CN104204476A - Method and apparatus for determining the cetane number of a fuel - Google Patents
Method and apparatus for determining the cetane number of a fuel Download PDFInfo
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- CN104204476A CN104204476A CN201380018298.2A CN201380018298A CN104204476A CN 104204476 A CN104204476 A CN 104204476A CN 201380018298 A CN201380018298 A CN 201380018298A CN 104204476 A CN104204476 A CN 104204476A
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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
- F02D19/00—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
- F02D19/06—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed
- F02D19/0639—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed characterised by the type of fuels
- F02D19/0649—Liquid fuels having different boiling temperatures, volatilities, densities, viscosities, cetane or octane numbers
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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
- F02D41/0025—Controlling engines characterised by use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
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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
- F02D41/1497—With detection of the mechanical response of the engine
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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
- F02D41/1497—With detection of the mechanical response of the engine
- F02D41/1498—With detection of the mechanical response of the engine measuring engine roughness
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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
- F02D2200/021—Engine temperature
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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
- F02D2200/06—Fuel or fuel supply system parameters
- F02D2200/0602—Fuel pressure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2200/00—Input parameters for engine control
- F02D2200/02—Input parameters for engine control the parameters being related to the engine
- F02D2200/06—Fuel or fuel supply system parameters
- F02D2200/0611—Fuel type, fuel composition or fuel quality
- F02D2200/0612—Fuel type, fuel composition or fuel quality determined by estimation
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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
- F02D2200/06—Fuel or fuel supply system parameters
- F02D2200/0618—Actual fuel injection timing or delay, e.g. determined from fuel pressure drop
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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
- F02D2200/02—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
- F02D2200/1015—Engines misfires
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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
- F02D41/0002—Controlling intake air
- F02D41/0007—Controlling intake air for control of turbo-charged or super-charged engines
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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
- F02D41/0025—Controlling engines characterised by use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
- F02D41/0047—Controlling exhaust gas recirculation [EGR]
- F02D41/005—Controlling exhaust gas recirculation [EGR] according to engine operating conditions
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/04—Introducing corrections for particular operating conditions
- F02D41/047—Taking into account fuel evaporation or wall wetting
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/04—Introducing corrections for particular operating conditions
- F02D41/12—Introducing corrections for particular operating conditions for deceleration
- F02D41/123—Introducing corrections for particular operating conditions for deceleration the fuel injection being cut-off
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/30—Controlling fuel injection
- F02D41/38—Controlling fuel injection of the high pressure type
- F02D41/40—Controlling fuel injection of the high pressure type with means for controlling injection timing or duration
- F02D41/401—Controlling injection timing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/30—Controlling fuel injection
- F02D41/38—Controlling fuel injection of the high pressure type
- F02D41/40—Controlling fuel injection of the high pressure type with means for controlling injection timing or duration
- F02D41/402—Multiple injections
- F02D41/403—Multiple injections with pilot injections
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
Abstract
An engine control apparatus performs a plurality of estimations of ignition quality of fuel by using a plurality of different estimation logics corresponding one-to-one to the estimations, and performs an engine control based on a result of an estimation that indicates lowest ignition quality among the results of the estimations.
Description
Background of invention
Background technique
The fuel that diesel engine sprays by compression ignite the sprayed fuel that burns.Commercially available, diesel engine has different compositions as the light oil of fuel, and their fire behaviour is also different.The fire behaviour of fuel affects situation, motor output etc. that cutoff occurs significantly.Therefore, in order to improve output performance, fuel economy performance and the emission performance of diesel engine, must check that the fire behaviour of fuel of current use and the check result of the fire behaviour of based on fuel regulate the executive mode about the engine control of fuel injection timing and fuel injection amount etc.
Evaluate the fire behaviour as the light oil of the fuel of diesel engine by the cetane number of light oil.The cetane number of sample light oil is expressed by the percent by volume of the amount of the cetane in the mixture of cetane and alpha-methyl-naphthalene, and the mixture of described cetane and alpha-methyl-naphthalene presents the fire behaviour identical with sample light oil.
The various logic of the cetane number for inferring fuel has been proposed.For example, Japanese Patent Application No.2011-256840 (JP 2011-256840A) discloses a kind of logic, in described logic, the relation between the engine speed when rotation variation of the diesel engine based on after fuel sprays, fuel injection timing and fuel spray is inferred the cetane number of the fuel of diesel engine.
What can expect is by with different fire behaviouies of inferring logic and infer fuel.In this case, owing to inferring the difference of principle, the different logics of inferring provide the not identical result of inferring sometimes.Therefore, this may cause engine control vibration (hunting).
For example, suppose based on infer inferring of logic A provided the cetane number of fuel of current use lower infer result, and based on infer inferring of logic B provided the cetane number of fuel of current use higher infer result.In this case, implementing, based on after inferring the inferring of logic A, to implement the engine control that has used cetane number to design compared with low fuel based on imagination; On the other hand, implementing, based on after inferring the inferring of logic B, to implement the engine control that has used cetane number to design compared with high fuel based on imagination.Therefore, implement based on inferring inferring of one of logic at every turn, all will change the execution pattern of engine control, and therefore, control and become unstable.
Technical field
The present invention relates to infer the fire behaviour of fuel the result based on inferring and carry out device for controlling engine and the engine control of engine control.
Summary of the invention
The invention provides device for controlling engine and engine control, described device for controlling engine and engine control can vibrate by inhibitory control, and therefore can suitably carry out engine control, even multiple different to infer that logic infers the fire behaviour of fuel be also like this in the case of adopting.
