CN102046957A - Engine controller - Google Patents
Engine controller Download PDFInfo
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- CN102046957A CN102046957A CN2008801295775A CN200880129577A CN102046957A CN 102046957 A CN102046957 A CN 102046957A CN 2008801295775 A CN2008801295775 A CN 2008801295775A CN 200880129577 A CN200880129577 A CN 200880129577A CN 102046957 A CN102046957 A CN 102046957A
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- Prior art keywords
- control unit
- battery
- voltage value
- battery voltage
- stepping motor
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/30—Controlling fuel injection
- F02D41/3082—Control of electrical fuel pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/04—Introducing corrections for particular operating conditions
- F02D41/06—Introducing corrections for particular operating conditions for engine starting or warming up
- F02D41/062—Introducing corrections for particular operating conditions for engine starting or warming up for starting
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
- F02M37/04—Feeding by means of driven pumps
- F02M37/08—Feeding by means of driven pumps electrically driven
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2200/00—Input parameters for engine control
- F02D2200/02—Input parameters for engine control the parameters being related to the engine
- F02D2200/04—Engine intake system parameters
- F02D2200/0406—Intake manifold pressure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2200/00—Input parameters for engine control
- F02D2200/50—Input parameters for engine control said parameters being related to the vehicle or its components
- F02D2200/503—Battery correction, i.e. corrections as a function of the state of the battery, its output or its type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2250/00—Engine control related to specific problems or objectives
- F02D2250/02—Fuel evaporation in fuel rails, e.g. in common rails
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/30—Controlling fuel injection
- F02D41/32—Controlling fuel injection of the low pressure type
- F02D41/34—Controlling fuel injection of the low pressure type with means for controlling injection timing or duration
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
- F02D9/08—Throttle valves specially adapted therefor; Arrangements of such valves in conduits
- F02D9/10—Throttle valves specially adapted therefor; Arrangements of such valves in conduits having pivotally-mounted flaps
- F02D9/1035—Details of the valve housing
- F02D9/105—Details of the valve housing having a throttle position sensor
Abstract
An engine controller is provided with a stepping motor being a power source of a fuel pump sucking and discharging fuel from a fuel tank and a control unit controlling a fuel discharge amount by controlling pulse width modulation of applied voltage to the stepping motor, which is decided by a driving pulse rate. The control unit corrects a target driving pulse rate based on a battery voltage value of a battery, operates the driving pulse rate so that the driving pulse rate comes close to the corrected target driving pulse rate and corrects a pulse width modulation control duty ratio of pulse applying time of applied voltage based on the battery voltage value of the battery.
Description
Technical field
The present invention relates to engine control, especially the control of the stepping motor of petrolift carried out the engine controlling unit of improved vehicle etc.
Background technique
In the past, use electromagnetic type relay to being used for that the petrolift that fuel is discharged from the fuel tank of vehicle is carried out drive electric motor, the on/off of the energising by switching electromagnetic type relay is controlled.So-called electromagnetic type relay is formed with the switch that utilizes this electromagnetic effect to make the contact mechanically be connected, disconnect by the magnet that can produce electromagnetic effect.
Though utilize petrolift with fuel from the fuel tank pressurized delivered to the pressure fuel pipeline, utilize sparger that fuel is injected in the cylinder, yet, if because of the heat that absorbs from peripheral component such as motor or fuel pump motors rises fuel temperature, then cause fuel in the pressure fuel pipeline, to gasify easily and produce bubble (steam).
Under the situation that has produced steam, can't pressurize to fuel, combustion is pressed and to be become unstable, also becomes unstable from the emitted dose of sparger.In order to prevent to produce steam, be purpose with the current sinking that suppresses the fuel pump motor, for example, when fuel sprays the less idle running of demand, the dutycycle of fuel pump motor suppresses, to try hard to reduce current sinking (for example, with reference to patent documentation 1).
In addition, under the situation of the petrolift of dillies such as small-sized two-wheel car,, thereby need make driving fuel pump motor compactness because of the relation of vehicle layout requires further to reduce the shape of petrolift.
