CN105020033A - Between-cylinder balance control method and system for dual-fuel engine and automobile - Google Patents
Between-cylinder balance control method and system for dual-fuel engine and automobile Download PDFInfo
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- CN105020033A CN105020033A CN201410177025.9A CN201410177025A CN105020033A CN 105020033 A CN105020033 A CN 105020033A CN 201410177025 A CN201410177025 A CN 201410177025A CN 105020033 A CN105020033 A CN 105020033A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
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Abstract
The invention provides a between-cylinder balance control method and system for a dual-fuel engine and an automobile. The method includes the following steps that an accelerator pedal signal is obtained; the load state of the engine is judged according to the accelerator pedal signal; if the engine is in the first load state, the oil amount differences of oil amounts in multiple cylinders of the engine are calculated according to crankshaft rotating speed signals of the engine; and the oil amounts in the multiple cylinders are balanced according to the oil amount differences of the oil amounts in the multiple cylinders. By means of the control method, the oil amounts in all the cylinders can be regulated in real time according to the change situations of the rotating speed of a crankshaft so that the oil amounts can be balanced, and the situations of rotating speed fluctuation and torque instability which are caused by the unbalanced oil injection amounts of all the cylinders of the engine are eliminated.
Description
Technical field
The present invention relates to field of automobile, balance control method, system and there is the automobile of this system between the cylinder of particularly a kind of duel fuel engine.
Background technique
Duel fuel engine generally has multiple cylinder.For the motor that gasoline premix is diesel oil ignited, when gasoline is just got involved, because fuel injection quantity is little, affect by gasoline ejector inherent characteristic, the actual oil mass spraying into each cylinder differs greatly, and causes engine speed fluctuations, moment of torsion unstable.Therefore, need to carry out equilibrium to the oil mass in each cylinder.
Balance sysmte between current engine cylinder, major part is only done by cylinder EQUILIBRIUM CALCULATION FOR PROCESS for diesel engine, ensure the conformity of oil sprayer performance in common rail system as by FUZZY ALGORITHMS FOR CONTROL and make up static compensation deficiency and reach between cylinder and balance object, or all operating modes only carry out deviation compensation according to speed of crankshaft signal to diesel oil fuel injection quantity.And for duel fuel engine cylinder between the concrete controlling method of balance sysmte temporarily also do not have.
Summary of the invention
The present invention is intended to solve one of technical problem in above-mentioned correlation technique at least to a certain extent.
For this reason, one object of the present invention be propose duel fuel engine cylinder between balance control method, the method can carry out in real time adjustment to realize oil mass equilibrium according to speed of crankshaft situation of change to the oil mass in each cylinder, thus alleviates the situation of the fluctuation of speed that motor causes when each cylinder fuel injection quantity is unbalanced, moment of torsion shakiness.
Balance control system between the cylinder that second object of the present invention is to provide a kind of duel fuel engine.
3rd object of the present invention is to provide a kind of automobile.
To achieve these goals, balance control method between the cylinder that the embodiment of first aspect present invention proposes a kind of duel fuel engine, comprises the following steps: obtain accelerator pedal signal; The load condition of motor is judged according to described accelerator pedal signal; If described motor is in the first load condition, then according to the speed of crankshaft calculated signals of motor motor multiple cylinders in the outage of oil mass; And according to the outage of the oil mass in described multiple cylinder, equilibrium is carried out to the oil mass in described multiple cylinder.
According to balance control method between the cylinder of the duel fuel engine of the embodiment of the present invention, motor be in the first load condition (in, low load condition) under time, the oil mass in each cylinder is also calculated accordingly by Real-time Obtaining speed of crankshaft signal, and obtain the oil mass deviation of the multiple cylinder of motor further, and according to oil mass deviation, the oil mass in each cylinder is compensated, with the oil mass in each cylinder of equilibrium, thus the moment of torsion instability (moment of torsion is uprushed or bust) that motor caused when gasoline has just been got involved or straying quatity is less can be alleviated, the situation of the fluctuation of speed, in other words, balancing speed can be realized, the object of steady torque.