Device for controlling engine is according to a first aspect of the invention by carrying out repeatedly inferring of fire behaviour to fuel by multiple different logics of inferring, and the result of inferring of the minimum fire behaviour of instruction based in described result of repeatedly inferring is carried out engine control, wherein, described multiple different infer repeatedly infer described in logical AND corresponding one by one.
In above-mentioned structure, when repeatedly infer provided different while inferring result, indicate multiple infer minimum fire behaviour in result infer results as the basis of carrying out engine control.Therefore, even if export the different results of inferring, also can inhibitory control vibration.In addition, that infers minimum fire behaviour in result because instruction is multiple infers result for carrying out engine control, can suitably guarantee to stop the robustness of cutoff.Therefore,, according to above-mentioned structure, even if use multiple presuming methods to infer the fire behaviour of the fuel of current use, also can vibrate by inhibitory control, and can suitably carry out engine control.
In first aspect, device for controlling engine can be based on occurring that the situation of cutoff infers that the fire behaviour of fuel, amount based on fueling are inferred the fire behaviour of fuel and the size of the engine torque that produces based on the burning by fuel is inferred the fire behaviour of fuel.
If the fire behaviour of fuel is lower, may there is cutoff.Therefore, can infer from there is the situation of cutoff the fire behaviour of the fuel of current use.In addition, after fueling, the composition of the fuel in fuel tank can change conventionally, and therefore, the fire behaviour of fuel changes.Can obtain from the amount of fueling the maximum variable quantity of the fire behaviour of fuel.Moreover, if the fire behaviour of fuel reduces, the fuel combustion of per unit mass and the engine torque that produces changes.The size of the engine torque that therefore, also can produce from the burning by fuel is inferred the fire behaviour of the fuel of current use.Therefore,, in above-mentioned structure, the size of the engine torque that the situation based on generation cutoff, the amount of fueling and the burning by fuel produce is inferred the fire behaviour of the fuel of current use.
Provide different results if repeatedly inferred, indicated the result of inferring of minimum fire behaviour to carry out engine control based on these different inferring in result.Therefore, even if provided the different results of inferring, also can inhibitory control vibration.In addition, because the result of inferring of indicating minimum fire behaviour by use is carried out engine control, so can suitably guarantee to stop the robustness of cutoff.Therefore,, according to above-mentioned structure, even if use multiple presuming methods to infer the fire behaviour of the fuel of current use, also can vibrate by inhibitory control, and can suitably carry out engine control.
Engine control according to a second aspect of the invention comprises: by carrying out repeatedly inferring of fire behaviour to fuel by multiple different logics of inferring, described multiple different infer repeatedly infer described in logical AND corresponding one by one; Carry out engine control with the result of inferring of the minimum fire behaviour of instruction based in described result of repeatedly inferring.
Brief description of the drawings
Hereinafter with reference to feature, advantage and technology and the industrial significance of brief description of the drawings exemplary embodiment of the present invention, in the accompanying drawings, identical reference character is indicated identical element, and wherein:
Fig. 1 schematically shows the general view of the total structure of device for controlling engine according to an embodiment of the invention;
Fig. 2 shows the sectional view of the structure of the lateral parts of the sparger in the diesel engine that is arranged on the described embodiment of application;
Fig. 3 shows the chart of an example of the time waveform of fuel injection rate;
Fig. 4 shows the flow chart of the processing procedure of the computer program based on the definite cetane number of torque adopting in the above-described embodiments;
Fig. 5 A shows the chart of the variation of engine speed before execution is sprayed for detection of the fuel of the cetane number of fuel and afterwards, and Fig. 5 B shows the chart of the variation of speed discrepancy before carrying out for detection of the fuel injection of cetane number and afterwards;
Fig. 6 shows the flow chart of the processing procedure of the control cetane number setting program adopting in described embodiment; With
Fig. 7 is time diagram, and it shows the cetane number detecting based on cutoff in described embodiment's device for controlling engine, based on the definite cetane number of fueling, based on the definite cetane number of torque with control an example with the variation pattern of cetane number.
Embodiment
Below, explain with reference to Fig. 1 to Fig. 7 the embodiment who wherein implements according to device for controlling engine of the present invention.Incidentally, this embodiment's Application of control device is to the diesel engine being mounted in vehicle.
As shown in Figure 1, the fuel tank 10 of applying the diesel engine of this embodiment's control apparatus is provided with fuel quantity ga(u)ge 11, and described fuel quantity ga(u)ge 11 is measured remaining fuel quantity in fuel tank 10.In addition, fuel tank 10 is connected with fuel supply passage 12, and described fuel supply passage 12 is for transmitting the fuel of diesel engine to be supplied to.The intermediate portion of fuel supply passage 12 is provided with high pressure fuel pump 13, and described high pressure fuel pump 13, from fuel tank 10 pump fuel, then pressurizes fuel and discharges the fuel having pressurizeed.The downstream end of fuel supply passage 12 is connected to the common rail 14 that keeps pressurized fuel.Rail 14 is connected with the sparger 16 for the cylinder of diesel engine altogether.Each sparger 16 is provided with fuel pressure sensor 17, and described fuel pressure sensor 17 detects the fuel pressure in sparger 16.In addition, sparger 16 is connected to return path 18, and described return path 18 is for turning back to fuel tank 10 by superfluous fuel quantity.
