Summary of the invention
More piece valve gear of the present invention adopts following structure, and it has: a plurality of throttler valves are configured in respectively on the gas-entered passageway corresponding to each cylinder of motor; Throttle plate pin is used to support described a plurality of throttler valve it is opened and closed; And driving mechanism comprises that rotation drives the motor of described throttle plate pin, and wherein, described a plurality of throttler valves are divided into many groups; Described throttle plate pin is made up of the 1st throttle plate pin and the 2nd throttle plate pin that support described throttler valve and be arranged on the straight line by described group; Described actuator configuration become to described the 1st throttle plate pin and the 2nd throttle plate pin each other the inner end of opposite side driving force is provided.
According to this structure, throttler valve can be divided in groups, the driving mechanism by separately is rotated driving to each throttle plate pin that supports throttler valve by group.Therefore, can be according to riving condition with combustion regime, i.e. output is controlled at the optimum state, and, even when carrying out idle speed control, also can carry out same control.Moreover the 1st and the 2nd throttle plate pin is arranged point-blank, and by providing the mode of driving force to be configured in the opposed inside end each other to each throttle plate pin, therefore, each driving mechanism is intensive in the center side near device, can make device stricturization, miniaturization.
In above-mentioned structure, can adopt following structure: on the outboard end of described the 1st throttle plate pin and the 2nd throttle plate pin, dispose respectively and detect the angle detecting sensor that described throttler valve opens and closes angle.
According to this structure, can detect the rotation angle that supports the throttle plate pin of throttler valve by group by angle detecting sensor, and the driving mechanism by separately carries out highly accurate the switching to the minute angle of throttler valve and adjusts, with combustion regime, i.e. output is controlled at the optimum state according to riving condition.
In said structure, can adopt following structure: the runnability according to motor is carried out drive controlling respectively to described a plurality of driving mechanisms.
According to this structure, for example, when constituting by 2 driving mechanisms, can carry out drive controlling according to the accelerator pedal operation to a driving mechanism, and another driving mechanism is carried out drive controlling according to the control signal of making judgement based on driving condition and accelerator pedal operation, perhaps, idling in order to start promotes (fast-idle speed), can only carry out drive controlling to a driving mechanism, and, can also carry out drive controlling fully independently separately by the special-purpose computer that is provided with respectively to each driving mechanism.Can improve the startability of motor, controlled, specific fuel consumption and Security etc. thus.
In said structure, can adopt following structure: in described a plurality of driving mechanisms, by a driving mechanism throttler valve is carried out open and close controlling at least, then, through after the certain hour, throttler valve is carried out open and close controlling by another driving mechanism.
According to this structure, even, also can suppress the rapid change of engine speed, thereby guarantee safe driving in the situation of throttler valve being carried out rapid return.
In said structure, can adopt following structure: in the group of described a plurality of throttler valves, be controlled at specified angle according to the runnability of motor to one group of major general's throttler valve.
According to this structure, because one group throttler valve is controlled at certain aperture, and the throttler valve of controlling other group opens and closes, and can control respectively this group and other group.Therefore, for example, because the engine combustion state difference of each cylinder by carry out the open and close controlling of throttler valve by group, can provide the air corresponding to the optimal dose of combustion position.
In said structure, can adopt following structure: described specified angle is motor controlled angle of throttler valve during with low speed rotation.
According to this structure, when low engine speed is rotated, can only allow 1 driving mechanism work, and the throttler valve aperture is finely tuned, thereby select best angle with the corresponding throttler valve of riving condition.
