JPS6161926A - Engine torque fluctuation controller - Google Patents

Abstract

PURPOSE:To suppress fluctuation of torque while improving the acceleration performance by functioning a generator or an electric driver synchronously with periodic fluctuation of engine torque while increasing the positive torque to be applied from the electric driver under acceleration. CONSTITUTION:Two kind of rotary side electromagnetic coils 8, 9 and a magnetic member 10 are provided on the outercircumference of a flywheel 2 fixed to the end of a crank shaft 1 while a fixed side electromagnetic coil 7 is provided onto the innercircumferential face of a fixing member 6 secured to a cylinder block 3 around the flywheel 2. An electric driver for applying positive torque onto the crank shaft 1 through power supply to said coils 7, 8 and a generator for applying reverse torque onto the crank shaft 1 through power supply to said coils 7, 9 are constructed. It is controlled to function the generator upon increase of torque while to function the electric driver upon decrease of torque and to increase positive torw torque to be applied through electric driver under acceleration.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to (1) a one-herc variation control device for suppressing torque variation of a crank;

(N, Y coming technology) Generally speaking, automatic crankshafts, etc. - "Cran smell - C (, With the operation of the EX engine ( - crankshaft 1171 -) there is a periodic torque fluctuation, and this torque fluctuation causes vibration 'n + noise 7°1. Factors that cause discomfort to the driver, such as yelling, etc.
1, so this 31 torque fluctuation is possible (J
It is desirable to suppress.

Conventionally, a device for suppressing this J, 4c torque fluctuation has been proposed in Japanese Unexamined Patent Application Publication No. 55-1/131 (1988), as shown in the crank shirt 1 - the permanently rotating permanent 1
A stone is used to connect the first IC bundle generating means and the second port 1 which is connected from the electromagnetic right side, which is provided in the non-rotating part corresponding to this.
By energizing the second lif & east generating means, the rotational torque generated on the crankshaft 1771 is applied to the crankshaft with a rotational torque of approximately opposite phase. There is a special outfit. In addition, the above publication proposes a means for changing the direction of application of magnetic torque to the crankshaft 1 shift depending on the acceleration state or deceleration state.

-1 The device described above is designed so that the 11 torque applied to the crankshaft 1-71 varies with the rotation of the first magnetic flux generating means using a permanent magnet, and the magnetic torque is controlled as desired. [・When you look/i-ru! ] Reverse 1 Herc Doyle/B 20th Entrance) Electric power is consumed by the bundle generation means, but from the standpoint of fuel efficiency, it is possible to reduce trL and consume energy, K < h. I want to do it, J Nijii. In this way, 4i=requirements have been satisfied, and when accelerating, the output is increased to improve the acceleration 1!1 ability! It is desirable that

(Invented in October) In view of these circumstances, the present invention has been developed based on Cranky's goose. It suppresses the i~lux fluctuations that occur in the throat, and only 1) Energy [1
The present invention provides an engine torque fluctuation control device that can reduce the engine speed by a small amount, improve its -1 acceleration performance, and increase its -1 acceleration performance.

(Structure of the Invention) The torque fluctuation control device of the present invention includes a power generation device driven by an engine and capable of applying a reverse 1.0 torque to a crankshaft 1771-, and an electric drive device capable of applying 1 torque to a crankshaft 1771-. , in synchronization with the 1-herk periodic fluctuation occurring in the crankshaft, the electric generator is activated when the torque increases, and the electric drive is activated when the torque decreases.
A control means 911 for controlling torque fluctuations in the engine, an acceleration detection means for detecting the acceleration state of the engine, and an output from the acceleration detection means to control the electric drive device when the acceleration state is reached. . 1. The positive torque given by λ is increased by lj
: It is equipped with a correction means. In other words, the i-ruta fluctuation caused by engine operation (to which J, the positive torque and the reverse torque J' are added to suppress this fluctuation,
-) The reverse I-lux is given by the electric power generation, and when it is in a state of acceleration, the electric drive is given J,
By increasing the applied torque, J: increases the output.