So the diesel engine of structure is controlled by electronic control unit 19.Electronic control unit 19 comprises microcomputer, and described microcomputer is carried out the various computings relevant with engine control.In addition, electronic control unit 19 is provided with input circlult, and described input circlult is accepted the signal input from the various sensors of the operating conditions of detection diesel engine.Fuel quantity ga(u)ge 11 and fuel pressure sensor 17 are connected to input circlult.Other sensor that is connected to input circlult comprises the accelerator pedal sensors 23 of tread-on quantity and the vehicle speed sensor 24 of detection car speed etc. that detect the air inlet pressure sensor 20 of suction pressure, the speed probe 21 that detects the rotating speed of diesel engine, the coolant temperature sensor 22 that detects the temperature of the freezing mixture of diesel engine, detection accelerator pedal.In addition, electronic control unit 19 is provided with the drive circuit for actuator, and described actuator drives the various parts of diesel engine.Drive circuit comprises the circuit of the sparger 16 for driving cylinder.
Explanation is provided for to other details of the structure of each sparger 16 of each cylinder of diesel engine.This diesel engine using electric drive sparger is as sparger 16.
As shown in Figure 2, each sparger 16 has housing 30, and described housing 30 has hollow circle tube shape.In housing 30, be furnished with needle-valve 31, described needle-valve 31 is for the above-below direction to-and-fro motion along Fig. 2.In addition, housing 30 in Fig. 2 with respect to being furnished with spring 32 in the superposed part of needle-valve 31, described spring 32 is always along the downward direction pushing needle-valve 31 in Fig. 2.
In addition, in housing 30, be formed with two fuel chambers, described two firing chambers are separated from one another by needle-valve 31, and more specifically, described two fuel chambers are to be arranged in the nozzle box 33 of relative bottom and the pressure chamber 34 that is positioned at relative top at Fig. 2 with respect to needle-valve 31 with respect to needle-valve 31 in Fig. 2.
Nozzle box 33 is provided with spray-hole 35, and described spray-hole 35 is communicated with the inside of nozzle box 33 and the outside of housing 30.Nozzle box 33 is connected with introducing path 36, and described introducing path 36 is formed in housing 30.Introduce path 36 and be connected to common rail 14 (Fig. 1).Fuel is supplied to nozzle box 33 via introducing path 36 from common rail 14.
On the other hand, pressure chamber 34 is connected to nozzle box 33 by communication paths 37, and is connected to above-mentioned return path 18 by drain passageway 38.In addition, in pressure chamber 34, be provided with valve body 40, described valve body 40 is driven by piezoelectricity (pressure-electric) actuator 39, described piezoelectric actuator 39 forms by laminated piezoelectric device, and described piezoelectric element is for example piezoelectricity type (piezoelectric) element.Thereby, by driving valve body 40 that pressure chamber 34 is optionally communicated with in communication paths 37 and drain passageway 38 one.
Fuel pressure sensor 17 as above be arranged to Fig. 2 in the top part of sparger 16 integral.Fuel pressure sensor 17 is configured for detecting the fuel pressure of introducing in path 36.
So each operation in the following manner in the sparger 16 of structure.Piezoelectric actuator 39 presents contraction state in the time not connecting driving voltage, and at described contraction state, the entire length of piezoelectric actuator 39 reduces, with the position that pressure chamber 34 is communicated with valve body 40 location with communication paths 37 and disconnects with drain passageway 38.Now, nozzle box 33 and pressure chamber 34 communicate with each other, to make two pressure in chamber substantially equal.Therefore, now, the elastic force of spring 32 makes needle-valve 31 arrive the bottom in Fig. 2, to close spray-hole 35.Therefore, now, not from sparger 16 burner oils.
On the other hand, in the time that piezoelectric actuator 39 is connected driving voltage, the entire length of piezoelectric actuator 39 increases, thereby valve body 40 is located to the position that makes pressure chamber 34 disconnect with communication paths 37 and be communicated with drain passageway 38.Now, discharge fuel from pressure chamber 34, and pressure drop in pressure chamber 34.Therefore, the pressure in nozzle box 33 becomes the pressure being greater than in pressure chamber 34.Now, due to pressure difference, the elastic force of spring 32 moves up needle-valve 31 in Fig. 2, that is, motion is closed the position of spray-hole 35 away from needle-valve 31.Therefore, now, sparger 16 burner oils.
In the embodiment who constructs as mentioned above, electronic control unit 19 is carried out the fuel injection control of diesel engine.Particularly, electronic control unit 19 carrys out the desired value (target fuel injection amount) of computing fuel emitted dose from the presumed value (control cetane number) of the cetane number of the tread-on quantity of engine speed, accelerator pedal and the fuel that uses.In addition, electronic control unit 19 comes the desired value of computing fuel injection timing and the desired value of duration of charge from target fuel injection amount and engine speed.Then, the desired value calculating according to these, electronic control unit 19 is applied to driving voltage the piezoelectric actuator 39 of each sparger 16, sprays thereby control fuel.
In addition, in this embodiment, combine with above-mentioned fuel injection control, the control of time waveform of fuel injection rate (time per unit spray fuel quantity) of electronic control unit 19 based on implemented to form each sparger 16 by the detected fuel pressure of fuel pressure sensor 17 that is provided for each sparger 16.This control is carried out in the following manner.
