WO2014006761A1 - 内燃機関の制御装置 - Google Patents
内燃機関の制御装置 Download PDFInfo
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- WO2014006761A1 WO2014006761A1 PCT/JP2012/067389 JP2012067389W WO2014006761A1 WO 2014006761 A1 WO2014006761 A1 WO 2014006761A1 JP 2012067389 W JP2012067389 W JP 2012067389W WO 2014006761 A1 WO2014006761 A1 WO 2014006761A1
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- fuel
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- change
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- combustion 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
- 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
- F02D19/0663—Details on the fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
- F02D19/0686—Injectors
- F02D19/0689—Injectors for in-cylinder direct injection
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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
- F02D19/0602—Control of components of the fuel supply system
- F02D19/0607—Control of components of the fuel supply system to adjust the fuel mass or volume flow
- F02D19/061—Control of components of the fuel supply system to adjust the fuel mass or volume flow by controlling fuel injectors
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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
- F02D19/0663—Details on the fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
- F02D19/0686—Injectors
- F02D19/0692—Arrangement of multiple injectors per combustion chamber
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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
- F02D19/08—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 simultaneously using pluralities of fuels
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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
- F02D19/08—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 simultaneously using pluralities of fuels
- F02D19/082—Premixed fuels, i.e. emulsions or blends
- F02D19/084—Blends of gasoline and alcohols, e.g. E85
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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
- F02D19/08—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 simultaneously using pluralities of fuels
- F02D19/082—Premixed fuels, i.e. emulsions or blends
- F02D19/085—Control based on the fuel type or composition
- F02D19/087—Control based on the fuel type or composition with determination of densities, viscosities, composition, concentration or mixture ratios of fuels
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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
- F02D41/008—Controlling each cylinder individually
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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
- F02D41/3094—Controlling fuel injection the fuel injection being effected by at least two different injectors, e.g. one in the intake manifold and one in the cylinder
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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
- F02D19/0602—Control of components of the fuel supply system
- F02D19/0605—Control of components of the fuel supply system to adjust the fuel pressure or 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
- 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
- F02D41/3809—Common rail control systems
- F02D2041/3881—Common rail control systems with multiple common rails, e.g. one rail per cylinder bank, or a high pressure rail and a low pressure rail
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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
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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
- F02D41/1438—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor
- F02D41/1439—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the position of the sensor
- F02D41/1441—Plural sensors
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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
Definitions
- the present invention relates to an internal combustion engine capable of using a fuel mixed with different types of fuel, for example, a fuel mixed with alcohol and hydrocarbon fuel, and a port injection valve for injecting fuel into an intake port and a fuel directly into a cylinder.
- the present invention relates to a control device for an internal combustion engine capable of injecting mixed fuel from both in-cylinder injection valves.
- an internal combustion engine for FFV that can use fuel mixed with different types of fuel is known.
- a fuel obtained by mixing an alcohol such as ethanol and a hydrocarbon fuel such as gasoline is one of the typical mixed fuels used in an internal combustion engine for FFV.
- a dual injection type that includes a port injection valve that injects fuel into the intake port and an in-cylinder injection valve that directly injects fuel into the cylinder, and can change the injection ratio of both fuel injection valves according to the operating state Internal combustion engines are also known.
- Japanese Patent Application Laid-Open No. 2006-214415 discloses a dual injection internal combustion engine for FFV that has the characteristics of both of these two types of internal combustion engines, that is, an in-cylinder injection valve and a port injection valve.
- a technique relating to an internal combustion engine capable of injecting a mixed fuel is disclosed.
- a conventional FFV internal combustion engine using an alcohol mixed fuel engine control is performed by a method according to the alcohol concentration of the fuel. Specifically, the higher the alcohol concentration of the fuel, the smaller the calorific value per unit volume. Therefore, the fuel injection amount is determined according to the alcohol concentration of the fuel. This is because if the fuel injection amount is excessive, the emission is increased, and if the fuel injection amount is insufficient, the drivability is deteriorated. Further, the higher the alcohol concentration of the fuel, the faster the combustion speed, and accordingly, the exhaust temperature tends to be lower. Therefore, the ignition timing is determined according to the alcohol concentration of the fuel. This is because the exhaust temperature is increased by retarding the ignition timing, thereby reducing emissions.
