CN104712444A - Engine control device - Google Patents
Engine control device Download PDFInfo
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- CN104712444A CN104712444A CN201410685708.5A CN201410685708A CN104712444A CN 104712444 A CN104712444 A CN 104712444A CN 201410685708 A CN201410685708 A CN 201410685708A CN 104712444 A CN104712444 A CN 104712444A
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Abstract
The invention provides an engine control device which can maintain information indicating the control state of an engine before reset even if a control part of the engine control device is reset due to temporarily-low battery voltage. The engine control device for controlling the engine of a vehicle comprises a transient interruption determination circuit which comprises a first capacitor, a holding circuit which comprises a second capacitor, and a control part which controls the engine according to the voltage state of the first capacitor and the second capacitor. The control part enables the second capacitor to discharge electricity when the engine is in a specified control state.
Description
Technical field
The present invention relates to engine controlling unit.
Background technique
Following vehicle is practical, and this vehicle, in order to the suppression of the minimizing and fuel consumption that realize waste gas, in the processes such as waiting signal, when the engine stop condition of regulation is set up, makes engine automatic stop.If operate throttle, the then automatic restarting of motor when automatic stop condition.
In the vehicle of automatic hold function possessing motor, if use the light fixtures such as Headlamps in the automatic stopping of motor, then the charge capacity of battery may sharply reduce.Propose following technology (with reference to patent documentation 1): if the automatic stop condition of motor maintains the stipulated time more than, then make the automatic dim light of light fixture or extinguishing.
On the other hand, in the riding vehicles such as automatic two-wheeled cycle, scooter, moped, in order to promote the visibility of vehicle to it of surrounding, preferably Headlamps and taillight is also made to light when the parking of waiting signal etc.
Prior art document
Patent documentation
Patent documentation 1: Japanese Unexamined Patent Publication 2004-108191 publication
Summary of the invention
Invent problem to be solved
The battery of riding vehicle is less than the battery capacity of four-wheel wagon, and thus owing to using light fixture in engine stop, charge capacity easily reduces.If under the state reduced at charge capacity, drive starting motor for carrying out the automatic restarting of motor, then due to the reduction of cell voltage, the central processing unit (CPU) in engine controlling unit may reset.In cell voltage recovery during CPU restarting, in order to carry out suitable engine control, preferably judge that the engine control state when replacement of CPU produces is automatic stop condition or non-automatic halted state.
Be pre-stored within the nonvolatile memory such as flash memory or EEPROM by the flag information being automatic stop condition by the current engine control state of expression, thus after CPU resets, also can read the information before replacement.
But if the rewriting number of times of flag information is close to the upper limit of the number of times rewritten of nonvolatile memory, then the reliability of flag information can reduce.And then, if the rewriting number of times of flag information exceedes the upper limit of the number of times rewritten of nonvolatile memory, sometimes cannot rewrite.
The object of the present invention is to provide a kind of engine controlling unit, even if it is when the control device of engine controlling unit is reset because of the temporary transient reduction of cell voltage, also can keep the information of the state of a control representing the motor before resetting.
For solving the means of problem
According to a viewpoint of the present invention, provide a kind of engine controlling unit, it controls the motor of vehicle, and have: hit decision circuit, it has the 1st capacitor; Holding circuit, it has the 2nd capacitor; And control device, it controls described motor according to the voltage status of described 1st capacitor and described 2nd capacitor, described control device meet make described motor be transferred to the condition of the state of a control of regulation time, make described 2nd capacitor discharge.
Carry out low-voltage reset because of the temporary transient reduction of voltage and after restarting at the control device of engine controlling unit, by detecting the charging and discharging state of the 2nd capacitor, can judge voltage reduce before the state of a control of motor whether as the state of a control of regulation.
The state of a control of described regulation is the automatic stop condition of described motor, when described control device is reset, detect the voltage of described 1st capacitor and the voltage of described 2nd capacitor, when the voltage of described 1st capacitor is more than the 1st Voltage threshold and the voltage of described 2nd capacitor is less than the 2nd Voltage threshold, described motor can be judged to be it is described automatic stop condition.