In addition, between the cylinder of duel fuel engine according to the above embodiment of the present invention, balance control method can also have following additional technical characteristics:
In some instances, described judge the load condition of motor according to described accelerator pedal signal after, also comprise: if described motor is in the second load condition, the outage of the oil mass in multiple cylinders of described motor is then judged according to the speed of crankshaft signal of described motor and detonation signal, wherein, the load under described first load condition is less than the load under described second load condition.
In some instances, also comprise: the aperture variation tendency judging gas pedal according to accelerator pedal signal; Aperture variation tendency according to described gas pedal carries out equilibrium to the oil mass in described multiple cylinder.
In some instances, the described aperture variation tendency according to described gas pedal carries out equilibrium to the oil mass in described multiple cylinder, specifically comprise: if the aperture of described gas pedal reduces, then according to the oil mass in the minimum cylinder of oil mass in described multiple cylinder, the oil mass in other cylinder is adjusted; If the aperture of described gas pedal increases, then according to the oil mass in the maximum cylinder of oil mass in described multiple cylinder, the oil mass in other cylinder is adjusted.
Balance control system between the cylinder that the embodiment of second aspect present invention provides a kind of duel fuel engine, comprising: acquisition module, described acquisition module is for obtaining accelerator pedal signal; Judge module, judge module is used for the load condition judging motor according to described accelerator pedal signal; Computing module, described computing module is used for when described motor is in the first load condition, according to the speed of crankshaft calculated signals of motor motor multiple cylinders in the outage of oil mass; And balance module, described balance module is used for carrying out equilibrium according to the outage of the oil mass in described multiple cylinder to the oil mass in described multiple cylinder.
According to balance control system between the cylinder of the duel fuel engine of the embodiment of the present invention, motor be in the first load condition (in, low load condition) under time, the oil mass in each cylinder is also calculated accordingly by Real-time Obtaining speed of crankshaft signal, and obtain the oil mass deviation of the multiple cylinder of motor further, and according to oil mass deviation, the oil mass in each cylinder is compensated, with the oil mass in each cylinder of equilibrium, thus the moment of torsion instability (moment of torsion is uprushed or bust) that motor caused when gasoline has just been got involved or straying quatity is less can be alleviated, the situation of the fluctuation of speed, in other words, balancing speed can be realized, the object of steady torque.
In addition, between the cylinder of duel fuel engine according to the above embodiment of the present invention, balance control system can also have following additional technical characteristics:
In some instances, described computing module is also for when described motor is in the second load condition, according to the outage of the oil mass in the speed of crankshaft signal of motor and multiple cylinders of detonation signal calculation engine, wherein, the load under described first load condition is less than the load under the second load condition.
In some instances, described judge module is also for judging the aperture variation tendency of gas pedal according to accelerator pedal signal, described balance module also carries out equilibrium for the aperture variation tendency according to described gas pedal to the oil mass in described multiple cylinder.
In some instances, described balance module is used for when the aperture of described gas pedal reduces, according to the oil mass in the cylinder that oil mass in described multiple cylinder is minimum, oil mass in other cylinder is adjusted, and when the aperture of described gas pedal increases, according to the oil mass in the cylinder that oil mass in described multiple cylinder is maximum, oil mass in other cylinder is adjusted.
Third aspect present invention embodiment still provides a kind of automobile, balance control system between the cylinder comprising the described duel fuel engine that the present invention's above-mentioned second aspect embodiment provides.
According to the automobile of the embodiment of the present invention, motor be in the first load condition (in, low load condition) under time, the oil mass in each cylinder is also calculated accordingly by Real-time Obtaining speed of crankshaft signal, and obtain the oil mass deviation of the multiple cylinder of motor further, and according to oil mass deviation, the oil mass in each cylinder is compensated, with the oil mass in each cylinder of equilibrium, thus the moment of torsion instability (moment of torsion is uprushed or bust) that motor caused when gasoline has just been got involved or straying quatity is less can be alleviated, the situation of the fluctuation of speed, in other words, balancing speed can be realized, the object of steady torque.