(Embodiment) FIGS. 1 to 3 show an embodiment of the structure of the power generation device and the electric drive device N provided in the torque fluctuation control device of the present invention. In this embodiment, the crankshaft 1 is 1. A power generating device (1) and a lightning drive device (1) are installed on the outer periphery of the cut flywheel (2) and the non-rotating part around it.
An electromagnetic m'l module is provided. 1/, a flywheel 2 is attached to the side end of the crank shirts 1 to 1 at A3 on the side of the cylinder block 3,
A clutch mechanism 4 is installed on the outside of the flywheel 2, and a clutch housing 5 is attached around the flywheel 2.
Is the bolt 1 member 6 attached to the cylinder block 3? ;I've been sent an IM.

In this part, the fixed side electromagnetic coil (hereinafter referred to as 'F[fixed-I
In addition, two types of rotating side electromagnetic coils (1 meter [referred to as rotating coil 1) 8 and 9 are installed on the outer peripheral surface of the flywheel 2.
0 is equipped with 3, and on the outer periphery of the crankshut 1 inside the flywheel 2, a flow 11 and a slip ring 12 are provided, and brushes 13 and 14 are in contact with each of them. . C1 and 15 are disc 1 vinyl 1-ta.

Fixed = I 7 is t - evening A alternator name Fixed side = 1
Iru's role [1, 1 tone, so wiring + M construction is roughly =
5- As shown in the diagram A'>J and FIG. And later details 1f
li'? IruJ: In the unit 21 control unit 20, the circuit connected to the fixed unit 7 is switched between electric drive and power generation.

In addition, the two scale rotating coils 8 and 9 installed on the outer periphery of the flywheel 2 serve as the armature core coil of the 1-tar and the field coil 11 of the A alternator. 8 is 1 as shown in Figure 1.
The second rotary armature core 9 is connected to the commutator 11 by a predetermined wiring structure to the same coil as the armature core of the motor, and the second rotation coil 9 is arranged in a meandering manner as shown in FIG. It is connected. These rotating coils 8, 9 are each energized by a control unit 20 at a predetermined time, as will be described in detail later. Then, the fixed coil 7 and the first rotation coil 8 are connected from the control unit 20 to the fixed coil 7 through the terminal a shown in FIG.
When energized, the stator side (receptacle part - 6 = inner circumference of shrine 6) and rotor side (outer circumference of fly wheel 2)
By being magnetized with a predetermined polarity, these serve as a motor and constitute an electric drive device 16 that applies iUh torque to the crankshaft 1.

1: Td-J: As shown in FIG. When connected to the rectifier circuit 30 in 1-.lux can be added.

Figure 8 shows the circuit structure of the torque change control device.
In this diagram, 21 is from star 1 to switch 21a and J.
:Including the ignition switch 21b #r "I'-
The switch 22 is a battery. As shown in this figure, the key switch 21 is connected to the key switch 21.
Connected to battery 22 via! , : the switching circuit 23, etc., and the first drive circuit 24 connected to this switching circuit 23.

1. and the second drive circuit 25, and each drive circuit 2/1.2.
Each of the timing control circuits 26, 27, 28, 29, 28, 29, etc. for electrical drive and power generation, respectively, controls the drive timing of 5, respectively, and a rectifier circuit 30. .

, L-ii [first drive circuit' I824 +, i, whatever the driving state f, the fixed 1 coil 7, the current adjustment circuit 28 and the first rotating coil 8 are connected in 18 series. The first drive circuit 24 of the octopus operates as shown in FIG. When in the driving state, 1^1 constant = 1 il 7 is connected to the battery 22 via the rectifier circuit 30,
J, sea urchin 4L: connected, where a charging circuit is formed. −
・h1 Second drive circuit 25 (in the driving state) The first rotating coil 8 is energized at the same time as 111 and 4i, and when the first drive circuit 24 is in the non-drive state and the second drive circuit 25 is driven State 4+: At the same time, the electrical connection equipment 17 shown in FIG. 7 is activated and the battery 22 is charged.

