CN102297030A - Electric supercharging system for automotive engines and electric supercharging method - Google Patents
Electric supercharging system for automotive engines and electric supercharging method Download PDFInfo
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- CN102297030A CN102297030A CN2011102157352A CN201110215735A CN102297030A CN 102297030 A CN102297030 A CN 102297030A CN 2011102157352 A CN2011102157352 A CN 2011102157352A CN 201110215735 A CN201110215735 A CN 201110215735A CN 102297030 A CN102297030 A CN 102297030A
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Abstract
The invention is applicable to the field of automotive electric control systems, and provides an electric supercharging system for automotive engines and an electric supercharging method. The electric supercharging system comprises an engine revolution speed sensor, a knock sensor, a throttle position sensor, an oxygen sensor, a singlechip and a supercharging motor, the engine revolution speed sensor acquires and processes the position signal of an engine crankshaft and outputs an engine revolution speed signal, the knock sensor outputs the knock signal of an engine, the throttle position sensor indirectly provides a throttle size signal, the oxygen sensor detects the concentration of oxygen in the exhaust gas of the engine, and the singlechip controls the revolution speed of the electric supercharging motor in real time according to the output signals of the four sensors. Consequently, as the revolution speed of the gasoline engine changes, the revolution speed of the supercharging motor changes as well, and thereby the supercharged volume and the revolution speed of the gasoline engine can be matched.
Description
Technical field
The invention belongs to motorcar electric control system field, relating in particular to a kind of motor speed can be according to the electronic supercharging device and the method for the self-reacting motor car engine of motor real-time working condition.
Background technique
Along with the continuous development of society, people are also more and more higher to the requirement of vehicle, and a powerful and fuel-efficient car become numerous people's pursuit, and the engine booster technology is exactly to have produced in a such environment.Have two big supercharging technology camps now in the automotive society, that is exactly turbosupercharging and engine driven supercharging.Electronic supercharging is emerging in recent years a kind of engine booster technology.Because the main body of electronic supercharging is a motor, this just has been doomed electronic supercharging has control and more wide application prospect more flexibly than turbosupercharging and engine driven supercharging.
But the technology of the electronic supercharging that present stage occurs is still lower, from being accepted to also have far road to walk by vast automobile vendor.The electronic supercharging scheme great majority that occur on the market all are directly from the storage battery power taking now, and driving one has the brush motor, and motor drives flabellum pressurized air again; It is to adopt DC Brushless Motor to drive flabellum to control motor speed by throttle that some more advanced schemes are also arranged with being in proportion.
Because the structure and the principle of brush motor have determined that its rotating speed can be too not high, rotating speed is not high to make that naturally the supercharging value is little, and pressurized effect is not obvious etc., so use the electronic supercharging technology of brush motor substantially to eliminate.
Though it is very high that brushless motor speed can reach, must be controlled just rotating speed and can have been given play to its effect.Petrolic speed range is wide, and working conditions change is frequent, and the required air inflow of different rotating speeds is also inequality.If motor supercharging rotating speed of motor under which kind of rotating speed all immobilizes, will cause engine low rotation when speed supercharging excessive so, the tendency to detonate of motor increases.But supercharging quantity not sufficient when the high rotating speed of motor, even the air inflow that is produced when the supercharging motor will make motor unable or breathing heavily when high rotating speed when being less than the required air inflow of motor, influences the due power output of motor.
Summary of the invention
In order to solve the problems of the technologies described above, the purpose of the embodiment of the invention is to provide a kind of electronic supercharging device of motor car engine.
