CN103939220A - Cylinder control systems and methods for discouraging resonant frequency operation - Google Patents
Cylinder control systems and methods for discouraging resonant frequency operation Download PDFInfo
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- CN103939220A CN103939220A CN201410028760.3A CN201410028760A CN103939220A CN 103939220 A CN103939220 A CN 103939220A CN 201410028760 A CN201410028760 A CN 201410028760A CN 103939220 A CN103939220 A CN 103939220A
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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
- F02D13/00—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing
- F02D13/02—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing during engine operation
- F02D13/06—Cutting-out cylinders
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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
- F02D13/00—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing
- F02D13/02—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing during engine operation
- F02D13/0257—Independent control of two or more intake or exhaust valves respectively, i.e. one of two intake valves remains closed or is opened partially while the other is fully opened
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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
- F02D41/14—Introducing closed-loop corrections
- F02D41/1401—Introducing closed-loop corrections characterised by the control or regulation method
- F02D2041/1433—Introducing closed-loop corrections characterised by the control or regulation method using a model or simulation of the system
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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
- F02D2200/10—Parameters related to the engine output, e.g. engine torque or engine speed
- F02D2200/101—Engine speed
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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
- F02D2200/10—Parameters related to the engine output, e.g. engine torque or engine speed
- F02D2200/1012—Engine speed gradient
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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
- F02D2200/60—Input parameters for engine control said parameters being related to the driver demands or status
- F02D2200/602—Pedal position
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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
- Y02T10/12—Improving ICE efficiencies
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
Abstract
The invention discloses cylinder control systems and methods for discouraging resonant frequency operation. The system includes a command generator module, a compensation module, and a fraction module. The command generator module generates a first command value and one of activates and deactivates intake and exhaust valves of a first cylinder of an engine based on the first command value. The compensation module generates a compensation value for a second cylinder of the engine based on a response of a model to the first command value. The fraction module determines a target value based on a torque request, the target value corresponding to a fraction of a total number of cylinders of the engine to be activated. The command generator module further: generates a second command value based on the compensation value and a difference between the target value and the first command value; and one of activates and deactivates intake and exhaust valves of the second cylinder based on the second command value.
Description
The cross reference of related application
The rights and interests of the U.S. Provisional Application of submitting in this application requirement on January 22nd, 2013 number 61/755,131.More than the full text of the disclosure content of application is incorporated to herein by reference.
The sequence number that this application relates on March 13rd, 2013 and submits to is 13/798, 451 U.S. Patent application, the sequence number that on March 13rd, 2013 submits to is 13/798, 351 U.S. Patent application, the sequence number that on March 13rd, 2013 submits to is 13/798, 586 U.S. Patent application, the sequence number that on March 13rd, 2013 submits to is 13/798, 590 U.S. Patent application, the sequence number that on March 13rd, 2013 submits to is 13/798, 536 U.S. Patent application, the sequence number that on March 13rd, 2013 submits to is 13/798, 435 U.S. Patent application, the sequence number that on March 13rd, 2013 submits to is 13/798, 471 U.S. Patent application, the sequence number that on March 13rd, 2013 submits to is 13/798, 737 U.S. Patent application, the sequence number that on March 13rd, 2013 submits to is 13/798, 701 U.S. Patent application, the sequence number that on March 13rd, 2013 submits to is 13/798, 518 U.S. Patent application, the sequence number that on March 13rd, 2013 submits to is 13/799, 129 U.S. Patent application, the sequence number that on March 13rd, 2013 submits to is 13/798, 540 U.S. Patent application, the sequence number that on March 13rd, 2013 submits to is 13/798, 574 U.S. Patent application, the sequence number that on March 13rd, 2013 submits to is 13/799, 181 U.S. Patent application, the sequence number that on March 13rd, 2013 submits to is 13/799, 116 U.S. Patent application, the sequence number that on March 13rd, 2013 submits to is 13/798, 624 U.S. Patent application, the sequence number that on March 13rd, 2013 submits to is 13/798, 384 U.S. Patent application, and the sequence number that on March 13rd, 2013 submits to is 13/798, 775 U.S. Patent application.More than whole disclosure contents of application are incorporated to herein by reference.
Technical field
This disclosure relates to explosive motor and more particularly relates to engine control system and method.
Background technique
The object that background technique provided in this article is described is to introduce on the whole the background of this disclosure.The current inventor's who mentions work-with being limited described in this background technique part ,-and in the time submitting to otherwise may not form the each side of this description of prior art, being neither also recognized as to not tacit declaration is expressly for prior art of the present invention.
Explosive motor is at combustor inner cylinder air-and-fuel mixture with driven plunger, and this produces driving torque.In the motor of some types, the air stream that enters motor can regulate by air throttle.Air throttle can be adjusted the air throttle area that increases or reduce the air stream that enters motor.Along with air throttle area change, the air stream that enters motor increases.Fuel Control System adjustment is injected the speed of fuel to required air/fuel mixture is provided and/or realizes required torque output to cylinder.Increase and offer the air of cylinder and fuel quantity and increased the torque output of motor.
In some cases, can stop using one or more cylinders of motor.Cylinder stop using can comprise stop using cylinder intake valve opening and closing and stop to cylinder fueling.Can stop using one or more cylinders for example to reduce fuel consumption, although now stop using one or more cylinders, motor can produce the amount of torque of request.
Summary of the invention
Cylinder control system comprises command generator module, compensating module and mark module.Command generator module produces the first command value, and carries out the intake valve of the first cylinder and the startup of exhaust valve of motor and one of stop using based on this first command value.Compensating module produces the offset for the second cylinder of motor based on model to the response of the first command value.Mark module is determined desired value based on torque requests, and this desired value is corresponding to the mark of the cylinder total quantity of motor to be started.Command generator module is further: based on poor second command value that produces between offset and desired value and the first command value; And carry out the intake valve of the second cylinder and the startup of exhaust valve and one of stop using based on this second command value.