The above switching circuit 23 and timing control circuit 26.2
74; LCPU31km T control stt '+ CP
Crank angle detection from the crank angle sensor 32 and an intake 0 pressure detection signal from the negative pressure range 33 are input to U31. The first drive circuit 24 is connected to the battery 22 via the switching circuit 23 so as to function as a starter.

Also, after starting, the connection state of each drive circuit 24.25 and battery 22 is switched so that each drive circuit 24.25 operates according to the output of each timing control circuit 26.27, and the connection state of each drive circuit 24.25 and battery 22 is changed by CP tJ 31. Control circuit 26.
The drive timing of each drive circuit 24 and 25 is controlled via the drive circuit 27.

In this way, the CPU 31 and each timing control circuit 2
6.27, the electric drive 16
and controls the operation of the power generator 170 11′! A control means is constructed, and each of the above-mentioned devices 1
6.17 operation timing is controlled. In other words, for example, in a 4-cylinder 4-day engine, l:L, Fig. 9 (A)
As shown in , the torque generated by the crankshafts 1 to 1 is TIi'1 with a period of 1 F2O3 at the crank angle.
CP jJ 31 odor τ decreases as shown in Fig. 9 (
Shown in B) and (0)? 11 of the sea urchins and sea urchins generated
The operation timings of the power generation device 17 and the electric drive device 16 are set to correspond to 11 yen per person and the time of decrease (when reverse torque is generated).
sa3. J-i and operating period 0 +a.

Set Its by the crank angle. - and each timing control circuit 26, 27 and each drive circuit 24.
via 25, electric drive 16 d; and generator 17
Each of them operates at a set timing.

Furthermore, the above c P U 311ull, example Eva negative JT
t=L to the signal from 1f 33 (Then, the rate of change in the intake negative pressure is checked.) When the engine is in the acceleration state, the signal is shown by the broken line in Fig. 9 (C). t J, increase the amount of torque applied from the electric drive 16 to the crankshaft 1 by increasing the operating period θts of the electric drive 16 IJ", thus detecting acceleration - "stage i13, L and acceleration. A supplementary means is constructed.

If, other than acceleration 1.1 (21, electric drive system 116 and power generation 14 and 17 operating period 01 s, /) ta is set constant (> fine, but the engine speed and i load Since the torque fluctuation J7i is different from (intake 1'J JT ), V[movement interval θts of each of the above devices 16 and 17 is adjusted accordingly.

/71-a After setting the operation start timing Is and Da, the electric drive device '16
It is desirable to cover the operation period/71s by 1. Also, when the engine speed is relatively low, the IC explosion torque fluctuates due to the explosive force. 1;-), as shown by the solid line in Figure 10, the 1, ur'f, and 1. Due to /,: +Portion 1/Il・Luku increases-
By doing so, the negative 110 is shown by the broken line in the figure, and the crank angle is much higher than that at low rotation speeds! ') A 1-herk fluctuation occurs when the 00 it phase is shifted, and the relationship between the engine speed and the torque fluctuation product is shown.
With the same rotation speed r1 as the boundary, a shift in the III phase of the 1-distribution J: torque fluctuation occurs between the lower rotation side and the higher rotation side. For this reason, in the specific example of the 11 control shown in "1-Play 1-" later), the electric drive unit Fl 16 J3, J, and the operation timing of the power generation device 17 are changed to 10hi! rotation speed r1 to li'5. : There is sea urchin C.Furthermore, in the region l where the I222 rotational speed is extremely high, the demand for the torque fluctuation control 11 is insufficient and the control is difficult to perform in R11. Therefore, an upper limit rotational speed rg for torque fluctuation control is set, and this upper limit Introducing the rotation speed rQ;
Torque fluctuation control is performed within a range where the torque is not exceeded.