Can also be configured to, described hit decision circuit has the 1st resistor, 1st resistor makes described 1st capacitor carry out discharge and recharge with the 1st time constant, described holding circuit has the 2nd resistor, and the 2nd resistor makes described 2nd capacitor carry out discharge and recharge with the 2nd more than described 1st time constant time constant.
By detecting the voltage of the 1st capacitor, thus can judge that the reset reason of control device is hit or the supply disconnecton of longer time of power supply.Because the 2nd time constant is more than the 1st time constant, thus when the 2nd capacitor be there occurs the hit of power supply under the state of charging, after the charged state of the 2nd capacitor before hit occurs almost is maintained to the restarting of control device.Therefore, after control device restarting, according to the charged state of the 2nd capacitor, precision can judge that the state of a control of the motor in moment occurs hit well.
Described control device can be configured to have the 1st voltage comparator circuit and the 2nd voltage comparator circuit.1st voltage comparator circuit compares the voltage of the 1st capacitor and described 1st Voltage threshold, exports comparative result.The voltage of more described 2nd capacitor of the 2nd voltage comparator circuit and described 2nd Voltage threshold, export comparative result.Control device can according to the output of the output of described 1st voltage comparator circuit and described 2nd voltage comparator circuit, judges described motor whether as described automatic stop condition.Thereby, it is possible to alleviate the computational burden of control device.
The effect of invention
After the control device of engine controlling unit is reset, by detecting the charging and discharging state of the 2nd capacitor, can judge that the state of a control of motor is whether as the state of a control of regulation there is the hit of power supply.
Accompanying drawing explanation
(A) of Fig. 1 is block diagram and the equivalent circuit diagram of the engine controlling unit of embodiment, and (D) of (B) ~ Fig. 1 of Fig. 1 is the hit decision circuit of the engine controlling unit of the variation of embodiment and the equivalent circuit diagram of holding circuit.
Fig. 2 is the chart of an example of the time variations of the voltage of the voltage of the 1st capacitor that supply voltage, hit decision circuit are shown and the 2nd capacitor of holding circuit.
The flow chart of process when Fig. 3 is restarting after the control device of the engine controlling unit that embodiment is shown resets.
(A) of Fig. 4 is the chart of the voltage change hit that there occurs power supply in the automatic stop condition of motor is shown, (B) of Fig. 4 is the chart of the voltage change hit that power supply occurs when motor is the state beyond automatic stop condition is shown, (C) of Fig. 4 illustrates when motor is automatic stop condition, the chart of voltage change when control device starts usually, (D) of Fig. 4 illustrates when motor is the state beyond automatic stop condition, the chart of voltage change when control device starts usually.
Symbol description
10 engine controlling units
11 hit decision circuits
12 holding circuits
13 control devices
13A, 13C input port
13B, 13D output port
14 power lines
20 starters
21 motors
C1 the 1st capacitor
C2 the 2nd capacitor
D1 the 1st voltage comparator circuit
D2 the 2nd voltage comparator circuit
R1 the 1st resistor
R2 the 2nd resistor
R3 the 3rd resistor
R4 the 4th resistor
S1 ~ S9 step
The voltage of V1 the 1st capacitor
The voltage of V2 the 2nd capacitor
Vs supply voltage
Vt1 the 1st Voltage threshold
Vt2 the 2nd Voltage threshold
Embodiment
(A) of Fig. 1 illustrates the block diagram of the engine controlling unit 10 of embodiment.Engine controlling unit 10 has control device 13, hit decision circuit 11, holding circuit 12.Control device 13 such as uses central processing unit (CPU).
Hit decision circuit 11 is made up of the series circuit of the 1st capacitor C1 and the 1st resistor R1.1st resistor R1 is connected with power line 14, the 1st capacitor C1 ground connection.Interlinkage between 1st resistor R1 with the 1st capacitor C1 is connected with the input port 13A of control device 13.Therefore, the voltage V1 between the terminal of the 1st capacitor C1 is applied to input port 13A.1st capacitor C1 carries out discharge and recharge via the 1st resistor R1 according to the 1st time constant.