Additional aspect of the present invention and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by practice of the present invention.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present invention and advantage will become obvious and easy understand from accompanying drawing below combining to the description of embodiment, wherein:
Fig. 1 be duel fuel engine according to an embodiment of the invention cylinder between the flow chart of balance control method;
Fig. 2 be duel fuel engine in accordance with another embodiment of the present invention cylinder between the flow chart of balance control method; With
Fig. 3 be duel fuel engine according to an embodiment of the invention cylinder between the structured flowchart of balance control system; With
Fig. 4 is the schematic diagram of the diesel oil ignited motor of gasoline premix according to an embodiment of the invention.
Embodiment
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Being exemplary below by the embodiment be described with reference to the drawings, only for explaining the present invention, and can not limitation of the present invention being interpreted as.
Below in conjunction with accompanying drawing description according to balance control method, system and automobile between the cylinder of the duel fuel engine of the embodiment of the present invention.
Describing between the cylinder according to the duel fuel engine of the embodiment of the present invention before balance control method, first to duel fuel engine, such as: the structure of the diesel oil ignited motor of gasoline premix is described.As shown in Figure 4, the diesel oil ignited motor of gasoline premix comprises: air-strainer 1, Air flow meter 2, turbosupercharger 3, low pressure EGR heat exchanger 4, well-to-do lambda sensor 5, DPF grain catcher 6, outlet pipe 7, high pressure EGR pipe road 8, low pressure EGR valve (9-1), high pressure EGR valve (9-2), closure 10, air intake intercooler 11, air inlet temperature/pressure sensor 12, gasoline oil rail assembly 13, suction tude 14, diesel injector 15 and gasoline premix diesel oil ignited motor GFICE engine body 16, alternatively, also can comprise high pressure EGR heat exchanger A.
Fig. 1 be duel fuel engine according to an embodiment of the invention cylinder between the flow chart of balance control method.As shown in Figure 1, balance control method between the cylinder of duel fuel engine according to an embodiment of the invention, comprises the following steps:
Step S101, obtains accelerator pedal signal.In other words, namely obtain the change in location situation of gas pedal, such as gas pedal is stepped on, gas pedal is unclamped or accelerator pedal position is constant.
Step S102, judges the load condition of motor according to accelerator pedal signal.
Step S103, if motor is in the first load condition, then according to the outage of the oil mass in multiple cylinders of the speed of crankshaft calculated signals motor of motor.Wherein, in one particular embodiment of the present invention, the first load condition refer to motor be in, low load condition.In other words, namely when gas pedal is unclamped, the load of motor reduces, then judge that motor is in the first load condition (namely, low load condition), then calculate the oil mass in each cylinder of motor respectively according to the speed of crankshaft signal of motor further, and then the outage of the oil mass in multiple cylinder can be obtained.
On the other hand, in one embodiment of the invention, if motor is in the second load condition, the outage of the oil mass in multiple cylinders of motor is then judged according to the speed of crankshaft signal of motor and detonation signal, wherein, the load under the first load condition is less than the load under the second load condition.Specifically, in one particular embodiment of the present invention, the second load condition refers to motor and is in higher load condition.In other words, namely when gas pedal is stepped on, the load of motor increases, then judge that motor is in the second load condition (i.e. higher load condition), due at high load conditions, Vibration Cylinder Body amount is comparatively large, therefore, the oil mass in each cylinder need be calculated in conjunction with speed of crankshaft signal and detonation signal respectively, and then the outage of the oil mass in each cylinder can be obtained.
Step S104, the outage according to the oil mass in multiple cylinder carries out equilibrium to the oil mass in multiple cylinder.Specifically, according to the outage of the oil mass in the multiple cylinders obtained under the first load condition obtained in above-mentioned steps S103 or under the second load condition, oil mass compensation is carried out to the oil mass in each cylinder, reach balanced to make each cylinder oil mass, thus can in motor is in, low load condition time, make that the rotating speed of motor balances, torque levels.In addition, when motor is in higher load condition, on the basis preventing roughness noise, make engine speed balance, torque levels, also can prevent the engine knock phenomenon caused because compensation rate is excessive.
It should be noted that, consider that duel fuel engine gasoline mixed ratio has a great impact discharge NOx and soot, therefore, embodiments of the invention only compensate gasoline departure, and do not adjust diesel oil.In other words, namely embodiments of the invention compensate adjustment with the form of gasoline to the oil mass in each cylinder.
