CN101389830A - Variable valve timing apparatus and control method therefor - Google Patents
Variable valve timing apparatus and control method therefor Download PDFInfo
- Publication number
- CN101389830A CN101389830A CN 200780006336 CN200780006336A CN101389830A CN 101389830 A CN101389830 A CN 101389830A CN 200780006336 CN200780006336 CN 200780006336 CN 200780006336 A CN200780006336 A CN 200780006336A CN 101389830 A CN101389830 A CN 101389830A
- Authority
- CN
- China
- Prior art keywords
- timing
- area
- actuator
- situation
- variable valve
- 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.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims description 15
- 230000008859 change Effects 0.000 claims description 44
- 230000007246 mechanism Effects 0.000 claims description 42
- 238000002485 combustion reaction Methods 0.000 claims description 36
- 230000009467 reduction Effects 0.000 abstract description 29
- 239000000446 fuel Substances 0.000 description 12
- 230000001276 controlling effect Effects 0.000 description 8
- 230000005540 biological transmission Effects 0.000 description 7
- 230000006866 deterioration Effects 0.000 description 5
- 238000002347 injection Methods 0.000 description 5
- 239000007924 injection Substances 0.000 description 5
- 230000009183 running Effects 0.000 description 5
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 4
- 239000002826 coolant Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- Y02T10/18—
Landscapes
- Output Control And Ontrol Of Special Type Engine (AREA)
- Valve Device For Special Equipments (AREA)
Abstract
An ECU executes a program including the step of stopping power supply to an electric motor if a phase of an intake valve is in a first region between the most retarded angle and CA (1) (YES at S108). In the case where the phase of the intake valve is in the first region, the rotational speed of relative rotation between the output shaft of the electric motor and a sprocket is reduced at reduction gear ratio R (1) thereby to vary the phase of the intake valve. In the case where the phase of the intake valve is in a second region between CA (2) and the most advanced angle, the rotational speed of the relative rotation is reduced at reduction gear ratio R (2) (R (1) > R (2)) thereby to vary the phase of the intake valve.
Description
Technical field
The present invention relates to variable valve timing apparatus and the controlling method that is used for variable valve timing apparatus.Particularly, the present invention relates to the timing of valve opening/when closing is changed the variable valve timing apparatus that reaches according to the variable quantity of actuator operated amount, and relate to the controlling method that is used for this variable valve timing apparatus.
Background technique
Known traditionally VVT (Variable Valve Time), VVT change the phase place (crank angle) of intake valve or exhauxt valve opens/close according to operational situation.Usually, VVT changes phase place by making camshaft with respect to rotations such as sprocket wheels, and described camshaft makes intake valve or exhauxt valve opens/close.Make the camshaft rotation by for example hydraulic mechanism or motor as actuator.Particularly, make with motor under the situation of camshaft rotation, and comparing, be difficult to obtain the torque that camshaft is rotated with the situation of hydraulic way rotating cam axle.Therefore, coming with motor under the situation of rotating cam axle, the rotating speed of the output shaft of motor is by reductions such as reducing gears, thereby makes the camshaft rotation.Under situation, the degree of phase change is subjected to the restriction of reducing gear.
Japanese Patent Laid Open Publication No.2004-150397 discloses a kind of valve timing adjusting apparatus, and it has bigger phase change degrees of freedom.Disclosed valve timing adjusting apparatus is set to transmission system among the Japanese Patent Laid Open Publication No.2004-150397, this transmission system is used for the driving axial driven shaft transmission of driving torque from internal-combustion engine, so that the timing of at least one opening and closing in intake valve and the exhaust valve is regulated at least one opening and closing in intake valve and the exhaust valve.This valve timing adjusting apparatus comprises: the first rotor, and it passes through to rotate around rotation centerline from the driving torque of live axle; Second rotor, it rotates around rotation centerline together and along the direction identical with the first rotor with the rotation of the first rotor, so that driven shaft rotates synchronously, wherein, second rotor can rotate with respect to the first rotor; And control gear, it has control member and changes controlling component and the radial distance of rotation centerline.The first rotor has defined first hole, and first hole forms first track, and first track extends to change the radial distance of itself and rotation centerline.First hole contacts with the controlling component that passes first track, contacts the both sides that occur in first hole between first hole and the controlling component, and the first rotor is towards described two sideway swivels.Second rotor has defined second hole, second hole forms second track, second track extends to change the radial distance of itself and rotation centerline, second hole contacts with the controlling component that passes second track, contact the both sides that occur in second hole between second hole and the controlling component, second rotor is towards described two sideway swivels.First track and second track tilt toward each other along the sense of rotation of the first rotor and the sense of rotation of second rotor.In this valve timing apparatus, do not produce at motor under the situation of torque, phase place is kept.
According to disclosed valve timing adjusting apparatus in this communique, first hole of the first rotor forms first track (first track extends to change its radial distance from rotation centerline), and contact with the control member that passes first track, contact the both sides that occur in first hole between first hole and the control member, the first rotor is towards described two sideway swivels.In addition, second hole of second rotor forms second track (second track extends to change its radial distance from rotation centerline), and contact with the control member that passes second track, contact the both sides that occur in second hole between second hole and the control member, second rotor is towards described two sideway swivels.Here, first track and second track tilt toward each other along the sense of rotation of the first rotor and the sense of rotation of second rotor.Thereby, in control gear work when changing control member from the radial distance of rotation centerline, control member presses at least one in first hole and second hole, thereby makes control member pass first track and second track, thereby second rotor is rotated with respect to the first rotor.In the valve timing adjusting apparatus of working in the above described manner, second rotor depends on the degree that the length of first track and second track and first track and second track tilt toward each other with respect to the phase change degree of the first rotor.Make their change radial distance with rotation centerline by extending first track and second track, the length of determining track with incline towards each other aspect realized relative freedom.Like this, also increased and set the degrees of freedom of second rotor, thereby increased the phase change degree of driven shaft with respect to live axle with respect to the phase change degree of the first rotor.
Yet, as in the disclosed valve timing adjusting apparatus among the Japanese Patent Laid Open Publication No.2004-150397, when motor does not produce torque, promptly when the power supply to motor stops, in order to keep phase place, must increase as the reduction speed ratio of phase change amount, make the output shaft of motor can not rotate by being delivered to the torque of motor from camshaft with respect to the ratio of electric motor operated amount.Yet if reduction speed ratio is higher relatively, the zone that can change the On/Off timing narrows down.
Summary of the invention
The purpose of this invention is to provide a kind of variable valve timing apparatus etc., it can also can change the On/Off timing by stopping that phase place is kept in the power supply of actuator on the scope of broad.