Holding circuit 12 is made up of the series circuit of the 2nd capacitor C2 and the 2nd resistor R2.2nd resistor R2 is connected with the output port 13B of control device 13, the 2nd capacitor C2 ground connection.Interlinkage between 2nd resistor R2 with the 2nd capacitor C2 is connected with the input port 13C of control device 13.Therefore, the voltage V2 between the terminal of the 2nd capacitor C2 is applied to input port 13C.2nd capacitor C2 carries out discharge and recharge via the 2nd resistor R2 according to the 2nd time constant.Control device 13 make output port 13B be high-voltage state (such as, supply voltage state), thus can charge to the 2nd capacitor C2, make output port 13B be low-voltage state (such as ground voltage state), thus the 2nd capacitor C2 can be made to discharge.
Carry the speed of a motor vehicle of the vehicle of engine controlling unit 10, coolant water temperature, engine speed, automatically stop the information controlling selector switch etc. to be imported in engine controlling unit 10.Automatic stopping selector switch being used for selecting to make the automatic hold function of motor effective or invalid for driver.Engine controlling unit 10, according to current engine control state, controls starter 20 and motor 21.
The input resistance of input port 13A, 13C of control device 13 is fully greater than the resistance value of the 1st resistor R1 and the 2nd resistor R2, can think and be essentially infinity.
With reference to Fig. 2, the action of hit decision circuit 11 ((A) of Fig. 1) and holding circuit 12 ((A) of Fig. 1) is described.The time variations of supply voltage Vs is shown at the epimere of Fig. 2, the time variations of the voltage V1 of the 1st capacitor C1 is shown in stage casing, the time variations of the voltage V2 of the 2nd capacitor C2 is shown at hypomere.
Switch on power until moment T0, supply voltage Vs is maintained at magnitude of voltage Vdd.Cut off the electricity supply when moment T0, supply voltage Vs is reduced to 0V.When supply voltage Vs=Vdd, the 1st capacitor C1 is charged, and the voltage V1 of the 1st capacitor C1 is maintained at magnitude of voltage Vdd.When outputing magnitude of voltage Vdd from the output port 13B of control device 13 ((A) of Fig. 1), as shown by the solid line, the voltage V2 of the 2nd capacitor C2 is maintained at magnitude of voltage Vdd.When exporting ground voltage from the output port 13B of control device 13, shown in dotted line, the voltage V2 of the 2nd capacitor C2 is 0V.
At moment T0, when supply voltage Vs is reduced to 0V, the 1st capacitor C1 is discharged with the 1st time constant by the 1st resistor R1 ((A) of Fig. 1).1st time constant shows by the Capacity of the 1st capacitor C1 and the amassing of resistance value of the 1st resistor R1.Such as, at moment Ts, the voltage V1 of the 1st capacitor C1 is reduced to the 1st Voltage threshold Vt1.At moment T0, supply voltage Vs is reduced to 0V, power supply recovers before moment Ts, is judged to be the hit creating power supply.And power supply also fails to recover after moment Ts, be judged to be the disconnection of the reason beyond due to hit, such as ignition switch and make supply voltage Vs be reduced to 0V.
Corresponding to the reduction of supply voltage Vs, the voltage of the output port 13B of control device 13 is also 0V, and thus the 2nd capacitor C2 is discharged with the 2nd time constant by the 2nd resistor R2.2nd time constant shows by the Capacity of the 2nd capacitor C2 and the amassing of resistance value of the 2nd resistor R2.At moment T0, when the voltage V2 of the 2nd capacitor C2 is magnitude of voltage Vdd, at moment Td, voltage V2 is reduced to the 2nd Voltage threshold Vt2.At moment T0, when voltage V2 is 0V, voltage V2 is also maintained 0V after moment T0.
2nd time constant of holding circuit 12 is more than the 1st time constant of hit decision circuit 11.When the 1st Voltage threshold Vt1 is identical with the 2nd Voltage threshold Vt2, such as Vt1=Vt2=Vdd/2 when, at moment Ts, the voltage V2 of the 2nd capacitor C2 is higher than the 2nd Voltage threshold Vt2.
