CN101749424A - Method and device of forming engagement state of manual transmission - Google Patents

Method and device of forming engagement state of manual transmission Download PDF

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Publication number
CN101749424A
CN101749424A CN200910253534A CN200910253534A CN101749424A CN 101749424 A CN101749424 A CN 101749424A CN 200910253534 A CN200910253534 A CN 200910253534A CN 200910253534 A CN200910253534 A CN 200910253534A CN 101749424 A CN101749424 A CN 101749424A
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China
Prior art keywords
gear
strange
threshold value
neutral
shift
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Granted
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CN200910253534A
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Chinese (zh)
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CN101749424B (en
Inventor
T·P·彼得里迪斯
I·哈莱罗恩
P·G·布里托
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Ford Global Technologies LLC
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Ford Global Technologies LLC
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W20/00—Control systems specially adapted for hybrid vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
    • B60W10/06—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of combustion engines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units
    • B60W30/18—Propelling the vehicle
    • B60W30/18009—Propelling the vehicle related to particular drive situations
    • B60W30/18018—Start-stop drive, e.g. in a traffic jam
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units
    • B60W30/18—Propelling the vehicle
    • B60W30/192—Mitigating problems related to power-up or power-down of the driveline, e.g. start-up of a cold engine
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N11/00—Starting of engines by means of electric motors
    • F02N11/08—Circuits or control means specially adapted for starting of engines
    • F02N11/0814—Circuits or control means specially adapted for starting of engines comprising means for controlling automatic idle-start-stop
    • F02N11/0818—Conditions for starting or stopping the engine or for deactivating the idle-start-stop mode
    • F02N11/0833—Vehicle conditions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
    • F16H59/02—Selector apparatus
    • F16H59/04—Ratio selector apparatus
    • F16H59/044—Ratio selector apparatus consisting of electrical switches or sensors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
    • F16H59/68—Inputs being a function of gearing status
    • F16H59/70—Inputs being a function of gearing status dependent on the ratio established
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/40—Drive Train control parameters
    • B60L2240/48—Drive Train control parameters related to transmissions
    • B60L2240/486—Operating parameters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2510/00—Input parameters relating to a particular sub-units
    • B60W2510/10—Change speed gearings
    • B60W2510/1005—Transmission ratio engaged
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N2200/00—Parameters used for control of starting apparatus
    • F02N2200/08—Parameters used for control of starting apparatus said parameters being related to the vehicle or its components
    • F02N2200/0802—Transmission state, e.g. gear ratio or neutral state
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
    • F16H59/68—Inputs being a function of gearing status
    • F16H2059/6823—Sensing neutral state of the transmission
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H2312/00—Driving activities
    • F16H2312/14—Going to, or coming from standby operation, e.g. for engine start-stop operation at traffic lights
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
    • F16H59/68—Inputs being a function of gearing status
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
    • F16H63/40—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism comprising signals other than signals for actuating the final output mechanisms
    • F16H63/50—Signals to an engine or motor
    • 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
    • Y02T10/40—Engine management systems

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Automation & Control Theory (AREA)
  • Control Of Transmission Device (AREA)

Abstract

The invention relates to a method and device of forming the engagement state of a manual transmission. The invention discloses a method for determining an upper in-gear signal threshold and a lower in-gear signal threshold of a signal associated with the manual transmission 3 of a micro hybrid vehicle and coming from a magnetic PWM sensor 7. The upper in-gear signal threshold and the lower in-gear signal threshold can be used for confirming whether the manual transmission 3 is in a safe neutral state before an engine starts automatically.

Description

Set up the method and apparatus of the engagement of manual transmission
Technical field
The present invention relates to be used to confirm the method and apparatus of the engagement of manual transmission, and be specifically related to determine be assembled to the engagement of the manual transmission of micro-hybrid vehicle.