Variable air valve apparatus according to an aspect of the present invention changes the On/Off timing of any one at least in intake valve and the exhaust valve.Variable valve timing apparatus comprises: actuator, and it operates variable valve timing apparatus; Change mechanism, it is in the On/Off timing, and the operation amount with respect to actuator changes the On/Off timing with first variable quantity under the situation in the first area, and is in the On/Off timing that the operation amount with respect to actuator changes the On/Off timing with second variable quantity under the situation in the second area different with the first area; And operating unit.Operating unit is controlled the On/Off timing by control to the power supply of actuator, and under the On/Off timing was in situation in the first area, operating unit made that by stopping that the On/Off timing is controlled in the power supply of actuator the On/Off timing is kept.
According to the present invention, be in the On/Off timing that the operation amount with respect to actuator changes the On/Off timing with first variable quantity under the situation in the first area.Be in the On/Off timing that the operation amount with respect to actuator changes the On/Off timing with second variable quantity bigger than first variable quantity under the situation in the second area.Thereby, can in second area, widely change the On/Off timing.On the other hand, in the first area, the variable quantity of On/Off timing is less.In other words, reduction speed ratio is higher.Thereby, for example, even do not produce at actuator under the state of torque, also can so that when motor moves by acting on that torque on the camshaft comes drive actuator and the variation of the On/Off timing that causes is suppressed.Thereby, in the first area, the power supply of actuator is stopped, Open from This Side/close timing to be kept.Thereby can provide a kind of can keep the On/Off timing and can change the variable valve timing apparatus of On/Off timing on wide scope the power supply of actuator by stopping.
Preferably, the operation amount with respect to actuator changes the On/Off timing with first variable quantity under the situation in the first area except being in the On/Off timing, and be in the On/Off timing that the operation amount with respect to actuator changes outside the On/Off timing with second variable quantity under the situation in the second area, change mechanism also under the On/Off timing is in situation in the 3rd zone different with first area and second area, change the On/Off timing according to the operation amount of actuator, make rate of change between the variable quantity of the operation amount of actuator and On/Off timing.Operating unit is set in the target timing of On/Off timing in first area, second area and the 3rd zone in the zone except the 3rd zone, and controls the On/Off timing and make the On/Off timing become the target timing.
According to the present invention, under the On/Off timing is in situation in the 3rd zone, change the On/Off timing, make that the ratio (that is reduction speed ratio) between the variable quantity of the operation amount of actuator and On/Off timing changes.For example, in the zone between first area and second area, reduction speed ratio changes.Thereby, the On/Off timing being changed to second area from the first area or changing to from second area under the situation of first area, the variable quantity of open and close timing can little by little increase or reduce with respect to the operation amount of actuator.Thereby the unexpected step that can suppress the variable quantity of On/Off timing changes.Yet, in the 3rd zone, be difficult to predict variable quantity, thereby controllability can deterioration with respect to the On/Off timing of the operation amount of actuator, thus deterioration the precision of On/Off timing.Thereby, the target timing of On/Off timing is set in the middle of first area, second area and the 3rd zone in the zone except the 3rd zone, control the On/Off timing then, make this target timing of realization.Thereby the On/Off timing can be set to the timing at least one that is in first area and second area.Thereby the controllability of the deterioration of On/Off timing is suppressed, and the precision of the deterioration of On/Off timing is suppressed.
More preferably, the first area is the zone that postpones with respect to second area.
According to the present invention, in the zone that postpones, stop power supply to actuator, keep the On/Off timing thus.Thereby, for example in the On/Off timing is arranged on motor in the zone of delay more continually, can increase the frequency that stops the power supply of actuator.Thereby the Economy of fuel finally is improved.
Preferably, variable valve timing apparatus rotates by the camshaft that makes the output shaft that is connected to internal-combustion engine and changes the On/Off timing.Under the On/Off timing is in situation in the first area, if the rotating speed of internal-combustion engine is lower than desired speed, then operating unit is by stopping that the On/Off timing is controlled in the power supply of actuator, make that the On/Off timing is kept, if and the rotating speed of internal-combustion engine is higher than desired speed, then operating unit is controlled the On/Off timing by power supply is provided to actuator, makes that the On/Off timing is kept.
According to the present invention, if the rotating speed of internal-combustion engine (that is, the rotating speed of the output shaft of internal-combustion engine) is lower than desired speed, then stop power supply to actuator, keep the On/Off timing thus.If the rotating speed of internal-combustion engine is higher than desired speed, then provide power supply to actuator, keep the On/Off timing.Thereby, so, can stop power supply to actuator because the torque that acts on the camshaft that is caused by the driving of internal-combustion engine is less even without also keeping under the situation of On/Off timing actuator supply electric power.Making greatly under the situation of On/Off timing change, by actuator is supplied electric power and can accurately be kept the On/Off timing because of the torque that acts on the camshaft that causes by the driving of internal-combustion engine.
Preferably, variable valve timing apparatus rotates by the camshaft that makes the output shaft that is connected to internal-combustion engine and changes the On/Off timing.In the On/Off timing is under the situation of the maximum delay timing in the first area, if the rotating speed of internal-combustion engine is lower than desired speed, then operating unit is by stopping that the On/Off timing is controlled in the power supply of actuator, make that the On/Off timing is kept, if and the rotating speed of internal-combustion engine is higher than desired speed, then operating unit is controlled the On/Off timing by power supply is provided to actuator, makes that the On/Off timing is kept.
According to the present invention, if the rotating speed of internal-combustion engine (that is, the rotating speed of the output shaft of internal-combustion engine) is lower than desired speed, then stop power supply to actuator, thus the On/Off timing is maintained the maximum delay timing in the first area.If the rotating speed of internal-combustion engine is higher than desired speed, then provide power supply to actuator, thus the On/Off timing is maintained the maximum delay timing in the first area.Thereby, so, can stop power supply to actuator because the torque that acts on the camshaft that is caused by the driving of internal-combustion engine is less even without also the On/Off timing being maintained under the situation of maximum delay timing actuator supply electric power.Making greatly under the situation of On/Off timing change, by actuator is supplied electric power and the On/Off timing accurately can be maintained the delay timing because of the torque that acts on the camshaft that causes by the driving of internal-combustion engine.
Description of drawings
The schematic representation of Fig. 1 has illustrated on it structure of installing according to the motor of the vehicle of the variable valve timing apparatus of first embodiment of the invention.
Fig. 2 shows the contrast figure that the phase place to intake valve defines.
Fig. 3 is the sectional view that the air inlet vvt mechanism is shown.