Needle-valve 31 at sparger 16 starts after spray-hole 35 promotes according to the driving voltage that is applied to piezoelectric actuator 39, and the fuel pressure in nozzle box 33 reduces gradually with the increase of the lifting capacity of needle-valve 31.Then, stop applying driving voltage, and the lifting capacity of needle-valve 31 reduces.Along with reducing of the lifting capacity of valve, the fuel pressure in nozzle box 33 raises gradually.Therefore, utilize the fuel pressure that detected by the fuel pressure sensor 17 of sparger 16, can determine clearly that timing (valve is opened to drive and started timing Tos), fuel injection rate that needle-valve 31 starts to promote become timing (fuel injection rate reduces to start timing Tcs) that maximum timing (reaching the timing Toe of maximum injection rate), fuel injection rate start to reduce and the timing (reaching the timing Tce of minimum lift) of needle-valve 31 end liftings.Then,, from these determined timings, can obtain the time waveform of fuel injection rate as shown in Figure 3.From this waveform, can check the actual state that fuel sprays with very high degree of accuracy.Incidentally, in this embodiment, electronic control unit 19 obtains the variance ratio (time-derivative of fuel pressure) of the fuel pressure in each sparger 16, and obtains above-mentioned timing based on this variance ratio.
In addition, in this embodiment, electronic control unit 19 is inferred the cetane number of the fuel of current use,, infers the fire behaviour of fuel that is.Then,, according to inferring result, the mode of fuel injection timing, control fuel injection amount, control EGR amount, control supercharging rate etc. is controlled in electronic control unit 19 adjustings.This has improved output performance, fuel economy performance and the emission performance of diesel engine.For example, when inferring out the cetane number of fuel of current use when lower, electronic control unit 19 changes the mode of controlling, for example increase the execution number of times of pilot injection or increase pilot injection amount, make the timing of pilot injection and the timing advance of main injection, reduce EGR amount, improve supercharging rate etc., to suppress by the caused cutoff of the lower fire behaviour of fuel.
In this embodiment's device for controlling engine, by the cetane number of inferring logic and infer fuel with three.Infer that logic is that cetane number of fuel based on cutoff is inferred, cetane number of fuel based on fueling is inferred and cetane number of fuel based on engine torque is inferred for these three.These three of detailed descriptions are inferred to logic below.
[cetane number based on cutoff is inferred], if use the fuel of cetane number lower (its fire behaviour is poor), the incidence rate of cutoff increases.Therefore, can infer from there is the situation of cutoff the cetane number of the fuel of current use.
Particularly, electronic control unit 19 detects cutoff from the variation of engine speed.Then, in the time detecting that the number of times of cutoff reaches predetermined value, the situation of electronic control unit 19 based on there is cutoff reduces the presumed value of the cetane number of fuel, that is, and and the value of the cetane number detecting based on cutoff.Incidentally, in the time of fueling, the value of the cetane number detecting based on cutoff is reset as initial value.When each fueling, detect that the number of times of cutoff is all scavenged into " 0 ".
[cetane number based on fueling is inferred], when to fuel tank 10 fueling, the propellant composition in fuel tank 10 changes, and the cetane number of fuel changes.Also can obtain from cetane number, the amount of fueling etc. of fueling fuel before the maximum value of the amplitude of variation of cetane number.
Particularly, remaining fuel quantity increases while recognizing fueling in due to fuel tank 10, be the hypothesis of the minimum fuel of cetane number in all fuel of using of expection based on added fuel, electronic control unit 19 is inferred the cetane number of the fuel after fueling.Calculate the cetane number of now inferring based on following formula (1), that is, and based on the definite cetane number Cr of fueling.In following formula (1), Fb represents before fueling remaining fuel quantity (the residual fuel amount before fueling) in fuel tank 10, Fr represents to be added to fuel quantity in fuel tank 10 (fuel quantity that fuel tank increases or the amount of fueling), and Fa represents after fueling remaining fuel quantity (the residual fuel amount after fueling) in fuel tank 10.In addition, Cb represents the cetane number presumed value (cetane number before fueling) of the fuel in the fuel tank 10 before fueling, and Cm represents the minimum value (minimum cetane number) in the cetane number of the fuel that expection uses.
Cr＝(Cb×Fb+Cm×Fr)/Fa…(1)
Incidentally, in the time recognizing fueling, calculate based on the definite cetane number of fueling.Then, the size of the engine torque producing after spraying based on fuel obtains the time point of inferring result of cetane number, and the value based on the definite cetane number of fueling is reset to initial value.
The fire behaviour of [cetane number based on engine torque is inferred] fuel is higher, and unburned fuel amount remaining after burning is just fewer, and the engine torque producing after fuel injection is just larger.Therefore, in the time meeting the following executive condition illustrating, electronic control unit 19 sprays a small amount of fuel, obtains the size of passing through the engine torque (torque producing) that sprayed a small amount of fuel combustion produces, then infers the cetane number of fuel from the size of produced torque.
Particularly, by determining that based on torque the size of torque that the processing of the computer program of cetane number produces after spraying based on fuel infers cetane number (based on the definite cetane number of torque) shown in Fig. 4.During diesel operation, in each predetermined controlled circulation time, electronic control unit 19 is repeatedly carried out the processing of this program.