The flow chart of the action of the control device 13 when Fig. 3 illustrates that control device 13 ((A) of Fig. 1) is reset.Connecting because of ignition switch, the hit of power supply etc. and there is the replacement of control device 13, control device 13 is when carrying out restarting, in step sl, read in the voltage V1 of the 1st capacitor C1 from input port 13A, and read in the voltage V2 of the 2nd capacitor C2 from input port 13C.The situation that control device 13 resets because supply voltage reduces is called " low-voltage reset ".
In step s 2, judge that whether the voltage V1 of the 1st capacitor C1 is at the 1st more than Voltage threshold Vt1.When voltage V1 is lower than the 1st Voltage threshold Vt1, after the moment of reading in voltage V1 means the moment Ts shown in Fig. 2.Therefore, when being judged to be voltage V1 lower than the 1st Voltage threshold Vt1, in step s 6, be judged to be and the hit of non-power, but connect due to common igniting and control device 13 is started.
In step s 2, be judged to be that voltage V1 is when the 1st more than Voltage threshold Vt1, in step s3, judge that whether the voltage V2 of the 2nd capacitor C2 is at the 2nd more than Voltage threshold Vt2.Voltage V1 means in fig. 2 at the 1st more than Voltage threshold Vt1, and in during from moment T0 to moment Ts, control device 13 is started.That is, the hit that there occurs power supply can be thought.
In step s3, be judged to be that voltage V2 is when the 2nd more than Voltage threshold Vt2, in step s 4 which, the state beyond automatic stop condition state of a control during power supply hit being judged to be motor.When voltage V2 is lower than the 2nd Voltage threshold Vt2, in step s 5, state of a control during power supply hit is judged to be the automatic stop condition of motor.
If determine control device 13 by the reason of low-voltage reset in any one step of step S4 ~ S6, then in the step s 7, judge whether the automatic stop condition of motor is set up.This judgement is according to the speed of a motor vehicle inputted engine controlling unit 10, coolant water temperature, engine speed, automatically stops the state etc. controlling selector switch to carry out.When automatic stop condition is set up, the 2nd capacitor C2 ((A) of Fig. 1) is made to discharge in step s 8.Specifically, output port 13B is made to be ground voltage state.Therefore, as shown in phantom in Figure 2, the voltage V2 of the 2nd capacitor C2 is the state of 0V.In the invalid situation of automatic stop condition, in step s 9, the 2nd capacitor C2 is charged.Specifically, output port 13B is made to be high-voltage state, such as supply voltage state.Therefore, as illustrated in solid line in figure 2, the voltage V2 of the 2nd capacitor C2 is maintained at the state of magnitude of voltage Vdd.
In the above-described embodiments, without the need to using nonvolatile memory to store the state of a control of motor.Therefore, it is possible to avoid because the rewriting number of times of nonvolatile memory is close to rewriting the CLV ceiling limit value of number of times and the reduction of reliability that causes.And then, without the need to the upkeep operation such as replacing of nonvolatile memory.
(A) of Fig. 4 illustrates voltage change when to there occurs the hit of power supply when the automatic stop condition of motor.When motor is automatic stop condition, in step S8 (Fig. 3), the 2nd capacitor C2 discharges, and thus voltage V2 is 0V.If there is the hit of power supply at moment T0, supply voltage Vs is reduced to 0V, then start the electric discharge of the 1st capacitor C1.If the moment T1 of power supply before moment Ts (Fig. 2) recovers, then control device 13 is by restarting, and starts the charging of the 1st capacitor C1.
When control device 13 is by restarting, start the process shown in Fig. 3.Because voltage V1 is at the 1st more than Voltage threshold Vt1, voltage V2 is lower than the 2nd Voltage threshold Vt2, and thus in step s 5, be judged to be the hit that power supply occurs when automatic stop condition, control device 13 has carried out low-voltage reset.
Voltage change when (B) of Fig. 4 illustrates that motor there occurs the hit of power supply when being state beyond automatic stop condition.Due to the state that motor is beyond automatic stop condition, thus in step S9 (Fig. 3), the 2nd capacitor C2 is charged.Therefore, the voltage V2 of the 2nd capacitor C2 is maintained at magnitude of voltage Vdd.