Fig. 4 is the sectional view along the A-A among Fig. 3.
Fig. 5 is (first) sectional view along the B-B among Fig. 3.
Fig. 6 is (second) sectional view along the B-B among Fig. 3.
Fig. 7 is the sectional view along the C-C among Fig. 3.
Fig. 8 is the sectional view along the D-D among Fig. 3.
Fig. 9 shows the reduction speed ratio of air inlet vvt mechanism integral body.
Figure 10 shows guide plate with respect to the relation between the phase place of the phase place of sprocket wheel and intake valve.
The flowchart illustrations of Figure 11 the control structure of the program carried out by the ECU in the first embodiment of the invention.
The contrast figure of Figure 12 has defined the phase place of the intake valve in the second embodiment of the invention.
The flowchart illustrations of Figure 13 the control structure of the program carried out by the ECU in the third embodiment of the invention.
The flowchart illustrations of Figure 14 the control structure of the program carried out by the ECU in the fourth embodiment of the invention.
Embodiment
With reference to the accompanying drawings, below embodiments of the invention are described.In the following description, similar parts are represented by similar label.They also use identical title and play same function.Therefore will no longer repeat its detailed description.
First embodiment
With reference to figure 1, provide explanation to the motor of vehicle, the variable valve timing apparatus according to first embodiment of the invention is installed on this vehicle.
Motor 1000 is v type eight cylinder engines, and it has " A " bank of cylinder 1010 and " B " bank of cylinder 1012, and each bank of cylinder comprises one group of four cylinder.Here, also can use any motor except the V8 motor.
Air sucks the motor 1000 from air-strainer 1020.Institute's amount of air drawn is regulated by closure 1030.Closure 1030 is by electric motor driven electronic throttle.
Air is fed in the cylinder 1040 through intake manifold 1032.Air mixes in cylinder 1040 (firing chamber) with fuel.Fuel is directly injected to the cylinder 1040 from sparger 1050.In other words, the spray-hole of sparger 1050 is arranged in the cylinder 1040.
Burner oil in aspirating stroke.The fuel injection timing is not limited to aspirating stroke.In addition, in the present embodiment, motor 1000 is described as direct fuel-injection engine, the spray-hole of the sparger 1050 that it had is arranged in the cylinder 1040.But, except straight spray sparger 1050, the tuned port injection device can also be set.And, the tuned port injection device can only be set.
Air-fuel mixture in the cylinder 1040 is lighted by spark plug 1060, and thereby burning.Air-fuel mixture (being exhaust) after the burning is purified by three-way catalyst 1070, is discharged into outside vehicle subsequently.The combustion air fuel mixture presses down piston 1080, thereby makes bent axle 1090 rotations.
The phase place of intake valve 1100 (On/Off timing) is by air inlet vvt mechanism 2000 controls that are arranged at admission cam shaft 1120.The phase place of exhaust valve 1110 (On/Off timing) is by exhaust vvt mechanism 3000 controls that are arranged at exhaust cam shaft 1130.
In the present embodiment, make admission cam shaft 1120 and exhaust cam shaft 1130 rotations by vvt mechanism, with control intake valve 1100 and exhaust valve 1110 phase place separately.Here, phase control method is not limited to aforesaid this a kind of method.
Air inlet vvt mechanism 2000 is operated by motor 2060 (not shown among Fig. 3).Motor 2060 is by ECU (electronic control unit) 4000 controls.The electric current of motor 2060 and voltage are detected by ammeter (not shown) and voltage meter (not shown), and measurement result is imported into ECU4000.
The rotating speed (that is engine speed NE) and the signal of crank angle of expression bent axle 1090 are input to ECU 4000 from CKP 5000.In addition, (phase place: the signal position of camshaft on sense of rotation) (signal of expression intake valve 1100 and exhaust valve 1110 phase place separately) is input to ECU 4000 from cam-position sensor 5010 to expression admission cam shaft 1120 and exhaust cam shaft 1130 phase place separately.
In addition, be input to ECU 4000 from the signal of the water temperature (coolant temperature) of the expression motor 1000 of coolant temperature sensor 5020 and from the signal of the air inflow (sucking or be taken into the amount of the air of motor 1000) of the expression motor 1000 of airometer 5030.
According to from these signals of sensor input and be stored in contrast figure and program the storage (not shown), the phase place of ECU 4000 control examples such as throttle opening, ignition timing, fuel injection timing, amount of fuel injected, intake valve 1100 and the phase place of exhaust valve 1110, thus make motor 1000 with desired running state operation.
In the present embodiment, ECU 4000 determines the phase place of intake valve 1100 according to contrast figure shown in Figure 2, and this contrast figure uses engine speed NE and air inflow KL as parameter.Stored the phase place of determining intake valve 1100 at a plurality of contrast figure of each coolant temperature.
Below, will provide further specifying of air inlet vvt mechanism 2000.Here, exhaust vvt mechanism 3000 can be constructed in the same manner with air inlet vvt mechanism 2000 as described below.
As shown in Figure 3, air inlet vvt mechanism 2000 comprises sprocket wheel 2010, lobe plate 2020, linkage mechanism 2030, guide plate 2040, retarder 2050 and motor 2060.
Sprocket wheel 2010 process chains etc. are connected to bent axle 1090.The rotating speed of sprocket wheel 2010 is half of rotating speed of bent axle 1090.Admission cam shaft 1120 is arranged to the spin axis of sprocket wheel 2010 concentric, and can be with respect to sprocket wheel 2010 rotations.
Fig. 5 is along the cross section that B-B got among Fig. 3, and Fig. 6 shows the state that the phase place of intake valve 1100 shifts to an earlier date with respect to the state among Fig. 5, and as shown in Figure 5 and Figure 6, arm (1) 2031 is connected by arm (2) 2032 with lobe plate 2020.
Arm (2) 2032 is supported for and makes that this arm can be around pin (3) 2074 and with respect to arm (1) 2031 swing.In addition, arm (2) 2032 also is supported for and makes that this arm can be around pin (4) 2076 and with respect to lobe plate 2020 swings.
Pair of links mechanism 2030 makes admission cam shaft 1120 with respect to sprocket wheel 2010 rotations, thus and the phase place of change intake valve 1100.Therefore, even a linkage mechanism in the paired linkage mechanism 2030 also can change the phase place of intake valve 1100 with another linkage mechanism because any damage etc. are former thereby fracture.