The embodiment of the invention is to realize like this, a kind of electronic supercharging device of motor car engine, the electronic supercharging device of described motor car engine comprises: engine rotation speed sensor, detonation sensor, throttle position sensor, lambda sensor, single-chip microcomputer and supercharging motor
Described speed probe, detonation sensor, throttle position sensor, lambda sensor all are connected to the input end of described single-chip microcomputer, and the output terminal of described single-chip microcomputer links to each other with the supercharging motor,
Described engine rotation speed sensor is gathered the position signal of engine crankshaft by handling the output engine rotational speed signal, the detonation signal of described detonation sensor output motor, described throttle position sensor provides the signal of throttle size indirectly, the concentration of oxygen in the exhaust of lambda sensor detection of engine, described single-chip microcomputer is controlled electronic supercharging rotating speed of motor in real time according to above-mentioned four signal of sensor.
Further, described electronic supercharging device also comprises:
Pinking rotating speed adjusting module is used for sending control signal the supercharging rotating speed of motor being adjusted when detonation sensor detects the generation pinking;
Supercharging motor speed logging modle is used to write down petrol engine under various rotating speeds, through the adjusted supercharging rotating speed of motor of pinking,
Described pinking rotating speed adjusting module and supercharging motor speed logging modle are integrated in the described single-chip microcomputer, perhaps, are stored in the storage by the single-chip microcomputer execution of electronic supercharging device.
Further, described electronic supercharging device also comprises:
Quick electric supercharging module is used for after petrol engine starts, and according to the record data of supercharging motor speed logging modle, calls supercharging motor speed corresponding under the current petrolic rotating speed.
Further, be integrated with idle signal and throttle position signal on the described throttle position sensor, described idle signal is used for giving the single-chip microcomputer signal at engine idle or before starting, single-chip microcomputer is according to described idle signal, before engine start, electronic supercharging is opened, make motor before startup, promptly obtain certain suction pressure, be beneficial to the startup of motor.
Another purpose of the embodiment of the invention is to provide a kind of electronic boosting method of motor car engine, may further comprise the steps:
Engine rotation speed sensor is gathered the position signal of engine crankshaft by handling the output engine rotational speed signal;
The detonation signal of detonation sensor output motor;
Throttle position sensor provides the signal of throttle size indirectly;
The concentration of oxygen in the exhaust of lambda sensor detection of engine;
Single-chip microcomputer is controlled electronic supercharging rotating speed of motor in real time according to above-mentioned four signal of sensor.
Further, described method also comprises:
When detonation sensor detects the generation pinking, send control signal the supercharging rotating speed of motor is adjusted;
The record petrol engine is under various rotating speeds, through the adjusted supercharging rotating speed of motor of pinking.
Further, described method also comprises:
After petrol engine starts,, call supercharging motor speed corresponding under the current petrolic rotating speed supercharging motor directly is set according to the adjusted supercharging rotating speed of motor of the process pinking data of record.
In an embodiment of the present invention, by gathering current petrolic a plurality of parameters, adjust the supercharging rotating speed of motor.Like this, just along with petrolic rotation speed change, the supercharging rotating speed of motor also changes, thereby makes supercharging amount and petrolic rotating speed arrive matching status.
Description of drawings
Fig. 1 is the structural representation of the electronic supercharging device of the motor car engine that provides of the embodiment of the invention;
Fig. 2 is the flow chart according to detonation sensor adjustment supercharging rotating speed of motor that the embodiment of the invention provides.
Embodiment
In order to make purpose of the present invention, technological scheme and advantage clearer,, the present invention is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
Because simple supercharging motor speed and the proportional variation of engine speed is very rough.The control loop that accurate control mode is closed loops of composition such as binding engine speed probe, throttle position sensor, detonation sensor and lambda sensor is regulated the supercharging motor speed at any time.
Fig. 1 shows the structure of the electronic supercharging device of the motor car engine that the embodiment of the invention provides,
This device is the control main body at dc brushless motor, this device comprises engine rotation speed sensor, detonation sensor, throttle position sensor, lambda sensor, single-chip microcomputer (big capacity, high speed), supercharging motor, described speed probe, detonation sensor, throttle position sensor, lambda sensor all are connected to the input end of described single-chip microcomputer, and the output terminal of described single-chip microcomputer links to each other with the supercharging motor.
