CN104712444B - Engine control device - Google Patents
Engine control device Download PDFInfo
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- CN104712444B CN104712444B CN201410685708.5A CN201410685708A CN104712444B CN 104712444 B CN104712444 B CN 104712444B CN 201410685708 A CN201410685708 A CN 201410685708A CN 104712444 B CN104712444 B CN 104712444B
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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 control system.
Background technology
Following vehicles are practical, and the vehicle is waiting letter to realize the reduction of waste gas and the suppression of fuel consumption
During number grade, it is stipulated that engine stop condition when setting up, make engine automatic stop.If grasped in automatic stop condition
Make throttle, then the automatic restarting of electromotor.
In the vehicle of the automatic hold function for possessing electromotor, if the headlamp used in being automatically stopped of electromotor
Deng light fixture, then the charge capacity of battery may be drastically reduced.Have been presented for following technology (with reference to patent documentation 1)：If started
The automatic stop condition of machine is maintained more than the stipulated time, 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, motor scooter, moped, in order to lift week
Visibility of the vehicle for enclosing to which, preferably also lights headlamp and taillight in the parking of waiting signal etc..
Prior art literature
Patent documentation
Patent documentation 1：Japanese Unexamined Patent Publication 2004-108191 publications
The content of the invention
Invent problem to be solved
The battery of riding vehicle is less than the battery capacity of carriage, thus due to the light fixture used in engine stop,
Charge capacity is easily reduced.If in the state of charge capacity is reduced, having driven galvanic electricity to carry out the automatic restarting of electromotor
Motivation, then due to the reduction of cell voltage, the central processor (CPU) in engine control system may reset.In electricity
Cell voltage recover and during CPU restartings, in order to carry out appropriate electromotor control, sending out when the preferred replacement for judging CPU is produced
Motivation controlled state is automatic stop condition or non-automatic halted state.
By would indicate that the flag information that current engine control state is automatic stop condition is pre-stored within flash memory
Or in the nonvolatile memory such as EEPROM, so as to after CPU resets, it is also possible to read the information before resetting.
If however, the rewriting number of times of flag information is close to the upper limit of the rewritable number of times of nonvolatile memory, marked
The reliability of will information can be reduced.Further, if the number of times of rewriting of flag information exceedes the rewritable secondary of nonvolatile memory
Several upper limits, will be unable to be rewritten sometimes.
It is an object of the invention to provide a kind of engine control system, even if which is in the control unit of engine control system
When being reset because of the temporary transient reduction of cell voltage, it is also possible to the letter of the controlled state of the electromotor before keeping expression to reset
Breath.
Means for solving the problems
An a kind of viewpoint of the invention, there is provided engine control system, the electromotor of its control vehicle, has：
Hit decision circuit, which has the 1st capacitor；Holding circuit, which has the 2nd capacitor；And control unit, which is according to described
The voltage status of 1 capacitor and the 2nd capacitor control the electromotor, and the control unit turns the electromotor in satisfaction
During the condition of the controlled state for moving to regulation, the 2nd capacitor discharge is made.
After the control unit of engine control system carries out low-voltage reset restarting because of the temporary transient reduction of voltage,
By the charging and discharging state for detecting the 2nd capacitor, can determine that whether the controlled state of the electromotor before voltage reduction is rule
Fixed controlled state.
The controlled state of the regulation is the automatic stop condition of the electromotor, when the control unit is reset, inspection
The voltage of the voltage and the 2nd capacitor of the 1st capacitor is surveyed, is the 1st voltage threshold in the voltage of the 1st capacitor
Above and the 2nd capacitor voltage less than in the case of the 2nd voltage threshold, the electromotor can determine that for be it is described from
Dynamic halted state.
Msy be also constructed to, the hit decision circuit has the 1st resistor, the 1st resistor makes the 1st capacitor
Discharge and recharge is carried out with the 1st time constant, the holding circuit has the 2nd resistor, and the 2nd resistor makes the 2nd capacitor
Discharge and recharge is carried out with the 2nd more than 1st time constant time constant.