More piece valve gear of the present invention adopts following structure, and it has: a plurality of throttler valves are configured in respectively on the gas-entered passageway corresponding to each cylinder of motor; Throttle plate pin is used to support described a plurality of throttler valve it is opened and closed; And driving mechanism comprises that rotation drives the motor of described throttle plate pin, and wherein, described a plurality of throttler valves are divided into many groups; Described throttle plate pin is made up of the 1st and the 2nd throttle plate pin that supports described throttler valve and be arranged in parallel by described group; Described driving mechanism is by providing a plurality of driving mechanisms of driving force to form respectively to the described the 1st and the 2nd throttle plate pin; The the 1st and the 2nd throttle plate pin one distolateral on, dispose a driving mechanism in described a plurality of driving mechanism so that the end of the throttle plate pin of Xiang Yifang provides driving force, on another is distolateral, dispose another driving mechanism in described a plurality of driving mechanism so that provide driving force to the end of the opposing party's throttle plate pin.
According to this structure, can on the V-type engine that cylinder is arranged by V-type, driving mechanism balancedly be configured in distolateral and another distolateral both sides of two adjacent throttle plate pins respectively, thereby make whole device stricturization, miniaturization.
In said structure, can adopt following structure: described a plurality of driving mechanisms comprise motor respectively, dispose the motor of a described driving mechanism and the motor of described another driving mechanism in the field between the 1st and the 2nd throttle plate pin.
According to this structure, intensive with being included in the motor of two driving mechanisms that drive two adjacent throttle plate pins by two throttle plate pins, i.e. in the space of throttle body clamping, thereby make device stricturization, miniaturization more.
In said structure, can adopt following structure: the described the 1st and the outboard end of the 2nd throttle plate pin on dispose respectively and detect the angle detecting sensor that described throttler valve opens and closes angle.
According to this structure, can detect the rotation angle that supports the throttle plate pin of throttler valve by group by angle detecting sensor, and the driving mechanism by separately carries out highly accurate the switching to the minute angle of throttler valve and adjusts, with combustion regime, i.e. output is controlled at the optimum state according to riving condition.
In said structure, can adopt following structure: the runnability according to motor is carried out drive controlling respectively to described a plurality of driving mechanisms.
According to this structure, for example, when constituting by 2 driving mechanisms, can carry out drive controlling according to the accelerator pedal operation to a driving mechanism, and another driving mechanism is carried out drive controlling according to the control signal of making judgement based on driving condition and accelerator pedal operation, perhaps, idling in order to start promotes (fast-idle speed), can only carry out drive controlling to a driving mechanism, and, can also carry out drive controlling fully independently separately by the special-purpose computer that is provided with respectively to each driving mechanism.Can improve the startability of motor, controlled, specific fuel consumption and Security etc. thus.
In said structure, can adopt following structure: in described a plurality of driving mechanisms, by a driving mechanism throttler valve is carried out open and close controlling at least, then, through after the certain hour, throttler valve is carried out open and close controlling by another driving mechanism.
According to this structure, even, also can suppress the rapid change of engine speed, thereby guarantee safe driving in the situation of throttler valve being carried out rapid return.
In said structure, can adopt following structure: in the group of described a plurality of throttler valves, be controlled at specified angle according to the runnability of motor to one group of major general's throttler valve.
Thus, because one group throttler valve is controlled in certain aperture, and the throttler valve of controlling other group opens and closes, and can control respectively this group and other group.Therefore, for example, because the engine combustion state difference of each cylinder, the switching by by group control throttler valve can provide the air corresponding to the optimal dose of combustion position.
In said structure, can adopt following structure: specified angle is motor controlled angle of throttler valve when revolving with low speed.
According to this structure, when motor during, can only allow 1 driving mechanism work, and the throttler valve aperture is finely tuned, thereby can select the best angle of the throttler valve that adapts with riving condition with low speed rotation.
Embodiment
Below with reference to accompanying drawings embodiment of the present invention are described.
Fig. 1 to Fig. 3 represents a kind of embodiment of relevant more piece valve gear of the present invention, Fig. 1 is the block diagram of the control system when this device is applicable to the motor that is installed on the cart, Fig. 2 is the sectional drawing of this device, and Fig. 3 is the profile of the driving mechanism of this device of expression.