With reference to figure 3, control pin 2034 is arranged on the surface of each linkage mechanism 2030 (arm (2) 2032) again, and described surface is the surface towards guide plate 2040 of linkage mechanism 2030.Control pin 2034 is provided with one heart with pin (3) 2074.Slide in the steering channel 2042 of each control pin 2034 in being arranged at guide plate 2040.
Each control pin 2034 slides in the steering channel 2042 of guide plate 2040 with radially skew.The radial deflection of each control pin 2034 makes admission cam shaft 1120 with respect to sprocket wheel 2010 rotations.
Fig. 7 is along the cross section that C-C got among Fig. 3, and as shown in Figure 7, steering channel 2042 is formed spiral-shaped, and the rotation of guide plate 2040 makes each radially skew of control pin 2034 thus.Here, the shape of steering channel 2042 is not limited thereto.
As shown in Figure 7, during against the end of steering channel 2042, the operation of linkage mechanism 2030 is restricted at control pin 2034.Phase place when therefore, control pin 2034 is against the end of steering channel 2042 is the phase place of maximum delay angle or full aduance.
With reference to figure 3, in guide plate 2040, in the surface of retarder 2050, be provided with a plurality of recessed portions 2044 again, be used to make guide plate 2040 and retarder 2050 to be connected to each other at it.
Fig. 8 shows along the cross section that D-D got among Fig. 3.Internal gear 2054 is set to make a part and external gear 2052 engagements of its tooth.Under the rotating speed of the output shaft of motor 2060 situation identical with the rotating speed of sprocket wheel 2010, coupling 2062 and internal gear 2054 are with the rotating speed rotation identical with external gear 2052 (sprocket wheel 2010).In the case, guide plate 2040 is with the rotating speed rotation identical with sprocket wheel 2010, thereby the phase place of intake valve 1100 is maintained.
Make coupling 2062 around the axle center 2064 during with respect to external gear 2052 rotation, at motor 2060 in internal gear 2054 internal gear 2054 correspondingly 2064 revolution as a whole in eccentric axis 2066 rotations around the axle center.Rotatablely moving of internal gear 2054 makes guide plate 2040 with respect to sprocket wheel 2010 rotations, thereby changes the phase place of intake valve 1100.
By retarder 2050, guide plate 2040 and linkage mechanism 2030 output shaft of motor 2060 and the counterrotating rotating speed between the sprocket wheel 2010 (operation amount of motor 2060) are reduced, change the phase place of intake valve 1100.Here, output shaft that also can increasing motor 2060 and the phase place that the counterrotating rotating speed between the sprocket wheel 2010 changes intake valve 1100.
As shown in Figure 9, the reduction speed ratio of air inlet vvt mechanism 2000 integral body (the counterrotating rotating speed between the output shaft of motor 2060 and the sprocket wheel 2010 is for the ratio of phase changing capacity) can have the value based on the phase place of intake valve 1100.In the present embodiment, reduction speed ratio is high more, and the variable quantity of phase place is just more little with respect to the output shaft and the counterrotating rotating speed between the sprocket wheel 2010 of motor 2060.
When the phase place of intake valve 1100 was in the first area of from the maximum delay angle to CA (1), the reduction speed ratio of air inlet vvt mechanism 2000 integral body was R (1).Be in when CA (2) (CA (2) compares CA (1) in advance) is to the second area of full aduance in the phase place of intake valve 1100, the reduction speed ratio of air inlet vvt mechanism 2000 integral body is R (2) (R (1)〉R (2)).
When the phase place of intake valve 1100 was in the 3rd zone from CA (1) to CA (2), the reduction speed ratio of air inlet vvt mechanism 2000 integral body changed with predetermined change rate ((R (2)-R (1))/(CA (2)-CA (1))).
The function of the air inlet vvt mechanism 2000 of this variable valve timing apparatus below will be described.
Under the situation that the phase place that will make intake valve 1100 (admission cam shaft 1120) shifts to an earlier date, operating motor 2060 makes guide plate 2040 with respect to sprocket wheel 2010 rotations, thereby the phase place of intake valve 1100 is shifted to an earlier date.
Under the phase place of intake valve 1100 is in situation in the first area between maximum delay angle and the CA (1), reduce the output shaft and the counterrotating rotating speed between the sprocket wheel 2010 of motor 2060 with reduction speed ratio R (1), so that the phase place of intake valve 1100 shifts to an earlier date.
Under the phase place of intake valve 1100 is in situation in the second area between CA (2) and the full aduance, reduce the output shaft and the counterrotating rotating speed between the sprocket wheel 2010 of motor 2060 with reduction speed ratio R (2), so that the phase place of intake valve 1100 shifts to an earlier date.
Under the situation of the phase delay that will make intake valve 1100, the output shaft that makes motor 2060 with respect to sprocket wheel 2010 along with the situation that its phase place is shifted to an earlier date under the side rotate in the opposite direction.Under the situation that will make this phase delay, similar with the situation that this phase place is shifted to an earlier date, when the phase place of intake valve 1100 is in the first area between maximum delay angle and the CA (1), reduce the output shaft of motor 2060 and the counterrotating rotating speed between the sprocket wheel 2010 with reduction speed ratio R (1), so that this phase delay.In addition, when the phase place of intake valve 1100 is in the second area between CA (2) and the full aduance, reduce the output shaft of motor 2060 and the counterrotating rotating speed between the sprocket wheel 2010 with reduction speed ratio R (2), so that this phase delay.
Therefore, as long as the output shaft of motor 2060 is identical with counterrotating direction between the sprocket wheel 2010, then the phase place of intake valve 1100 is shifted to an earlier date or delay for first area between maximum delay angle and the CA (1) and the second area both between CA (2) and the full aduance.Here, for the second area between CA (2) and the full aduance, can make this phase place in advance more or postpone more.Like this, can in the scope of broad, change phase place.
In addition, since higher for the reduction speed ratio of the first area between maximum delay angle and the CA (1), so, need bigger torque for the output shaft of motor 2060 being rotated by the torque that acts on the admission cam shaft 1120 along with motor 1000 runnings.Therefore, under the situation that motor for example 2060 is shut down,, also can the rotation of the output shaft of the motor 2060 that caused by the torque that acts on the admission cam shaft 1120 be limited even motor 2060 does not produce torque.Therefore, can limit actual phase changes from the phase place of determining according to control.
Under the phase place of intake valve 1100 is in situation in the 3rd zone between CA (1) and the CA (2), counterrotating rotating speed between the output shaft of motor 2060 and the sprocket wheel 2010 slows down with reduction speed ratio (this reduction speed ratio changes with predetermined change rate), and this can cause the phase place of intake valve 1100 to shift to an earlier date or postpone.