By detect the 1st capacitor voltage such that it is able to judge control unit reset reason be power supply hit or
The dump of longer time.As the 2nd time constant is more than the 1st time constant, thus the shape being electrically charged in the 2nd capacitor
In the case of the hit of power supply is there occurs under state, the charged state of the 2nd capacitor before hit generation is almost maintained to control
After the restarting in portion processed.Therefore, after control unit restarting, according to the charged state of the 2nd capacitor, can precision it is good
Ground judges that hit occurs the controlled state of the electromotor at moment.
The control unit is configured to the 1st voltage comparator circuit and the 2nd voltage comparator circuit.1st voltage ratio compared with
Circuit compares the voltage of the 1st capacitor and the 1st voltage threshold, exports comparative result.2nd voltage comparator circuit is more described
The voltage of the 2nd capacitor and the 2nd voltage threshold, export comparative result.Control unit can be more electric according to the 1st voltage ratio
Whether the output and the output of the 2nd voltage comparator circuit on road, judge the electromotor as the automatic stop condition.By
This, can mitigate the computational burden of control unit.
The effect of invention
After the hit that power supply occurs causes the control unit of engine control system to be reset, by detecting the 2nd electric capacity
The charging and discharging state of device, can determine that whether the controlled state of electromotor is the controlled state for specifying.
Description of the drawings
(A) of Fig. 1 is the block diagram and equivalent circuit diagram of the engine control system of embodiment, (D) of (B)～Fig. 1 of Fig. 1
It is the hit decision circuit and the equivalent circuit diagram of holding circuit of the engine control system of the variation of embodiment.
Fig. 2 is to illustrate supply voltage, the voltage of the 1st capacitor of hit decision circuit and the 2nd capacitor of holding circuit
The chart of of time change of voltage.
The flow chart of process when Fig. 3 is restarting after the control unit of the engine control system for illustrating embodiment resets.
(A) of Fig. 4 is to illustrate the voltage in the case of the hit that power supply is there occurs in the automatic stop condition of electromotor
There are the feelings of the hit of power supply when being and illustrating the state beyond electromotor is automatic stop condition in the chart of change, (B) of Fig. 4
The chart of the change in voltage under condition, (C) of Fig. 4 are to illustrate that control unit is generally risen when electromotor is automatic stop condition
The chart of change in voltage when dynamic, when (D) of Fig. 4 is to illustrate the state beyond electromotor is automatic stop condition, control unit
Carry out the chart of change in voltage when generally starting.
Symbol description
10 engine control systems
11 hit decision circuits
12 holding circuits
13 control units
13A, 13C input port
13B, 13D output port
14 power lines
20 triggers
21 electromotors
The 1st capacitors of C1
The 2nd capacitors of C2
The 1st voltage comparator circuits of D1
The 2nd voltage comparator circuits of D2
The 1st resistors of R1
The 2nd resistors of R2
The 3rd resistors of R3
The 4th resistors of R4
S1～S9 steps
The voltage of the 1st capacitors of V1
The voltage of the 2nd capacitors of V2
Vs supply voltages
The 1st voltage thresholds of Vt1
The 2nd voltage thresholds of Vt2
Specific embodiment
(A) of Fig. 1 illustrates the block diagram of the engine control system 10 of embodiment.Engine control system 10 has control unit
13rd, hit decision circuit 11, holding circuit 12.Control unit 13 for example uses central processor (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 with
Power line 14 connects, the 1st capacitor C1 ground connection.Interlinkage and control unit between 1st resistor R1 and the 1st capacitor C1
13 input port 13A connections.Therefore, the voltage V1 between the terminal of the 1st capacitor C1 is applied to input port 13A.1st is electric
Container C1 carries out discharge and recharge according to the 1st time constant via the 1st resistor R1.