Patent documentation 1: the Japan Patent spy opens the 2000-220548 communique
Summary of the invention
Yet the rotating speed of petrolift and discharge capacity are determined by the torque of motor.Because the torque of this motor is determined by the voltage that puts on motor, therefore, the reduction of voltage or because of the deterioration of battery etc. causes putting under the lower situation of the voltage of motor because of engine start the time, the torque that motor may take place is not enough, be forced into the situation of the time lengthening that the combustion that needs presses.Make the combustion pressure drop low if pressurization is not enough, then may cause the commodity of vehicles such as startability deterioration, acceleration deterioration significantly to reduce because of the fuel that can't spray needed amount.In addition, be higher than at the voltage that puts on motor under the situation of required voltage, exist current sinking increase to cause the motor self-heating, thereby be easy to generate the problem of steam because of motor.
The present invention is used to address the above problem, its purpose is, obtain a kind of engine controlling unit, this engine controlling unit can realize improving the startability of motor by guarantee the startability of motor when cell voltage is unusual, realizes suppressing the generation of steam by the current sinking that reduces motor when the regular event.
Engine controlling unit involved in the present invention is provided with stepping motor and control unit, described stepping motor is as sucking from fuel tank, discharge the power source of the petrolift of fuel, described control unit is to being determined by the driving pulse frequency, the voltage that puts on described stepping motor carries out pulse width modulation controlled, thereby the fuel discharge capacity is controlled, described control unit is based on the battery voltage value of battery, the target drives pulse frequency is revised, and described driving pulse frequency calculated, the target drives pulse frequency that it is revised near this process, and, the described pulse width modulation controlled dutycycle that applies the pulse application time of voltage is revised based on the battery voltage value of described battery.
Engine controlling unit involved in the present invention plays following effect: promptly, can realize improving the startability of motor by when cell voltage is unusual, guaranteeing the startability of fuel pump motor, realize suppressing the generation of steam by the current sinking that reduces motor when the regular event, and the fuel pump motor does not use special circuit.
Description of drawings
Fig. 1 is the figure of the system architecture of the expression motor that comprises the related engine controlling unit of embodiments of the invention 1.
Fig. 2 is the figure of the relation of the stator of stepping motor of the related engine controlling unit of expression embodiments of the invention 1 and terminal.
Fig. 3 is the figure of the step mode of the driving pulse frequency in the stepping motor of the related engine controlling unit of expression embodiments of the invention 1.
Fig. 4 is the flow chart of drive controlling of the stepping motor of the related engine controlling unit of expression embodiments of the present invention 1.
Fig. 5 is the figure of the relation of the battery voltage value of the related engine controlling unit of expression embodiments of the invention 1 and driving pulse correction quantity of frequency.
Fig. 6 is the figure that battery voltage value and the PWM of the related engine controlling unit of expression embodiments of the invention 1 controls the relation of dutycycle reduction value.
Embodiment
Below embodiments of the invention 1 are described.
Embodiment 1
Referring to figs. 1 through Fig. 6 embodiments of the invention 1 related engine controlling unit is described.Fig. 1 is the figure of the system architecture of the expression motor that comprises the related engine controlling unit of embodiments of the invention 1.
In Fig. 1, program and mapping that control unit 1 will be used to control the action of whole motor are stored in storage (not shown).Control unit 1 is according to the information of following each sensor, suitable fuel injection time and fuel injection amount are calculated, export drive signal the sparger 24 of the injection apparatus that acts as a fuel to, described sensor comprises: the intake air temperature sensor 3 that is arranged at air inlet side air-strainer 2, the temperature of engine charge is measured; The throttle valve position sensor 6 that is arranged at suction tude 4, the aperture of throttle valve 5 is measured; The air inlet pressure sensor 7 that the suction pressure in throttle valve 5 downstreams is measured; The engine temperature sensing unit 9 that the wall surface temperature of motor 8 is measured; And the crank angle sensor 11 that the position of crank 10 is measured.