Therefore, change to second area from the first area or change to from second area under the situation of first area in this phase place, phase changing capacity can increase or reduce gradually with respect to the output shaft of motor 2060 and the counterrotating rotating speed between the sprocket wheel 2010.In this way, can the change of the unexpected step type of the variable quantity of phase place be limited, thus the flip-flop of restriction phase place.Therefore, can improve the ability of control phase.
With reference to Figure 11, with the control structure of explanation by the program that the ECU 4000 that controls according to the variable valve timing control device of present embodiment is carried out.
In step (hereinafter being abbreviated as S) 100, ECU 4000 uses aforesaid contrast figure shown in Figure 2 to determine the target phase of intake valve 1100 based on engine speed NE and air inflow KL.
At S102, ECU 4000 makes motor 260 operations, makes the phase place of intake valve 1100 become target phase.
At S104, ECU 4000 detects the phase place of admission cam shaft 1120, i.e. the phase place of intake valve 1100 based on the signal from cam-position sensor 5010 transmission.
At S106, ECU 4000 judges whether the phase place and the difference between the target phase of intake valve 1100 are equal to or less than threshold value.When the phase place of intake valve 1100 and the difference between the target phase are equal to or less than threshold value (S106 is a "Yes"), handle proceeding to S108.Otherwise (S106 is a "No") handled and returned S102.
At S108, ECU 4000 judges whether the phase place of intake valves 1100 is in the first area between maximum delay angle and the CA (1).If the phase place of intake valve 1100 is in (S108 is a "Yes") in the first area, then handles and proceed to S110.Otherwise (S108 is a "No") handles proceeding to S112.
At S110, ECU 4000 stops motor 2060 power supplies.At S112, ECU 4000 continues motor 2060 power supplies with the relative rotation of generation between the output shaft that prevents motor 2060 and the sprocket wheel 2010.More specifically, under the state that continues motor 2060 power supplies, the phase change of intake valve 1100 is stopped.
To operation according to the variable valve timing apparatus of present embodiment be described according to said structure and flow chart now.
In the running of motor 1000, use above-described contrast figure shown in Figure 2, based on engine speed NE and air inflow KL, determine the target phase (S100) of intake valve 1100.Motor 2060 operations make and realize this target phase (S102).
When the phase place of intake valve 1100 and the difference between the target phase are equal to or less than threshold value (S106 is a "Yes"), whether the phase place of intake valve 1100 are in the first area between maximum delay angle and the CA (1) judge (S108).
As mentioned above, in the first area (S208 is a "Yes"), reduction speed ratio is higher.Therefore, even be in the state that motor 2060 does not produce torque, the output shaft of motor 2060 is also unlikely to be rotated by acting on the torque on the admission cam shaft 1120.In other words, although the output shaft of motor 2060 by with the rotating speed rotation (be forced to rotation) identical with sprocket wheel 2010, the relative rotation between the unlikely output shaft that causes motor 2060 and the sprocket wheel 2010, the unlikely variation of the phase place of intake valve 1100.
Then, stop motor 2060 power supplies (S110).Like this, under the state that stops motor 2060 power supplies, can keep the phase place of intake valve 1100.Therefore can finally improve fuel economy.
On the other hand, outside the first area (S108 is a "No"), reduction speed ratio is not high.Therefore, do not produce at motor 2060 under the state of torque, by the torque that acts on the admission cam shaft 1120 output shaft of motor 2060 is rotated with respect to sprocket wheel 2010, thereby can not keep the phase place of intake valve 1100.Therefore, continue, to produce counterrotating torque (S112) between the output shaft that do not cause motor 2060 and the sprocket wheel 2010 to motor 2060 power supplies.
As mentioned above, in the variable valve timing apparatus according to present embodiment, under the phase place of intake valve was in situation the first area of from the maximum delay angle to CA (1), the reduction speed ratio of air inlet vvt mechanism integral body was R (1).Under the situation the phase place of intake valve is in from CA (2) to the second area at maximum delay angle, the reduction speed ratio of air inlet vvt mechanism integral body is the R (2) less than R (1).Therefore, phase place can widely change in second area.In addition, if the phase place of intake valve is in the first area, even then the phase place that does not produce intake valve under the state of torque at motor also unlikely changes.Thereby, stop power supply to motor.As a result, the Economy of fuel finally is improved.
Noting, is that phase place as a first area part (for example, the phase place at maximum delay angle under) the situation, can stop power supply to motor 2060 to keep this phase place in the phase place of intake valve 1100 only.
Replace or be additional to the phase place that detects intake valve 1100 based on signal, can detect the phase place of intake valve 1100 based on the rotating speed (revolution of accumulative total) of motor 2060 from cam-position sensor 5010 transmission.
Second embodiment
Below, second embodiment of the invention will be described.Present embodiment and aforementioned first embodiment's difference are: the target phase of intake valve 1100 is not determined in the 3rd zone between CA (1) and CA (2).Other structure is identical with aforementioned first embodiment.Function is also identical.Thereby, will no longer repeat its detailed explanation herein.
As shown in figure 12, at the contrast figure of the phase place (target phase) that is used for determining intake valve 1100, be defined in phase place in the first area between maximum delay angle and the CA (1) and the phase place in the second area between CA (2) and full aduance.On the other hand, be not defined in phase place in the 3rd zone between CA (1) and the CA (2).
Thereby the situation that can be restricted is: air inlet vvt mechanism 2000 is controlled so as to phase place and drops in the 3rd zone that reduction speed ratio changes.Thereby the situation that can limit is: phase place is controlled in owing to the reduction speed ratio that changes is difficult in the zone of variable quantity of predicted phase.As a result, can prevent the deterioration of phase accuracy.
In addition, to be formed the phase place of intake valve 1100 be phase place in the first area to contrast figure as shown in figure 12 more continually.Thereby, can be by stopping that the power supply of motor 2060 is increased the frequency that phase place obtains keeping.Thereby, can further improve fuel economy.
The 3rd embodiment
Below, the third embodiment of the present invention will be described.Present embodiment and different being of aforementioned first embodiment, under the phase place of intake valve is in situation the first area of from the maximum delay angle to CA (1), if engine speed NE is equal to or less than threshold value NE (0), then stop power supply to motor 2060 to keep phase place.Other structure is identical with aforementioned first embodiment.Function is also identical.Thereby, will no longer repeat its detailed description herein.
With reference to Figure 13, will illustrate by the control structure of control according to the program of the ECU4000 execution of the variable valve timing apparatus of present embodiment.Notice that the processing identical with aforementioned first embodiment represented with identical number of steps, and will no longer be repeated its description herein.