In the time that the processing of this program starts, first in step S100, determine whether and meet the condition of determining the calculating of cetane number based on torque of carrying out.This executive condition is to meet the following conditions (A) to condition (C).(A) fuel cut-off while carrying out the deceleration according to the diesel engine of discontinuing the operation of accelerator operation (, trampling of accelerator pedal).(B) once the total fuel injection quantity after fuel tank 10 fuelings is more than or equal to predetermined value α upper.Incidentally, predetermined value α is configured to be greater than and can be loaded into the value that extends to the total fuel quantity the fuel channel of sparger 16 from fuel tank 10.That is, satisfy condition (B) means, after upper once fueling, the fuel in above-mentioned fuel channel is replaced by the fresh fuel of supplying with from fuel tank 10.(C) calculated by program based on the definite cetane number of torque not with the value calculating before consecutive identical pre-determined number or more times number.If calculated by program based on the definite cetane number of torque and the value previously having calculated consecutive identical pre-determined number or more times number, can think that the value based on the definite cetane number of torque calculating is from calculate and start to remain unchanged next time.Therefore, in this case, this embodiment stops calculating based on the definite cetane number of torque.Incidentally, the time point in the time fueling being detected, remove calculate keep the counting of identical number of times based on the definite cetane number of torque.
If do not meet executive condition (no), the pretreatment of working as of program finishes immediately.If meet executive condition (YES), process and advance to step S101.Then, in step S101, the timing of spraying for detection of the fuel of the cetane number of fuel based on engine speed, engineer coolant temperature and suction pressure setting.Incidentally, carry out the reason of computing fuel injection timing with engine speed, engineer coolant temperature and suction pressure as follows.
After burning, remaining unburned fuel amount changes according to fuel injection timing and fuel fire performance.If the time of fuel injection timing while early, starting to make no longer can burn to in-cylinder pressure and/or cylinder temperature reduction in the time that fuel sprays is longer.Therefore, more early, firing duration is just longer for fuel injection timing, and the rear remaining unburned fuel amount of burning is just fewer.On the other hand, fuel injection timing is evening approximately, and the above-mentioned time to no longer can burn time of starting in the time that fuel sprays is just shorter, and the endurance of burning is shorter, and therefore in cylinder remaining unburned fuel amount just more.Engine speed is higher, and the time while starting to start to reduce to in-cylinder pressure and/or cylinder temperature in the time that fuel sprays is just shorter.Therefore, in order to make combustion condition homogenization, engine speed is higher, and it is more that the timing of spraying for detection of the fuel of the cetane number of fuel need to shift to an earlier date.
In addition,, in the time that wall temperature is lower, the maximum value of the cylinder temperature in engine compresses stroke (peak value cylinder temperature) is lower.In the time that suction pressure is lower, the maximum value of the in-cylinder pressure in engine compresses stroke (peak cylinder internal pressure) is lower.Peak value cylinder temperature or peak cylinder internal pressure are lower, and the endurance of the high-temperature high-pressure state in cylinder is just shorter, and the endurance of burning is also just shorter.Therefore, in order to make combustion condition homogenization, wall temperature or suction pressure are lower, and the timing of spraying for detection of the fuel of cetane number needs in advance manyly.
Therefore, in this embodiment, to detect the cetane number of fuel and the combustion condition homogenization of the fuel that sprays in order being used in, to carry out the injection timing of fuel metering according to engine speed at that time, wall temperature at that time and suction pressure at that time.Particularly, in this embodiment, engine speed is higher, the timing of spraying for detection of the fuel of the cetane number of fuel by advance more.Equally, in this embodiment, engineer coolant temperature (its desired value that is wall temperature) is lower, the timing of spraying for detection of the fuel of the cetane number of fuel by advance more.In addition, in this embodiment, suction pressure reduces, the timing of spraying for detection of the fuel of cetane number by advance more.
After setting fuel injection timing in the above described manner, in step S102 subsequently, at the fuel of the timed injection prearranging quatity setting.Then,, in step S103, obtain the size of spraying the torque producing by described fuel.
In step S103, calculate as follows the torque producing.Electronic control unit 19 obtains engine speed in each predetermined cycle time, and obtains poor (acquisition rotation speed difference deltan NE) between obtained engine speed and the engine speed obtained previous cycle time.
Fig. 5 A shows the variation of execution for detection of engine speed before the fuel injection of the cetane number of fuel and afterwards, and Fig. 5 B shows the variation of rotation speed difference deltan NE at that time.Because execution is sprayed and produced engine torque for detection of the fuel of the cetane number of fuel, so engine speed increases or the reduction rate of engine speed reduces, rotation speed difference deltan NE is increased.The torque producing is larger, and the time-derivative value (it is corresponding with the area of the dashed area in Fig. 5 B) of the increase of rotation speed difference deltan NE is just larger.Therefore, in this embodiment, the time-derivative value of the increase of rotation speed difference deltan NE is calculated as rotation variable quantity Σ Δ NE, and the value of this rotation variable quantity Σ Δ NE is used as the desired value of produced torque.
Subsequently, in step S104, the time waveform of the fuel injection rate that the fuel of carrying out from step S102 sprays obtains natural fuel injection timing and actual fuel injection quantities, and the error of the actual value of the bid value of computing fuel injection timing and fuel injection amount and fuel injection timing and fuel injection amount (injection timing error and emitted dose error).Then,, based on injection timing error and emitted dose error, revise rotation variable quantity Σ Δ NE.This correction is to revise the amount corresponding with the variable quantity of the engine torque being caused by injection timing error and emitted dose error, and for alleviating injection timing error and emitted dose error, the cetane number of fuel is inferred the impact of result.Particularly, injection timing is larger towards the error that shifts to an earlier date side (injection timing becomes the side further shifting to an earlier date), and the torque producing is just larger, therefore reduces to a greater degree to rotate variable quantity Σ Δ NE for revising.In addition, emitted dose is larger towards the error of increase side, and the torque producing is larger, therefore reduces to a greater degree to rotate variable quantity Σ Δ NE for revising.