In addition, the exhaust side of motor 8 (left side among Fig. 1) is combined with outlet pipe 12 and silencing apparatus 13.
In addition, similarly, control unit 1 in due course according to the information of various sensors to spark coil 14 output fire signals, produce sparks and make fuel in the engine cylinder and the mixed gas burning of air inlet by spark plug 15, the piston of motor 8 is pushed out, thereby makes bent axle 10 rotations.
By motor 22 from the drive petrolift 21 of control unit 1, suck or discharge fuel from fuel tank 20 via filter to fuel tank 20, described fuel is spurted into motor 8.The fuel that is discharged from is adjusted into predetermined pressure, offers sparger 24 by pressure fuel pipeline 23.
In embodiments of the invention 1, use the motor 22 of stepping motor as driving fuel pump 21.
Control unit 1 detects battery voltage value from the battery 25 that is loaded on the vehicle, uses it for the target drives pulse frequency and PWM (pulsewidth modulation) the control dutycycle of the stepping motor 22 of revising aftermentioned petrolift 21.
Fig. 2 is the figure of the relation of the stator of stepping motor of the related engine controlling unit of expression embodiments of the invention 1 and terminal.90 ° of the phase shifting electrical angles of terminal T1, T3 and terminal T4, T6, by successively separately mutually in switch energising, stepping motor 22 can rotate a stepping angle at every turn.Terminal T2, T5 are connected to battery 25.
Fig. 3 is the figure of the step mode of the driving pulse frequency in the related stepping motor of expression embodiments of the invention 1.No matter, all there is certain two-phase to be in the two-phase synchronizing "on" position of energising all the time in which moment.Shown in schematically, be equivalent to driving pulse after PWM control and be applied in the pulse application time (being equivalent to pulse application time shown in Figure 3) of the unit time of stepping motor 22 and be divided into first-half period (during first) and (during second) two stages between latter half.And, recently the current value during each is controlled by setting PWM control duty respectively.Here, the pulse application time is divided into two stages, but also can be divided into during above a plurality of in three intervals, in this case, can realize more refined control.
Then, describe with reference to the drive controlling of accompanying drawing the related stepping motor of embodiments of the invention 1.Fig. 4 is the flow chart of drive controlling of the stepping motor of the related engine controlling unit of expression embodiments of the present invention 1.
At first, in step 100, control unit 1 reads from various signal of sensor such as the intake air temperature sensor 3 that is connected in control unit 1, throttle valve position sensor 6, air inlet pressure sensor 7, engine temperature sensing unit 9 and crank angle sensors 11.In addition, control unit 1 reads the battery voltage value Vb of battery 25.
Then, in step 101, control unit 1 goes out the state of vehicle from various sensor, and the needed fuel injection amount of vehicle is calculated.For example, utilize the detected throttle valve position of throttle valve position sensor 6 according to description and, fuel injection amount is calculated based on the mapping of the relation between the engine speed that testing signal calculated of crank angle sensor 11.
Then, in step 102, control unit 1 decides the fuel quantity of petrolift 21 discharges according to the fuel injection amount that is calculated in previous step 101.Because the fuel quantity of this discharge changes according to the driving pulse frequency of the stepping motor 22 of driving fuel pump 21, therefore, the target drives pulse frequency of stepping motor 22 is determined by fuel injection amount.For example, according to the mapping of describing the relation between fuel injection amount and the engine speed, the target drives pulse frequency is calculated.Under the more situation of fuel injection amount, thereby in order to drive the fuel discharge capacity that stepping motor 22 increases from petrolift 21 with high rotating speed, control unit 1 is set at high frequency with the target drives pulse frequency.On the contrary, under the less situation of fuel injection amounts such as idle running, for the fuel discharge capacity of corresponding minimizing from petrolift 21, control unit 1 is set at low frequency with the target drives pulse frequency.