Further, in one embodiment of the invention, said method is further comprising the steps of:
Step 1, judges the aperture variation tendency of gas pedal according to accelerator pedal signal.In other words, namely judge the change in location situation of gas pedal, such as gas pedal is stepped on (aperture reduction), gas pedal unclamps (aperture increase).
Step 2, the aperture variation tendency according to the gas pedal obtained in above-mentioned steps 1 carries out equilibrium to the oil mass in multiple cylinder.Specifically comprise the following steps:
Step 3, if the aperture of gas pedal reduces, then adjusts the oil mass in other cylinder according to the oil mass in the minimum cylinder of oil mass in multiple cylinder.Specifically, when instantaneous conditions, when gas pedal aperture reduces, namely gas pedal is stepped on, then now motor is in higher load condition, then calculate the oil mass in each cylinder according to speed of crankshaft signal and detonation signal, and obtain the cylinder (i.e. the minimum cylinder of negative deviation) that in multiple cylinder, oil mass is minimum, and in preset loop (preset loop refers to each cylinder all to bent axle acting cyclic process once), not minimum to this oil mass cylinder carries out fuel volume adjusting, only reduce the straying quatity in other cylinder, with the oil mass in the multiple cylinder of equilibrium.
Step 4, if the aperture of gas pedal increases, then adjusts the oil mass in other cylinder according to the oil mass in the maximum cylinder of oil mass in multiple cylinder.Specifically, when instantaneous conditions, when the aperture of gas pedal increases, namely gas pedal is unclamped, then during now motor is in, low load condition, then obtain the oil mass in each cylinder according to speed of crankshaft calculated signals, and obtain the cylinder (i.e. the most vat of overgauge) that in multiple cylinder, oil mass is maximum, and in preset loop, not maximum to this oil mass cylinders carries out fuel volume adjusting, only increases the straying quatity of other cylinder.Further, after exceeding preset loop, then entirety compensates adjustment to the oil mass of each cylinder, to ensure speed of crankshaft gentle transition, reduces and impacts sense.
In sum, the method of the above embodiment of the present invention, time in motor is in, under low load condition, according to speed of crankshaft situation of change to each cylinder oil mass real-Time Compensation, the moment of torsion that alleviation duel fuel engine has brought when gasoline has just been got involved or straying quatity is less is uprushed or bust phenomenon, reduces the negative effect that the little oil mass identity of injection difference of gasoline ejector causes.In addition, time under motor is in higher load condition, calculate the compensation rate of each cylinder oil mass that often circulates in conjunction with speed of crankshaft signal and detonation signal, not only accurately can control the stationarity of rotating speed and moment of torsion, the engine knock phenomenon that also can cause roughness noise carries out Real-Time Monitoring, improves vibration noise.In conjunction with the variation tendency of throttle during instantaneous operating mode, do not adjust, only according to the oil mass demand of other cylinders of load adjustment wherein a cylinder oil mass deviation is maximum or minimum in certain circulation, after exceeding this circulation, normally carry out deviation compensation again, thus can ensure that rotating speed transition is mild, reduce and impact sense.
As a concrete example, below in conjunction with Fig. 2, systematic description is carried out to balance control method between the cylinder of the duel fuel engine of the above embodiment of the present invention.
As shown in Figure 2, balance control method between the cylinder of duel fuel engine in accordance with another embodiment of the present invention, comprises the following steps:
Step S201, gathers accelerator pedal signal.
Step S202, judges whether motor is higher load condition.Specifically, namely judge whether motor is in higher load condition according to accelerator pedal signal, if so, then perform step S204, otherwise perform step S203.Wherein, when gas pedal is stepped on, motor is in higher load condition, when gas pedal is unclamped, during motor is in, low load condition.
Step S203, when motor is not in higher load condition, obtains speed of crankshaft signal, and performs step S205 further.
Step S204, when motor is in higher load condition, obtains speed of crankshaft signal and detonation signal, and performs step S205 further.