- the alcohol concentration of fuel is learned from the feedback correction amount of air-fuel ratio feedback control, and engine control is performed based on the learned alcohol concentration. For this reason, when the alcohol concentration of the fuel injected from the fuel injection valve changes with refueling, it is based on the unstable alcohol concentration until the switching from the fuel before refueling to the fuel after refueling is completed. Thus, engine control is performed. Therefore, in the conventional internal combustion engine for FFV, there is a possibility that the emission increases and the drivability deteriorates while the fuel injected from the fuel injection valve is switched from the one before refueling to the one after refueling.
- the dual-injection type internal combustion engine has an in-cylinder injection valve and a port injection valve for each cylinder, but the fuel supply lines for distributing fuel to the fuel injection valves of each cylinder are separately provided for the fuel injection valve and the port injection valve. It is piped in. Moreover, the fuel injection amounts of the two fuel injection valves are not the same, and the injection ratios of both are changed according to the operating state of the internal combustion engine.
- the above-mentioned problem is not limited to a dual injection internal combustion engine that uses an alcohol-mixed fuel.
- This is a problem that is common to all dual-injection internal combustion engines that use a mixed fuel that is a mixture of different types of fuel and that can change the mixing ratio of the different types of fuel by refueling.
- the mixing ratio of different fuels is, for example, a mixing ratio of alcohol and gasoline mixed with each other, and can be expressed as an alcohol concentration in the fuel or a gasoline concentration in the fuel.
- the present invention has been made in view of such problems, and in a dual injection internal combustion engine capable of using a fuel mixed with different fuels, an injection that may occur when the mixing ratio of the different fuels in the used fuel changes greatly.
- the purpose is to make it possible to quickly resolve the difference in fuel concentration between valves.
- the present invention provides a control device for an internal combustion engine configured to operate as follows.
- the control device normally controls the fuel injection amount of the in-cylinder injection valve and the fuel injection amount of the port injection valve in accordance with the operating state of the internal combustion engine. More specifically, the injection ratio between the fuel injection amount of the in-cylinder injection valve and the fuel injection amount of the port injection valve is determined according to the operating state of the internal combustion engine. In this case, the injection ratio is in a range including 0: 1 or 1: 0, more preferably in a range from 0: 1 to 1: 0. When the injection ratio is 0: 1, fuel injection is performed only by the port injection valve, and when the injection ratio is 1: 0, fuel injection is performed only by the in-cylinder injection valve.
- Each injection mode has advantages and disadvantages related to the operating state of the internal combustion engine. Therefore, the merit of each injection mode can be maximized by changing the injection ratio in accordance with the operating state of the internal combustion engine instead of fixing the injection ratio.
- the control device Rather than controlling the fuel injection amount of each injection valve according to the operating state, the fuel injection amount of each injection valve is controlled so that fuel is injected from both the in-cylinder injection valve and the port injection valve.
- the control device changes the mode relating to the determination of the injection ratio to a special mode different from the normal mode.
- the control device according to the present invention determines the injection ratio in a range excluding 0: 1 and 1: 0. That is, the control device according to the present invention does not allow fuel injection by only the port injection valve or fuel injection by only the in-cylinder injection valve, and always injects fuel to both fuel injection valves. By determining the injection ratio in this manner, the remaining fuel before refueling can be consumed steadily in both the fuel supply line connected to the in-cylinder injection valve and the fuel supply line connected to the port injection valve.
- the injection ratio in the special mode may be variable as long as it is in a range excluding 0: 1 and 1: 0, but 0: 1 and 1: 0 are set in order to promote consumption of residual fuel in both fuel supply lines. You may fix to the predetermined ratio except.
- the above special mode is terminated when certain conditions are met. After the end of the special mode, the injection ratio is determined again in the normal mode.
- An example of the special mode termination condition is that a certain time has elapsed since switching to the special mode.
- the special mode end condition is that the integrated fuel injection amount from the port injection valve exceeds the threshold value and the integrated fuel injection amount from the in-cylinder injection valve exceeds the threshold value.
- Each threshold value may be the same value, but it is more preferable if it is a value corresponding to the capacity of each fuel supply line.
- the mixing ratio of the different fuel in the fuel injected from the in-cylinder injection valve and the mixing ratio of the different fuel in the fuel injected from the port injection valve are both changed so that they are substantially equal.