Background technique
Known micro-hybrid technology is assembled to the hand gear vehicle and makes it possible to when stationary vehicle, stops and starting and reduce fuel consumption by calling automatic motor.Can utilize different tail-off (shut down) and restart strategy, stop (SIN) and engage a gear parking (SIG) as neutral gear.In SIN and SIG configuration, such situation is arranged, promptly require the indication speed changer to be in the reliable signal of neutral gear.The launched machine management system of this signal stops-and start-up logic is as the condition that determines whether to allow tail-off or restart.This is the safety-critical requirement of being avoided the transmission system engagement causes when starting (crank) motor vehicle unintentionally to move.
In the SIN system, motor cuts out when stationary vehicle usually, and speed changer is in neutral gear and clutch pedal unclamps.In order after closing, to restart motor, be in neutral gear if detect speed changer, then the driver triggers and restarts by depressing clutch pedal usually.
If clutch and braking pedal are depressed, also might be hung on the gear by speed changer, then call SIG usually and stop, clutch keeps being depressed if braking pedal unclamps, and then calls SIG usually and restarts.
In addition, when speed changer is in neutral gear, uses restarting of to require all that system causes for SIN and SIG, thereby prevent the driver, or guarantee the comfortable of in the parking incident of prolongation operator cabin owing to low battery voltages gets into a difficult position.
Therefore, usually, the transmission neutral sensing is the basic demand of operation SIN strategy, and if utilize restarting of system's initiation, then also requirement for the SIG system.
Strong and reliable transmission neutral sensing is not the notion of implementing easily, this is owing to there is the tolerance stack/tolerance chain (tolerance chain) of mechanical part used in the speed changer, sensor and magnetic tolerance, and the combination of inexactness and external noise factor.In addition, the definition of neutral gear is not a notion intuitively.If neutral gear is defined as shifting of transmission bar swivel mount Rotary District, wherein Chuan Shu moment of torsion is zero, then adds up, measures under the situation of inexactness and NF in given tolerance, the too little usually and accurate sensing in this Rotary District.In addition, speed changer mechanical part tolerance adds up influences shift level swivel mount rotation neutral gear stop position.The rotation of shift level is moved from the zero degree rotation and is begun to measure, and zero degree is the neutral gear stop position in the certain variator.This makes the calibration fixed threshold become complicated with the border of determining any neutral gear window (neutral window) or engage a gear district (in-gear zones), and this border all is effective to all speed changers.Though can learn to grasp the difference of speed changer on the neutral gear stop position by (end of transmission-line) the zero off-set study of transmission line rear end or line of vehicles rear end (the end of vehicle-line) zero off-set of some form, but this process has been brought risk, i.e. study may not be executed correctly, perhaps when speed changer is in use changed, study can not be updated, and therefore can introduce error in the skew of grasp study.This may cause serious consequence, promptly stopping-start-up function in unexpected vehicle move, therefore must avoid.
Summary of the invention
The purpose of this invention is to provide improving one's methods and equipment of a kind of engagement of confirming manual transmission.
According to a first aspect of the invention, the method of the engagement of the manual transmission that a kind of indication has shift level is provided, the position of this shift level determines whether speed changer is in strange gear, even gear or neutral gear, wherein this method comprises provides sensor to monitor the position of shift level, supervision is from signal of sensor, for sensor signal is set up strange gear neutral gear threshold value and even gear neutral gear threshold value, if and from the signal of sensor between strange gear neutral gear threshold value and even gear neutral gear threshold value, then use this signal to be in the indication of neutral gear as speed changer.
Described shift level can be the gear shift roofbolt, and the rotational position of this gear shift roofbolt can determine whether speed changer is in strange gear, even gear or neutral gear, and this sensor can monitor the rotational position of gear shift roofbolt.