Step S205, calculates oil mass deviation.Specifically, in, low load condition time, obtain each cylinder oil mass deviation according to speed of crankshaft calculated signals.When higher load condition, calculate each cylinder oil mass deviation according to crankshaft signal and detonation signal, and according to oil mass deviation, with the form of gasoline, oil mass compensation is carried out to each cylinder further.
Step S206, judges gas pedal aperture variation tendency, and performs step S207, step S209 or step S211 further.
Step S207, judge that gas pedal aperture reduces, namely now motor is in higher load condition, and performs step S208 further.
Step S208, does not compensate the minimum cylinder of negative deviation in preset loop, and performs step S212 further.Specifically, when instantaneous conditions, when gas pedal aperture reduces, then calculate the oil mass in each cylinder according to speed of crankshaft signal and detonation signal, and obtain the cylinder (i.e. the minimum cylinder of negative deviation) that in multiple cylinder, oil mass is minimum, and in preset loop (preset loop refers to each cylinder all to bent axle acting cyclic process once), not minimum to this oil mass cylinder carries out fuel volume adjusting, only reduce the straying quatity in other cylinder, with the oil mass in the multiple cylinder of equilibrium.
Step S209, judges that gas pedal aperture increases, and during namely now motor is in, low load condition, and performs step S210 further.
Step S210, does not compensate the maximum cylinder of overgauge in preset loop, and performs step S212 further.Specifically, when instantaneous conditions, when the aperture of gas pedal increases, then obtain the oil mass in each cylinder according to speed of crankshaft calculated signals, and obtain the cylinder (i.e. the most vat of overgauge) that in multiple cylinder, oil mass is maximum, and in preset loop, not maximum to this oil mass cylinders carries out fuel volume adjusting, only increases the straying quatity of other cylinder.
Step S211, when judging that gas pedal aperture is constant, then performs step S213.
Step S212, after exceeding preset loop, performs step S213.
Step S213, carries out gasoline compensation to each cylinder respectively according to oil mass deviation, with the oil mass in the multiple cylinder of equilibrium, thus can ensure speed of crankshaft gentle transition, reduces and impacts sense, and performs step S214 further.
Step S214, judges whether engine speed balances, whether moment of torsion is stablized, and if so, then performs step S215, otherwise returns execution step S205.
Step S215, judge that between engine cylinder, balance is reached, the oil mass namely in multiple cylinder reaches balanced, and now engine speed balance, torque levels, in addition, there will not be engine knock phenomenon, and cylinder vibration noise is little.
According to balance control method between the cylinder of the duel fuel engine of the embodiment of the present invention, motor be in the first load condition (in, low load condition) under time, the oil mass in each cylinder is also calculated accordingly by Real-time Obtaining speed of crankshaft signal, and obtain the oil mass deviation of the multiple cylinder of motor further, and according to oil mass deviation, the oil mass in each cylinder is compensated, with the oil mass in each cylinder of equilibrium, thus the moment of torsion instability (moment of torsion is uprushed or bust) that motor caused when gasoline has just been got involved or straying quatity is less can be alleviated, the situation of the fluctuation of speed, in other words, balancing speed can be realized, the object of steady torque.In addition, when motor is in higher load condition, the oil mass deviation of multiple cylinder is calculated in conjunction with speed of crankshaft signal and detonation signal, and accordingly equilibrium is compensated to the oil mass in each cylinder, not only can balancing speed, steady torque, the engine knock phenomenon that also can cause roughness noise carries out Real-Time Monitoring, improves vibration noise.In addition, under instantaneous operating mode, in conjunction with the change in location trend of gas pedal, optionally the oil mass in multiple cylinder is adjusted, thus under different operating mode, ensure that rotating speed transition is mild, reduce and impact sense.
Balance control system between the cylinder that the present invention has also supplied a kind of duel fuel engine.
Fig. 3 be duel fuel engine according to an embodiment of the invention cylinder between the structured flowchart of balance control system.As shown in Figure 3, balance control system 300 between the cylinder of duel fuel engine according to an embodiment of the invention, comprising: acquisition module 310, judge module 320, computing module 330 and balance module 340.
Wherein, acquisition module 310 is for obtaining accelerator pedal signal.In other words, namely acquisition module 310 obtains the change in location situation of gas pedal, and such as gas pedal is stepped on, gas pedal is unclamped or accelerator pedal position is constant.