- the special mode is terminated.
- the injection ratio is changed by a predetermined ratio or more, and the change amount of the output value of the air-fuel ratio sensor at that time is examined. If there is no difference in the mixing ratio of the different types of fuel between the fuel injected from the port injection valve and the fuel injected from the in-cylinder injection valve, the output value of the air-fuel ratio sensor will be too much before and after changing the injection ratio. It does not change.
- the fuel injected from the port injection valve and the in-cylinder injection valve It can be confirmed whether or not the mixing ratio of the different fuels to the injected fuel is substantially equal.
- the change in the mixing ratio of different fuels in the used fuel can be detected directly by the sensor.
- a concentration sensor corresponding to a specific fuel component is provided in the fuel supply system
- a change in the mixing ratio of different fuels in the used fuel can be detected from a change in the output value of the concentration sensor.
- the position where the concentration sensor is arranged is preferably just before the branch point where the fuel supply line extending from the discharge port of the fuel pump branches into a line connected to the in-cylinder injection valve and a line connected to the port injection valve.
- a concentration sensor may be disposed inside the fuel tank.
- the mixing ratio may change over time. Since the volatility differs for each fuel component, the fuel component having high volatility evaporates in the fuel tank, resulting in a change in the mixing ratio. However, such a change with time is a very slight change. For example, the degree of change differs greatly when the fuel in the fuel tank is replaced by refueling. Therefore, when a change in the mixing ratio of different fuels in the used fuel is detected by the concentration sensor, a threshold that can be distinguished from a change over time is determined in advance, and a change in output value exceeding the threshold may be detected. preferable.
- the possibility of a change in the mixing ratio of different fuels in the used fuel can be detected indirectly by detecting at least one of fuel supply to the fuel tank or at least one of it being performed, for example. .
- fuel having a different mixing ratio of different types of fuel from the remaining fuel in the fuel tank may enter the fuel tank.
- the fact that refueling has been performed can be detected from a change in the output value of the fuel remaining amount sensor, and the fact that refueling will be performed from now on can be detected by opening and closing the refueling port.
- a sensor may be arranged at the fuel filler port and detected from the output value of the sensor, or an operation of a switch or a lever for opening the fuel filler port may be detected.
- the possibility of a change in the mixing ratio of different fuels in the fuel used may be detected by detecting at least one of starting or starting of the internal combustion engine. It is extremely unlikely that the mixing ratio of different fuels in the fuel used will change rapidly during operation of the internal combustion engine. There is such a possibility when refueling is performed while the internal combustion engine is stopped, and the effect appears when the internal combustion engine is started. Therefore, by detecting at least one of the start or the start of the internal combustion engine and determining that there is a possibility of a change in the mixing ratio of the different fuels in the used fuel, refueling of the mixed fuel is performed. The influence on the operation of the internal combustion engine can be further alleviated. Whether or not the internal combustion engine has been started can be detected by confirming a start request signal used for start control of the internal combustion engine or by confirming the determination result of the start determination.
- ignition timing control and fuel injection amount control can be performed based on the mixing ratio of different fuels estimated from the output value of the concentration sensor.
- the mixing ratio of the different fuel in the injected fuel can be calculated from the feedback correction amount related to the air-fuel ratio feedback control, the ignition timing and the ignition timing and the mixing ratio of the different fuel calculated from the feedback correction amount can be calculated. It is also possible to determine the fuel injection amount.
- the injected fuel is changed from the remaining fuel before refueling. Until the fuel is completely switched to the fuel after refueling, an accurate mixing ratio of different fuels cannot be obtained from the feedback correction amount.
- a concentration sensor is provided in the fuel supply system, if there is a change in the output value of the concentration sensor, ignition is performed based on the range of the mixing ratio of different fuels estimated from the output value of the concentration sensor. It is preferable to determine the timing and the fuel injection amount.
- FIG. 1 is a diagram showing a configuration of a fuel supply system of an internal combustion engine (hereinafter referred to as an engine) to which a control device according to the present invention is applied in the present embodiment.
- the engine 2 according to the present embodiment is a V-type 6-cylinder engine having three cylinders in each of the left and right banks 4L and 4R, and a mixture of alcohol (here, ethanol) and hydrocarbon fuel (here, gasoline).