At S200, ECU 4000 comes detection of engine speed NE based on the signal from CKP 5000 transmission.At S202, ECU 4000 judges whether engine speed NE is equal to or less than threshold value NE (0).If engine speed NE is equal to or less than threshold value NE (0) (step S202 is a "Yes"), then handles and proceed to S110.Otherwise (S202 is a "No") handles proceeding to S112.
To operation according to the variable valve timing apparatus of present embodiment be described according to said structure and flow chart.
In the running of motor 1000, use above-described contrast figure shown in Figure 2, based on engine speed NE and air inflow KL, determine the target phase (S100) of intake valve 1100.Motor 2060 operations make and realize this target phase (S102).
When the phase place of intake valve 1100 and the difference between the target phase are equal to or less than threshold value (S106 is a "Yes"), whether the phase place of intake valve 1100 are in the first area between maximum delay angle and the CA (1) judge (S108).
In the first area (is "Yes" at S108), reduction speed ratio is higher.Therefore, even be in the state that motor 2060 does not produce torque, the output shaft of motor 2060 is also unlikely to be rotated by acting on the torque on the admission cam shaft 1120.In other words, although the output shaft of motor 2060 with the rotating speed rotation (be forced to rotation) identical with sprocket wheel 2010, the relative rotation between the unlikely output shaft that causes motor 2060 and the sprocket wheel 2010, the unlikely variation of the phase place of intake valve 1100.
Yet if engine speed NE is higher, if promptly the rotating speed of admission cam shaft 1120 is higher, bigger torque meeting acts on the admission cam shaft 1120.In the case, the output shaft of motor 2060 can rotate by acting on the torque on the admission cam shaft 1120.
Thereby, detection of engine speed NE (S200), and if detected engine speed NE be equal to or less than threshold value NE (0) (is "Yes" at S202), then stop motor 2060 power supply (S110).
Even the phase place of intake valve 1100 is in the first area between maximum delay angle and the CA (1) (is "Yes" at S108), if engine speed NE is higher than threshold value NE (0) (is "No" at S202), then continue motor 2060 power supply, make not counterrotating torque (S112) between the output shaft of motor 2060 and sprocket wheel 2010 to produce.
Thereby the situation that can be restricted is: under the state that the output shaft of motor 2060 can rotate by acting on the torque on the admission cam shaft 1120, stop the power supply to motor 2060.Thereby, can accurately keep phase place.
As mentioned above, in variable valve timing apparatus,, then stop power supply to motor if engine speed NE is equal to or less than threshold value NE (0) according to present embodiment, if and engine speed NE is higher than threshold value NE (0), then continue power supply to motor to keep this phase place.Thereby, under the state that the output shaft of motor can rotate by acting on admission cam shaft, not stopping power supply to motor, power supply continues.Thereby, can accurately keep phase place.
Note, in the phase place of intake valve 1100 as the phase place of a first area part (for example is, the phase place at maximum delay angle) under the situation, if engine speed NE is equal to or less than threshold value NE (0), then can stop power supply to motor 2060 to keep this phase place, if and engine speed NE is higher than threshold value NE (0), can continue power supply, to keep this phase place to motor 2060.
The 4th embodiment
Below, the fourth embodiment of the present invention will be described.Present embodiment and different being of aforementioned first embodiment: be under the situation of phase place at maximum delay angle in the phase place of intake valve,, then stop power supply to motor 2060 to keep phase place if engine speed NE is equal to or less than threshold value NE (0).Other structure is identical with aforementioned first embodiment.Function is also identical.Thereby, will no longer repeat its detailed description herein.
With reference to Figure 14, will illustrate by the control structure of control according to the program of the ECU4000 execution of the variable valve timing apparatus of present embodiment.Notice that the processing identical with aforementioned first embodiment represented with identical number of steps, and will no longer be repeated its description herein.
At S300, ECU 4000 judges whether the phase place of intake valve 1100 is the phase places at maximum delay angle, that is, and and the phase place at maximum delay angle in the first area.If the phase place of intake valve 1100 is the phase places (is "Yes" at S300) at maximum delay angle, then handles and proceed to S302.Otherwise (is "No" at S300) handles proceeding to S112.
At S302, ECU 4000 comes detection of engine speed NE based on the signal from CKP 5000 transmission.At S304, ECU4000 judges whether engine speed NE is equal to or less than threshold value NE (0).If engine speed NE is equal to or less than threshold value NE (0) (is "Yes" at S304), then handles and proceed to S110.Otherwise (is not at S304) handles proceeding to S112.
In the running of motor 1000, use above-described contrast figure shown in Figure 2, based on engine speed NE and air inflow KL, determine the target phase (S100) of intake valve 1100.Motor 2060 operations make and realize this target phase (S102).
When the phase place of intake valve 1100 and the difference between the target phase are equal to or less than threshold value (is "Yes" at S106), whether be that the phase place at maximum delay angle is judged (S300) to the phase place of intake valve 1100.
The phase place at maximum delay angle is the phase place in the first area.As mentioned above, because reduction speed ratio is higher in the first area, so even be in the state that motor 2060 does not produce torque, the output shaft of motor 2060 is also unlikely to be rotated by acting on the torque on the admission cam shaft 1120.In other words, although the output shaft of motor 2060 with the rotating speed rotation (be forced to rotation) identical with sprocket wheel 2010, the relative rotation between the unlikely output shaft that causes motor 2060 and the sprocket wheel 2010, the unlikely variation of the phase place of intake valve 1100.
Yet if engine speed NE is higher, if promptly the rotating speed of admission cam shaft 1120 is higher, bigger torque meeting acts on the admission cam shaft 1120.In the case, the output shaft of motor 2060 can rotate by acting on the torque on the admission cam shaft 1120.
Thereby, detection of engine speed NE (S200), and if detected engine speed NE be equal to or less than threshold value NE (0) (is "Yes" at S304), then stop motor 2060 power supply (S110).
Even the phase place of intake valve 1100 is the phase places (is "Yes" at S300) at maximum delay angle, if engine speed NE is higher than threshold value NE (0) (is "No" at S304), then continue motor 2060 power supply, make not counterrotating torque (S112) between the output shaft of motor 2060 and sprocket wheel 2010 to produce.In the present embodiment, continue power supply, make control sell 2034 ends of pressing steering channel 2042, thus phase place is maintained the phase place place at maximum delay angle motor 2060.
Thereby the situation that can be restricted is: under the state that the output shaft of motor 2060 can rotate by acting on the torque on the admission cam shaft 1120, stop the power supply to motor 2060.Thereby, can accurately keep phase place.