As shown in Figure 1, this control system comprises motor 1, be installed in the more piece valve gear 2 of the gas handling system of motor 1, drive 2 driving mechanisms 60 that are located in the device 2 respectively, 70 drive circuit 3,4, the angle detecting sensor 91 of the throttler valve angular orientation of detection device 2,92 and throttle valve angle testing circuit 5,6, the turn-sensitive device 7 of the rotating speed of detection of engine 1 and speed detect circuit 8, other quantity of state of detection of engine 1 (for example, the water temperature of motor 1, intake temperature, suction pressure, atmospheric pressure around the motor 1 etc.) sensor 9 (representing cooling-water temperature sensor in the drawings) and quantity of state testing circuit 10, store various control informations in advance, the memory section 11 of driving map etc., administer the control device 12 of total system control, detection is by the accelerator angle sensor 13 of the rotation angle position of the accelerator pedal (handle) of driver's operation, and accelerator angle testing circuit 14 etc.
This device 2 is 4 throttle valve devices that are applicable to in-line arrangement 4 Cylinder engines, as shown in Figure 2, it has 4 throttle bodies 20 of delimiting gas-entered passageway 21, is disposed at 4 throttler valves the 30, the 1st throttle plate pin 41 and the 2nd throttle plate pin 42, bearing the 50, the 1st driving mechanism 60 and the 2nd driving mechanism the 70, the 1st Returnning spring 81 and the 2nd Returnning spring the 82, the 1st angle detecting sensor 91 and the 2nd angle detecting sensor 92 and connecting bolt 100 etc. on each gas-entered passageway 21 respectively.
Throttle body 20 is molded products made from aluminium or resin material, as shown in Figure 2, it is that concavity department of assembly 23, the mating face 24 of the gas-entered passageway 21 of sub-circular, the through hole 22 that connects throttle plate pin 41 and 42, running in bearings 50 and the bolt hole 25 that inserts connecting bolt 100 etc. constitute by the cross section.The slightly larger in diameter of through hole 22 is in the external diameter of the 1st throttle plate pin 41 and the 2nd throttle plate pin 42, in order to avoid contact with throttle plate pin.
As shown in Figure 2, the 1st throttle plate pin 41 and the 2nd throttle plate pin 42 are arranged point-blank.The 1st throttle plate pin 41 rotates and supports 2 throttler valves 30 in left side of the 1st group freely, and they are opened and closed simultaneously.The 2nd throttle plate pin 42 rotates and supports 2 throttler valves 30 in right side of the 2nd group freely, and they are opened and closed simultaneously.
Because bearing 50 is disposed at every each throttler valve 30 of sandwich, throttle plate pin 41,42 can rotate smoothly, and can prevent distortion, guarantees respectively to organize the action synchronous (carrying out on-off action mutually with same position) of throttler valve 30.Bearing 50 can adopt ball bearing, roller bearing and surface of contact itself to have the various bearings such as cylindrical bearing of bearing function.And, in a plurality of bearings 50, have at least a part to adopt not only radially but also at the bearing of axially also playing a supporting role.
As shown in Figures 2 and 3, the 1st driving mechanism 60 by DC motor 61, be fixed on gear 62 on the output shaft 61a, be fixed on the inner end of the 1st throttle plate pin 41 and constitute with the adjustment screw 64 of the stop position of gear 62 meshed gears 63 and regulation gear 63.
The 1st Returnning spring 81 be positioned at gear 63 near, it applies 2 throttler valves 30 that a kind of rotatory force makes the 1st group to the 1st throttle plate pin 41 and resets to and close the side stop position.
When DC motor 61 when halted state begins to rotate, by gear 62 and gear 63, make the 1st throttle plate pin 41 opposing the 1st Returnning spring 81 applied forces and rotate the 1st group 2 throttler valves, 30 complete opening gas-entered passageways 21.On the other hand, if cut off the power supply of DC motor 61, then under the rotatory force effect that the 1st Returnning spring 81 applies, the 1st throttle plate pin 41 rotates round about, and 2 throttler valves 30 of the 1st group reset to the stop position of closing side.