May further include strange gear mechanical tolerance and the even gear mechanical tolerance that foundation is associated with speed changer and sensor for set up strange gear neutral gear threshold value and even gear neutral gear threshold value from the signal of sensor, be established to the minimum gear shift roofbolt rotation that strange gear pushes, be established to the minimum gear shift roofbolt rotation that even gear pushes, set up strange gear and push tolerance, set up even gear and push tolerance, and use described even gear mechanical tolerance, described minimum gear shift roofbolt rotation that pushes to strange gear and described strange gear push tolerance and produce described strange gear neutral gear threshold value, and use described strange gear mechanical tolerance, described minimum gear shift roofbolt rotation that pushes to even gear and described even gear push tolerance and produce described even gear neutral gear threshold value.
Strange gear pushes threshold value and can equal to deduct strange gear to the minimum gear shift roofbolt rotation that strange gear pushes and push tolerance and deduct even gear mechanical tolerance again.
The idol gear pushes threshold value and can equal to deduct even gear to the minimum gear shift roofbolt rotation that even gear pushes and push tolerance and deduct strange gear mechanical tolerance again.
This method can further comprise determines whether strange gear mechanical tolerance pushes threshold value less than strange gear, and determine whether even gear mechanical tolerance pushes threshold value less than even gear, if and only if strange gear mechanical tolerance pushes threshold value less than strange gear, and when even gear mechanical tolerance pushes threshold value less than even gear, use the indication that is in neutral gear from the signal of sensor as speed changer.
According to a second aspect of the invention, a kind of apparatus operating of controlling the micro-hybrid vehicle is provided, this vehicle has: the motor that is connected to manual transmission drivingly, described manual transmission has shift level, and the position of described shift level determines whether described speed changer is in strange gear, even gear or neutral gear; Sensor is used to monitor the position of described shift level; Determination module out of supply, be used to receive from the signal of described sensor and provide to output signal to and stop-starter controller, wherein said determination module out of supply operationally monitors the described signal from described sensor, determine that whether described signal level is very between gear neutral gear threshold value and the even gear neutral gear threshold value, if and from the described signal of described sensor between described strange gear neutral gear threshold value and described even gear neutral gear threshold value, then export a speed changer and be in the signal of neutral gear to described stopping-starter controller.
Described shift level can be the gear shift roofbolt, and the rotational position of this gear shift roofbolt can determine whether speed changer is in strange gear, even gear or neutral gear, and this sensor can monitor the rotational position of gear shift roofbolt.
Advantage of the present invention provides the reliable indication of the engagement of speed changer, and need not production line rear end (end of line) zero off-set study.
Description of drawings
Also the present invention is described with reference to the accompanying drawings below by example, wherein:
Fig. 1 is the schematic representation according to the micro-hybrid vehicle of the embodiment of the invention;
Fig. 2 A is the part figure of the transmission components of the motor vehicle shown in Fig. 1, and it illustrates the position of transmission state sensor and magnetic object;
Fig. 2 B is the schematic representation that the motion of speed changer swivel mount gear shift roofbolt is shown, and the rotational position of this speed changer swivel mount gear shift roofbolt is by transmission state sensor sensing;
Fig. 3 A is first schematic representation of swivel mount gear shift roofbolt follower;
Fig. 3 B is second schematic representation of the swivel mount gear shift roofbolt follower shown in Fig. 3 A;
Fig. 4 is that transmission state sensor and the micro-hybrid shown in Fig. 1 stops-block diagram of data stream between the startup module;
Fig. 5 is the chart that illustrates from the relation between transmission state signal of sensor and the rotation of swivel mount jack-post;
Fig. 6 illustrates the chart that the various factors of the neutral gear threshold value of speed changer shown in Fig. 1 is determined in influence;
Fig. 7 is the flow chart of the method for the engagement of speed changer shown in a kind of Fig. 1 of affirmation; And
Fig. 8 A and Fig. 8 B are the flow charts of the method for the neutral gear threshold value of speed changer shown in a kind of definite Fig. 1.
