intake circuit (2a) connected to the exhaust gas circuit (2b) is connected to, said recirculation circuit (2c) upstream of the air flow rate for regulating number 1 valve (15) is provided, said recirculation circuit (2c) of the exhaust gas recirculated in a for adjusting the rate of passage of number 2 valve (16) is provided to make the more efficient, in automobile exhaust gas recirculation circuit for controlling in method, a) said number 1 valve (15) from a, said number 2 valve (16) and to incrementally and opening the; and b) said number 2 valve (16) is 25° to 35° be at angles greater than value of, such number 2 valve (16) said number 1 and lowered according to the lifting and opening valve (15) that closes and to incrementally to characterized by including step in automobile exhaust gas recirculation method for controlling circuit. According to Claim 1, said number 2 valve (16) the opening angle of the opening of in stopped and the 65° to 85 °, after said number 1 valve (15) a the outer band is substantially fully closed is in automobile exhaust gas recirculation method for controlling circuit. According to Claim 1 or Claim 2, said number 1 valve (15) closed the leaked at a that allows passage of air flow a being configured to in automobile exhaust gas recirculation method for controlling circuit. According to one of Claim 1 to Claim 3, said number 1 and number 2 valve (15, 16) the, said number 1 valve (15) is an inlet port (9a) and a, said number 2 valve (16) is an inlet port (9b), said internal combustion engine the gas is introduced (M) a intake manifold (6) as well as directly or indirectly in communication with the out-flow port (9c) for including 3-way valve (9) is disposed in the exhaust gas recirculation circuit a in automobile for controlling method. According to Claim 4, said number 1 valve (15) and said number 2 valve (16) driving the one or more display elements a single driver motor (18) with said 3-way valve (9) the, -said motor (18) by the rotation of said number 2 valve (16) and is opening or closing of, that are open said number 1 valve (15) the number 1 (I) mode of operation, motor inefficiency due to a duplication of encoding (18) by the rotation of said number 2 valve (16) is opened in the additionally, said number 1 valve (15) is opened and closed with, said number 2 valve (16) is the opening angle of 25° to 35° flow filters have angle of said number 1 valve (15) number 2 mode of operation the start of-freezer device and the like (II) of at least two modes of operation a in automobile exhaust gas recirculation method for controlling circuit.