Subsequently, in step S105, the engine speed during based on revised rotation variable quantity Σ Δ NE and the injection of execution fuel is carried out the cetane number of inferring out of computing fuel.The microcomputer prestor of electronic control unit 19 is the cetane number of predetermined fuel and the relation of rotation variable quantity Σ Δ NE and engine speed rule of thumb.Calculating in these relation execution steps S105 based on prestor.After calculating the cetane number definite based on torque, the pretreatment of working as of program finishes.
The setting of cetane number [control with] as mentioned above, by by three different cetane number of inferring logic and infer the fuel of current use.These are inferred logic and differ from one another inferring aspect principle, and therefore sometimes produce different cetane number and infer result.In this embodiment, in order to prevent occurring even in this case controlling vibration (hunting), set in the following manner the cetane number presumed value of the fuel that is applied to engine control, that is, and control cetane number.
Set the control cetane number in this embodiment by the control shown in Fig. 6 with the processing of cetane number setting program.During diesel operation, under each predetermined controlled circulation time, repeatedly carry out the processing of this program by electronic control unit 19.
In the time that the processing of program starts, first in step S200, judge three cetane number presumed value (based on cutoff detect cetane number, based on the definite cetane number of fueling and the definite cetane number of torque) in any whether upgrade.If neither one upgrades (no) in these three presumed value, the pretreatment of working as of program finishes immediately.In this case, control is remained to currency by cetane number.
On the other hand, if any in these three cetane number presumed value upgraded (being yes in S200), by controlling the cetane number that is set as detecting based on cutoff by cetane number, based on one of the definite cetane number of fueling and the minimum based in the definite cetane number of torque,, be set as instruction and infer by three cetane number of inferring logic and providing the result of inferring of minimum cetane number in result.After this, the pretreatment of working as of program finishes.
The operation of above-described embodiment is described with reference to Fig. 7 now.Fig. 7 shows the cetane number detecting based on cutoff in this embodiment's device for controlling engine, based on the definite cetane number of fueling, based on the definite cetane number of torque and control the example with the variation pattern of cetane number.
Until time t1, based on the definite cetane number of torque be all the cetane number detecting based on cutoff, based on fueling definite cetane number and based on torque the minimum value in definite cetane number.Therefore,, during the time period before time t1, the value based on the definite cetane number of torque is set to the value of controlling by cetane number.
When at time t1 fueling, value based on the definite cetane number of fueling is updated, and the value of the cetane number definite based on fueling is become be less than the value (it was the minimum value in the cetane number presumed value of fuel before this time point) of the cetane number definite based on torque.Therefore,, since time t1, the value based on the definite cetane number of fueling is set to the value of controlling by cetane number.
Then, at time t2, meet above-mentioned executive condition, and engine torque based on producing by the burning of fuel is inferred the cetane number (calculating based on the definite cetane number of torque) of fuel.Infer in process at this, be calculated as identically with the value calculating before based on the definite cetane number of torque, and therefore, the value based on the definite cetane number of torque is constant.According to the value based on the definite cetane number of torque that now calculates, at time t1 because the value based on the definite cetane number of fueling that fueling upgrades is reset as initial value.As a result, the value based on the definite cetane number of fueling becomes the value that is greater than the cetane number definite based on torque, and making based on the definite cetane number of torque is the minimum value in described three cetane number presumed value.Therefore,, since time t2, the value based on the definite cetane number of torque is set to the value of controlling by cetane number.
Then,, in the time that in the time, t3 detects cutoff, the value of the cetane number detecting based on cutoff reduces.As a result, the value of cetane number detecting based on cutoff is less than the value (its before this time point be in described three cetane number presumed value of fuel minimum) of the cetane number definite based on torque.Therefore,, since time t3, the value of the cetane number detecting based on cutoff is set to the value of controlling by cetane number.
After this,, when at time t4 fueling, the value based on the definite cetane number of fueling is updated.On the other hand, in response to fueling, the value of the cetane number detecting based on cutoff is reset as initial value.Result, value based on the definite cetane number of fueling becomes and is less than the value of the cetane number detecting based on cutoff and the value based on the definite cetane number of torque, make since time t4, the value based on the definite cetane number of fueling of current renewal is set to the value of controlling by cetane number.
Then, at time t5, meet above-mentioned executive condition, and carry out the processing of calculating based on the definite cetane number of torque.In this computing, calculate based on the definite cetane number of torque identical with the value previously calculating.According to the value based on the definite cetane number of torque now calculating, because value that upgrade at time t4 fueling, based on the definite cetane number of fueling is reset as initial value.Therefore, result, the value based on the definite cetane number of fueling becomes the value that is greater than the cetane number definite based on torque, and the value that makes the cetane number definite based on torque is minimum in described three cetane number presumed value.Therefore,, since time t5, the value based on the definite cetane number of torque is set to the value of controlling by cetane number.
Then, at time t6, again meet executive condition, and again carry out the processing of calculating based on the definite cetane number of torque.As a result, the value based on the definite cetane number of torque increases.Therefore,, since time t6, the value of the increase based on the definite cetane number of torque is set to the value of controlling by cetane number.