Then, in step 103, control unit 1 is revised the target drives pulse frequency that is determined in previous step 102 according to battery voltage value Vb.Under the lower situation of battery voltage value Vb, because the voltage that stepping motor 22 is applied is also lower, and also decline to some extent of motor torque, therefore, stepping motor 22 becomes and lacks of proper care easily.Since under driving pulse frequency condition with higher, the motor torque step-down, and therefore, can become is subjected to the influence that cell voltage reduces especially easily, thereby more may cause imbalance.Therefore, control unit 1 is according to the battery voltage value of Fig. 5 and the relation between the driving pulse correction quantity of frequency, promptly describe the mapping of the relation between battery voltage value and the driving pulse correction quantity of frequency, under the lower situation of battery voltage value, for example, under normal magnitude of voltage is situation about 14V, when voltage is reduced to 12V, must be lower with the correction of target drives pulse frequency.Particularly, if with reference to Fig. 5, then when battery voltage value was 12V, pairing driving pulse correction quantity of frequency was 0.8.Therefore, target drives pulse frequency and reduction value 0.8 are multiplied each other.That is, even be set at the target drives pulse frequency that under the lower situation of battery voltage value, also can guarantee torque.
On the contrary, under the battery voltage value condition with higher, control unit 1 determines higher reduction value as shown in Figure 5, thereby sets the target drives pulse frequency higher.For example, under normal magnitude of voltage is situation about 14V, when voltage rises to 16V, get the correction of target drives pulse frequency higher.Particularly, if with reference to Fig. 5, then when battery voltage value was 16V, pairing driving pulse correction quantity of frequency was 1.3.Therefore, target drives pulse frequency and reduction value 1.3 are multiplied each other.By like this,, also can suppress current sinking, thereby suppress the heating of stepping motor 22 by shortening application time even under the situation that the voltage that puts on stepping motor 22 uprises.In addition, because the scope of the driving pulse frequency that can set is determined that by the kind of employed stepping motor 22 therefore, revised target drives pulse frequency is limited in this scope.
Then, in step 104,1 pair of current current driving pulse frequency that sets of control unit compares with the target drives pulse frequency that is corrected in step 103, is lower than under the situation of target drives pulse frequency ("Yes") in current driving pulse frequency, enters step 105.On the contrary, under the situation of current driving pulse frequency, enter step 106 more than or equal to target drives pulse frequency ("No").
Then, in step 105,1 of control unit adds the amount that is equivalent to the minimum resolution degree on current driving pulse frequency, so that it is near the target drives pulse frequency.
On the other hand, in step 106, control unit 1 is implemented the comparison opposite with step 104, is higher than under the situation of target drives pulse frequency ("Yes") in current driving pulse frequency, enters step 107.Comparative result in step 106 is under the situation of ("No") of being false, and it is consistent with the target drives pulse frequency to be judged as current driving pulse frequency, enters step 108 and current driving pulse frequency do not changed.
Then, in step 107,1 of control unit deducts the amount that is equivalent to the minimum resolution degree on current driving pulse frequency, so that it is near the target drives pulse frequency.
Because a succession of action from step 104 to step 107 can not make current driving pulse frequency generation rapid change, can prevent that therefore stepping motor 22 from lacking of proper care.Yet, because performance according to stepping motor 22, even can consider that significantly switching current driving pulse frequency can not lack of proper care yet, therefore, do not need variation limitation with the current driving pulse frequency of stepping motor 105 and step 107 in the minimum resolution degree.
In step 108, control unit 1 is according to the current driving pulse frequency that is calculated in step 105 and step 107, decides the pulse application time that puts on stepping motor 22 is divided the PWM control dutycycle of back during each.For example, according to describing current driving pulse frequency and mapping, come that PWM is controlled dutycycle and calculate by the relation between the detected engine temperature of engine temperature sensing unit 9.Under current driving pulse frequency condition with higher, because it is shorter stepping motor 22 to be applied the time of pulse, so current sinking is less, under the lower situation of current driving pulse frequency, because it is elongated stepping motor 22 to be applied the time of pulse, so current sinking becomes big.Here, by control PWM control dutycycle,, also can recently reduce current sinking by improving duty even current driving pulse frequency is lower.In embodiments of the invention 1, suppose to each be divided during PWM control dutycycle determine, but the dutycycle of whole pulse application time is changed uniformly.