Cylinder controlling method comprises: produce the first command value; Carry out the intake valve of the first cylinder and the startup of exhaust valve of motor and one of stop using based on this first command value; And based on model, the response of the first command value is produced to the offset for the second cylinder of motor.Cylinder controlling method further comprises: determine desired value based on torque requests, this desired value is corresponding to the mark of the cylinder total quantity of motor to be started; Based on poor second command value that produces between offset and desired value and the first command value; And carry out the intake valve of the second cylinder and the startup of exhaust valve and one of stop using based on this second command value.
The cylinder control system of 1. 1 kinds of vehicles of scheme, it comprises:
Command generator module, it produces the first command value, and carries out the intake valve of the first cylinder and the startup of exhaust valve of motor and one of stop using based on the first command value;
Compensating module, it produces the offset for the second cylinder of motor based on model to the response of the first command value; And
Mark module, it determines desired value based on torque requests, desired value is corresponding to the mark of the cylinder total quantity of motor to be started,
Wherein command generator module is further:
Based on poor second command value that produces between offset and desired value and the first command value; And
Carry out the intake valve of the second cylinder and the startup of exhaust valve and one of stop using based on the second command value.
The cylinder control system of scheme 2. as described in scheme 1, at least one feature of wherein said model is that the predetermined resonance frequencies based on vehicle configures.
The cylinder control system of scheme 3. as described in scheme 1, wherein said compensating module is determined velocity amplitude and accekeration based on model for the response of the first command value, and produces offset based on speed and accekeration.
The cylinder control system of scheme 4. as described in scheme 3, the product of wherein said compensating module based on velocity amplitude and the first predetermined gain determined the first resonance value, product based on accekeration and the second predetermined gain is determined the second resonance value, and determines offset based on the first and second resonance values.
The cylinder control system of scheme 5. as described in scheme 4, wherein said compensating module based on the first resonance value and the second resonance value and determine offset.
The cylinder control system of scheme 6. as described in scheme 1, it further comprises:
Totally module, it is poor that the difference between its previous value and desired value and first command value based on totally poor produces accumulative total; And
Differential mode piece, its second poor adjusted value that produces based on adding up between poor and offset,
Wherein command generator module produces the second command value based on adjusted value.
The cylinder control system of scheme 7. as described in scheme 6, wherein said differential mode piece is determined adjusted value based on the poor offset that deducts of accumulative total.
The cylinder control system of scheme 8. as described in scheme 6, wherein said command generator module relatively produces the second command value based on adjusted value and predetermined value.
The cylinder control system of scheme 9. as described in scheme 6, wherein said command generator module:
In the time that adjusted value is less than predetermined value, the second command value is set to the first value, and the second command value is set to the second value in the time that adjusted value is not less than predetermined value;
In the time that the second command value is set to the first value, intake valve and the exhaust valve of second cylinder of stopping using; And
In the time that the second command value is set to the second value, start intake valve and the exhaust valve of the second cylinder.
The cylinder control system of scheme 10. as described in scheme 1, the wherein said mark module further predetermined peak torque based on motor is determined desired value.
11. 1 kinds of cylinder controlling methods for vehicle of scheme, it comprises:
Produce the first command value;
Carry out the intake valve of the first cylinder and the startup of exhaust valve of motor and one of stop using based on the first command value;
Based on model, the response of the first command value is produced to the offset for the second cylinder of motor;
Determine desired value based on torque requests, desired value is corresponding to the mark of the cylinder total quantity of the motor that needs to be started;
Based on poor second command value that produces between offset and desired value and the first command value; And
Carry out the intake valve of the second cylinder and the startup of exhaust valve and one of stop using based on the second command value.
The cylinder controlling method of scheme 12. as described in scheme 11, at least one feature of wherein said model is that the predetermined resonance frequencies based on vehicle configures.
The cylinder controlling method of scheme 13. as described in scheme 11, it further comprises:
Determine velocity amplitude and accekeration based on model for the response of the first command value; And
Produce offset based on speed and accekeration.
The cylinder controlling method of scheme 14. as described in scheme 13, it further comprises:
Product based on velocity amplitude and the first predetermined gain is determined the first resonance value;
Product based on acceleration figure and the second predetermined gain is determined the second resonance value; And
Determine offset based on the first and second resonance values.
The cylinder controlling method of scheme 15. as described in scheme 14, it further comprises:
Based on the first and second resonance values and determine offset.
The cylinder controlling method of scheme 16. as described in scheme 11, it further comprises:
It is poor that difference between previous value and desired value and the first command value based on totally poor produces accumulative total;
Based on the second poor adjusted value that produces adding up between poor and offset; And
Produce the second command value based on adjusted value.
The cylinder controlling method of scheme 17. as described in scheme 16, it further comprises:
Determine adjusted value based on the poor offset that deducts of accumulative total.
The cylinder controlling method of scheme 18. as described in scheme 16, it further comprises:
Relatively produce the second command value based on adjusted value and predetermined value.
The cylinder controlling method of scheme 19. as described in scheme 16, it further comprises:
In the time that adjusted value is less than predetermined value, the second command value is set to the first value, and the second command value is set to the second value in the time that adjusted value is not less than predetermined value;
In the time that the second command value is set to the first value, intake valve and the exhaust valve of second cylinder of stopping using; And
In the time that the second command value is set to the second value, start intake valve and the exhaust valve of the second cylinder.
The cylinder controlling method of scheme 20. as described in scheme 11, it further comprises that the predetermined peak torque based on motor determines desired value.