As mentioned above, in variable valve timing apparatus,, then stop power supply to motor if engine speed NE is equal to or less than threshold value NE (0) according to present embodiment, if and engine speed NE is higher than threshold value NE (0), then continue power supply to motor to keep this phase place.Thereby, under the state that the output shaft of motor can rotate by acting on admission cam shaft, not stopping power supply to motor, power supply continues.Thereby, can accurately keep phase place.
Notice that embodiment disclosed herein is schematic and nonrestrictive in all respects.Scope of the present invention is limited by every claim rather than above-mentioned explanation, and therefore intention will drop on the implication of equivalent of every claim and the institute in the scope change be included in.
Claims (15)
1. variable valve timing apparatus, it changes the On/Off timing of any one at least in intake valve (1100) and the exhaust valve (1110), and described variable valve timing apparatus comprises:
Actuator (2060), it operates described variable valve timing apparatus;
Change mechanism (2000,3000), it is in described On/Off timing, and the operation amount with respect to described actuator (2060) changes described On/Off timing with first variable quantity under the situation in the first area, and being in described On/Off timing that the operation amount with respect to described actuator (2060) changes described On/Off timing with second variable quantity under the situation in the second area different with described first area, described second variable quantity is greater than described first variable quantity; And
Operating unit (4000), wherein,
Described operating unit (4000) is controlled described On/Off timing by control to the power supply of described actuator (2060), and under described On/Off timing is in situation in the described first area, by stopping that described On/Off timing is controlled in the power supply of described actuator (2060), make that described On/Off timing is kept.
2. variable valve timing apparatus according to claim 1, wherein,
The operation amount with respect to described actuator (2060) changes described On/Off timing with described first variable quantity under the situation in the described first area except being in described On/Off timing, and be in described On/Off timing that the operation amount with respect to described actuator (2060) changes outside the described On/Off timing with described second variable quantity under the situation in the described second area, described change mechanism (2000,3000) also under described On/Off timing is in situation in the 3rd zone different with described second area with described first area, operation amount according to described actuator (2060) changes described On/Off timing, make rate of change between the variable quantity of the operation amount of described actuator (2060) and described On/Off timing, and
Described operating unit (4000) is set in the target timing of described On/Off timing in described first area, described second area and described the 3rd zone in the zone except described the 3rd zone, and controls described On/Off timing and make described On/Off timing become described target timing.
3. variable valve timing apparatus according to claim 1, wherein, described first area is the zone that postpones with respect to described second area.
4. variable valve timing apparatus according to claim 1, wherein,
Described variable valve timing apparatus rotates by the camshaft (1120,1130) that makes the output shaft that is connected to internal-combustion engine (1000) and changes described On/Off timing, and
Under described On/Off timing is in situation in the described first area, if the rotating speed of described internal-combustion engine (1000) is lower than desired speed, then described operating unit (4000) is by stopping that described On/Off timing is controlled in the power supply of described actuator (2060), make that described On/Off timing is kept, if and the rotating speed of described internal-combustion engine (1000) is higher than described desired speed, then described operating unit (4000) makes that by providing power supply to control described On/Off timing to described actuator (2060) described On/Off timing is kept.
5. variable valve timing apparatus according to claim 1, wherein,
Described variable valve timing apparatus rotates by the camshaft (1120,1130) that makes the output shaft that is connected to internal-combustion engine (1000) and changes described On/Off timing, and
In described On/Off timing is under the situation of the maximum delay timing in described first area, if the rotating speed of described internal-combustion engine (1000) is lower than desired speed, then described operating unit (4000) is by stopping that described On/Off timing is controlled in the power supply of described actuator (2060), make that described On/Off timing is kept, if and the rotating speed of described internal-combustion engine (1000) is higher than described desired speed, then described operating unit (4000) makes that by providing power supply to control described On/Off timing to described actuator (2060) described On/Off timing is kept.
6. controlling method that is used for variable valve timing apparatus, described variable valve timing apparatus changes the On/Off timing of any one at least in intake valve (1100) and the exhaust valve (1110), described variable valve timing apparatus comprises actuator (2060) and changes mechanism (2000,3000), described actuator (2060) is operated described variable valve timing apparatus, described change mechanism (2000,3000) be in described On/Off timing that the operation amount with respect to described actuator (2060) changes described On/Off timing with first variable quantity under the situation in the first area, and be in described On/Off timing that the operation amount with respect to described actuator (2060) changes described On/Off timing with second variable quantity under the situation in the second area different with described first area, described second variable quantity is greater than described first variable quantity
Described controlling method may further comprise the steps: by control described On/Off timing is controlled in the power supply of described actuator (2060),
The step of the described On/Off timing of described control may further comprise the steps: under described On/Off timing is in situation in the described first area, by stopping that described On/Off timing is controlled in the power supply of described actuator (2060), make that described On/Off timing is kept.
7. the controlling method that is used for variable valve timing apparatus according to claim 6, wherein, the operation amount with respect to described actuator (2060) changes described On/Off timing with described first variable quantity under the situation in the described first area except being in described On/Off timing, and be in described On/Off timing that the operation amount with respect to described actuator (2060) changes outside the described On/Off timing with described second variable quantity under the situation in the described second area, described change mechanism (2000,3000) also under described On/Off timing is in situation in the 3rd zone different with described second area with described first area, operation amount according to described actuator (2060) changes described On/Off timing, make rate of change between the variable quantity of the operation amount of described actuator (2060) and described On/Off timing
Described controlling method is further comprising the steps of: the target timing of described On/Off timing is set in described first area, described second area and described the 3rd zone in the zone except described the 3rd zone, and
The step of the described On/Off timing of described control may further comprise the steps: control described On/Off timing and make described On/Off timing become described target timing.
8. the controlling method that is used for variable valve timing apparatus according to claim 6, wherein, described first area is the zone that postpones with respect to described second area.
9. the controlling method that is used for variable valve timing apparatus according to claim 6, wherein,
Described variable valve timing apparatus rotates by the camshaft (1120,1130) that makes the output shaft that is connected to internal-combustion engine (1000) and changes described On/Off timing, and
Under described On/Off timing is in situation in the described first area, the step of the described On/Off timing of described control may further comprise the steps: if the rotating speed of described internal-combustion engine (1000) is lower than desired speed, then by stopping that described On/Off timing is controlled in the power supply of described actuator (2060), make that described On/Off timing is kept, if and the rotating speed of described internal-combustion engine (1000) is higher than described desired speed, then, make that described On/Off timing is kept by providing power supply to control described On/Off timing to described actuator (2060).