As shown in Figures 2 and 3, the 2nd driving mechanism 70 by DC motor 71, be fixed on gear 72 on the output shaft 71a, be fixed on the inner end of the 2nd throttle plate pin 42 and constitute with the adjustment screw 74 of the stop position of gear 72 meshed gears 73 and regulation gear 73.
The 2nd Returnning spring 82 be positioned at gear 73 near, it applies 2 throttler valves 30 that a kind of rotatory force makes the 2nd group to the 2nd throttle plate pin 42 and resets to and close the side stop position.
When DC motor 71 when halted state begins to rotate, by gear 72 and gear 73, make the 2nd throttle plate pin 42 opposing the 2nd Returnning spring 82 applied forces and rotate the 2nd group 2 throttler valves, 30 complete opening gas-entered passageways 21.On the other hand, if cut off the power supply of DC motor 71, then under the rotatory force effect that the 2nd Returnning spring 82 applies, the 2nd throttle plate pin 42 rotates round about, and 2 throttler valves 30 of the 2nd group reset to the stop position of closing side.
As mentioned above, the 1st driving mechanism 60 and the 2nd driving mechanism 70 comprise train of gearings, because by providing the mode of driving force to be configured to opposed inside end each other, these parts are intensive in central authorities, make device 2 stricturizations, miniaturization with the 1st throttle plate pin 41 and the 2nd throttle plate pin 42.
As shown in Figure 2, the 1st angle detecting sensor 91 and the 2nd angle detecting sensor 92 are the non-contact angle sensors that are disposed at the outboard end separately of the 1st throttle plate pin 41 and the 2nd throttle plate pin 42 respectively, angular position of rotation to throttle plate pin 41,42, promptly, the angular position of rotation of the throttler valve 30 of the angular position of rotation of the 1st group throttler valve 30 and the 2nd group detects, and by angular detection circuit 5,6 to control device 12 output detection signals.
Work to above-mentioned more piece valve gear describes below.
Under common operating mode, DC motor 61,71 bases are rotated to a direction from the control signal of control device 12, and by gear 62,63 and gear 72,73 rotary driving force are delivered to the 1st throttle plate pin 41 and the 2nd throttle plate pin 42.So, the rotatory force that the 1st throttle plate pin 41 and the 2nd throttle plate pin 42 opposing Returnning springs 81,82 apply, beginning is rotated to a direction, and the throttler valve 30 of the 1st group and the 2nd group is from the direction rotation of stop position to gas-entered passageway 21 complete openings.
On the other hand, if DC motor 61,71 is according to rotating round about from the control signal of control device 12, then the 1st throttle plate pin 41 and the 2nd throttle plate pin 42 begin round about to rotate under the rotatory force effect that Returnning spring 81,82 applies, the direction rotation that the throttler valve 30 of the 1st group and the 2nd group is closed to gas-entered passageway 21 from the position of whole unlatchings.If cut off the power supply of DC motor 61,71, the 1st throttle plate pin 41 and the 2nd throttle plate pin 42 quick rotation under the rotatory force effect that Returnning spring 81,82 applies then makes the throttler valve 30 of the 1st group and the 2nd group turn back to stop position.
Promptly, under common operating mode, according to the condition of running load etc., DC motor 61 and 71 simultaneously controlled, throttler valve 30 to the 1st group and the 2nd group carries out driven for opening and closing simultaneously, to keep the optimal aperture to the signal of accelerator angle sensor 13.