Other suitable application areas of this disclosure will become apparent from detailed description provided below.Should be understood that the scope that is intended to only be not intended to limit for purpose of illustration this disclosure with concrete example of describing in detail.
Brief description of the drawings
This disclosure will become more completely and understand from the detailed description and the accompanying drawings, in accompanying drawing:
Fig. 1 is according to the functional-block diagram of the exemplary engine system of this disclosure;
Fig. 2 is according to the functional-block diagram of the exemplary engine control system of this disclosure;
Fig. 3 is according to the functional-block diagram of the exemplary cylinder control module of this disclosure;
Fig. 4 A and 4B are the charts of the cylinder fft (FFT) of lighting figure;
Fig. 5 is according to the functional-block diagram of the exemplary cylinder control module of this disclosure; And
Fig. 6 describes to start and the flow chart of inactive illustrative methods according to the control cylinder of this disclosure.
Embodiment
Explosive motor combustor inner cylinder air-and-fuel mixture with produce torque.In some cases, the engine control module (ECM) one or more cylinders of motor of can stopping using.ECM can stop using one or more cylinders for example to reduce fuel consumption, although now stop using one or more cylinders, motor can produce the amount of torque of request.
The amount of torque of ECM based on request determines that target lights mark.Target is lighted mark can be corresponding to the mark that should start the cylinder of realizing desired amount of torque.ECM based target light mark produce for predetermined cylinder light order future (for example, the next one) cylinder light instruction.Lighting instruction can be that instruction should start or the value of the following cylinder of stopping using.For example, in the time should starting following cylinder, ECM can light instruction and be set to 1, and in the time should stopping using following cylinder, lights instruction and be set to 0.
The ECM further instruction of lighting of the cylinder before this cylinder based on producing for lighting order produces and lights instruction.More particularly, ECM determines that target lights mark and light poor between command value with for example producing, for predetermined previous (, upper one) cylinder of lighting order last.ECM is added to produce the poor and instruction of lighting for following cylinder based on the poor generation of this accumulative total of accumulative total by the difference of determining in time.
But in some cases, the frequency that starts cylinder may approach or become the predetermined resonance frequencies that equals vehicle.The amplitude of noise and/or vibration may approach predetermined resonance frequencies and increase along with the frequency that starts cylinder.
The ECM of this disclosure is identified for the offset of following cylinder for the last response of lighting instruction of last cylinder to generation based on virtual (equipment) model.Dummy model is that the predetermined resonance frequencies based on vehicle configures.ECM adjusts accumulative total accumulative total difference poor and based on after adjusting based on offset and produces the instruction of lighting for following cylinder.In the time that lighting of following cylinder will increase resonance energy (and increasing noise and/or vibration), adjust lighting of the accumulative total following cylinder of poor obstruction based on offset, and in the time that lighting of following cylinder will be reduced resonance energy (and reducing noise and/or vibration), promote lighting of following cylinder.
Referring now to Fig. 1, present the functional-block diagram of exemplary engine system 100.The engine system 100 of vehicle comprises that combustion air/fuel mixture is with the motor 102 based on input generation torque from the driver of driver's load module 104.Air sucks in motor 102 by gas handling system 108.Gas handling system 108 can comprise intake manifold 110 and air throttle 112.Only for instance, air throttle 112 can comprise the fly valve with rotatable blade.Engine control module (ECM) 114 is controlled air throttle actuator module 116, and the aperture of air throttle actuator module 116 adjusting joint air valves 112 is to control the air-flow that enters intake manifold 110.
Be inhaled into from the air of intake manifold 110 in the cylinder of motor 102.Although motor 102 comprises multiple cylinders, for purpose of illustration, show single representative cylinder 118.Only for instance, motor 102 can comprise 2,3,4,5,6,8,10 and/or 12 cylinders.In some cases, ECM 114 can indicate optionally more inactive cylinders (further discussing as following) of cylinder actuator module 120, and this can improve fuel efficiency.
Motor 102 can operate by four stroke cycle.Four-stroke described below will be called as intake stroke, compression stroke, combustion stroke and exhaust stroke.In each rotary course of bent axle (not shown), in four strokes of the interior generation of cylinder 118 two.Therefore, must there is twice crankshaft rotating to experience whole four strokes for cylinder 118.For four stroke engine, a cycle of engine can be corresponding to twice crankshaft rotating.
In the time starting cylinder 118, be drawn in cylinder 118 by intake valve 122 in intake stroke process from the air of intake manifold 110.ECM 114 controls fuel-actuated device module 124, and fuel-actuated device module 124 fuel meterings spray to realize required air/fuel ratio.Fuel can (such as the intake valve 122 near each cylinder) be ejected in intake manifold 110 in central position or in multiple positions.In each mode of execution (not shown), fuel can be directly injected in cylinder or be ejected in the mixing chamber/port relevant to cylinder.The fuel that fuel-actuated device module 124 can stop the cylinder to being deactivated sprays.
The fuel injecting mixes with air and produces air/fuel mixture at cylinder 118.In compression stroke process, the piston (not shown) compressed air/fuel mixture in cylinder 118.Motor 102 can be compression ignition engine, and in this case, compression causes lighting of air/fuel mixture.Or motor 102 can be spark ignition engine, in this case, spark actuator module 126 is based on encouraging the spark plug 128 in cylinder 118 from the signal of lighting air/fuel mixture of ECM 114.The motor (such as homogeneous charging compressing ignition (HCCI) motor) of some types can carry out ignition by compression and spark ignition the two.The timing of spark can be specified in the time of its uppermost position (it is called as top dead center (TDC)) with respect to piston.