10. the controlling method that is used for variable valve timing apparatus according to claim 6, wherein,
Described variable valve timing apparatus rotates by the camshaft (1120,1130) that makes the output shaft that is connected to internal-combustion engine (1000) and changes described On/Off timing, and
In described On/Off timing is under the situation of the maximum delay timing in described first area, the step of the described On/Off timing of described control may further comprise the steps: if the rotating speed of described internal-combustion engine (1000) is lower than desired speed, then by stopping that described On/Off timing is controlled in the power supply of described actuator (2060), make that described On/Off timing is kept, if and the rotating speed of described internal-combustion engine (1000) is higher than described desired speed, then, make that described On/Off timing is kept by providing power supply to control described On/Off timing to described actuator (2060).
11. a variable valve timing apparatus, it changes the On/Off timing of any one at least in intake valve (1100) and the exhaust valve (1110), and described variable valve timing apparatus comprises:
Actuator (2060), it operates described variable valve timing apparatus;
Change mechanism (2000,3000), it is in described On/Off timing, and the operation amount with respect to described actuator (2060) changes described On/Off timing with first variable quantity under the situation in the first area, and being in described On/Off timing that the operation amount with respect to described actuator (2060) changes described On/Off timing with second variable quantity under the situation in the second area different with described first area, described second variable quantity is greater than described first variable quantity; And
Control gear (4000), it is used for by control described On/Off timing being controlled in the power supply of described actuator (2060),
Described control gear (4000) comprises the device that is used for following control: be under the situation of described first area in described On/Off timing, by stopping that described On/Off timing is controlled in the power supply of described actuator (2060), make that described On/Off timing is kept.
12. variable valve timing apparatus according to claim 11, wherein,
The operation amount with respect to described actuator (2060) changes described On/Off timing with described first variable quantity under the situation in the described first area except being in described On/Off timing, and be in described On/Off timing that the operation amount with respect to described actuator (2060) changes outside the described On/Off timing with described second variable quantity under the situation in the described second area, described change mechanism (2000,3000) also under described On/Off timing is in situation in the 3rd zone different with described second area with described first area, operation amount according to described actuator (2060) changes described On/Off timing, make rate of change between the variable quantity of the operation amount of described actuator (2060) and described On/Off timing
Described variable valve timing apparatus also comprises setting device (4000), described setting device is used for the target timing of described On/Off timing is set in the zone except described the 3rd zone of described first area, described second area and described the 3rd zone, and
Described control gear (4000) comprises that being used to control described On/Off timing makes described On/Off timing become the device of described target timing.
13. variable valve timing apparatus according to claim 11, wherein, described first area is the zone that postpones with respect to described second area.
14. variable valve timing apparatus according to claim 11, wherein,
Described variable valve timing apparatus rotates by the camshaft (1120,1130) that makes the output shaft that is connected to internal-combustion engine (1000) and changes described On/Off timing, and
Under described On/Off timing is in situation in the described first area, described control gear (4000) also comprises the device that is used for following control: if the rotating speed of described internal-combustion engine (1000) is lower than desired speed, then by stopping that described On/Off timing is controlled in the power supply of described actuator (2060), make that described On/Off timing is kept, if and the rotating speed of described internal-combustion engine (1000) is higher than described desired speed, then, make that described On/Off timing is kept by providing power supply to control described On/Off timing to described actuator (2060).
15. variable valve timing apparatus according to claim 11, wherein,
Described variable valve timing apparatus rotates by the camshaft (1120,1130) that makes the output shaft that is connected to internal-combustion engine (1000) and changes described On/Off timing, and
In described On/Off timing is under the situation of the maximum delay timing in described first area, described control gear (4000) comprises the device that is used for following control: if the rotating speed of described internal-combustion engine (1000) is lower than desired speed, then by stopping that described On/Off timing is controlled in the power supply of described actuator (2060), make that described On/Off timing is kept, if and the rotating speed of described internal-combustion engine (1000) is higher than described desired speed, then, make that described On/Off timing is kept by providing power supply to control described On/Off timing to described actuator (2060).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP045783/2006 | 2006-02-22 | ||
| JP2006045783 | 2006-02-22 | ||
| JP218713/2006 | 2006-08-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101389830A true CN101389830A (en) | 2009-03-18 |
Family
ID=40478391
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200780006336 Pending CN101389830A (en) | 2006-02-22 | 2007-02-07 | Variable valve timing apparatus and control method therefor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101389830A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102410095A (en) * | 2010-09-21 | 2012-04-11 | 日立汽车***株式会社 | Apparatus for and method of controlling variable valve timing mechanism |
| CN102782288A (en) * | 2010-11-08 | 2012-11-14 | 丰田自动车株式会社 | Control device for engine |
| CN105339608A (en) * | 2013-07-10 | 2016-02-17 | 博格华纳公司 | Positional control of actuator shaft for e-phaser and method of calibration |
-
2007
- 2007-02-07 CN CN 200780006336 patent/CN101389830A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102410095A (en) * | 2010-09-21 | 2012-04-11 | 日立汽车***株式会社 | Apparatus for and method of controlling variable valve timing mechanism |
| CN102410095B (en) * | 2010-09-21 | 2016-01-27 | 日立汽车***株式会社 | The control gear of Variable Valve Time gear and controlling method |
| CN102782288A (en) * | 2010-11-08 | 2012-11-14 | 丰田自动车株式会社 | Control device for engine |
| CN102782288B (en) * | 2010-11-08 | 2016-06-08 | 丰田自动车株式会社 | The control device of electromotor |
| CN105339608A (en) * | 2013-07-10 | 2016-02-17 | 博格华纳公司 | Positional control of actuator shaft for e-phaser and method of calibration |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101410593B (en) | Variable valve timing apparatus and method of detecting valve phase thereof | |
| CN101466920B (en) | Variable valve timing apparatus and control method thereof | |
| US7520261B2 (en) | Apparatus for and method of controlling intake operation of an internal combustion engine | |
| CN101410608B (en) | Variable valve timing apparatus | |
| CN101321931A (en) | Variable valve timing apparatus | |
| CN101389829B (en) | Variable valve timing apparatus and control method therefor | |
| CN101466919B (en) | Variable valve timing apparatus and control method therefor | |
| US20100170461A1 (en) | Variable valve timing apparatus | |
| CN101389830A (en) | Variable valve timing apparatus and control method therefor | |
| US8165785B2 (en) | Variable valve timing apparatus and control method therefor | |
| JP4299327B2 (en) | Variable valve timing device | |
| JP5299103B2 (en) | Engine valve timing control device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20090318 |