If there occurs the hit of power supply when moment T0, supply voltage Vs is reduced to 0V, then start the electric discharge of the 1st capacitor C1 and the 2nd capacitor C2.At the moment T1 of power up, the voltage V1 of the 1st capacitor C1 is at the 1st more than Voltage threshold Vt1, and the voltage V2 of the 2nd capacitor C2 is at the 2nd more than Voltage threshold Vt2.Therefore, in step S4 (Fig. 3), be judged to be due to beyond automatic stop condition time power supply hit and make control device 13 carry out low-voltage reset.
2nd time constant of the electric discharge of the 2nd capacitor C2 is more than the 1st time constant of the electric discharge of the 1st capacitor C1, and thus at moment T1, the 2nd capacitor C2 is maintained at the high-voltage state of the 2nd more than Voltage threshold Vt2.Therefore, it is possible to improve the reliability of the judgement of step S3 (Fig. 3).
When (C) of Fig. 4 illustrates that motor is automatic stop condition, voltage change when control device 13 starts usually.Wherein, " usually start " refer to than as determine whether hit threshold value time (Fig. 2 play Ts from moment T0 till time) maintain power down state in long time after the starting that realizes of the recovery of power supply.Because motor is automatic stop condition, thus in the same manner as the situation of (A) of Fig. 4, the voltage V2 of the 2nd capacitor C2 is 0V.At moment T0, supply voltage Vs is reduced to 0V, and when have passed through the moment T2 of moment Ts, supply voltage Vs reverts to magnitude of voltage Vdd.When supply voltage Vs reverts to magnitude of voltage Vdd, control device 13 is started.At moment T2, the voltage V1 of the 1st capacitor C1 is lower than the 1st Voltage threshold Vt1.Therefore, in step S6 (Fig. 3), be judged to be because common igniting is connected and control device 13 is started.
(D) of Fig. 4 illustrates when motor is the state beyond automatic stop condition, voltage change when control device 13 starts usually.Due to the state that motor is beyond automatic stop condition, thus in the same manner as the situation of (B) of Fig. 4, the voltage V2 of the 2nd capacitor C2 is maintained at magnitude of voltage Vdd.If be reduced to 0V at moment T0 supply voltage Vs, then start the electric discharge of the 1st capacitor C1 and the 2nd capacitor C2.At moment T2, the voltage V1 of the 1st capacitor C1 is lower than the 1st Voltage threshold Vt1.Therefore, in the same manner as the situation of (C) of Fig. 4, in step S6 (Fig. 3), be judged to be because common igniting is connected and control device 13 is started.
As shown in (C) of Fig. 4 and (D) of Fig. 4, when the usual starting caused because the igniting beyond the hit of power supply is connected, regardless of the magnitude of voltage of the voltage V2 of the 2nd capacitor C2, in step S6 (Fig. 3), be all judged to be because common igniting is connected and control device 13 is started.
As mentioned above, in an embodiment, by being contained in the voltage V1 of the 1st capacitor C1 in hit decision circuit 11, can identify is make control device 13 carry out low-voltage reset because of the hit of power supply, or because common igniting is connected, control device 13 is reset.When making control device 13 carry out low-voltage reset at the hit because of power supply, by being contained in the voltage V2 of the 2nd capacitor C2 in holding circuit 12, can judge that the state of a control of motor when hit occurs is automatic stop condition or state in addition.
In the above-described embodiments, whether the automatic stop condition that determined motor in step S7 (Fig. 3) is set up, and conduct way more usually, also can judge whether the condition being transferred to other state of a control (the 2nd state of a control) from current state of a control (the 1st state of a control) is set up.Thus, during power up after the hit that there occurs power supply, state when can judge the hit that power supply occurs is the 1st state of a control or the 2nd state of a control.