How long spark actuator module 126 can produce pyrophoric timing signal before or after TDC and control by specifying in.Because piston position is directly related with crankshaft rotating, so the operation of spark actuator module 126 can be synchronizeed with the position of bent axle.Spark actuator module 126 can stop spark being provided or providing spark to inactive cylinder to inactive cylinder.
In combustion stroke process, the downward driven plunger of the burning of air/fuel mixture, driving crank thus.Combustion stroke can be defined as at piston arrives TDC and piston and turn back to the time between the lowest position time of (it is called as lower dead center (BDC)).
In exhaust stroke process, piston starts move up and discharge combustion by-products by exhaust valve 130 from BDC.Combustion by-products is discharged from vehicle by vent systems 134.
Intake valve 122 can be controlled by admission cam shaft 140, and exhaust valve 130 can be controlled by exhaust cam shaft 142.In each mode of execution, multiple admission cam shafts (comprising admission cam shaft 140) can be controlled the multiple intake valves (comprising intake valve 122) for cylinder 118 and/or can control many exhaust casings intake valve of (comprising cylinder 118) (comprising intake valve 122).Similarly, multiple exhaust cam shafts (comprising exhaust cam shaft 142) can be controlled for multiple exhaust valves of cylinder 118 and/or can control for many exhaust casings exhaust valve of (comprising cylinder 118) (comprising exhaust valve 130).Although show and discussed the valve actuation based on camshaft, can implement camless valve actuator.
Cylinder actuator module 120 can be by the cylinder 118 of stopping using of opening of forbidding intake valve 122 and/or exhaust valve 130.The time of opening intake valve 122 can change with respect to piston TDC by intake cam phase discriminator 148.The time of opening exhaust valve 130 can change with respect to piston TDC by exhaust cam phaser 150.Phase discriminator actuator module 158 can be based on control intake cam phase discriminator 148 and exhaust cam phaser 150 from the signal of ECM 114.In the time implementing, lift range variable (not shown) also can be controlled by phase discriminator actuator module 158.In each other mode of executions, intake valve 122 and/or exhaust valve 130 can be by the actuator controls except camshaft, such as electromechanical actuator, electric liquid actuator, electromagnetic actuators etc.
Engine system 100 can comprise the supercharging equipment that forced air is provided to intake manifold 110.For example, Fig. 1 illustrates the turbosupercharger of exhaust-driven turbo machine 160-1 comprising by flowing through vent systems 134.This turbosupercharger also comprises the compressor 160-2 that is driven and compressed the air in introducing air throttle 112 by turbo machine 160-1.In each mode of execution, can compress from the air of air throttle 112 and by the air of compression and be transported to intake manifold 110 by the pressurized machine (not shown) of crank-driven.
Wastegate 162 can allow to walk around turbo machine 160-1 exhaust, reduces thus the supercharging (air inlet decrement) of turbosupercharger.ECM 114 can control turbosupercharger by supercharging actuator module 164.Supercharging actuator module 164 can regulate by controlling the position of wastegate 162 supercharging of turbosupercharger.In each mode of execution, multiple turbosupercharger can be controlled by supercharging actuator module 164.Turbosupercharger can have the geometry-variable that can be controlled by supercharging actuator module 164.
Some heats in the pressurized air that is included in compression that interstage cooler (not shown) can make to produce in the time of pressurized air dissipate.Although separately show for purpose of illustration, turbo machine 160-1 can mechanically be connected each other with compressor 160-2, thereby air inlet is closely placed near hot waste gas.The pressurized air of compression can absorb heat from the parts of vent systems 134.
Engine system 100 can comprise EGR (EGR) valve 170, and waste gas is optionally rebooted back intake manifold 110 by this valve.EGR valve 170 can be positioned at the upstream of the turbo machine 160-1 of turbosupercharger.EGR valve 170 can be controlled by EGR actuator module 172.
Crank position can be measured with crankshaft position sensor 180.The temperature of engine coolant can be used engineer coolant temperature (ECT) sensor 182 to measure.ECT sensor 182 can be positioned at motor 102 or be positioned at other positions of circulating coolant, such as radiator (not shown).
Pressure in intake manifold 110 can use manifold absolute pressure (MAP) sensor 184 to measure.In each mode of execution, can measure motor vacuum (its be between the pressure in ambient pressure and intake manifold 110 poor).The mass velocity that flows into the air in intake manifold 110 can use MAF (MAF) sensor 186 to measure.In each mode of execution, maf sensor 186 can be arranged in the housing that also comprises air throttle 112.
The position of air throttle 112 can be used one or more damper position sensors (TPS) 190 to measure.The temperature that sucks the air in motor 102 can be used intake temperature (IAT) sensor 192 to measure.Engine system 100 can also comprise one or more other sensors 193.ECM 114 can be with making the control decision for engine system 100 from the signal of sensor.
ECM 114 can communicate by letter to coordinate with transmission control module 194 transferring the files in speed changer (not shown).For example, ECM 114 can reduce engine torque in the process of transferring the files.Motor 102 is exported torque by bent axle to speed changer (not shown).One or more connection devices (such as torque converter and/or one or more clutch) regulate the transmission of torque between transmission input shaft and bent axle.Torque by gear in transmission input shaft and transmission output shaft transmission.
Torque is transmitted between transmission output shaft and the wheel of vehicle by one or more differential gears, live axle etc.Motor 102, speed changer, differential gear, live axle and other transmission of torque or production part form the dynamical system of vehicle.
ECM 114 can communicate by letter to coordinate with mixing control module 196 operation of motor 102 and motor 198.Motor 198 also can be used as generator, and can be used for producing by vehicle electrical systems and use and/or for being stored in the electric energy of battery.Although only show and discuss motor 198, can implement multiple motor.In each mode of execution, each function of ECM 114, transmission control module 194 and mixing control module 196 can be integrated in one or more modules.