Judge module 320 is for judging the load condition of motor according to accelerator pedal signal.
Computing module 330 for when motor is in the first load condition, according to the outage of the oil mass in multiple cylinders of the speed of crankshaft calculated signals motor of motor.Wherein, in one particular embodiment of the present invention, the first load condition refer to motor be in, low load condition.In other words, namely when gas pedal is unclamped, the load of motor reduces, then judge module 320 judges that motor is in the first load condition (namely, low load condition), further, computing module 330 calculates the oil mass in each cylinder of motor respectively according to the speed of crankshaft signal of motor, and then can obtain the outage of the oil mass in multiple cylinder.
On the other hand, in one embodiment of the invention, computing module 330 is also for when motor is in the second load condition, according to the outage of the oil mass in the speed of crankshaft signal of motor and multiple cylinders of detonation signal calculation engine, wherein, the load under the first load condition is less than the load under the second load condition.Specifically, in one particular embodiment of the present invention, the second load condition refers to motor and is in higher load condition.In other words, namely when gas pedal is stepped on, the load of motor increases, then judge module 320 judges that motor is in the second load condition (i.e. higher load condition), due at high load conditions, Vibration Cylinder Body amount is comparatively large, therefore, computing module 330 calculates the oil mass in each cylinder respectively in conjunction with speed of crankshaft signal and detonation signal, and then can obtain the outage of the oil mass in each cylinder.
Balance module 340 is for carrying out equilibrium according to the outage in multiple cylinder to the oil mass in multiple cylinder.Specifically, according to the outage of the oil mass in the multiple cylinders obtained under the first load condition or under the second load condition, oil mass compensation is carried out to the oil mass in each cylinder, reach balanced to make each cylinder oil mass, thus can in motor is in, low load condition time, make that the rotating speed of motor balances, torque levels.In addition, when motor is in higher load condition, on the basis preventing roughness noise, make engine speed balance, torque levels, also can prevent the engine knock phenomenon caused because compensation rate is excessive.
It should be noted that, consider that duel fuel engine gasoline mixed ratio has a great impact discharge NOx and soot, therefore, embodiments of the invention only compensate gasoline departure, and do not adjust diesel oil.In other words, namely embodiments of the invention compensate adjustment with the form of gasoline to the oil mass in each cylinder.
Further, in one embodiment of the invention, judge module 320 is also for judging the aperture variation tendency of gas pedal according to accelerator pedal signal, balance module 340 also carries out equilibrium for the aperture variation tendency according to this gas pedal to the oil mass in multiple cylinder.Specifically, when the aperture of gas pedal reduces, balance module 340 adjusts the oil mass in other cylinder according to the oil mass in the minimum cylinder of oil mass in multiple cylinder, and when the aperture of gas pedal increases, according to the oil mass in the cylinder that oil mass in multiple cylinder is maximum, oil mass in other cylinder is adjusted.
In other words, namely when instantaneous conditions, when gas pedal aperture reduces, namely gas pedal is stepped on, then now motor is in higher load condition, then calculate the oil mass in each cylinder according to speed of crankshaft signal and detonation signal, and obtain the cylinder (i.e. the minimum cylinder of negative deviation) that in multiple cylinder, oil mass is minimum, and in preset loop (preset loop refers to each cylinder all to bent axle acting cyclic process once), not minimum to this oil mass cylinder carries out fuel volume adjusting, only reduce the straying quatity in other cylinder, with the oil mass in the multiple cylinder of equilibrium.On the other hand, when the aperture of gas pedal increases, namely gas pedal is unclamped, during then now motor is in, low load condition, then obtain the oil mass in each cylinder according to speed of crankshaft calculated signals, and obtain the cylinder (i.e. the most vat of overgauge) that in multiple cylinder, oil mass is maximum, and in preset loop, not maximum to this oil mass cylinders carries out fuel volume adjusting, only increases the straying quatity of other cylinder.Further, after exceeding preset loop, then entirety compensates adjustment to the oil mass of each cylinder, to ensure speed of crankshaft gentle transition, reduces and impacts sense.