Then, identical with step 103 in step 109, control unit 1 is revised PWM control dutycycle according to battery voltage value.Under the lower situation of battery voltage value, as described in the step 103, reduce, so PWM control dutycycle improves and current value reduces, and can cause motor torque to descend, and may cause imbalance owing to put on the voltage of stepping motor 22.Therefore, control unit 1 is according to the relation between the battery voltage value of Fig. 6 and the PWM control dutycycle reduction value, promptly describe the mapping that battery voltage value and PWM control the relation between the dutycycle reduction value, under the lower situation of battery voltage value, for example, under normal magnitude of voltage is situation about 14V, when voltage is reduced to 10V, PWM is controlled the dutycycle correction get higher.Particularly, if with reference to Fig. 6, then when battery voltage value was 10V, pairing PWM control dutycycle reduction value was 1.5.Therefore, PWM is controlled dutycycle and reduction value 1.5 multiplies each other.Consequently, can improve the voltage that puts on stepping motor 22, thereby torque is increased.
On the contrary, under the battery voltage value condition with higher, control unit 1 is controlled the dutycycle correction for the heating that prevents stepping motor 22 with PWM must be lower, to reduce current sinking.For example, under normal magnitude of voltage was situation about 14V, when voltage rose to 16V, PWM is controlled the dutycycle correction must be lower.Particularly, if with reference to Fig. 6, then when battery voltage value was 16V, pairing PWM control dutycycle reduction value was 0.7.Therefore, PWM is controlled dutycycle and reduction value 0.7 multiplies each other.In addition, owing to the kind according to employed stepping motor 22, the scope of the PWM that can set control dutycycle is restricted, and therefore limits and handles so that revised PWM control dutycycle is within the scope.In addition, can only revise PWM control dutycycle, also can only revise PWM control dutycycle (during second) between latter half at the first-half period (during first) of pulse application time.
Then, in step 110, under battery voltage value showed situation above the abnormal voltage of specified value, the voltage that puts on stepping motor 22 became very high.So, for example under battery voltage value surpasses the situation of 18V, separately unified reduction of PWM control dutycycle during each that is divided in that control unit 1 will be determined in step 108 and step 109, the pulse application time, for example, unified being set at reduces by 10%.Thus, reduce the current sinking of stepping motor 22, suppress the heating of stepping motor 22.
Then, in step 111, control unit 1 is according to described current driving pulse frequency and PWM control dutycycle, the stepping motor 22 of petrolift 21 provided apply voltage, and stepping motor 22 is driven.
Because embodiments of the invention 1 related engine controlling unit comprises stepping motor 22 and control unit 1, described stepping motor 22 is as sucking from fuel tank 20, discharge the power source of the petrolift 21 of fuel, 1 pair of described control unit is determined by the driving pulse frequency, the voltage that puts on stepping motor 22 carries out pulse width modulation controlled, thereby the fuel discharge capacity is controlled, control unit 1 is based on the battery voltage value of battery 25, the target drives pulse frequency is revised, described driving pulse frequency is calculated, the target drives pulse frequency that it is revised near this process, and battery voltage value based on battery 25, the described pulse width modulation controlled dutycycle that applies the pulse application time of voltage is revised, therefore, the startability of stepping motor 22 that can be by guaranteeing petrolift 21 when cell voltage is unusual realizes improving the startability of motor, realize suppressing the generation of steam by the current sinking that reduces stepping motor 22 when the regular event, and the stepping motor 22 of petrolift 21 does not use special circuit.
In addition, in the related engine controlling unit of embodiments of the invention 1, because control unit 1 has under the situation of tendency on the low side at the battery voltage value of battery 25, the driving pulse frequency that puts on stepping motor 22 is modified to low frequency, therefore, under the situation about reduce at cell voltage, the torque of stepping motor 22 reducing, thereby can provide electric current to stepping motor 22, guarantee the torque of stepping motor 22 by the driving pulse frequency is switched to low frequency.By guaranteeing torque, when reducing, cell voltage also can provide fuel by petrolift.