The each system that changes engine parameter can be called engine actuators.Each engine actuators has relevant actuator value.For example, air throttle actuator module 116 can be called engine actuators, and air throttle is opened area and can be called actuator value.In the example of Fig. 1, air throttle actuator module 116 is realized air throttle by the blade angle of adjustment air throttle 112 and is opened area.
Spark actuator module 126 also can be called engine controller, and corresponding actuator value can be with respect to cylinder TDC spark advancement amount.Other engine actuators can comprise cylinder actuator module 120, fuel-actuated device module 124, phase discriminator actuator module 158, supercharging actuator module 164 and EGR actuator module 172.For these engine actuators, actuator value can correspond respectively to cylinder activation/deactivation order, refueling rate, air inlet and exhaust cam phaser angle, boost pressure and EGR valve and open area.ECM 114 can control actuator value to make motor 102 produce required engine output torque.
Referring now to Fig. 2, present the functional-block diagram of exemplary engine control system.Torque requests module 204 can based on one or more drivers input 212(such as, accelerator pedal position, brake pedal position, cruise control inputs and/or one or more other applicable drivers input) determine torque requests 208.Torque requests module 204 can be extraly or alternatively based on one or more other torque requests (such as the torque requests being produced by ECM 114 and/or from such as transmission control module 194, mix the torque requests that other modules of the vehicle of control module 196, chassis control module etc. receive) determine torque requests 208.
Can control one or more engine actuators based on torque requests 208 and/or one or more other parameters.For example, air throttle control module 216 can be determined target air throttle aperture 220 based on torque requests 208.Air throttle actuator module 116 can based target air throttle aperture 220 be adjusted the aperture of air throttle 112.
Spark control module 224 can be determined target spark timing 228 based on torque requests 208.Spark actuator module 126 can produce spark by based target spark timing 228.Fuel control module 232 can be determined one or more target fuel adding parameters 236 based on torque requests 208.For example, target fuel adding parameter 236 can comprise fuel injection amount, for spraying fuel injecting times and each timing of spraying of this amount.Fuel-actuated device module 124 can based target fuel adding parameter 236 be carried out burner oil.
Phase discriminator control module 237 can be determined target intake cam phase discriminator angle 238 and exhaust cam phaser angle 239 based on torque requests 208.Phase discriminator actuator module 158 respectively based target intake cam phase discriminator angle 238 and exhaust cam phaser angle 239 regulates intake cam phase discriminator 148 and exhaust cam phaser 150.Pressurization control module 240 can be determined target supercharging 242 based on torque requests 208.Supercharging actuator module 164 can based target supercharging 242 be controlled supercharging equipment output supercharging.
Cylinder control module 244(is also referring to Fig. 3) produce for cylinder (" next cylinder ") predetermined light order next cylinder light instruction 248.Lighting instruction 248 instructions should start or stop using next cylinder.Only for instance, in the time should starting next cylinder, cylinder control module 244 can be arranged to the first state (for example, 1) by lighting instruction 248, and in the time should stopping using next cylinder, will light instruction 248 and be arranged to the second state (for example, 0).Light the next cylinder in order and will discuss and light instruction 248 with respect to it with respect to predetermined although light instruction 248, light instruction 248 but can produce for what be close to the second cylinder after the predetermined next cylinder of lighting order, produce the instruction of lighting for being close to the 3rd cylinder after predetermined second cylinder lighting order, or produce the instruction of lighting for another cylinder after the predetermined next cylinder of lighting order.
When lighting instruction 248 instruction should stop using next cylinder time, cylinder actuator module 120 stop using intake valve and the exhaust valve of next cylinders.When lighting instruction 248 instruction should start next cylinder time, cylinder actuator module 120 allows to open and close intake valve and the exhaust valve of next cylinder.
When lighting instruction 248 instruction should stop using next cylinder time, fuel control module 232 stops to next cylinder fueling.When lighting instruction 248 instruction should start next cylinder time, fuel control module 232 Offered target fuel adding parameters 236 are to provide fuel to next cylinder.When lighting instruction 248 instruction should start next cylinder time, spark control module 224 can provide spark to next cylinder.When lighting instruction 248 instruction should stop using next cylinder time, spark control module 224 can provide spark or stop providing spark to next cylinder.Cylinder deactivation and fuel stop (for example carrying, deceleration fuel stop carry) difference be, the intake valve and the exhaust valve that stop the cylinder that stops fueling in course of conveying at fuel stop being still opened and closed in course of conveying at fuel, and the intake valve of cylinder and exhaust valve keep closing in the time that those cylinders are deactivated.
Referring now to Fig. 3, present the functional-block diagram of the illustrative embodiments of cylinder control module 244.Mark module 304 determines that based on torque requests 208 target lights mark 308.Target is lighted mark 308 can be corresponding to the part of cylinder total quantity that should be activated the motor 102 of realizing torque requests 208.In the time that all cylinders of motor 102 are activated (and zero cylinder is deactivated), motor 102 may can be exported predetermined peak torque.It can be the value (comprising 0.0 and 1.0) between 0.0 and 1.0 that target is lighted mark 308, and mark module 304 can be lighted target mark 308 and is set to equal torque requests 208 divided by predetermined peak torque or divided by predetermined peak torque, this target is set based on torque requests 208 light mark 308.
The first Postponement module 312 receives lights instruction 248, and storage is lighted instruction 248 for a cylinder ignition event, and output previous (for example, the upper one) value of lighting instruction 248 is lighted instruction 316 as previous.Previous light that instruction 316 can be corresponding to the cylinder (" a upper cylinder ") for before the predetermined next cylinder of lighting order immediately light instruction 248.For example, when lighting instruction 248 while starting a upper cylinder according to producing for a upper cylinder, previous to light instruction 316 can be 1(the first state), and when according to produce for a upper cylinder light instruction 248 while stopping using a upper cylinder, it is previous that to light instruction 316 can be 0(the second state).Only for instance, the first Postponement module 312 can comprise FIFO (FIFO) buffer of a unit.