According to the device for controlling engine of above-described embodiment, can realize following effect.In described embodiment, be set to instruction and use the presumed value of the minimum cetane number of of each different presumed value of inferring three cetane number that logic obtains (detect based on cutoff cetane number, based on the definite cetane number of fueling with based on the definite cetane number of torque) by cetane number for the control of engine control.Therefore, even if the presumed value of the cetane number of fuel differs from one another, also can inhibitory control vibration.In addition, due to the presumed value of the minimum cetane number of in the presumed value of the multiple cetane number of instruction, so can guarantee certain robustness, to stop because fuel cause cutoff compared with low fire behaviour.Therefore, according to this embodiment, even in the case of using multiple presuming methods to infer the fire behaviour of fuel of current use, also can vibrate by inhibitory control, and suitably carry out engine control.
In described embodiment, if based on the definite cetane number of torque continuously pre-determined number be calculated as identical value, stop further carrying out the detection based on the definite cetane number of torque.In the time slowing down, during fuel cut-off (during this period conventionally not burner oil), detect the cetane number definite based on torque by burner oil, therefore cause conventionally unnecessary fuel consumption and produce white cigarette.In described embodiment, the time point in the time that definite value based on the definite cetane number of torque has become basic fixing, stops detecting based on the definite cetane number of torque.Therefore, can suitably limit for detection of fuel consumption, and restriction produces the white cigarette relevant to this detection.
In described embodiment, reduce the value of the cetane number detecting based on cutoff according to the testing result of cutoff, and control is set equal to the value of the cetane number detecting based on cutoff or the little value of value of the cetane number that ratio detects based on cutoff by the value of cetane number.Then,, before fueling, keep the value reducing of this cetane number detecting based on cutoff.Therefore, in described embodiment, even in the case of the value based on the definite cetane number of fueling and/or the value based on the definite cetane number of torque larger, if occur cutoff, control is set for less by cetane number.Therefore, not when being caused by the lower fire behaviour of fuel even if ought cause the combustion instability of cutoff, also can carry out engine control, make suitably to suppress cutoff.On the other hand, if carry out fueling, in response to fueling, the value of cetane number detecting based on cutoff is reset, and this is that fueling can be removed a factor of cutoff in anticipation of.Thus, can carry out and the relevant situation engine control that match, suitable with combustion stability of reality.
In this embodiment, the time waveform of the fuel injection rate that the testing result of the fuel pressure based on from sparger 16 obtains, control apparatus obtains natural fuel injection timing and actual fuel injection quantities, and revises the torque (rotation variable quantity Σ Δ NE) producing.Because the fuel injection amount of the cetane number for detection of fuel is less, so even if slight variation occurs for fuel injection timing and/or fuel injection amount, also can affect significantly the result of inferring of cetane number.But, in described embodiment, obtain exactly natural fuel injection timing and actual fuel injection quantities, and revise the result of calculation of the torque producing.Therefore, the size of the engine torque based on producing by the burning of fuel is inferred cetane number more exactly.
In described embodiment, the timing of spraying for detection of the fuel of the cetane number of fuel according to engine speed adjusting.Particularly, engine speed is higher, the timing of spraying for detection of the fuel of cetane number by advance more.The impact of inferring result of the cetane number of the variation (it depends on engine speed) that therefore, can suitably suppress produced torque on fuel.
In described embodiment, the timing of spraying for detection of the fuel of the cetane number of fuel according to wall temperature adjusting.Particularly, engineer coolant temperature (its desired value that is wall temperature) is lower, the timing of spraying for detection of the fuel of cetane number by advance more.The impact of inferring result of the cetane number of the variation (it depends on wall temperature) that therefore, can suitably suppress produced torque on fuel.
In described embodiment, the timing of spraying for detection of the fuel of the cetane number of fuel according to suction pressure adjusting.Particularly, suction pressure is lower, the timing of spraying for detection of the fuel of cetane number by advance more.The impact of inferring result of the cetane number of the variation (it depends on suction pressure) that therefore, can suitably suppress produced torque on fuel.
Incidentally, also can in the situation that carrying out following amendment, carry out above embodiment.Although in the above-described embodiments, in the fuel tank 10 based on being detected by fuel quantity ga(u)ge 11, the increase of remaining fuel quantity detects fueling, and also otherwise (for example, by the opening/closing of monitoring fuel tank cap) detects fueling.
Although in this embodiment, obtain the size of the engine torque producing by fuel combustion from the variable quantity of engine speed, but the size of the engine torque that also can produce by fuel combustion from other gain of parameter, described other parameter is for example to the increase of the relevant in-cylinder pressure of burning etc.
Although in this embodiment, the timing of spraying for detection of the fuel of the cetane number of fuel according to suction pressure adjusting, if but if can suppose that the suction pressure detecting when cetane number is that the variation of torque of generation substantially invariable or that caused by the difference of suction pressure is enough little, can omit this adjusting to fuel injection timing.
Although in this embodiment, regulate the timing of spraying for detection of the fuel of the cetane number of fuel according to wall temperature, if but if can suppose that the wall temperature detecting when cetane number is that the variation of torque of generation substantially invariable or that caused by the difference of wall temperature is enough little, can omit this adjusting to fuel injection timing.
Although in this embodiment, the timing of spraying for detection of the fuel of the cetane number of fuel according to engine speed adjusting, if but if can suppose that the engine speed detecting when cetane number is that the variation of torque of generation substantially invariable or that caused by the difference of engine speed is enough little, can omit this adjusting to fuel injection timing.