Embodiment
At first with reference to figure 1-5, it illustrates a kind of little hybrid motor vehicles 1, and it has the motor 2 that is connected to manual transmission/speed changer 3 through the clutch (not shown) drivingly.Electronic controller 4 is provided to control the operation of motor 2 and comprises and be used for stopping automatically and 2 stop of piloting engine-starter controller 6 and being used for is determined the transmission state module 5 of the serviceability of speed changer 3.
Electronic controller 4 is set to receive a large amount of inputs or the signal from sensor 9, comprise engine speed from engine speed sensor, from the car speed of vehicle speed sensor, from the clutch pedal position of pedal sensor, from the accelerator pedal position of pedal sensor, one or more from the brake pedal position of pedal sensor, and can receive information about other assemblies on the vehicle, as the charged state of battery (not shown) and the serviceability of air-conditioning unit (not shown).
From the input of the part of sensor 9 or all inputs can be stopped-starter controller 6 is used to determine when that stopping and piloting engine 2 is safe.Be appreciated that to stop-starter controller 6 and transmission state module 5 can be the parts that separate unit maybe can form single electronic controller 4, as shown in the figure.
Transmission state module 5 is set to receive the signal from the transmission state sensor 7 of the housing 3B that is connected to speed changer 3.Transmission state sensor 7 is magnetic PWM sensors and provides signal based on transmission state sensor 7 with variations of flux between the magnetic object 8 that swivel mount gear shift roofbolt 3A is associated.
Fig. 2 A illustrates typically the configuration of " H door " speed changer, and it is made of the gear shift swivel mount gear shift roofbolt 3A that is positioned at basic trnasmission housing 3B.When the speed change lever (not shown) moves forward and backward when selecting strange gear and even gear respectively, gear shift swivel mount gear shift roofbolt 3A rotation, and when speed change lever move left and right during with the plane that changes speed change lever and move therein, gear shift swivel mount gear shift roofbolt 3A moves axially.According to the configuration of speed changer 3, reverse gear can be configured to strange gear or even gear.
Magnetic object 8 is connected to gear shift swivel mount gear shift roofbolt 3A, and in illustrated example, and the rotation that transmission state sensor 7 is positioned at the outside of gearbox case (housing) 3B and detects magnetic object 8 is moved.Yet, be appreciated that transmission state sensor 7 can be installed in the case of transmission 3B.
Fig. 2 B illustrates different gears the moving of magnetic object 8 when selected.Though in this case, magnetic target object 8 is fixed on the gear shift roofbolt 3A, so that it moves with gear shift roofbolt 3A, this not necessarily and in some applications, can connect magnetic object 8 so that it only rotates and does not move axially.
In addition, in shift level mobile between engage a gear and neutral position was linear application, linear mobile and non-rotating moving can sensedly be arrived.
Fig. 3 A and Fig. 3 B illustrate follower 3C, this follower 3C rotates by the rotation of gear shift roofbolt 3A, and follower 3C has three ratchet 3E, and central ratchet is corresponding to neutral position, strange gear ratchet is positioned at neutral gear ratchet one side, and even gear ratchet is positioned at the opposite side of neutral gear ratchet.Shown in a engagement among spring-loaded spheroid 3D and the ratchet 3E, spheroid 3D directly or through support by case of transmission 3B sliding support.Be appreciated that spheroid 3D can be replaced by the spring biasing bolt with hemispherical ends.Ratchet 3E is speed changer 3 definition neutral position and engage a gear positions, particularly the top (peaks) between neutral gear ratchet and engage a gear ratchet determines whether will move into engage a gear (pushing) or enter neutral gear (not pushing) unclamping speed change lever Rear Derailleur 3, this will be described in more detail below.
Fig. 4 illustrates in greater detail speed changer 3, magnetic object 8, transmission state sensor 7, transmission state module 5 and stop-relation, particularly data stream therebetween between the startup module 6.
From speed changer 3, there is the physical connection of magnetic object 8 as can be seen and to the physical connection of transmission state sensor 7, the former shows as the mechanical connection of magnetic object 8 to gear shift roofbolt 3A, and the latter shows as the mechanical connection of transmission state sensor 7 to gearbox case 3B.