Holding circuit 12 is made up of the series circuit of the 2nd capacitor C2 and the 2nd resistor R2.2nd resistor R2 and control
The output port 13B connections in portion 13, the 2nd capacitor C2 ground connection.Being connected with each other between the 2nd resistor R2 and the 2nd capacitor C2
Point is connected with the input port 13C of control unit 13.Therefore, the voltage V2 between the terminal of the 2nd capacitor C2 is applied to input
Mouth 13C.2nd capacitor C2 carries out discharge and recharge according to the 2nd time constant via the 2nd resistor R2.Control unit 13 makes output port
13B is high-voltage state (for example, supply voltage state) such that it is able to the 2nd capacitor C2 is charged, makes the output port 13B be
Low-voltage state (such as ground voltage state) such that it is able to make the 2nd capacitor C2 discharge.
It is equipped with the speed of the vehicle of engine control system 10, coolant water temperature, engine speed, is automatically stopped control choosing
The information for selecting switch etc. is imported in engine control system 10.Selecting switch is automatically stopped for selecting to make to send out for driver
The automatic hold function of motivation is effective or invalid.Engine control system 10 is according to current engine control state, control
Trigger 20 and electromotor 21.
The input impedance of input port 13A, 13C of control unit 13 is sufficiently above the 1st resistor R1's and the 2nd resistor R2
Resistance value, it is believed that be essentially infinitely great.
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 illustrated.In figure
2 epimere illustrates the time change of supply voltage Vs, the time change of the voltage V1 of the 1st capacitor C1 is illustrated in stage casing, under
Section illustrates the time change of the voltage V2 of the 2nd capacitor C2.
Switch on power till moment T0, supply voltage Vs is maintained at magnitude of voltage Vdd.Electricity is cut off in moment T0
Source, supply voltage Vs are reduced to 0V.In supply voltage Vs=Vdd, the 1st capacitor C1 is electrically charged, the voltage of the 1st capacitor C1
V1 is maintained at magnitude of voltage Vdd.The situation of magnitude of voltage Vdd is outputed in the output port 13B from control unit 13 ((A) of Fig. 1)
Under, as shown by the solid line, the voltage V2 of the 2nd capacitor C2 is maintained at magnitude of voltage Vdd.In the output port 13B from control unit 13
In the case of output ground voltage, shown in dotted line, the voltage V2 of the 2nd capacitor C2 is 0V.
In moment T0, when supply voltage Vs is reduced to 0V, the 1st capacitor C1 by the 1st resistor R1 ((A) of Fig. 1) with
1st time constant is discharged.1st time constant can pass through the capacitance of the 1st capacitor C1 and the resistance value of the 1st resistor R1
Product showing.For example, in moment Ts, the voltage V1 of the 1st capacitor C1 is reduced to the 1st voltage threshold Vt1.In moment T0, electricity
Source voltage Vs is reduced to 0V, in the case that before moment Ts, power supply recovers, is judged to generate the hit of power supply.And when
Carve in the case that power supply after Ts also fails to recover, due to being judged to beyond the hit, the disconnection of such as ignition switch and
So that supply voltage Vs is reduced to 0V.
Corresponding to the reduction of supply voltage Vs, the voltage of the output port 13B of control unit 13 is also 0V, thus the 2nd electric capacity
Device C2 is discharged with the 2nd time constant by the 2nd resistor R2.2nd time constant can pass through the capacitance of the 2nd capacitor C2
Show with the product of the resistance value of the 2nd resistor R2.In moment T0, the voltage V2 of the 2nd capacitor C2 is the situation of magnitude of voltage Vdd
Under, in moment Td, voltage V2 is reduced to the 2nd voltage threshold Vt2.In moment T0, in the case that voltage V2 is 0V, voltage V2 when
0V is also maintained to be after carving T0.
2nd time constant of holding circuit 12 is more than the 1st time constant of hit decision circuit 11.In the 1st voltage threshold
In the case of value Vt1 and the 2nd voltage threshold Vt2 identicals, in the case of such as Vt1=Vt2=Vdd/2, in moment Ts, the 2nd is electric
The voltage V2 of container C2 is higher than the 2nd voltage threshold Vt2.