The position signal that engine rotation speed sensor is responsible for gathering engine crankshaft obtains engine rotational speed signal by processing, and engine rotation speed sensor provides real-time engine rotational speed signal to single-chip microcomputer.Detonation sensor provides the detonation signal of motor to single-chip microcomputer, and single-chip microcomputer is handled accordingly according to the power and the size of pinking again.Throttle position sensor provides the signal of throttle size indirectly, to the clear driver's of scm table intention, is convenient to carry out the man-machine communication.Lambda sensor is by the concentration of oxygen in the exhaust of detection of engine, provides the whether foundation of perfect combustion of mixed gas in the motor to single-chip microcomputer.Single-chip microcomputer is controlled electronic supercharging rotating speed of motor size in real time according to the signal of above-mentioned four sensors.Certainly, as embodiments of the invention, also can adopt the part signal in the signal of four sensors.
As embodiments of the invention, electronic supercharging device also comprises: pinking rotating speed adjusting module is used for sending control signal the supercharging rotating speed of motor being adjusted when detonation sensor detects the generation pinking; Supercharging motor speed logging modle is used to write down petrol engine under various rotating speeds, through the adjusted supercharging rotating speed of motor of pinking.Described pinking rotating speed adjusting module and supercharging motor speed logging modle are integrated in the described single-chip microcomputer, perhaps, be stored in the storage of carrying out by single-chip microcomputer of electronic supercharging device (be that pinking rotating speed adjusting module, supercharging motor speed logging modle are computer program instructions, carry out) by single-chip microcomputer.
As embodiments of the invention, described electronic supercharging device also comprises: quick electric supercharging module, be used for after petrol engine starts,, call supercharging motor speed corresponding under the current petrolic rotating speed according to the record data of supercharging motor speed logging modle.
Because the rotating speed of motor car engine can reach very high, generally can reach 7000 rpms, in order not influence the speed of response of motor, single-chip microcomputer of the present invention adopts big capacity, single-chip microcomputer at a high speed.
Wherein, be integrated with idle signal and throttle position signal on the throttle position sensor, idle signal is used for giving the single-chip microcomputer signal at engine idle or before starting, single-chip microcomputer is according to this signal, before engine start, electronic supercharging is opened, make motor before startup, promptly obtain certain suction pressure, be beneficial to the startup of motor.When idling, keep certain supercharging amount to help the smooth running and the reduction discharging of motor.As embodiments of the invention, during vehicle driving, single-chip microcomputer in certain algorithm ratio, is regulated electronic supercharging rotating speed of motor according to the size (being the throttle size) of throttle position signal and detonation signal, makes motor can obtain suitable suction pressure in different operating modes.As embodiments of the invention, single-chip microcomputer specifically comprises in certain algorithm ratio adjusting supercharging rotating speed of motor according to the size (being the throttle size) and the detonation signal of throttle position signal: the scaling factor k that can set a correspondence according to the petrol engine of different displacements, the detonation signal difference that obtains in the unit time, the k value can reduce accordingly.When detonation signal is many more, then the k value is more little.The throttle signal size is made as D.Motor speed R=k*D.
For overcoming the increase of the tendency to detonate that brings because of supercharging, the present invention has adopted the self adaptive control of eliminating the electronic supercharging motor speed of pinking.Detect its pinking information by detonation sensor, output waveform is carried out Shelving, and judge the power that has or not pinking generation and pinking to take place, carry out motor speed control by single-chip microcomputer then.Supercharging motor speed when pinking at first reduce to take place, treat that pinking is eliminated after, progressively increase the supercharging rotating speed of motor adaptively, motor is in pinking neither takes place, be in comparatively desirable supercharging working state again.Adopt after the pinking control, can avoid that performance motor potential takes place to increase engine charge pressure to greatest extent under the prerequisite of pinking.