- This is an FFV engine that can use the obtained fuel, and is also a dual injection type engine that uses both port injection and in-cylinder direct injection.
- Each cylinder of the engine 2 is provided with port injection valves 28L and 28R for injecting fuel into the intake port.
- the port injection valves 28L of the three cylinders in the left bank 4L are connected to the low pressure delivery pipe 24L
- the port injection valves 28R of the three cylinders in the right bank 4R are connected to the low pressure delivery pipe 24R.
- the left and right low pressure delivery pipes 24L, 24R are both connected to the low pressure fuel pipe 22.
- pulsation dampers 26L and 26R for suppressing fuel pressure pulsation are attached to the low-pressure delivery pipes 24L and 24R, respectively.
- the low pressure fuel pipe 22 is connected to the discharge port of the feed pump (low pressure fuel pump) 12.
- the feed pump 12 is disposed inside the fuel tank 10 in which ethanol mixed gasoline as fuel is stored.
- An ethanol concentration sensor 20 for measuring the ethanol concentration of the fuel is attached to the low pressure fuel pipe 22.
- the low-pressure fuel pipe 22 is provided with a filter 18 and a pressure regulator 16.
- the pressure regulator 16 opens when the fuel pressure in the low-pressure fuel pipe 22 exceeds a predetermined pressure (for example, 400 kPa), and returns the fuel in the low-pressure fuel pipe 22 to the fuel tank 10, whereby the fuel pressure in the low-pressure fuel pipe 22 is returned. Is kept below a predetermined pressure.
- each cylinder of the engine 2 is provided with in-cylinder injection valves 40L and 40R for directly injecting fuel into the cylinder.
- the in-cylinder injection valves 40L of the three cylinders in the left bank 4L are connected to the high-pressure delivery pipe 36L
- the in-cylinder injection valves 40R of the three cylinders in the right bank 4R are connected to the high-pressure delivery pipe 36R.
- the two high-pressure delivery pipes 36L and 36R are connected by a connecting pipe 38, and one of the high-pressure delivery pipes 36R is connected to the high-pressure fuel pipe 34.
- a fuel pressure sensor 74 is attached to one high-pressure delivery pipe 36R, and a relief valve 42 is attached to the other high-pressure delivery pipe 36L.
- the relief valve 42 opens when the fuel pressure in the high pressure delivery pipes 36L, 36R exceeds a predetermined pressure (for example, 15.3 MPa), and the fuel in the high pressure delivery pipes 36L, 36R is transferred to the fuel tank 10 via the return pipe 44. By returning, the fuel pressure in the high-pressure delivery pipes 36L and 36R is suppressed to a predetermined pressure or less.
- a predetermined pressure for example, 15.3 MPa
- the high pressure fuel pipe 34 is connected to the discharge port of the high pressure fuel pump 50.
- the low-pressure fuel pipe 22 branches downstream from the mounting position of the ethanol concentration sensor 20, and the high-pressure fuel pump 50 connects the branched low-pressure fuel pipe 30 and high-pressure fuel pipe 34.
- the high-pressure fuel pump 50 is driven by a cam 58 to suck in fuel from the low-pressure fuel pipe 30, pressurize the fuel, and discharge fuel to the high-pressure fuel pipe 34.
- An electromagnetic spill valve 54 that adjusts the amount of fuel to be discharged, and a check valve 56 that opens when the pressure of the fuel discharged from the plunger 52 exceeds a predetermined pressure (for example, 60 kPa).
- a pulsation damper 32 for suppressing the pressure pulsation of the fuel is attached to the low pressure fuel pipe 30 connected to the high pressure fuel pump 50.
- the port injection valves 28L and 28R are directly driven by the engine control computer 70.
- the in-cylinder injection valves 40L and 40R and the electromagnetic spill valve 54 are driven by the engine control computer 70 via the driver circuit 72.
- Various information regarding the operating state of the engine 2 is input to the engine control computer 70 from various sensors such as the fuel pressure sensor 74 and the ethanol concentration sensor 20. Based on the sensor information and set value information stored in advance in the memory, the engine control computer 70 follows the control program stored in the ROM according to the port injection valves 28L and 28R, the in-cylinder injection valves 40L and 40R, Various actuators including the electromagnetic spill valve 54 are operated.