Such as, when setting up to the transition condition of the 2nd state of a control, performing step S8, when not setting up, performing step S9.In this case, when power up, if the voltage V2 of the 2nd capacitor C2 is at the 2nd more than Voltage threshold Vt2, be then judged to be that it is the 1st state of a control that the state of a control in moment occurs at power supply hit.Otherwise, when power supply recovers, if the voltage V2 of the 2nd capacitor C2 is lower than the 2nd Voltage threshold Vt2, then can be judged to be that it is the 2nd state of a control that the state of a control in moment occurs at power supply hit.
After control device 13 ((A) of Fig. 1) carries out low-voltage reset, the state of a control during hit that power supply occurs can be judged, thus according to state of a control, the suitableeest engine control can be carried out.Such as, when control device 13 starts, trial inspection can be omitted, the process such as ROM checks, the calculating of various control data.Thereby, it is possible to carry out the suitableeest engine control rapidly.
As the state of a control of motor, except automatic stop condition, study control state, electronic control throttle (DBW) state of a control etc. can be enumerated.In study control state, by realize from the connection of ignition switch to the power connection of engine controlling unit 10, to the closedown of ignition switch realize to during the supply disconnecton of engine controlling unit 10 as 1 driving cycle, carry out the study of closure reference opening amount value, highland learning value etc.When there occurs the hit of power supply during DBW controls, the engine control optimization after the restarting of control device 13 can be made.
Then, with reference to (D) of (B) ~ Fig. 1 of Fig. 1, the variation of embodiment is described.
In the variation shown in (B) of Fig. 1, the 1st resistor R1 of hit decision circuit 11 is not connected with power line 14 ((A) of Fig. 1), but is connected with the output port 13D of control device 13.During power connection, the voltage sets of output port 13D is magnitude of voltage Vdd by control device 13.Therefore, the action same with the embodiment shown in (A) of Fig. 1 is carried out.
In the variation shown in (C) of Fig. 1, the interlinkage between the 1st capacitor C1 with the 1st resistor R1 is connected with input port 13A via the 3rd resistor R3.And then the interlinkage between the 2nd capacitor C2 with the 2nd resistor R2 is connected with input port 13C via the 4th resistor R4.
When having cut off the power supply to engine controlling unit 10 supply, input port 13A, 13C of control device 13 have been down to earthing potential sometimes.The input resistance of input port 13A be at this moment equal to the 1st resistor R1 or lower than the 1st resistor R1 when, the time constant of the electric discharge of the 1st capacitor C1 can be subject to the impact of the input resistance of input port 13A.3rd resistor R3 has the function of the actual effect input resistance maintained higher when observing input port 13A from the interlinkage between the 1st capacitor C1 and the 1st resistor R1.Similarly, the 4th resistor R4 has the function of the actual effect input resistance maintained higher when observing input port 13C from the interlinkage between the 2nd capacitor C2 and the 2nd resistor R2.
In addition, under the state having cut off the power supply being supplied to engine controlling unit 10, when input port 13A, 13C maintain high impedance status, as shown in (A) of Fig. 1, the interlinkage between the 1st capacitor C1 and the 1st resistor R1 directly can be linked in input port 13A.Similarly, the interlinkage between the 2nd capacitor C2 and the 2nd resistor R2 directly can be linked in input port 13C.
In the variation shown in (D) of Fig. 1, the interlinkage between the 1st capacitor C1 with the 1st resistor R1 is connected with input port 13A via the 1st voltage comparator circuit D1.Similarly, the interlinkage between the 2nd capacitor C2 with the 2nd resistor R2 is connected with input port 13C via the 2nd voltage comparator circuit D2.
The voltage V1 of inputted voltage, i.e. the 1st capacitor C1 and the 1st reference voltage compare by the 1st voltage comparator circuit D1, comparative result are input to input port 13A.The voltage V2 of inputted voltage, i.e. the 2nd capacitor C2 and the 2nd reference voltage compare by the 2nd voltage comparator circuit D2, comparative result are input to input port 13C.1st voltage comparator circuit D1 and the 2nd voltage comparator circuit D2 can pass through the realization such as operational amplifier or comparator.