In addition, in the related engine controlling unit of embodiments of the invention 1, because control unit 1 has under the situation of higher tendency at the battery voltage value of battery 25, the driving pulse frequency that puts on stepping motor 22 is modified to high frequency, therefore, can shorten the voltage that puts on stepping motor 22, thereby reduce current sinking.By reducing current sinking, can successfully manage the situation of stepping motor 22 heatings.
In addition, in the related engine controlling unit of embodiments of the invention 1, control unit 1 is based on battery voltage value, in acting on the pulse application time of stepping motor 22, to be divided into a plurality of during in first during PWM control dutycycle revise.By the PWM during first control dutycycle is set with other during inequality, when beginning to drive the stepping motor 22 that has been applied in high load, also can guarantee bigger torque.
In addition, in the related engine controlling unit of embodiments of the invention 1, because control unit 1 is based on battery voltage value, in acting on the pulse application time of stepping motor 22, to be divided into a plurality of during in second during PWM control dutycycle revise, therefore, can guarantee during first that thereby torque makes stepping motor 22 rotations reliably, after during second torque is controlled, the inertia of the rotor of stepping motor 22 is not descended, thus can be by reducing the Joule heat that current sinking reduces motor winding.
In addition, in the related engine controlling unit of embodiments of the invention 1, control unit 1 has under the situation of tendency on the low side at the battery voltage value of battery 25, PWM is controlled the dutycycle correction get higher.Thus, can improve the voltage that puts on stepping motor 22, thereby guarantee that motor torque is to prevent imbalance.
In addition, in the related engine controlling unit of embodiments of the invention 1, control unit 1 has under the situation of higher tendency at the battery voltage value of battery 25, and PWM is controlled the dutycycle correction must be lower.Thus, can prevent to uprise because of applying voltage, current sinking increases and to cause stepping motor 22 heatings, can also suppress the generation of steam.
In addition, in the related engine controlling unit of embodiments of the invention 1, because control unit 1 surpasses under the situation of specified value at the battery voltage value of battery 25, the PWM control dutycycle that will be divided into during all in the pulse application time during a plurality of is switched lowlyer, therefore stepping motor 22 can not be applied in unusual high magnitude of voltage, thereby can prevent the increase of current sinking, the heating of stepping motor 22 and the generation of steam.In addition, because the heating deterioration of coil is suppressed, therefore can help to improve the reliability of fuel generator.
Claims (8)
1. an engine controlling unit is characterized in that, comprising:
Stepping motor as the power source of the petrolift that sucks, discharges fuel from fuel tank;
And the voltage that applies that is determined by the driving pulse frequency, put on described stepping motor carried out pulse width modulation controlled, thus the control unit that the fuel discharge capacity is controlled,
Described control unit is based on the battery voltage value of described battery, the target drives pulse frequency is revised, and described driving pulse frequency calculated, the target drives pulse frequency that it is revised near this process, and, the described pulse width modulation controlled dutycycle that applies the pulse application time of voltage is revised based on the battery voltage value of battery.
2. engine controlling unit as claimed in claim 1 is characterized in that,
Described control unit is lower than under the situation of normal value at the battery voltage value of described battery, and described driving pulse frequency is modified to low frequency.
3. engine controlling unit as claimed in claim 1 is characterized in that,
Described control unit is higher than under the situation of normal value at the battery voltage value of described battery, and described driving pulse frequency is modified to high frequency.
4. engine controlling unit as claimed in claim 1 is characterized in that,
Described control unit with described pulse application time be divided into a plurality of during, based on described battery voltage value to described a plurality of during in first during the pulse width modulation controlled dutycycle revise.
5. engine controlling unit as claimed in claim 1 is characterized in that,
Described control unit with described pulse application time be divided into a plurality of during, based on described battery voltage value to described a plurality of during in second during after during the pulse width modulation controlled dutycycle revise.
6. as claim 4 or 5 described engine controlling units, it is characterized in that,
Described control unit is lower than under the situation of normal value at the battery voltage value of described battery, gets the correction of described pulse width modulation controlled dutycycle higher.