Exist flux to connect between transmission state sensor 7 and the magnetic object 8, thereby variations of flux can be by transmission state sensor 7 sensings to provide signal, the rotational position of this signal indication gear shift roofbolt 3A, and therefore indicate speed changer 3 whether to be in strange gear, even gear or neutral gear.Attention transmission state sensor 7 only can be distinguished speed changer and whether be in strange gear (as 1,3,5), even gear (as 2,4,6) or neutral gear, but can not determine speed changer 3 residing accurate gears.
Transmission state sensor 7 output indication speed changers are in the signal of strange gear or even gear or neutral gear, and the indication transmission state sensor that self produced by transmission state sensor 7 of output 7 out of order quality signal whether.That is to say that transmission state sensor 7 is intelligent sensors and has self diagnostic capability.
In Fig. 4, these signals have been divided into four inputs, but two input, a sense position signal and quality signals to transmission state module 5 are in fact only arranged.For more accurate, transmission state sensor 7 output pwm signals, this signal in scope (between 10% to 90%) or outside scope (＞90% or＜10%).When fault, transmission state sensor 7 produces extraneous signal, and therefore the physics output from transmission state sensor 7 in fact only arranged.Enter drive software in the transmission state module 5 is explained this PWM, and if PWM (＞90% or＜10%) outside scope, then enter drive software set quality signal is FAULT (fault is arranged).If pwm signal is (between 10% to 90%) in scope, then enter drive software set quality signal is OK (well).Relatively pwm signal and threshold values of transmission state module 5 then are to set whether selecteed mark of whether selected, the even gear of indication whether selected, the strange gear of neutral gear.
The signal of the signal of the engagement of transmission state module 5 output indication speed changers 3 and the quality of this output of indication is to stopping-startup module.Notice that in practice transmission state module 5 is pwm signal and threshold values relatively, so that whether selecteed mark of whether selected, the even gear of indication whether selected, the strange gear of neutral gear to be set.
Fig. 5 illustrates the typical sensors signal of being drawn with respect to the angle rotation of gear shift swivel mount gear shift roofbolt on the x axle.The scope of the sensor signal of PWM in this case, is between 10% to 90% PWM dutycycle.When zero degree rotated, speed changer 3 was positioned at neutral gear, and then corresponding nominal sensor signal is 50%.When speed change lever moved forwardly into one of strange gear, sensor signal was reduced to below 50%, and on the contrary, when one of even gear was selected, sensor signal was increased to more than 50%.
Sensor signal outside the scope of 10%-90% is used to the super scope fault mode of transmission state sensor 7 and diagnoses with the auxiliary engine management system.Therefore, for example, 5% signal level can indicate transmission state sensor 7 that fault is arranged.
Should be appreciated that, also can arrange when transmission state sensor 7 is in neutral gear with convenient speed changer 3, corresponding nominal sensor signal is 50%, when speed change lever moves forwardly into one of strange gear, sensor signal is increased to more than 50%, and when one of even gear was selected, sensor signal was reduced to below 50%.
With reference now to Fig. 7,, it illustrates the method according to this invention 50, and it provides the indication of the engagement of speed changer 3.
After the starting, method enters step 100, wherein is that speed changer 3 is determined strange gear neutral gear threshold value and even gear neutral gear threshold value.Strange gear neutral gear threshold value is the maximum safety signal level that can guarantee to exist neutral gear on the strange gear direction, and even gear neutral gear threshold value is the maximum safety signal level that can guarantee to exist neutral gear on the even gear direction.The technology that is used for setting up these threshold values will illustrate in greater detail with reference to figure 8A and Fig. 8 B below.
After the step 100 is step 110, and wherein 5 supervision of transmission state module are from the output of transmission state sensor 7.That is to say, be provided for transmission state module 5 from the signal of transmission sensors 7.