In the embodiment shown in fig. 1, input port 13A, 13C to control device 13 have input analogue signal, and in the variation shown in (D) of Fig. 1, to input port 13A, 13C supplied with digital signal of control device 13.1st reference voltage of the 1st voltage comparator circuit D1 is set as the 1st Voltage threshold Vt1 (Fig. 2), 2nd reference voltage of the 2nd voltage comparator circuit D2 is set as the 2nd Voltage threshold Vt2 (Fig. 2), thus the action same with the embodiment shown in Fig. 1 can be realized.
In the variation of (D) of Fig. 1, the voltage V1 of the 1st capacitor C1 and the comparative result of the 1st Voltage threshold Vt1 are imported into input port 13A, and the voltage V2 of the 2nd capacitor C2 and the comparative result of the 2nd Voltage threshold Vt2 are imported into input port 13C.Therefore, the voltage compare process that control device 13 uses software to carry out is not needed.Thereby, it is possible to alleviate the computational burden of control device 13.
Describe the present invention according to embodiment above, but the invention is not restricted to above content.Such as, can carry out various change, improvement, combination etc., these are all self-explantory to those skilled in the art.
Claims (4)
1. an engine controlling unit, it controls the motor of vehicle, has:
Hit decision circuit, it has the 1st capacitor;
Holding circuit, it has the 2nd capacitor; And
Control device, it, according to the voltage status of described 1st capacitor and described 2nd capacitor, controls described motor,
Described control device meet make described motor be transferred to the condition of the state of a control of regulation time, make described 2nd capacitor discharge.
2. engine controlling unit according to claim 1, wherein,
The state of a control of described regulation is the automatic stop condition of described motor,
Described control device is after by low-voltage reset during restarting, when the voltage of described 1st capacitor is more than the 1st Voltage threshold and the voltage of described 2nd capacitor is less than the 2nd Voltage threshold, be judged to be it is carried out low-voltage reset when described automatic stop condition.
3. engine controlling unit according to claim 2, wherein,
Described hit decision circuit has the 1st resistor, and the 1st resistor makes described 1st capacitor carry out discharge and recharge with the 1st time constant,
Described holding circuit has the 2nd resistor, and the 2nd resistor makes described 2nd capacitor carry out discharge and recharge with the 2nd more than described 1st time constant time constant.
4. the engine controlling unit according to Claims 2 or 3, wherein,
Described control device has:
1st voltage comparator circuit, the voltage of its more described 1st capacitor and described 1st Voltage threshold, export comparative result; And
2nd voltage comparator circuit, the voltage of its more described 2nd capacitor and described 2nd Voltage threshold, export comparative result,
This engine controlling unit, according to the output of the output of described 1st voltage comparator circuit and described 2nd voltage comparator circuit, judges described motor whether as described automatic stop condition.
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| JP2013260077A JP6282858B2 (en) | 2013-12-17 | 2013-12-17 | Engine control device |
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| JP6254460B2 (en) * | 2014-02-28 | 2017-12-27 | 株式会社ケーヒン | Engine control device |
| JP6530597B2 (en) * | 2014-11-25 | 2019-06-12 | 株式会社ケーヒン | Engine control unit |
| JP6677215B2 (en) * | 2017-04-27 | 2020-04-08 | 株式会社デンソー | Rotary electric machine control device |
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| JP2007075633A (en) * | 2006-11-08 | 2007-03-29 | Kpe Inc | Power source cutoff device and method |
| CN101545407A (en) * | 2008-03-28 | 2009-09-30 | 马自达汽车株式会社 | Control method for internal combustion engine system, and internal combustion engine system |
| JP2011146985A (en) * | 2010-01-15 | 2011-07-28 | Furukawa Battery Co Ltd:The | Voltage detection circuit and power unit |
| CN201846502U (en) * | 2010-08-30 | 2011-05-25 | 黎焕欣 | Automatic electrical control device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2015116863A (en) | 2015-06-25 |
| JP6282858B2 (en) | 2018-02-21 |
| CN104712444B (en) | 2017-04-12 |
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Effective date of registration: 20211229 Address after: Ibaraki Patentee after: Hitachi astemo Co.,Ltd. Address before: Tokyo, Japan Patentee before: KEIHIN Corp. |