- the control of the engine 2 executed by the engine control computer 70 in the present embodiment includes fuel injection control performed by operating the port injection valves 28L and 28R and the in-cylinder injection valves 40L and 40R.
- this fuel injection control the injection ratio between port injection and in-cylinder direct injection is controlled.
- the engine control computer 70 usually determines the injection ratio according to the operating state of the engine 2, specifically, according to the values of various physical quantities indicating the operating state of the engine 2 such as the engine speed, load, and water temperature. To do.
- the warm state only in-cylinder direct injection is performed in the idle state, in the partial load, the injection ratio is changed according to the load, and in WOT, only in-cylinder direct injection is performed.
- the engine control computer 70 changes the injection ratio to a setting different from normal. That is, the injection ratio setting mode is changed from the normal mode to the special mode.
- the engine control computer 70 normally performs air-fuel ratio feedback control based on the output value of the air-fuel ratio sensor disposed in the exhaust passage, and calculates the ethanol concentration of the fuel from the feedback correction amount. Then, the ignition timing is determined based on the ethanol concentration obtained from the feedback correction amount, and the fuel injection amount by each fuel injection valve 40L, 40R, 28L, 28R is determined based on the ethanol concentration.
- the engine control computer 70 changes the method for determining the ignition timing and the fuel injection amount to a method different from usual. Details of the engine control executed by the engine control computer 70 in the present embodiment will be described below with reference to FIG.
- FIG. 2 is a flowchart showing an engine control routine executed by the engine control computer 70 in the present embodiment.
- the engine control computer 70 determines whether or not the ethanol concentration of the fuel in the fuel tank 10 has changed due to refueling. When refueling is not performed or when refueling is performed and fuel having the same ethanol concentration as the fuel in the fuel tank 10 is refueled, the determination result of step S2 is negative. In that case, the process by the engine control computer 70 proceeds to step S14.
- step S ⁇ b> 14 the engine control computer 70 sets the injection ratio between port injection and in-cylinder direct injection to a normal injection ratio, that is, an injection ratio according to the operating state of the engine 2. Further, the ignition timing is set according to the ethanol concentration calculated from the feedback correction amount, and the fuel injection amount is determined based on the ethanol concentration.
- Determination in step S2 is performed based on a change in the output value of the ethanol concentration sensor 20.
- the engine control computer 70 detects the change from the change in the output value of the ethanol concentration sensor 20. That is, the engine control computer 70 detects a change in the output value of the ethanol concentration sensor 20 as a change in the ethanol concentration of the fuel used, that is, a change in the mixing ratio of different fuels in the fuel used.
- the ethanol concentration of the fuel in the fuel tank 10 may change over time.
- step S2 it is determined that the ethanol concentration of the fuel used has changed due to refueling only when the amount of change in the output value of the ethanol concentration sensor 20 exceeds the threshold value in order to distinguish it from such changes over time. It is supposed to be. In this case, the process by the engine control computer 70 proceeds to step S4.
- step S4 the engine control computer 70 fixes the injection ratio of in-cylinder direct injection (DI) and port injection (PFI) to 0.5: 0.5.
- the fixed injection ratio is not changed even when the engine speed or load changes. Therefore, normally, the injection ratio of port injection to in-cylinder direct injection is set to 0: 1 in the idling operation in the warm state.
- the injection from the port injection valves 28L and 28R is also performed.
- the fuel is always injected.
- the injection ratio between port injection and in-cylinder direct injection is 1: 0 at an extremely low temperature.
- fuel is always supplied from the in-cylinder injection valves 40L and 40R. Be injected.
- the ethanol concentration calculated from the feedback correction amount is the total ethanol concentration of the fuel injected from both fuel injection valves, and the ethanol concentration in each of the fuel by direct in-cylinder injection and the fuel by port injection is individually determined. It cannot be calculated. For this reason, if the ignition timing and the fuel injection amount are determined using the ethanol concentration calculated from the feedback correction amount, the combustion may be deteriorated.