Strange gear neutral gear threshold value and even gear neutral gear threshold value are stored in the transmission state module 5, and the signal that receives from transmission state sensor 7 by repeatedly with these threshold ratios, thereby determine that they are whether in these threshold limits.If from the signal of transmission state sensor 7 between strange gear neutral gear threshold value and even gear neutral gear threshold value, this shows that speed changer 3 is in neutral gear, or more precisely, thereby speed changer can not transmit enough moments of torsion causes the danger of vehicle 1 to move when motor 2 is restarted, and method enters step 114.
In step 114, the signal that speed changer is in neutral gear is sent to and stops-starter controller 6, thereby stops or when piloting engine any other condition of 2 satisfying, and allows to take place stopping automatically and starting of vehicle 1.
On the contrary, if from the signal of transmission state sensor 7 not between strange gear neutral gear threshold value and even gear neutral gear threshold value, this show speed changer 3 be in engage a gear or, or more precisely, thereby speed changer can transmit enough moments of torsion causes the danger of vehicle 1 to move when motor 2 is restarted, and method enters step 113.
In step 113, the signal that speed changer is in engage a gear is sent to and stops-starter controller 6, thereby under the situation of SIN micro-hybrid vehicle, prevent the automatic starting of vehicle 1, or under the situation of SIG micro-hybrid vehicle, prevent the starting of motor 2, other conditions of 2 all satisfy unless pilot engine, and break away from as clutch.
With reference now to Fig. 8 A and Fig. 8 B,, it illustrates in greater detail the method 100 that is used for determining strange neutral gear border and even neutral gear border.
After beginning, this method enters step 101, calculates the mechanical tolerance that is associated with speed changer 3 that may influence signal output here.Mechanical tolerance T MechBe the mechanical transmission tolerance that constitutes by time-independent noise, when speed changer 3 is in its neutral gear stop position, these influence of noise sensor signals and not with gear shift roofbolt rotation change.Go out mechanical tolerance T from speed changer mechanical tolerance and the NF analytical derivation that adds up thus Mech, the combined effect transmission neutral stop position of the two.If study is considered to necessary, then these are can be by the noise of zero off-set learning and mastering.T MechIn Fig. 6, draw and represent the possible range of the neutral gear stop position of speed changer 3.
This method enters step 102 then, and here nominal neutral gear window edge is defined.The general neutral gear definition of require transmitting zero moment of torsion need not be in the method, but the limitation standard that speed changer " pushes " is used to define neutral gear.
Pushing boundary is such position, if promptly motor 2 is started by starter motor, clutch pedal discharges, and shifting of transmission roofbolt 3A is in less than the displaced position that pushes boundary, then speed changer 3 will be forced to return neutral position, if but shifting of transmission roofbolt 3A is positioned at the position that pushes outside the boundary, then speed changer 3 will be " pushed " into gear and vehicle 1 and be easy to stroboscopic motion and move.
Therefore, push that boundary is regarded as secure threshold and as nominal neutral gear window edge.It will be understood by those skilled in the art that when being positioned before speed changer 3 is pushing might transmitting torque, but only under below the condition: engine running, clutch is not depressed, and the driver applies sizable power to speed change lever then.Under these conditions, vehicle 1 is suitable for going slowly.Yet, stopping-background of start-up function under, these conditions are difficult to satisfy in the incident of starting, because if motor 2 is static, need not applies big active force to speed change lever under without the situation of clutch pedal and select gear.This means that speed changer 3 will be moved through easily pushes boundary, and transmission state sensor 7 will detect this incident.Therefore after motor starts beginning soon, the driver must apply energetically speed change lever, and without clutch pedal, because the possibility that vehicle moves is minimum.In addition, in order to meet current safety standard, if acceleration is less than 0.25m/s 2, it is acceptable that vehicle 1 moves forward, and that is to say, and vehicle 1 moved in 2 seconds less than 0.5 meter, and this is enough slowly it can be made a response under the situation of not damaging Security because should move concerning the driver.