The first differential mode piece 320 based targets are lighted mark 308 and are previously lighted instruction 316 and determine and differ from 324.For example, the first differential mode piece 320 can be set to equal target and lights mark 308 and deduct previous instruction 316 or the based target lighted and light mark 308 and deduct and previously light instruction 316 and this is set differs from 324 differing from 324.
Accumulative total module 328 by differ from 324 with differ from 324 preceding value differ from 332 with being added to produce accumulative total.In other words, accumulative total module 328 differs from previous (for example, upper one) value of 332 by this difference and accumulative total and is added with generation and adds up to differ from 332.Accumulative total differs from 332 and is imported into the second differential mode piece 336.
Resonance compensation value 340 is also imported into the second differential mode piece 336.Below further discuss resonance compensation value 340.The second differential mode piece 336 is adjusted accumulative total based on resonance compensation value 340 and is differed from 332 to produce adjusted value.In other words, the second differential mode piece 336 based on accumulative total differ from 332 and resonance compensation value 340 determine adjusted value 344.For example, the second differential mode piece 336 can be set to adjusted value 344 to equal accumulative total and differs from 332 and deduct resonance compensation value 340 or deduct resonance compensation value 340 this adjusted value 344 is set based on totally differing from 332.
Command generator module 348 produces and lights instruction 248 for next cylinder based on adjusted value 344 and predetermined value.More particularly, command generator module 348 can be lighted instruction 248 for next cylinder based on relatively producing of adjusted value 344 and predetermined value.Only for instance, in the time that adjusted value 344 is more than or equal to predetermined value, command generator module 348 can be set to the instruction 248 of lighting for next cylinder 1(and starts next cylinder with instruction).In the time that adjusted value 344 is less than predetermined value, command generator module 348 can be set to 0(with the inactive next cylinder of instruction by the instruction 248 of lighting for next cylinder).Be set to 1 and start next cylinder with instruction and light instruction 248 and be set in 0 inactive mode of execution with the next cylinder of instruction lighting instruction 248, predetermined value can equal 1.The first Postponement module 312, the first differential mode piece 320, accumulative total module 328, the second differential mode piece 336 and command generator module 348 can jointly form and can be described as σ-δ discretizer (a sigma-delta discretizer).
Compensating module 360 produces resonance compensation value 340.The second Postponement module 364 receives to be lighted instruction 248, storage and for example, lights instruction 368 for previous (, upper one) value that instruction 248 and output lights instruction 248 of lighting of a cylinder ignition event as previous.Previous light instruction 368 can be corresponding to lighting instruction 248 for a predetermined upper cylinder of lighting order.For example, when lighting instruction 248 while starting a upper cylinder according to producing for a upper cylinder, previous to light instruction 368 can be 1(the first state), and when according to produce for a upper cylinder light instruction 248 while stopping using a upper cylinder, it is previous that to light instruction 368 can be 0(the second state).Only for instance, the second Postponement module 364 can comprise FIFO (FIFO) buffer of a unit.In each mode of execution, can omit the second Postponement module 364 and can use the previous instruction 316 of lighting.
State and the model of model module 372 based on (virtual) model produces velocity amplitude 376 and accekeration 380 to previous response of lighting instruction 368.Model can be to previously lighting the response of instruction based on model at the state of preset time.Only for instance, model can be or based on spring-mass damper model.Dynamical system feature and the predetermined resonance frequencies of the feature of this model based on vehicle determined.Velocity amplitude 376 can be corresponding to previous (model) mass velocity of lighting instruction 368 of response.Accekeration 380 can be corresponding to the previous mass acceleration of lighting instruction 368 of response.
In each mode of execution, model module 372 can carry out optionally one or more features of Renewal model based on one or more operating parameters.For example, predetermined resonance frequencies can be multiplied or change with engine speed.Therefore, model module 372 can carry out optionally one or more features of Renewal model based on engine speed.Model module 372 can and instruction generator module 348 produces and lights the identical speed of instruction 248 and determine velocity amplitude 376 and accekeration 380.For example, in each mode of execution, model module 372 can renewal speed value 376 and accekeration 380, and can there is each cylinder event (for example, the crankshaft rotating of each prearranging quatity) and all upgrade and light instruction 248 in command generator module 348.In other embodiments, model module 372 can come renewal speed value 376 and accekeration 380 by time-based speed, such as each predetermined period of process (this predetermined period is set to be shorter than two minimums possibility cycles between cylinder event).
The first gain module 384 is multiplied by the first predetermined gain to produce the first resonance value 388 by velocity amplitude 376.The second gain module 392 degree of will speed up values 380 are multiplied by the second predetermined gain to produce the second resonance value 396.The first and second predetermined gain can be adjustable and can differ from 332 and arrange based on should how adjusting energetically accumulative total, to avoid (preventions) with the operation outside the operation of predetermined resonance frequencies and promotion predetermined resonance frequencies.
Adding element module 398 by resonance compensation value 340 be set to equal the first resonance value 388 and the second resonance value 396 and or based on this with resonance compensation value 340 is set.Use startup that the effect of resonance compensation value 340 is a cylinder instantly to promote the startup of next cylinder by can not increase energy to system time, and reduce the possibility operating with predetermined resonance frequencies.On the contrary, in the time that the startup of next cylinder will increase energy to system, resonance compensation value 340 stops the startup of next cylinder, and similarly reduces the possibility with predetermined resonance frequencies operation.Similar trap (or band resistance) is provided in the generation that 340 pairs of resonance compensation values are lighted instruction 248 thereby the effect of wave filter is avoided operating with predetermined resonance frequencies.