For this torque fluctuation control device. 1. A specific example of control is shown in the first example.
In Figure 2, 70-char 1 is explained next. The engine rotation speed R determined based on the cycle measurement of the crank angle, etc. is read, and in step S2, star 1 to switch 21E1 are turned on.
Find out whether or not. Start switch 2 'l a is ON
and/i is the engine rotation speed]R is the predetermined value R5IJ
, select the starting circuit and energize the coil 7 and the first rotation coil 8 until the switching circuit 2 reaches a completely melted state.
3 continuously drives the first drive circuit 24 via E! , an electric drive i1 using a fixed T1 coil 7 and a first rotating coil 8.
i! If the engine rotation speed R becomes greater than the predetermined value, the process moves to step S7. A3, when it is determined in step S2 that the star 1 to switch 21a are not turned on, the engine rotation speed R is set to the predetermined value R.
If the value is less than or equal to 2, the process moves to step S7 (step Ss).

Next, in step S7, it is checked whether or not the ignition switch 21b is turned on. If the ignition switch 21b is turned ON, the engine speed r and intake air negative pressure V are read (step S8), and then the engine speed r is changed to the 1-herc variation control setting value rg. Check whether F or not (step S
O). If the upper limit is set, the circuit for power generation is selected and the first rotation T1 is energized (step S10, 511), that is, the first drive circuit 24 is turned on. The second drive circuit 25 is set to the non-drive state and the second drive circuit 25 is set to the drive state fr.
, I'm going to work on power generation 4 and 17 depending on the child! Ru.

J, the engine speed is the upper limit setting value r of torque fluctuation control
(If it is 11s F, processing for torque fluctuation control is performed. This processing [, 1, Slap S9 is followed by engine rotation speed "゛ is the torque variation V mentioned above) + suspension is minimal". Check whether the rotation speed is less than 11 (Slap 512).
, When the rotation speed is in a low speed range of less than 11 (,■ Electric drive gln16J and each operation start time of the generator 17 O8
, Oa are the ship θS according to the torque fluctuation in the low speed range, respectively.
1. Oa1 should be set to step S13), and when the rotation speed is in a high speed range equal to or higher than r1 (or each operation start time θ
s and Oa.11 according to torque fluctuations in the high speed range.
Set r1θ82.0B2 (step 514). These values are stored in advance in a memory (not shown) in the form of a map corresponding to the operating state, and the values are read from this map in accordance with the actual operating state. Furthermore, step S15
In order to check the rate of change of the intake negative pressure V, it is determined whether the acceleration state is present or not, that is, acceleration 11. Since the intake negative pressure decreases in s, the direction of negative pressure decrease (pressure 1 direction)
The rate of change (d v/d t ) is constant (+fi (X
J: Find out if it's Rinjin or not. 1 - Opening degree (1
- When the rate (d v / (11: ) is set (IC1α or less), during steady operation, each operation 1111 of the power generation device and electric drive device is 0 (a, θts. '', and find these functions according to the intake negative pressure V!, : 1 straight 1'a (r, v), f
Set to s(r,v) (step S1a, S1
7).

In addition, -1-opening ratio (dv/dl:) is larger than the set uniformity α during acceleration (this means that the operating period Ota of the generator is set to the same set value fa (r, v ), and on the other hand, the operating period θIS of the electric drive device is set to the set value fs (r, v) during steady operation by 1 J, and the correction coefficient 1 is increased by 1. 31: Set S'b longer (step S18.519).

Next, in step L) 20, the crank angle θ is input.

Then, the crank angle θ is the operating start point Oa of the power generator ``117''.
When the condition is within the setting range from to the end of operation (/7a-+-/1ta), the timing control circuit 27
By driving the second drive circuit 25 through the
Rotation] Pass through file 9 (step = 15 = S21.522). Also, crank angle 0 is electric drive tool'F
If the condition is within the setting range from the operation start point 0S to the operation end point (O3+0tS) of f16, the first drive circuit 2/1 is driven via the timing control circuit 26. The fixed] coils 7 and J and the first rotating coil 8 are energized (steps S23 and 824).

When the crank angle O is not within each set range, return to step S7 and repeat the steps below '9. , this is determined in step S7, and the control movement ends.