In the above-described embodiments, detect the variation of the fuel pressure in the each sparger 16 while injection for detection of the fuel of cetane number, and obtain natural fuel injection timing and actual fuel injection quantities from this testing result.Then, before the size of the engine torque producing by fuel combustion is used for to infer cetane number, according to the size of the natural fuel injection timing obtaining in the above described manner and the engine torque that produces by fuel combustion of actual fuel injection quantities correction (rotation variable quantity Σ Δ NE).But, in the case of can be with fully high accuracy controlling fuel injection amount or fuel injection timing, or in the case of the variation of the torque producing that causes due to the variation of fuel injection amount and/or fuel injection timing is enough little, can be in the situation that not needing to carry out above-mentioned correction more exactly the size of the engine torque based on producing by the burning of fuel infer the cetane number of fuel.
In the above-described embodiments, when temporarily reduce the value of the cetane number detecting based on cutoff of fuel in response to cutoff being detected, before fueling, keep this value reducing of the cetane number detecting based on cutoff, to suitably guarantee to stop the robustness of cutoff always.For example, not being to pay the utmost attention to stop the robustness of cutoff but while paying the utmost attention to other engine performance (fuel economy performance or output performance), can allow to increase the value of the cetane number detecting based on cutoff in the time stopping cutoff being detected.
In the above-described embodiments, if fuel based on the definite cetane number of torque continuously pre-determined number be calculated as identical value, no longer further detect based on the definite cetane number of torque.But, spray caused fuel consumption and spray relevant Bai Yanshi to this fuel producing when can fully ignoring for detection of the fuel of the cetane number of fuel, even based on the definite cetane number of torque continuously pre-determined number be calculated as identical value, also can continue to detect based on the definite cetane number of torque.
Although in this embodiment, in the time slowing down, during fuel cut-off, detect based on the definite cetane number of torque, also can when except deceleration, during the time period fuel cut-off, detect based on the definite cetane number of torque.
Although this embodiment adopts such sparger 16,, each in described sparger 16 includes fuel pressure sensor 17 and by operating with piezoelectric actuator 39, but also can allow to adopt the sparger that uses other to activate the sparger of (or driving) method or there is no fuel pressure sensor 17.
Next can be from above embodiment and modification technical concept that expect or that understand thereof by the effect explanation together with technical concept.Also can be in the case of fire behaviour minimum during the fuel that supply with by fueling of hypothesis has all fuel of the use considered the amount based on fueling infer the fire behaviour of fuel.
Also can be by the presumed value of the desired value of the relation calculating fire behaviour between the size of the engine torque based on producing in the burning of the fuel in order to infer engine speed while spraying of the fuel carried out, spray by above-mentioned fuel and timing that this fuel sprays, the size based on engine torque is inferred the fire behaviour of fuel.
Also can be by the desired value as engine torque size by the variable quantity being caused by fuel combustion of engine speed, the size based on engine torque is inferred the fire behaviour of fuel.
Claims (3)
1. a device for controlling engine, it is characterized in that, described device for controlling engine is by carrying out repeatedly inferring of fire behaviour to fuel by multiple different logics of inferring, and the result of inferring of the minimum fire behaviour of instruction based in described result of repeatedly inferring is carried out engine control, wherein, described multiple different infer repeatedly infer described in logical AND corresponding one by one.
2. device for controlling engine according to claim 1, wherein, described device for controlling engine is carried out inferring of fire behaviour to fuel based on there is the situation of cutoff, amount based on fueling is carried out inferring of fire behaviour to fuel, and the size of the engine torque producing based on the burning by fuel is carried out inferring of fire behaviour to fuel.
3. an engine control, is characterized in that, described engine control comprises:
By carrying out repeatedly inferring of fire behaviour to fuel by multiple different logics of inferring, described multiple different infer repeatedly infer described in logical AND corresponding one by one; With
The result of inferring of the minimum fire behaviour of instruction based in described result of repeatedly inferring is carried out engine control.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012-080960 | 2012-03-30 | ||
| JP2012080960A JP5742772B2 (en) | 2012-03-30 | 2012-03-30 | Engine control device |
| PCT/IB2013/000342 WO2013150350A1 (en) | 2012-03-30 | 2013-03-11 | Method and apparatus for determining the cetane number of a fuel |
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| Publication Number | Publication Date |
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| CN104204476A true CN104204476A (en) | 2014-12-10 |
| CN104204476B CN104204476B (en) | 2017-04-26 |
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| CN201380018298.2A Expired - Fee Related CN104204476B (en) | 2012-03-30 | 2013-03-11 | Method and apparatus for determining the cetane number of a fuel |
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| Country | Link |
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| JP (1) | JP5742772B2 (en) |
| CN (1) | CN104204476B (en) |
| BR (1) | BR112014024318B1 (en) |
| DE (1) | DE112013001833B9 (en) |
| WO (1) | WO2013150350A1 (en) |
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| JP6102855B2 (en) * | 2014-08-01 | 2017-03-29 | トヨタ自動車株式会社 | Fuel property determination device for internal combustion engine |
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- 2013-03-11 WO PCT/IB2013/000342 patent/WO2013150350A1/en active Application Filing
- 2013-03-11 CN CN201380018298.2A patent/CN104204476B/en not_active Expired - Fee Related
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Also Published As
| Publication number | Publication date |
|---|---|
| CN104204476B (en) | 2017-04-26 |
| DE112013001833B4 (en) | 2021-04-01 |
| DE112013001833T5 (en) | 2014-12-31 |
| WO2013150350A1 (en) | 2013-10-10 |
| JP5742772B2 (en) | 2015-07-01 |
| BR112014024318B1 (en) | 2021-10-13 |
| JP2013209941A (en) | 2013-10-10 |
| BR112014024318A2 (en) | 2021-06-01 |
| DE112013001833B9 (en) | 2021-06-02 |
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