The flow chart of the action of the control unit 13 when Fig. 3 illustrates that control unit 13 ((A) of Fig. 1) is reset.Opening because of igniting
When closing connections, the replacement of hit of power supply etc. and generation control unit 13, control unit 13 and carrying out restarting, in step sl, from defeated
Inbound port 13A reads in the voltage V1 of the 1st capacitor C1, and the voltage V2 of the 2nd capacitor C2 is read in from input port 13C.Will
The situation that control unit 13 is reset because supply voltage is reduced is referred to as " low-voltage reset ".
In step s 2, judge the voltage V1 of the 1st capacitor C1 whether in more than the 1st voltage threshold Vt1.It is low in voltage V1
In the case of the 1st voltage threshold Vt1, after the moment of reading voltage V1 means the moment Ts shown in Fig. 2.Therefore, sentencing
Be set to voltage V1 less than in the case of the 1st voltage threshold Vt1, in step s 6, be judged to and non-power hit, but due to
Common igniting is connected and control unit 13 is started.
In step s 2, it is judged to voltage V1 in the case of more than the 1st voltage threshold Vt1, in step s3, judges the
Whether the voltage V2 of 2 capacitor C2 is in more than the 2nd voltage threshold Vt2.Voltage V1 means in more than the 1st voltage threshold Vt1
In Fig. 2, in a period of from moment T0 to moment Ts, control unit 13 is started.I.e., it is believed that there occurs the hit of power supply.
In step s3, it is judged to voltage V2 in the case of more than the 2nd voltage threshold Vt2, in step s 4, by power supply
Controlled state during hit is judged to the state beyond the automatic stop condition of electromotor.The 2nd voltage threshold is less than in voltage V2
In the case of Vt2, in step s 5, controlled state during power supply hit is judged to the automatic stop condition of electromotor.
If the reason for determining control unit 13 by low-voltage reset in any one step of step S4～S6, in step
In rapid S7, judge whether the automatic stop condition of electromotor is set up.The judgement is according to the input of engine control system 10
Speed, coolant water temperature, engine speed, it is automatically stopped what state etc. of control selections switch was carried out.Automatic stop condition into
In the case of vertical, the 2nd capacitor C2 ((A) of Fig. 1) is made to discharge in step s 8.Specifically, output port 13B is made for ground connection
Voltage status.Therefore, as shown in phantom in Figure 2, states of the voltage V2 of the 2nd capacitor C2 for 0V.In automatic stop condition not
In the case of establishment, in step s 9, the 2nd capacitor C2 is charged.Specifically, make output port 13B for 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 magnitude of voltage Vdd's
State.
In the above-described embodiments, without using nonvolatile memory storing the controlled state of electromotor.Therefore, it is possible to
Avoid being close to the reduction of the higher limit of rewritable number of times and caused reliability due to the rewriting number of times of nonvolatile memory.Enter
And, without the need for the upkeep operation such as replacing of nonvolatile memory.
Voltage in the case that (A) of Fig. 4 illustrates the hit that power supply is there occurs in the automatic stop condition of electromotor becomes
Change.When electromotor is automatic stop condition, in step S8 (Fig. 3), the 2nd capacitor C2 electric discharges, thus voltage V2 is 0V.Such as
There is the hit of power supply in fruit, supply voltage Vs is reduced to 0V, then starts the electric discharge of the 1st capacitor C1 in moment T0.If power supply
Moment T1 before moment Ts (Fig. 2) recovers, then control unit 13 is restarted dynamic, and starts the charging of the 1st capacitor C1.
When control unit 13 is restarted dynamic, start the process shown in Fig. 3.Due to voltage V1 the 1st voltage threshold Vt1 with
On, voltage V2 is less than the 2nd voltage threshold Vt2, thus in step s 5, is judged to the wink of power supply in automatic stop condition
Disconnected, control unit 13 has carried out low-voltage reset.
(B) of Fig. 4 electromotor is shown for state beyond automatic stop condition when there occurs the hit of power supply in the case of
Change in voltage.As electromotor is the state beyond automatic stop condition, thus in step S9 (Fig. 3), to the 2nd capacitor
C2 charges.Therefore, the voltage V2 of the 2nd capacitor C2 is maintained at magnitude of voltage Vdd.