Under other situation beyond the common operating mode, when simultaneously the air quantity of all cylinders of motor being adjusted with the driving of same throttler valve, only change the aperture of throttler valve a little, the increase of the air quantity of supplying with to motor just produces very big influence, therefore, if the minute angle to throttler valve is not carried out high-precision adjustment, then be difficult to supply with the air of optimal dose.So driving that need not same throttler valve is adjusted the air quantity of all cylinders simultaneously.For example, make 2 throttler valves in left side 30 of the 1st group keep certain aperture if control a side motor 61, and control the opposing party's DC motor 71 opens and closes the 2nd group right side throttler valve 30, and air quantity is adjusted by the throttler valve of each group, then owing to make one group throttler valve keep certain aperture in advance, compare when simultaneously the air quantity of all cylinders of motor being adjusted with the driving of same throttler valve, the influence of the increase of the air quantity that can supply with to motor is suppressed to inferior limit, thereby supplies with the air of optimal dose.Its result, A/D converter, angle transducer also can not use high performance product, therefore can reduce cost.
Also have, because the length of the state of cooling of motor and outlet pipe is different, the combustion regime of each cylinder of motor is also different.Therefore, as mentioned above, make 2 throttler valves in left side 30 of the 1st group keep certain aperture if control a side motor 61, and control the opposing party's DC motor 71 opens and closes the 2nd group right side throttler valve 30, then can supply with the air of the optimal dose that is fit to combustion regime to each different cylinder of combustion characteristic respectively.
In addition, reach maximum in the aperture of the throttler valve 30 of the 1st group and the 2nd group, when vehicle will suddenly quicken, because of the moment of torsion of motor becomes big suddenly, the driver can be subjected to the anxious influence that brings quickened, and can't guarantee safe driving.In this case, make the 1st group left side throttler valve 30 keep quickening preceding aperture if control a side motor 61, and control the opposing party's DC motor 71 opens and closes the 2nd group right side throttler valve 30 according to the acceleration situation, then because by the air quantity of group adjusting to the motor supply, can relax moment of torsion and become big rapidly, the driver can avoid the influence that anxious acceleration brings, thereby guarantees safe driving.
On the other hand, under idle state,, for example, only suitably drive DC motor 61,, that is, the aperture of the 1st group throttler valve 30 is finely tuned the 1st throttle plate pin 41 according to drive signal from control device 12.
Particularly, when carrying out the idle speed control (ISC) of motor, do not establishing IACV (Idle Air Control Valve) in addition, under the situation of wanting simultaneously the air quantity of all cylinders of motor to be adjusted with the driving of same throttler valve, for the variation of the idling speed that reaches expection, be necessary to carry out the adjustment of atomic little valve valve opening.Therefore, angle transducer, A/D converter also need to adopt high performance product.But, as mentioned above, make 2 throttler valves in left side 30 of the 1st group keep certain aperture if control a side DC motor 61, and control the opposing party's DC motor 71 opens and closes the 2nd group right side throttler valve 30, then owing to make one group throttler valve keep certain aperture in advance, compare when simultaneously the air quantity of all cylinders of motor being adjusted with the driving of same throttler valve, the adjustment that needn't carry out small valve valve opening can be supplied with the corresponding air quantity of variation with the idling speed of expecting, angle transducer, A/D converter also can not use high performance product, therefore can realize cost degradation.In this way, when carrying out idle speed control, also can suitably control the driven for opening and closing of throttler valve 30 by group.
In addition, when having carried out making the operation that throttler valve returns rapidly, according to the drive signal from control device 12, for example, one in the DC motor 61,71 by after the reverse driving, and another is again by reverse driving.That is, one group throttler valve 30 carries out after the closing motion, and the throttler valve 30 of another group then carries out closing motion.Time difference is set like this, and drives throttler valve 30, then can suppress the rapid change of the rotating speed of motor 1, prevent braking nose dive, skid, phenomenon such as overturning, thereby carry out safe driving by group.