7. as claim 4 or 5 described engine controlling units, it is characterized in that,
Described control unit is higher than under the situation of normal value at the battery voltage value of described battery, must be lower with the correction of described pulse width modulation controlled dutycycle.
8. engine controlling unit as claimed in claim 1 is characterized in that,
Described control unit is set the pulse width modulation controlled dutycycle in the described pulse application time lower under the battery voltage value of the described battery situation for the abnormal voltage that surpasses specified value.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2008/061030 WO2009153859A1 (en) | 2008-06-17 | 2008-06-17 | Engine controller |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102046957A true CN102046957A (en) | 2011-05-04 |
| CN102046957B CN102046957B (en) | 2013-03-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200880129577.5A Active CN102046957B (en) | 2008-06-17 | 2008-06-17 | Engine controller |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP5106632B2 (en) |
| CN (1) | CN102046957B (en) |
| TW (1) | TWI362474B (en) |
| WO (1) | WO2009153859A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109653844A (en) * | 2018-12-27 | 2019-04-19 | 凯龙高科技股份有限公司 | A kind of control method that urea liquid supply pump pressure is stable |
| CN111149270A (en) * | 2017-09-22 | 2020-05-12 | 株式会社电装 | Vehicle power supply system and power supply control device |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013060872A (en) * | 2011-09-13 | 2013-04-04 | Hitachi Automotive Systems Ltd | Drive control device for fuel pump |
| JP5577311B2 (en) * | 2011-09-13 | 2014-08-20 | 日立オートモティブシステムズ株式会社 | Fuel pump drive control device |
| JP6234210B2 (en) * | 2013-12-19 | 2017-11-22 | キヤノン株式会社 | Stepping motor control device, optical device and interchangeable lens |
| JP2017057741A (en) * | 2015-09-15 | 2017-03-23 | 株式会社デンソー | Valve device |
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- 2008-06-17 CN CN200880129577.5A patent/CN102046957B/en active Active
- 2008-06-17 WO PCT/JP2008/061030 patent/WO2009153859A1/en active Application Filing
- 2008-06-17 JP JP2010517583A patent/JP5106632B2/en active Active
- 2008-08-07 TW TW097130013A patent/TWI362474B/en not_active IP Right Cessation
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| JPS61164062A (en) * | 1985-01-17 | 1986-07-24 | Honda Motor Co Ltd | Fuel supply device of internal combustion engine |
| JPH09126029A (en) * | 1995-11-01 | 1997-05-13 | Kokusan Denki Co Ltd | Method and device for controlling fuel pump of fuel injection device for internal combustion engine |
| JPH10318069A (en) * | 1997-05-20 | 1998-12-02 | Honda Motor Co Ltd | Driving device for fuel pump of motorcycle |
| JP2003120452A (en) * | 2001-10-09 | 2003-04-23 | Mikuni Corp | Driving method for plunger pump |
| CN1708637A (en) * | 2002-10-30 | 2005-12-14 | 株式会社三国 | Fuel injection method |
| WO2005083257A1 (en) * | 2004-03-01 | 2005-09-09 | Yamaha Hatsudoki Kabushiki Kaisha | Fuel pump control device and fuel pump control method |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111149270A (en) * | 2017-09-22 | 2020-05-12 | 株式会社电装 | Vehicle power supply system and power supply control device |
| CN111149270B (en) * | 2017-09-22 | 2023-10-31 | 株式会社电装 | Vehicle power supply system and power supply control device |
| CN109653844A (en) * | 2018-12-27 | 2019-04-19 | 凯龙高科技股份有限公司 | A kind of control method that urea liquid supply pump pressure is stable |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102046957B (en) | 2013-03-27 |
| TWI362474B (en) | 2012-04-21 |
| JPWO2009153859A1 (en) | 2011-11-24 |
| JP5106632B2 (en) | 2012-12-26 |
| WO2009153859A1 (en) | 2009-12-23 |
| TW201000828A (en) | 2010-01-01 |
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