With reference to figure 6, suppose the speed changer of worst-case conditions, Δ MinPI EvenAnd Δ MinPI OddBe illustrated respectively on even gear direction and the strange gear direction and rotate to the minimum axle that may push the earliest from the neutral gear stop position.
Again with reference to figure 8A, next step is to calculate to push measurement tolerance PI on the even gear direction TOLevenWith push measurement tolerance PI on the strange gear direction TOLodd
PI TOLevenAnd PI TOLoddBe the tolerance that is made of the noise that influences sensor signal, these noises change with the rotation of gear shift roofbolt 3A, and comprise and influence Signal gradient and time-independent noise and time dependent noise.These noises can not be by the zero off-set learning and mastering.
PI TOLevenAnd PI TOLoddBe may push the earliest and given all NF situations under necessity buffering between the precision of 7 energy measurements of transmission state sensor.
This method enters step 104 then, and this step is to determine whether to require the zero off-set study of production line rear end or can not use the inspection that need not zero off-set study from the signal of transmission state sensor 7.
If
T mech＜(Δ minPI even-PI TOLeven)/2
With
T mech＜(Δ minPI odd-PI TOLodd)/2
Then can use and need not zero off-set study from the signal of transmission state sensor 7, and this method enters step 106.
Yet, if one of test in the step 104 can not be satisfied, then this method enters step 105, must use tolerance, standard and the NF that reduces speed changer 3, magnetic object 8 and transmission state sensor 7 from the signal of transmission state sensor 7 before need not the zero off-set study of production line rear end here.Reduce tolerance stack-ups (stack) and may relate to and tighten member or component specifications, perhaps reduce or eliminate external noise factor such as temperature.After step 105, this method is returned step 101, then repeating step 101 to 103 before execution in step 104 once more.
If two conditions of step 104 can not satisfy once more, show and fully to tighten member or component specifications or reduce or eliminate external noise factor such as temperature that then this method enters step 107.In step 107, this method finishes, and requires the skew study of production line rear end.Yet if the condition of step 104 satisfies, this method enters step 106.
Notice that in fact step 104 comprises the inequality condition, in fact it check neutral gear window calibration border PI EvenThreshAnd PI OddThreshDrop on by strange gear mechanical tolerance T MechoddWith even gear mechanical tolerance T Mecheven(only be shown T among Fig. 6 outside the zone that limits Mech).This is because if be not like this, and then neutral position can not accurately directly be determined from the transmission state sensor signal.
In step 106, neutral gear window edge PI EvenThreshAnd PI OddThreshCalculate with following equation:
PI EvenThresh＝Δ minPI even-PI TOLeven-T mech?odd
PI OddThresh＝Δ minPI odd-PI TOLodd-T mech?even
PI EvenThreshAnd PI OddThreshBe final safe neutral gear window edge, it is stored in the transmission state module 5, be used for and from the signal comparison of transmission state sensor 7 to determine whether speed changer 3 is in neutral gear.
That is to say, if:
PI OddThreshPosition＜the PI of＜transmission state sensor signal EvenThresh
Then the signal of neutral gear existence is sent to from transmission state module 5 and is stopped-starter controller 6, otherwise speed changer is not sent to starting-stop control 6 at the signal of neutral gear.
Generally speaking, the invention provides a kind of transmission state sensor signal of calibrating and also export the method whether the indication speed changer is in the signal of neutral gear and need not the zero off-set study of production line rear end.
Though by using PWM magnetic sensor or PLCD (the linear contactless displacement of permanent magnetism) sensor to describe the present invention, wherein PLCD uses magnet and produces the PWM output that is used for transmission state sensor (being sometimes referred to as the LVDT sensor), but should be appreciated that the displacement transducer that also can use other types, for example use magnet and produce the hall effect sensor of PWM output.And, the invention is not restricted to use the sensor that produces PWM output; The present invention can be applicable to equally use and produces variable voltage output but not the displacement transducer of PWM output signal.