On the contrary, make vehicle carry out urgency when quickening, according to the drive signal from control device 12, after in the DC motor 61,71 one was driven, another was driven again.That is, a side throttler valve 30 carries out after the breakdown action, and the throttler valve of another group then carries out breakdown action.Like this, except the aperture that makes a group keeps certain control, the time difference also is set, and drives throttler valve 30 by group, also can suppress the rapid change of the rotating speed of motor 1, the driver can avoid the anxious influence that brings quickened, thereby guarantees safe driving.
Fig. 4 to Fig. 6 represents other embodiment of relevant more piece valve gear of the present invention.Its control system is identical to those shown in Fig. 1.
This device 110 is 4 throttle valve devices that are applicable to V-type 4 Cylinder engines, as Fig. 4 to shown in Figure 6, it have 4 throttle bodies 120 of delimiting gas-entered passageway 121, respectively be disposed at 4 throttler valves the 130, the 1st throttle plate pin 141 and the 2nd throttle plate pin 142 on each gas-entered passageway 121, with identical bearing the 50, the 1st driving mechanism 160 noted earlier and the 2nd driving mechanism the 170, the 1st Returnning spring 181 and the 2nd Returnning spring the 182, the 1st angle detecting sensor 191 and the 2nd angle detecting sensor 192, spacer 200 and connecting plate 210 etc.
Throttle body 120 is molded products made from aluminium or resin material, to shown in Figure 6, it is that the concavity department of assembly 123, engagement lugs 124 etc. of the gas-entered passageway 121 of sub-circular, the through hole 122 that connects throttle plate pin 141 and 142, running in bearings 50 constitute by the cross section as Fig. 4.The slightly larger in diameter of through hole 122 is in the external diameter of the 1st throttle plate pin 141 and the 2nd throttle plate pin 142, in order to avoid contact with throttle plate pin.
In addition, 2 throttle bodies 120 in left side and 2 throttle bodies 120 on right side interconnect by spacer 200 respectively, and its integral body links together securely by connecting plate 210 then.And spacer 200 has run-through channel 201 and assembling recess 202 as shown in Figure 6.
As Fig. 4 and shown in Figure 6, the 1st throttle plate pin 141 and the 2nd throttle plate pin 142 are arranged with certain spaced and parallel.The 1st throttle plate pin 141 rotates and supports 2 throttler valves 130 in left side of the 1st group freely, and they are opened and closed simultaneously.The 2nd throttle plate pin 142 rotates and supports 2 throttler valves 130 in right side of the 2nd group freely, and they are opened and closed simultaneously.
In addition, V-type engine is also the same with in line engine, because inblock cylinder, cylinder gap, the state of cooling of motor and the length difference of outlet pipe, combustion characteristic is difference to some extent.Therefore, for example, controlling the 1st driving mechanism 160 makes its 1st throttle plate pin 141 to the front-seat cylinder that is positioned at the vehicle front wheel side that driving force is provided, make its 2nd throttle plate pin 142 that driving force is provided and control the 2nd driving mechanism 170 to the final vacuum cylinder that is positioned at the vehicle rear wheel side, and they are driven independently of one another, thus, can supply with the air of optimal dose to each inblock cylinder that combustion characteristic has nothing in common with each other.
Extremely shown in Figure 6 as Fig. 4, the 1st driving mechanism 1 60 is disposed at distolateral (device 110 distolateral) of the 1st throttle plate pin 141 and the 2nd throttle plate pin 142, by DC motor 161, be fixed on small gear 161a, gear 162 (gearwheel 162a, small gear 162b) on the output shaft, be fixed on the 1st throttle plate pin 141 ends and constitute with the adjustment screw 164 of the stop position of gear 162 (small gear 162b) meshed gears 163 and regulation gear 163.
DC motor 161 is arranged between the 1st throttle plate pin 141 and the 2nd throttle plate pin 142, that is, be clipped in the space between the left and right sides throttle body 120.