- step S4 the engine control computer 70 estimates the ethanol concentration of the fuel from the output value of the ethanol concentration sensor 20. Then, using the ethanol concentration estimated from the output value of the ethanol concentration sensor 20 and the alcohol concentration of the remaining fuel before refueling, the range of the ethanol concentration of the fuel injected from both fuel injection valves is predicted. Then, the fuel injection amount is determined based on the highest ethanol concentration within the predicted ethanol concentration range, and the base ignition timing is determined based on the ethanol concentration in order to prevent knocking due to the excessive advance angle.
- the ignition timing retardation amount is based on the lowest ethanol concentration within the expected ethanol concentration range to prevent deterioration of combustion due to over-retarding.
- the engine control computer 70 uses the output value of the ethanol concentration sensor 20 instead of the ethanol concentration calculated from the feedback correction amount related to the air-fuel ratio feedback control.
- the fuel injection amount and the ignition timing are determined based on the estimated ethanol concentration.
- the engine control computer 70 determines whether the air-fuel ratio sensor (A / F sensor) is activated. The determination is made based on, for example, the engine water temperature, the integrated value of the intake air amount after startup, the number of times of fuel injection after startup, and the like. If it is confirmed that the air-fuel ratio sensor is activated, the engine control computer 70 determines that the air-fuel ratio correction amount (A / F correction amount) calculated based on the output value of the air-fuel ratio sensor is predetermined in step S8. Determine if it is within range. The predetermined range can be determined based on the ethanol concentration estimated from the output value of the ethanol concentration sensor 20, for example. If it is confirmed that the air-fuel ratio correction amount is within the predetermined range, the processing by the engine control computer 70 proceeds to step S10.
- step S10 the engine control computer 70 changes the injection ratio between the port injection and the in-cylinder direct injection to 1: 0. That is, the fuel injection by the cylinder injection valves 40L and 40R is stopped, and only the fuel injection by the port injection valves 28L and 28R is executed.
- the engine control computer 70 determines whether or not the amount of change in the air-fuel ratio correction amount accompanying the change in the injection ratio is smaller than a predetermined value.
- the predetermined value used in this determination is set to a sufficiently small value so that the air-fuel ratio correction amount before the change of the injection ratio can be regarded as equivalent to the air-fuel ratio correction amount after the change.
- the air-fuel ratio correction amount before the change of the injection ratio corresponds to the ethanol concentration as a whole of the injected fuel including the fuel by direct in-cylinder injection and the fuel by port injection.
- the air-fuel ratio correction amount after the change of the injection ratio corresponds only to the ethanol concentration of the fuel by the port injection.
- the difference in the air-fuel ratio correction amount before and after the change of the injection ratio means that there is a difference in the ethanol concentration between the fuel by direct in-cylinder injection and the fuel by port injection. Furthermore, this means that the fuel replacement is not completely completed in the fuel supply line on either the cylinder injection valve side or the port injection valve side.
- step S12 if the change amount of the air-fuel ratio correction amount is not smaller than the predetermined value as a result of the determination in step S12, the process by the engine control computer 70 returns to step S4 again.
- the injection ratio between port injection and in-cylinder direct injection is again changed to 0.5: 0.5 and fixed.
- the fuel is again consumed in the fuel supply lines on both the in-cylinder injection port side and the port injection valve side, and the fuel replacement is promoted even in the fuel supply line that has not been replaced. .
- the engine control computer 70 repeatedly executes the processing from step S4 to step S12 until the result of the determination at step S12 becomes affirmative.
- step S12 If the result of the determination in step S12 is affirmative, it means that there is no difference in the alcohol concentration between the fuel by in-cylinder direct injection and the fuel by port injection. Furthermore, this means that the fuel replacement has been completed in the fuel supply lines on both the cylinder injection valve side and the port injection valve side. Therefore, in this case, the process by the engine control computer 70 proceeds to step S14.
- the injection ratio between port injection and in-cylinder direct injection is changed to a normal injection ratio, that is, an injection ratio according to the operating state of the engine 2. Further, the settings of the ignition timing and the fuel injection amount are changed to settings corresponding to the ethanol concentration calculated from the feedback correction amount.
- the engine control computer 70 executes the routine composed of the steps described above, when the ethanol concentration of the fuel in the fuel tank 10 is changed by refueling, the fuel injected from the port injection valves 28L and 28R is changed.
- the situation where the ethanol concentration and the ethanol concentration of the fuel injected from the in-cylinder injection valves 40L and 40R are different can be solved at an early stage. As a result, it is possible to suppress the deterioration of the emission performance and drivability accompanying the decrease in the control accuracy of the ignition timing and the fuel injection amount.