According to balance control system between the cylinder of the duel fuel engine of the embodiment of the present invention, motor be in the first load condition (in, low load condition) under time, the oil mass in each cylinder is also calculated accordingly by Real-time Obtaining speed of crankshaft signal, and obtain the oil mass deviation of the multiple cylinder of motor further, and according to oil mass deviation, the oil mass in each cylinder is compensated, with the oil mass in each cylinder of equilibrium, thus the moment of torsion instability (moment of torsion is uprushed or bust) that motor caused when gasoline has just been got involved or straying quatity is less can be alleviated, the situation of the fluctuation of speed, in other words, balancing speed can be realized, the object of steady torque.In addition, when motor is in higher load condition, the oil mass deviation of multiple cylinder is calculated in conjunction with speed of crankshaft signal and detonation signal, and accordingly equilibrium is compensated to the oil mass in each cylinder, not only can balancing speed, steady torque, the engine knock phenomenon that also can cause roughness noise carries out Real-Time Monitoring, improves vibration noise.In addition, under instantaneous operating mode, in conjunction with the change in location trend of gas pedal, optionally the oil mass in multiple cylinder is adjusted, thus under different operating mode, ensure that rotating speed transition is mild, reduce and impact sense.
Present invention also offers a kind of automobile.Balance control system 300 between the cylinder that this automobile comprises duel fuel engine described by the above embodiment of the present invention.
According to the automobile of the embodiment of the present invention, motor be in the first load condition (in, low load condition) under time, the oil mass in each cylinder is also calculated accordingly by Real-time Obtaining speed of crankshaft signal, and obtain the oil mass deviation of the multiple cylinder of motor further, and according to oil mass deviation, the oil mass in each cylinder is compensated, with the oil mass in each cylinder of equilibrium, thus the moment of torsion instability (moment of torsion is uprushed or bust) that motor caused when gasoline has just been got involved or straying quatity is less can be alleviated, the situation of the fluctuation of speed, in other words, balancing speed can be realized, the object of steady torque.In addition, when motor is in higher load condition, the oil mass deviation of multiple cylinder is calculated in conjunction with speed of crankshaft signal and detonation signal, and accordingly equilibrium is compensated to the oil mass in each cylinder, not only can balancing speed, steady torque, the engine knock phenomenon that also can cause roughness noise carries out Real-Time Monitoring, improves vibration noise.In addition, under instantaneous operating mode, in conjunction with the change in location trend of gas pedal, optionally the oil mass in multiple cylinder is adjusted, thus under different operating mode, ensure that rotating speed transition is mild, reduce and impact sense.
In describing the invention, it will be appreciated that, term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", " outward ", " clockwise ", " counterclockwise ", " axis ", " radial direction ", orientation or the position relationship of the instruction such as " circumference " are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore limitation of the present invention can not be interpreted as.
In addition, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance or imply the quantity indicating indicated technical characteristics.Thus, be limited with " first ", the feature of " second " can express or impliedly comprise at least one this feature.In describing the invention, the implication of " multiple " is at least two, such as two, three etc., unless otherwise expressly limited specifically.
In the present invention, unless otherwise clearly defined and limited, the term such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or integral; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals or the interaction relationship of two elements, unless otherwise clear and definite restriction.For the ordinary skill in the art, above-mentioned term concrete meaning in the present invention can be understood as the case may be.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature " on " or D score can be that the first and second features directly contact, or the first and second features are by intermediary mediate contact.And, fisrt feature second feature " on ", " top " and " above " but fisrt feature directly over second feature or oblique upper, or only represent that fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " below " and " below " can be fisrt feature immediately below second feature or tiltedly below, or only represent that fisrt feature level height is less than second feature.
In the description of this specification, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, to the schematic representation of above-mentioned term not must for be identical embodiment or example.And the specific features of description, structure, material or feature can combine in one or more embodiment in office or example in an appropriate manner.In addition, when not conflicting, the feature of the different embodiment described in this specification or example and different embodiment or example can carry out combining and combining by those skilled in the art.
Although illustrate and describe embodiments of the invention above, be understandable that, above-described embodiment is exemplary, can not be interpreted as limitation of the present invention, and those of ordinary skill in the art can change above-described embodiment within the scope of the invention, revises, replace and modification.