If the hit of power supply is there occurs in moment T0, supply voltage Vs is reduced to 0V, then start the 1st capacitor C1 and
The electric discharge of the 2nd capacitor C2.In the moment T1 of power up, the voltage V1 of the 1st capacitor C1 in more than the 1st voltage threshold Vt1,
The voltage V2 of the 2nd capacitor C2 is in more than the 2nd voltage threshold Vt2.Therefore, in step S4 (Fig. 3), it is judged to due to stopping automatically
The hit of power supply when only beyond state and cause control unit 13 carried out low-voltage reset.
2nd time constant of the electric discharge of the 2nd capacitor C2 more than the 1st time constant of the electric discharge of the 1st capacitor C1, because
And in moment T1, the 2nd capacitor C2 is maintained at high-voltage state more than 2nd voltage threshold Vt2.Therefore, it is possible to improve step
The reliability of the judgement of rapid S3 (Fig. 3).
(C) of Fig. 4 illustrate electromotor be automatic stop condition when, control unit 13 carry out generally start when change in voltage.
Wherein, " generally start " refers in the time for being used for the threshold value for determining whether hit that (Fig. 2's plays Ts from moment T0 and be
Time only) starting that the recovery of the power supply after power down state is realized is maintained in long time.As electromotor is certainly
Dynamic halted state, thus in the same manner as the situation of (A) of Fig. 4, the voltage V2 of the 2nd capacitor C2 is 0V.In moment T0, power supply electricity
Pressure 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.In supply voltage Vs
When reverting to magnitude of voltage Vdd, control unit 13 is started.In moment T2, the voltage V1 of the 1st capacitor C1 is less than the 1st voltage threshold
Vt1.Therefore, in step S6 (Fig. 3), it is judged to because common igniting is connected and so that control unit 13 is started.
Electricity when (D) of Fig. 4 illustrates the state beyond electromotor is automatic stop condition, when control unit 13 is generally started
Buckling.As electromotor is the state beyond automatic stop condition, thus in the same manner as the situation of (B) of Fig. 4, the 2nd electric capacity
The voltage V2 of device C2 is maintained at magnitude of voltage Vdd.If 0V is reduced in moment T0 supply voltage Vs, start the 1st capacitor
The electric discharge of C1 and the 2nd capacitor C2.In moment T2, the voltage V1 of the 1st capacitor C1 is less than the 1st voltage threshold Vt1.Therefore, with
The situation of (C) of Fig. 4 similarly, in step S6 (Fig. 3), is judged to cause control unit 13 because common igniting is connected
It is dynamic.
As shown in (D) of (C) and Fig. 4 of Fig. 4, in the usual starting connected and causing because of the igniting beyond the hit of power supply
In the case of, the magnitude of voltage of the voltage V2 regardless of the 2nd capacitor C2, in step S6 (Fig. 3), is all judged to because common
Igniting is connected and control unit 13 is started.
As described above, in embodiment, the voltage V1 of the 1st capacitor C1 by being contained in hit decision circuit 11,
Can recognize that it is, because of the hit of power supply and so that control unit 13 carries out low-voltage reset, or to make because common igniting is connected
Obtain control unit 13 to reset.In the case where the hit because of power supply causes control unit 13 to carry out low-voltage reset, by being contained in
The voltage V2 of the 2nd capacitor C2 in holding circuit 12, the controlled state of electromotor when can determine that hit occurs is automatic
Halted state state still in addition.
In the above-described embodiments, whether the automatic stop condition that electromotor is determined in step S7 (Fig. 3) is set up, and makees
For more usually way, it is also possible to judge to be transferred to other controlled state (the from current controlled state (the 1st controlled state)
2 controlled state) condition whether set up.Thus, during power up after the hit that there occurs power supply, can determine that generation electricity
The state during hit in source is the 1st controlled state or the 2nd controlled state.
For example, when the transition condition to the 2nd controlled state is set up, execution step S8, when not setting up, execution step
S9.In this case, in power up, if the voltage V2 of the 2nd capacitor C2 is judged in more than the 2nd voltage threshold Vt2
Be power supply hit occur the moment controlled state be the 1st controlled state.Conversely, when power supply recovers, if the 2nd capacitor
The voltage V2 of C2 is less than the 2nd voltage threshold Vt2, then can be determined that the controlled state for being occur in power supply hit the moment is the 2nd control
State processed.