It will be appreciated by those skilled in the art that, though the mode with example has been described the present invention by the one or more embodiments of reference, but the invention is not restricted to disclosed embodiment, and can under the situation of the scope of the invention that does not depart from the claim qualification, conceive one or more modifications or alternative embodiment disclosed embodiment.

Claims (9)

1. an indication has the method for engagement of the manual transmission of shift level, the position of described shift level determines whether described speed changer is in strange gear, idol gear or neutral gear, wherein this method comprises provides sensor to monitor the position of described shift level, supervision is from described signal of sensor, for set up strange gear neutral gear threshold value and even gear neutral gear threshold value from the described signal of described sensor, if between described strange gear neutral gear threshold value and described even gear neutral gear threshold value, then use described signal to be in the indication of neutral gear as described speed changer from the described signal of described sensor.
2. method according to claim 1, wherein said shift level is the gear shift roofbolt, the rotational position of described gear shift roofbolt determines whether described speed changer is in strange gear, even gear or neutral gear, and the described rotational position of the described gear shift roofbolt of described sensor monitoring.
3. method according to claim 2, wherein for set up strange gear mechanical tolerance and the even gear mechanical tolerance that strange gear neutral gear threshold value and even gear neutral gear threshold value comprise that further foundation is associated with described speed changer and described sensor from the described signal of described sensor, be established to the minimum gear shift roofbolt rotation that strange gear pushes, be established to the minimum gear shift roofbolt rotation that even gear pushes, set up strange gear and push tolerance, set up even gear and push tolerance, and use described even gear mechanical tolerance, described minimum gear shift roofbolt rotation that pushes to strange gear and described strange gear push tolerance and produce described strange gear neutral gear threshold value, and use described strange gear mechanical tolerance, described minimum gear shift roofbolt rotation that pushes to even gear and described even gear push tolerance and produce described even gear neutral gear threshold value.
4. method according to claim 3, wherein said strange gear push threshold value and equal the described minimum gear shift roofbolt rotation that pushes to strange gear and deduct described strange gear and push tolerance and deduct described even gear mechanical tolerance again.
5. method according to claim 3, wherein said even gear push threshold value and equal the described minimum gear shift roofbolt rotation that pushes to even gear and deduct described even gear and push tolerance and deduct described strange gear mechanical tolerance again.
6. method according to claim 4, wherein said even gear push threshold value and equal the described minimum gear shift roofbolt rotation that pushes to even gear and deduct described even gear and push tolerance and deduct described strange gear mechanical tolerance again.
7. according to each described method among the claim 3-6, wherein said method further comprises determines whether described strange gear mechanical tolerance pushes threshold value less than described strange gear, and determine whether described even gear mechanical tolerance pushes threshold value less than described even gear, if and only if described strange gear mechanical tolerance pushes threshold value less than described strange gear, and when described even gear mechanical tolerance pushes threshold value less than described even gear, use the indication that is in neutral gear from the described signal of described sensor as described speed changer.
8. apparatus operating of controlling the micro-hybrid vehicle, described micro-hybrid vehicle has: the motor that is connected to manual transmission drivingly, described manual transmission has shift level, and the position of described shift level determines whether described speed changer is in strange gear, even gear or neutral gear; Sensor is used to monitor the position of described shift level; Determination module out of supply, be used to receive from the signal of described sensor and provide to output signal to and stop-starter controller, wherein said determination module out of supply operationally monitors the described signal from described sensor, determine that whether described signal level is very between gear neutral gear threshold value and the even gear neutral gear threshold value, if and from the described signal of described sensor between described strange gear neutral gear threshold value and described even gear neutral gear threshold value, then export a speed changer and be in the signal of neutral gear to described stopping-starter controller.
9. equipment according to claim 8, wherein said shift level is the gear shift roofbolt, the rotational position of described gear shift roofbolt determines whether described speed changer is in strange gear, even gear or neutral gear, and the described rotational position of the described gear shift roofbolt of described sensor monitoring.
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