Claims (9)
1. a balance control method between the cylinder of duel fuel engine, is characterized in that, comprise the following steps:
Obtain accelerator pedal signal;
The load condition of motor is judged according to described accelerator pedal signal;
If described motor is in the first load condition, then according to the speed of crankshaft calculated signals of motor motor multiple cylinders in the outage of oil mass; And
Outage according to the oil mass in described multiple cylinder carries out equilibrium to the oil mass in described multiple cylinder.
2. balance control method between the cylinder of duel fuel engine according to claim 1, is characterized in that, described judge the load condition of motor according to described accelerator pedal signal after, also comprise:
If described motor is in the second load condition, the outage of the oil mass in multiple cylinders of described motor is then judged according to the speed of crankshaft signal of described motor and detonation signal, wherein, the load under described first load condition is less than the load under described second load condition.
3. balance control method between the cylinder of duel fuel engine according to claim 1 and 2, is characterized in that, also comprise:
The aperture variation tendency of gas pedal is judged according to accelerator pedal signal;
Aperture variation tendency according to described gas pedal carries out equilibrium to the oil mass in described multiple cylinder.
4. balance control method between the cylinder of duel fuel engine according to claim 3, it is characterized in that, the described aperture variation tendency according to described gas pedal carries out equilibrium to the oil mass in described multiple cylinder, specifically comprises:
If the aperture of described gas pedal reduces, then according to the oil mass in the minimum cylinder of oil mass in described multiple cylinder, the oil mass in other cylinder is adjusted;
If the aperture of described gas pedal increases, then according to the oil mass in the maximum cylinder of oil mass in described multiple cylinder, the oil mass in other cylinder is adjusted.
5. a balance control system between the cylinder of duel fuel engine, is characterized in that, comprising:
Acquisition module, described acquisition module is for obtaining accelerator pedal signal;
Judge module, judge module is used for the load condition judging motor according to described accelerator pedal signal;
Computing module, described computing module is used for when described motor is in the first load condition, according to the speed of crankshaft calculated signals of motor motor multiple cylinders in the outage of oil mass; And
Balance module, described balance module is used for carrying out equilibrium according to the outage of the oil mass in described multiple cylinder to the oil mass in described multiple cylinder.
6. balance control system between the cylinder of duel fuel engine according to claim 5, it is characterized in that, described computing module is also for when described motor is in the second load condition, according to the outage of the oil mass in the speed of crankshaft signal of motor and multiple cylinders of detonation signal calculation engine, wherein, the load under described first load condition is less than the load under the second load condition.
7. balance control system between the cylinder of the duel fuel engine according to claim 5 or 6, it is characterized in that, described judge module is also for judging the aperture variation tendency of gas pedal according to accelerator pedal signal, described balance module also carries out equilibrium for the aperture variation tendency according to described gas pedal to the oil mass in described multiple cylinder.
8. balance control system between the cylinder of duel fuel engine according to claim 7, it is characterized in that, described balance module is used for when the aperture of described gas pedal reduces, according to the oil mass in the cylinder that oil mass in described multiple cylinder is minimum, oil mass in other cylinder is adjusted, and when the aperture of described gas pedal increases, according to the oil mass in the cylinder that oil mass in described multiple cylinder is maximum, oil mass in other cylinder is adjusted.
9. an automobile, is characterized in that, balance control system between the cylinder comprising the duel fuel engine as described in any one of claim 5-8.
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| CN201410177025.9A CN105020033B (en) | 2014-04-29 | 2014-04-29 | Balance control method, system and automobile between the cylinder of dual fuel engine |
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| CN201410177025.9A CN105020033B (en) | 2014-04-29 | 2014-04-29 | Balance control method, system and automobile between the cylinder of dual fuel engine |
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| CN105020033A true CN105020033A (en) | 2015-11-04 |
| CN105020033B CN105020033B (en) | 2017-10-13 |
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| CN113586261A (en) * | 2021-08-02 | 2021-11-02 | 北京工业大学 | Hydrogen/ammonia dual-fuel engine and control method |
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| CN105020033B (en) | 2017-10-13 |
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