After control unit 13 ((A) of Fig. 1) carries out low-voltage reset, control shape when there is the hit of power supply is can determine that
State, it is thus possible to according to controlled state, carry out most suitable electromotor control.For example, when control unit 13 is started, can omit just
Step inspection, ROM inspections, calculating of various control datas etc. are processed.Thereby, it is possible to carry out rapidly most suitable electromotor control.
As the controlled state of electromotor, in addition to automatic stop condition, study controlled state, electronics control can be enumerated
Air throttle (DBW) controlled state processed etc..In study controlled state, will be realized from the connection of ignition switch to electromotor control
The power on of device processed 10 rises, to the dump to engine control system 10 realized by the closing of ignition switch
During as 1 driving cycle, carry out the study of air throttle reference opening amount value, highland learning value etc..Occur in DBW controls
In the case of the hit of power supply, electromotor after the restarting of control unit 13 control optimization is enabled to.
Then, (D) of (B)～Fig. 1 of reference Fig. 1, illustrates the variation of embodiment.
In the variation shown in (B) in Fig. 1, the 1st resistor R1 of hit decision circuit 11 not (is schemed with power line 14
1 (A)) connection, but be connected with the output port 13D of control unit 13.In a period of power on, control unit 13 will output
The voltage of port 13D is set as magnitude of voltage Vdd.Therefore, carry out the same action of embodiment shown in (A) with Fig. 1.
In the variation shown in (C) in Fig. 1, the interlinkage between the 1st capacitor C1 and the 1st resistor R1 via
3rd resistor R3 is connected with input port 13A.Further, the interlinkage Jing between the 2nd capacitor C2 and the 2nd resistor R2
It is connected with input port 13C by the 4th resistor R4.
In the case where the power supply to the supply of engine control system 10 has been cut off, the input port 13A of control unit 13,
13C is down to earthing potential sometimes.The input impedance of input port 13A at this moment is equal to the 1st resistor R1 or less than the 1st
In the case of resistor R1, the time constant of the electric discharge of the 1st capacitor C1 can be subject to the shadow of the input impedance of input port 13A
Ring.3rd resistor R3 have maintain higher between the 1st capacitor C1 and the 1st resistor R1 interlinkage observation it is defeated
The function of actual effect input impedance during inbound port 13A.Similarly, the 4th resistor R4 has and is maintained from the 2nd capacitor C2 higher
With between the 2nd resistor R2 interlinkage observation input port 13C when actual effect input impedance function.
In addition, in the state of having cut off and being supplied to the power supply of engine control system 10, input port 13A, 13C are maintained
In the case of high impedance status, such as shown in (A) of Fig. 1, can be by the mutually interconnection between the 1st capacitor C1 and the 1st resistor R1
Contact is directly coupled to input port 13A.Likewise it is possible to by being connected with each other between the 2nd capacitor C2 and the 2nd resistor R2
Point is directly coupled to input port 13C.
In the variation shown in (D) in Fig. 1, the interlinkage between the 1st capacitor C1 and the 1st resistor R1 via
1st voltage comparator circuit D1 is connected with input port 13A.Similarly, it is mutual between the 2nd capacitor C2 and the 2nd resistor R2
Junction point is connected with input port 13C via the 2nd voltage comparator circuit D2.
The voltage being input into, i.e. the voltage V1 of the 1st capacitor C1 are entered by the 1st voltage comparator circuit D1 with the 1st reference voltage
Row compares, and comparative result is input to input port 13A.2nd voltage comparator circuit D2 is by the voltage being input into, i.e. the 2nd electric capacity
The voltage V2 of device C2 is compared with the 2nd reference voltage, and comparative result is input to input port 13C.1st voltage comparator circuit
D1 and the 2nd voltage comparator circuit D2 can be realized by operational amplifier or comparator etc..