Because different petrol engines has different performance characteristic, even same motor in different regions or different times different performance characteristic is also arranged, so the adaptive learning function is very important.In embodiments of the present invention, single-chip microcomputer can be noted under the different rotating speeds through the adjusted motor speed of pinking, and the motor speed data under a plurality of different rotating speeds have formed that an engine speed---the database storage of motor speed is in single-chip microcomputer.Like this, when next motor moves, directly call the corresponding data in the database, accelerated the speed of response of electronic supercharging.When calling database, pinking once in a while can not influence the supercharging rotating speed of motor.But when repeatedly pinking taking place in a unit time, change has taken place in the performance that change or motor itself have taken place the Environmental Conditions that motor has been described, at this moment, single-chip microcomputer can be adjusted motor speed according to detonation signal once more, supercharging rotating speed of motor under this engine speed of lane database that can the replacement of the supercharging motor speed under this new engine speed is original after adjustment is finished, generate new database, the adaptive learning function of electronic supercharging that Here it is.
Details are as follows for the electronic boosting method implementing procedure of motor car engine: engine rotation speed sensor is gathered the position signal of engine crankshaft by handling the output engine rotational speed signal; The detonation signal of detonation sensor output motor; Throttle position sensor provides the signal of throttle size indirectly; The concentration of oxygen in the exhaust of lambda sensor detection of engine; Single-chip microcomputer is controlled electronic supercharging rotating speed of motor in real time according to above-mentioned four signal of sensor.
Wherein, the process of adjusting the supercharging rotating speed of motor according to detonation sensor as shown in Figure 2, details are as follows:
Step 1:, behind ato unit,, export corresponding supercharging motor speed by the database of storage according to the current tach signal of motor for rapid adjustment supercharging rotating speed of motor.
Step 2: judge whether to take place pinking.If pinking execution in step 3 takes place, otherwise process ends.
Step 3: when pinking takes place, the supercharging motor is carried out the rotating speed adjustment.
Step 4: judge whether to take place pinking once more.If also pinking takes place, return step 3, otherwise execution in step 5.
Step 5: the supercharging rotating speed of motor that refreshes storage.
By this process, constantly write down petrol engine under various rotating speeds, through the adjusted supercharging rotating speed of motor of pinking.Thereby form a database, this database has been stored: petrol engine is under various rotating speeds, through the adjusted corresponding supercharging rotating speed of motor of pinking.
Behind next engine start, just can call supercharging motor speed corresponding under the current petrolic rotating speed supercharging motor directly is set.
The above only is preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of being done within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (7)
1. the electronic supercharging device of a motor car engine is characterized in that, the electronic supercharging device of described motor car engine comprises: engine rotation speed sensor, detonation sensor, throttle position sensor, lambda sensor, single-chip microcomputer and supercharging motor,
Described speed probe, detonation sensor, throttle position sensor, lambda sensor all are connected to the input end of described single-chip microcomputer, and the output terminal of described single-chip microcomputer links to each other with the supercharging motor,
Described engine rotation speed sensor is gathered the position signal of engine crankshaft by handling the output engine rotational speed signal, the detonation signal of described detonation sensor output motor, described throttle position sensor provides the signal of throttle size indirectly, the concentration of oxygen in the exhaust of lambda sensor detection of engine, described single-chip microcomputer is controlled electronic supercharging rotating speed of motor in real time according to above-mentioned four signal of sensor.
2. the electronic supercharging device of motor car engine according to claim 1 is characterized in that, described electronic supercharging device also comprises:
Pinking rotating speed adjusting module is used for sending control signal the supercharging rotating speed of motor being adjusted when detonation sensor detects the generation pinking;
Supercharging motor speed logging modle is used to write down petrol engine under various rotating speeds, through the adjusted supercharging rotating speed of motor of pinking,
Described pinking rotating speed adjusting module and supercharging motor speed logging modle are integrated in the described single-chip microcomputer, perhaps, are stored in the storage by the single-chip microcomputer execution of electronic supercharging device.