By controlling according to the following F-1-B+--l-,
When the engine is in an operating state in which 1-herk variation control is to be performed (L1 power generation generator 17 and J: and the electric drive device 16 are operated at predetermined timings, the crankshaft The torque generated in 1st is 9th
4 as shown in Figure (Δ), each of the above-mentioned units b
Ti17. I6 is activated. Therefore, Figure 9 (one)
As shown in , when the generated torque = 16- increases, a reverse torque is applied from the power generating device 17, and when the generated torque becomes a reverse torque, the iT is applied from the electric drive device 1G.
E l ~ silk addition λ will be added, and these additions [
・The composite torque with one herk of torque generated is shown by a dashed line in FIG. 9(A), and the torque fluctuation is suppressed. -C, especially when reverse torque is applied, electricity is generated and energy is recovered, reducing energy loss for suppressing torque fluctuations.

Furthermore, during acceleration, the operating period θ[S of the electric drive device 16 is increased as shown by the broken line in FIG. 9(C). In this way, the 11 herks applied to the crankshaft 11 feet 1 increases, and as a result, the average value of the resultant torque is increased compared to that during steady operation, and in other words, the output is increased.

In addition, 1 Herc! As means for controlling and correcting d, the current adjustment circuits 28 and 29 may be controlled by the CPU 31 to control the current sent to the rotation wheels 8 and 9. In this case, during acceleration 1st rotation], the current sent to the coil 8 may be increased.

The shell of the electric drive device 16 and the power generation device 17 (1)
The structure is also limited to the above embodiment, for example, the crankshaft V7.
An electromagnetic coil constituting the device may be arranged between the rotating shaft connected to the rotary shaft through gears and the non-rotating part around it, and the electromagnetic coil constituting the device may also be installed in Using the same stark and alternator as the one described above, we will control the energization to it.
Alternatively, an electric drive unit 1613 and a power generator 17 for one-herc control may be installed separately from the starter and alternator.

(Effects of the Invention) As described above, the present invention synchronizes with the torque fluctuations occurring in the crankshaft and applies a reverse torque of J to operate the power generation device when the generated torque increases.

1.In order to increase the positive torque applied by the electric drive N, /III iI Il, '+ increases the positive torque applied by the electric drive N, so during steady operation the energy [1st is 94 It is possible to suppress torque fluctuations while reducing noise and discomfort, and increase output during acceleration to improve acceleration performance.

[Brief explanation of drawings]

Fig. 1 is a longitudinal sectional front view showing an embodiment of the structure of the power generation device and electric drive device according to the present invention, Fig. 2 is a longitudinal sectional side view thereof, and Fig. 3 is a schematic perspective view thereof. Figures 4 to 7 FXI
Figure 8 is a schematic diagram showing the wiring structure of the coils constituting the power generation device and the electric drive device, Figure 8 is a block diagram showing an example of the circuit configuration of the 1 Herc variation control device, Figure 9 (Δ), (
1'3), (C), and (D) are explanatory diagrams showing the relationship between the generated torque fluctuation, each operation timing of the power generation device and the electric drive device, and 1 addition and 1 herk. Characteristics of fluctuations in generated torque! Figure 1 and Figure 11 are explanatory diagrams showing the relationship between engine speed and torque variation lIIω, and Figure 12 is a diagram showing the control 70-buty-1. 16... Electric drive device, 17... Power generation device, 20.
...='n1~1~roll unit 124.25...drive circuit, 26.27...timing control circuit, 31.
...CP LJ. Figure 4: 4ml lacquer, lacquer, lacquer, etc.

Claims (1)

[Claims] 1. a power generator driven by the engine to provide a reverse torque to the crankshaft; an electric drive device to provide a positive torque to the crankshaft; a control means for torque fluctuation control which operates the electric drive device when the torque decreases; an acceleration detection means which detects the acceleration state of the engine; 1. A torque fluctuation control device for an engine, comprising: a correction means for increasing positive torque provided by a drive device.