In the embodiment shown in fig. 1, analogue signal is have input to input port 13A, 13C of control unit 13, and in Fig. 1
(D) shown in variation in, input port 13A, 13C supplied with digital signal to control unit 13.By the 1st voltage comparator circuit
1st reference voltage of D1 is set as the 1st voltage threshold Vt1 (Fig. 2), and the 2nd reference voltage of the 2nd voltage comparator circuit D2 is set
For the 2nd voltage threshold Vt2 (Fig. 2) such that it is able to realize the action same with the embodiment shown in Fig. 1.
In the variation of (D) of Fig. 1, the comparative result quilt of the voltage V1 and the 1st voltage threshold Vt1 of the 1st capacitor C1
Input port 13A is input to, the comparative result of the voltage V2 and the 2nd voltage threshold Vt2 of the 2nd capacitor C2 is imported into input
Mouth 13C.Therefore, there is no need to control unit 13 relatively to process using the voltage ratio that software is carried out.Thereby, it is possible to mitigate the fortune of control unit 13
Calculate burden.
The present invention is illustrated according to embodiment above, but the invention is not restricted to above content.For example, can carry out various
Change, improvement, combination etc., these are all self-explantory to those skilled in the art.
Claims (4)
1. a kind of engine control system, the electromotor of its control vehicle, have：
Hit decision circuit, which has the 1st capacitor；
Holding circuit, which has the 2nd capacitor；And
Control unit, which controls the electromotor according to the 1st capacitor and the voltage status of the 2nd capacitor,
The control unit makes the 2nd capacitor when the condition of the controlled state for making the electromotor be transferred to regulation is met
Electric discharge.
2. engine control system according to claim 1, wherein,
The controlled state of the regulation is the automatic stop condition of the electromotor,
The control unit during restarting, is more than the 1st voltage threshold in the voltage of the 1st capacitor after by low-voltage reset
And the voltage of the 2nd capacitor be judged to be carried out in the automatic stop condition less than in the case of the 2nd voltage threshold
Low-voltage reset.
3. engine control system according to claim 2, wherein,
The hit decision circuit has the 1st resistor, and the 1st resistor makes the 1st capacitor carry out with the 1st time constant
Discharge and recharge,
The holding circuit have the 2nd resistor, the 2nd resistor make the 2nd capacitor with the 1st time constant more than
The 2nd time constant carry out discharge and recharge.
4. the engine control system according to Claims 2 or 3, wherein,
The control unit has：
1st voltage comparator circuit, voltage and the 1st voltage threshold of its 1st capacitor export comparative result；
And
2nd voltage comparator circuit, voltage and the 2nd voltage threshold of its 2nd capacitor export comparative result,
Output and the output of 2nd voltage comparator circuit of the engine control system according to the 1st voltage comparator circuit,
Judge the electromotor whether as the automatic stop condition.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013-260077 | 2013-12-17 | ||
| JP2013260077A JP6282858B2 (en) | 2013-12-17 | 2013-12-17 | Engine control device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104712444A CN104712444A (en) | 2015-06-17 |
| CN104712444B true CN104712444B (en) | 2017-04-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410685708.5A Active CN104712444B (en) | 2013-12-17 | 2014-11-25 | Engine control device |
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| JP (1) | JP6282858B2 (en) |
| CN (1) | CN104712444B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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| JPH09247076A (en) * | 1996-03-05 | 1997-09-19 | Toshiba Corp | Radio communication machine provided with power hit detection function |
| JP5667810B2 (en) * | 2010-08-10 | 2015-02-12 | 新電元工業株式会社 | Control apparatus and control method |
| US9266520B2 (en) * | 2011-11-11 | 2016-02-23 | Ford Global Technologies, Llc | Dynamic tuning of engine auto stop criteria |
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| JPH0519911A (en) * | 1991-07-17 | 1993-01-29 | Hitachi Ltd | Power supply circuit |
| 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 |
|---|---|
| CN104712444A (en) | 2015-06-17 |
| JP6282858B2 (en) | 2018-02-21 |
| JP2015116863A (en) | 2015-06-25 |
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