The 1st Returnning spring 181 roughly is arranged on the centre of the 1st throttle plate pin 141, and it applies rotatory force to the 1st throttle plate pin 141, makes 2 throttler valves 130 of the 1st group reset to the stop position of closing side.
So, DC motor 161 begins to rotate from halted state, then by gear 162 and gear 163, the 1 throttle plate pins, 141 opposing the 1st Returnning spring 181 applied forces and rotate, 2 throttler valves 130 of the 1st group are to the direction rotation of complete opening gas-entered passageway 121.On the other hand, if cut off the power supply of DC motor 161, then under the rotatory force effect that the 1st Returnning spring 181 applies, the 1st throttle plate pin 141 rotates round about, and 2 throttler valves 130 of the 1st group reset to the stop position of closing side.
Extremely shown in Figure 6 as Fig. 4, the 2nd driving mechanism 170 is disposed at another of the 1st throttle plate pin 141 and the 2nd throttle plate pin 142 distolateral (another of device 110 is distolateral), by DC motor 171, be fixed on small gear 171a, gear 172 (gearwheel 172a, small gear 172b) on the output shaft, be fixed on the 2nd throttle plate pin 142 ends and constitute with the adjustment screw 174 of the stop position of gear 172 (small gear 172b) meshed gears 173 and regulation gear 173.DC motor 171 is arranged between the 1st throttle plate pin 141 and the 2nd throttle plate pin 142, that is, be clipped in the space between the left and right sides throttle body 120.
The 2nd Returnning spring 182 roughly is arranged on the centre of the 2nd throttle plate pin 142, and it applies rotatory force to the 2nd throttle plate pin 142, makes 2 throttler valves 130 of the 2nd group reset to the stop position of closing side.
So, if DC motor 171 begins to rotate from halted state, then by gear 172 and gear 173, the 2 throttle plate pins, 142 opposing the 2nd Returnning spring 182 applied forces and rotate, 2 throttler valves 130 of the 2nd group are to the direction rotation of complete opening gas-entered passageway 121.On the other hand, if cut off the power supply of DC motor 171, then under the rotatory force effect that the 2nd Returnning spring 182 applies, the 2nd throttle plate pin 142 is moving round about to be changeed, and 2 throttler valves 130 of the 2nd group reset to the stop position of closing side.
As mentioned above, the 1st driving mechanism 160 and the 2nd driving mechanism 170 comprise train of gearings, because of balancedly being disposed at the both sides of the 1st throttle plate pin 141 and the 2nd throttle plate pin 142, can make device 110 stricturizations and miniaturization, and, in the space that DC motor 161,171 is configured in by throttle body 120 clampings, parts are intensive in the inboard, thereby make device 110 miniaturization more.
Extremely shown in Figure 6 as Fig. 4, the 1st angle detecting sensor 191 and the 2nd angle detecting sensor 192 are the non-contact angle sensors that are disposed at each end of the 1st throttle plate pin 141 and the 2nd throttle plate pin 142 respectively, it is to the angular position of rotation of throttle plate pin 141,142, promptly, the angular position of rotation of the throttler valve 130 of the angular position of rotation of the 1st group throttler valve 130 and the 2nd group detects, and by foregoing angular detection circuit 5,6 to control device 12 output detection signals.
In addition, the control action of this device 110 is identical with embodiment noted earlier, therefore no longer describes.
In the above-described embodiment,, enumerated 4 throttle valve devices, but the present invention is not limited to this as the more piece valve gear, 2,3 or 5 and above more piece valve gear in all can adopt structure of the present invention.
In addition, in the above-described embodiment, as driving mechanism, enumerated the structure that comprises train of gearings, but the present invention is not limited to this, other driving mechanisms such as chain-driven, belt transmission all can adopt.
Moreover, in the above-described embodiment,, enumerated the motor that is installed on the cart, but the present invention is not limited to this, also applicable to the high-performance enginer that is installed on other vehicle such as automobile as the motor that is suitable for more piece valve gear of the present invention.