3. the electronic supercharging device of motor car engine according to claim 2 is characterized in that, described electronic supercharging device also comprises:
Quick electric supercharging module is used for after petrol engine starts, and according to the record data of supercharging motor speed logging modle, calls supercharging motor speed corresponding under the current petrolic rotating speed.
4. the electronic supercharging device of motor car engine according to claim 1, it is characterized in that, be integrated with idle signal and throttle position signal on the described throttle position sensor, described idle signal is used for giving the single-chip microcomputer signal at engine idle or before starting, single-chip microcomputer is according to described idle signal, before engine start, electronic supercharging is opened, make motor before startup, promptly obtain certain suction pressure, be beneficial to the startup of motor.
5. the electronic boosting method of a motor car engine is characterized in that, said method comprising the steps of:
Engine rotation speed sensor is gathered the position signal of engine crankshaft by handling the output engine rotational speed signal;
The detonation signal of detonation sensor output motor;
Throttle position sensor provides the signal of throttle size indirectly;
The concentration of oxygen in the exhaust of lambda sensor detection of engine;
Single-chip microcomputer is controlled electronic supercharging rotating speed of motor in real time according to above-mentioned four signal of sensor.
6. the electronic boosting method of motor car engine according to claim 5 is characterized in that, described method also comprises:
When detonation sensor detects the generation pinking, send control signal the supercharging rotating speed of motor is adjusted;
The record petrol engine is under various rotating speeds, through the adjusted supercharging rotating speed of motor of pinking.
7. the electronic boosting method of motor car engine according to claim 6 is characterized in that, described method also comprises:
After petrol engine starts,, call supercharging motor speed corresponding under the current petrolic rotating speed supercharging motor directly is set according to the adjusted supercharging rotating speed of motor of the process pinking data of record.
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| CN2011102157352A CN102297030A (en) | 2011-07-29 | 2011-07-29 | Electric supercharging system for automotive engines and electric supercharging method |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108412642A (en) * | 2015-07-24 | 2018-08-17 | 朱保生 | Petrol engine with exhaust gas turbocharge auxiliary device and grass trimmer |
| CN108443009A (en) * | 2015-07-24 | 2018-08-24 | 吴红平 | Grass trimmer with exhaust gas turbocharge auxiliary device |
| CN108730042A (en) * | 2015-07-24 | 2018-11-02 | 丁永新 | Prevent the grass trimmer of engine misses |
| CN108730043A (en) * | 2015-07-24 | 2018-11-02 | 丁永新 | Power loosens the grass trimmer weakened immediately with accelerator control device |
| CN108798906A (en) * | 2015-07-24 | 2018-11-13 | 丁永新 | A kind of working method of grass trimmer |
| CN108798905A (en) * | 2015-07-24 | 2018-11-13 | 丁永新 | Power loosens the grass trimmer weakened immediately with accelerator control device |
| CN108934472A (en) * | 2015-07-24 | 2018-12-07 | 朱保生 | A kind of grass trimmer |
| CN109139236A (en) * | 2017-06-16 | 2019-01-04 | 云杉智慧新能源技术有限公司 | A kind of electronic pressure charging system and its control method |
| CN114352402A (en) * | 2022-01-17 | 2022-04-15 | 中船重工(重庆)西南装备研究院有限公司 | Self-adaptive control system of supercharger |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108412642A (en) * | 2015-07-24 | 2018-08-17 | 朱保生 | Petrol engine with exhaust gas turbocharge auxiliary device and grass trimmer |
| CN108443009A (en) * | 2015-07-24 | 2018-08-24 | 吴红平 | Grass trimmer with exhaust gas turbocharge auxiliary device |
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| CN109139236A (en) * | 2017-06-16 | 2019-01-04 | 云杉智慧新能源技术有限公司 | A kind of electronic pressure charging system and its control method |
| CN114352402A (en) * | 2022-01-17 | 2022-04-15 | 中船重工(重庆)西南装备研究院有限公司 | Self-adaptive control system of supercharger |
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Application publication date: 20111228 |