Can find out the example that uses the effect of resonance compensation value 340 for predetermined resonance frequencies by comparison diagram 4A and 4B.Fig. 4 A comprises and wherein omits compensating module 360 and the second differential mode piece 336 and use accumulative total to differ from the chart of 332 mode of executions as adjusted value 344.Track 404 is followed the trail of first fft (FFT) of adjusted value 344, and track 408 is followed the trail of the 2nd FFT that lights instruction 248.Track 412 is followed the trail of the propagation function of problematic equipment.As shown in 416, the 2nd FFT comprises the peak value that approaches the peak value in propagation function.
Fig. 4 B comprises the chart for the mode of execution that is similar to Fig. 3 comprising compensating module 360 and the second differential mode piece 336.Track 420 is followed the trail of the FFT of adjusted value 344, and track 424 is followed the trail of the FFT that lights instruction 248.As shown in Figure 4 B, adjust these adjusted value 344 adjustment based on resonance compensation value 340 and light instruction 248 to weaken peak value.
Referring back to Fig. 3, in each mode of execution, for fear of can be using more than one predetermined resonance frequencies as target.In these mode of executions, can feature and two or more predetermined resonance frequencies based on dynamical system carry out calibrating patterns feature.
In addition or alternatively,, as in the example of Fig. 5, can implement the multiple compensating modules as compensating module 360.Fig. 5 comprises the functional-block diagram of another illustrative embodiments of cylinder control module 244.Referring now to Fig. 5, the feature based on vehicle powertrain and the first predetermined resonance frequencies are carried out the aspect of model of compensation for calibrating errors module 360.
The second compensating module 504 produces the second resonance compensation value 508.Except can based on the second predetermined resonance frequencies calibrate the model of the second compensating module 504 and the first and second predetermined gain value of being used by the second compensating module 504, the second compensating module 504 can be similar to or be identical with compensating module 360.
Adding element module 512 by final resonance compensation value 516 be set to equal resonance compensation value 340 and the second resonance compensation value 508 and or based on this with final resonance compensation value 516 is set.The second differential mode piece 336 differs from 332 based on accumulative total and deducts final resonance compensation value 516 and adjusted value 344 is set or is set to equal totally to differ from 332 and deduct final resonance compensation value 516.Although the example with two compensating modules is provided, but can implement more than two compensating modules, and adding element module 512 final resonance compensation value 516 can be set to equal the resonance compensation value that produced by each compensating module and or based on this with final resonance compensation value is set.
Referring now to Fig. 6, present and describe to control that cylinder starts and the flow chart of inactive illustrative methods.Control since 604,604, mark module 304 produces target and lights mark 308.Only for instance, mark module 304 can be lighted target mark 308 and is set to equal torque requests 208 divided by predetermined peak torque or carrys out Offered target based on torque requests 208 divided by predetermined peak torque and light mark 308.
Produce and differ from 324 at 608, the first differential mode pieces 320, and compensating module 360 produces resonance compensation value 340.The first differential mode piece 320 can be set to equal that target is lighted mark 308 and previous lighting differs from 324 or differ from 324 based on this difference setting between instruction 316 by differing from 324.Compensating module 360 is lighted instruction 368 and is produced resonance compensation value 340 based on previous.More particularly, model module 372 produces velocity amplitude 376 and accekeration 380, the first gain module 384 produces the first resonance value 388 based on velocity amplitude 376 and the first predetermined gain, and the second gain module 392 produces the second resonance value 396 based on accekeration 380 and the second predetermined gain.Adding element module 398 by resonance compensation value 340 be set to equal the first resonance value 388 and the second resonance value 396 and or based on this with resonance compensation value 340 is set.
612, accumulative total module 328 differs from 332 based on differing from 324 generation accumulative totals.Accumulative total module 328 accumulative total can be differed from 332 be set to equal to differ from 324 with accumulative total differ from 332 previous value and or based on this with accumulative total is set differs from 332.Produce adjusted value 344 at 616, the second differential mode pieces 336.The second differential mode piece 336 can be set to adjusted value 344 to equal accumulative total and differ from 332 and deduct resonance compensation value 340 or deduct resonance compensation value 340 adjusted value 344 is set based on totally differing from 332.
620, command generator module 348 determines whether modulation value 344 is less than 1(predetermined value).If 620 whether, can be set to 1(the first state for the instruction 248 of lighting of the predetermined next cylinder of lighting order in 624 command generator modules 348) with the startup of the next cylinder of instruction.628, start next cylinder and control and finish.When lighting instruction 248 instruction should start next cylinder time, cylinder actuator module 120 allows the opening and closing of intake valve and the exhaust valve of next cylinder.When lighting instruction 248 instruction should start next cylinder time, fuel control module 232 Offered target fueling parameters 236 are to provide fuel to next cylinder.When lighting instruction 248 instruction should start next cylinder time, spark control module 224 can provide spark to next cylinder.
If the 620th, true (in the time that adjusted value 344 is not less than 1), can will be set to 0(the second state for the instruction 248 of lighting of the predetermined next cylinder of lighting order in 632 command generator modules 348) stopping using with the next cylinder of instruction.636, stop using next cylinder and control finish.When lighting instruction 248 instruction should stop using next cylinder time, cylinder actuator module 120 stop using intake valve and the exhaust valve of next cylinders.When lighting instruction 248 instruction should stop using next cylinder time, fuel control module 232 stops to next cylinder fueling.When lighting instruction 248 instruction should stop using next cylinder time, spark control module 224 can provide spark or stop providing spark to next cylinder.Although control and be demonstrated and be discussed as end, Fig. 6 illustrates a controlled circulation, and for example each predetermined crank rotating amount is carried out controlled circulation.
More than describe and be in fact only illustrative and and be not intended to limit by any way this disclosure, its application or use.Can implement by various ways the extensive instruction of this disclosure.Therefore, although this disclosure comprises concrete example, the true scope of this disclosure should be so not limited, because other amendments will become apparent after research accompanying drawing, specification and following claim.In order to know object, will identify like by equal reference numbers in the accompanying drawings.As used herein, at least one in phrase A, B and C should be interpreted as meaning the logic (A or B or C) that uses nonexcludability logic OR.Should be understood that the principle in the case of not changing this disclosure, the one or more steps in a kind of method can use different order (or simultaneously) to carry out.
As used herein, term module can refer to a part for following content or comprise following content: ASIC (ASIC); Discrete circuit; Intergrated circuit; Combinational logic circuit; Field programmable gate array (FPGA); The processor (shared, special or group) of run time version; Described functional other applicable hardware componenies are provided; Or the combination of some or all above, such as system on chip.Term module can comprise the internal memory (shared, special or group) of storing the code of being carried out by processor.
As used above, term code can comprise software, firmware and/or microcode, and can refer to program, routine, function, classification and/or target.As used above, shared meaning from the some or all of codes of multiple modules of term can be used single (sharing) processor to carry out.In addition can be stored by single (sharing) internal memory from the some or all of codes of multiple modules.As used above, term group means from the some or all of codes of individual module and can carry out with processor group.In addition can store with internal memory group from the some or all of codes of individual module.
Apparatus and method described herein can partly or wholly be implemented by the performed one or more computer programs of one or more processors.Computer program comprises the processor executable being stored at least one permanent tangible computer-readable medium.Computer program can also comprise and/or depend on stored data.The non-limiting example of permanent tangible computer-readable medium comprises Nonvolatile memory, volatile ram, magnetic store and optical memory.
Claims (10)
1. a cylinder control system for vehicle, it comprises:
Command generator module, it produces the first command value, and carries out the intake valve of the first cylinder and the startup of exhaust valve of motor and one of stop using based on the first command value;
Compensating module, it produces the offset for the second cylinder of motor based on model to the response of the first command value; And
Mark module, it determines desired value based on torque requests, desired value is corresponding to the mark of the cylinder total quantity of motor to be started,
Wherein command generator module is further:
Based on poor second command value that produces between offset and desired value and the first command value; And
Carry out the intake valve of the second cylinder and the startup of exhaust valve and one of stop using based on the second command value.
2. cylinder control system as claimed in claim 1, at least one feature of wherein said model is that the predetermined resonance frequencies based on vehicle configures.
3. cylinder control system as claimed in claim 1, wherein said compensating module is determined velocity amplitude and accekeration based on model for the response of the first command value, and produces offset based on speed and accekeration.
4. cylinder control system as claimed in claim 3, the product of wherein said compensating module based on velocity amplitude and the first predetermined gain determined the first resonance value, product based on accekeration and the second predetermined gain is determined the second resonance value, and determines offset based on the first and second resonance values.
5. cylinder control system as claimed in claim 4, wherein said compensating module based on the first resonance value and the second resonance value and determine offset.
6. cylinder control system as claimed in claim 1, it further comprises:
Totally module, it is poor that the difference between its previous value and desired value and first command value based on totally poor produces accumulative total; And
Differential mode piece, its second poor adjusted value that produces based on adding up between poor and offset,
Wherein command generator module produces the second command value based on adjusted value.
7. cylinder control system as claimed in claim 6, wherein said differential mode piece is determined adjusted value based on the poor offset that deducts of accumulative total.
8. cylinder control system as claimed in claim 6, wherein said command generator module relatively produces the second command value based on adjusted value and predetermined value.
9. cylinder control system as claimed in claim 6, wherein said command generator module:
In the time that adjusted value is less than predetermined value, the second command value is set to the first value, and the second command value is set to the second value in the time that adjusted value is not less than predetermined value;
In the time that the second command value is set to the first value, intake valve and the exhaust valve of second cylinder of stopping using; And
In the time that the second command value is set to the second value, start intake valve and the exhaust valve of the second cylinder.
10. for a cylinder controlling method for vehicle, it comprises:
Produce the first command value;
Carry out the intake valve of the first cylinder and the startup of exhaust valve of motor and one of stop using based on the first command value;
Based on model, the response of the first command value is produced to the offset for the second cylinder of motor;
Determine desired value based on torque requests, desired value is corresponding to the mark of the cylinder total quantity of the motor that needs to be started;
Based on poor second command value that produces between offset and desired value and the first command value; And
Carry out the intake valve of the second cylinder and the startup of exhaust valve and one of stop using based on the second command value.
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
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| US201361755131P | 2013-01-22 | 2013-01-22 | |
| US61/755,131 | 2013-01-22 | ||
| US61/755131 | 2013-01-22 | ||
| US13/798400 | 2013-03-13 | ||
| US13/798,400 | 2013-03-13 | ||
| US13/798,400 US9382853B2 (en) | 2013-01-22 | 2013-03-13 | Cylinder control systems and methods for discouraging resonant frequency operation |
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| CN103939220B CN103939220B (en) | 2017-01-04 |
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| CN201410028760.3A Active CN103939220B (en) | 2013-01-22 | 2014-01-22 | For stoping the cylinder control system and method that resonant frequency operates |
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| DE (1) | DE102014100450B4 (en) |
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Also Published As
| Publication number | Publication date |
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| DE102014100450A1 (en) | 2014-07-24 |
| CN103939220B (en) | 2017-01-04 |
| DE102014100450B4 (en) | 2019-03-28 |
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