- the injection ratio is 0.5: 0.5 regardless of the operating state of the engine 2. Therefore, the ethanol concentration of the injected fuel can be prevented from changing suddenly depending on the operating state while the fuel is being replaced in the fuel supply lines on both the in-cylinder injection port side and the port injection valve side.
- the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the present invention.
- the ethanol concentration estimated from the output value of the ethanol concentration sensor is used as the ignition timing. And used to determine the fuel injection amount.
- the ignition timing and the fuel injection amount are always set based on the ethanol concentration estimated from the output value of the ethanol concentration sensor without using the ethanol concentration calculated from the feedback correction amount. You may decide.
- the change in the ethanol concentration of the fuel is detected from the change in the output value of the ethanol concentration sensor.
- the refueling action itself may be detected as a sign indicating the possibility of a change in the ethanol concentration of the fuel. That is, if fuel supply is detected by a fuel remaining amount sensor or the like, the injection ratio between the port injection and the direct in-cylinder injection may be fixed at a constant ratio because the ethanol concentration of the fuel may have changed.
- the act of starting the internal combustion engine may be detected as a sign indicating the possibility of a change in the ethanol concentration of the fuel.
- the refueling is performed mainly when the internal combustion engine is stopped, and the effect of the refueling appears when the internal combustion engine is started.
- the ethanol concentration sensor is arranged in front of the branch point of the low-pressure fuel pipe.
- the ethanol concentration sensor only needs to be at a position where the change in the ethanol concentration of the fuel in the fuel tank due to refueling can be detected before injection from each fuel injection valve. Therefore, the ethanol concentration sensor may be integrated with the feed pump and provided in the fuel tank, or may be provided in the fuel filler port.
- the injection ratio between the port injection and the direct injection in the cylinder fixed in step S4 of the above-mentioned routine is not necessarily 0.5: 0.5.
- the injection ratio may be 0.4: 0.6 or 0.6: 0.4.
- the injection ratio may be changed in a range excluding 0: 1 and 1: 0 instead of fixing the injection ratio to a constant ratio. That is, as long as fuel is always injected into both injection valves, the injection ratio may be changed according to the operating state of the engine 2. In order to avoid a sudden change in the ethanol concentration of the injected fuel depending on the operating state, it is preferable that the injection ratio is fixed at a constant ratio as in the above-described embodiment.
- the residual fuel before refueling is consumed steadily in both the fuel supply line connected to the in-cylinder injection valve and the fuel supply line connected to the port injection valve.
- the fuel can be replaced in the fuel supply line.
- the injection ratio between the port injection and the in-cylinder direct injection that is changed in step S10 of the above-described routine is not necessarily 1: 0.
- the injection ratio may be changed to 0: 1 so that only in-cylinder direct injection is performed.
- the injection ratio can be changed by a predetermined ratio or more from the fixed injection ratio, it may be changed to an injection ratio other than 1: 0 or 0: 1.
- Fuel tank 12 Fuel tank 12 Feed pump 20 Ethanol concentration sensor 22 Low pressure fuel pipe 24L, 24R Low pressure delivery pipe 28L, 28R Port injection valve 34 High pressure fuel pipe 36L, 36R High pressure delivery pipe 40L, 40R In-cylinder injection Valve 50 high pressure fuel pump 70 engine control computer
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Abstract
Description
4L 左バンク
4R 右バンク
10 燃料タンク
12 フィードポンプ
20 エタノール濃度センサ
22 低圧燃料パイプ
24L,24R 低圧デリバリーパイプ
28L,28R ポート噴射弁
34 高圧燃料パイプ
36L,36R 高圧デリバリーパイプ
40L,40R 筒内噴射弁
50 高圧燃料ポンプ
70 エンジンコントロールコンピュータ
Claims (11)
- 燃料を筒内に直接噴射する筒内噴射弁と燃料を吸気ポートに噴射するポート噴射弁とを備え、異種燃料が混合した燃料を使用可能な内燃機関の制御装置であって、
前記内燃機関の運転状態に応じて前記筒内噴射弁の燃料噴射量と前記ポート噴射弁の燃料噴射量とを制御する噴射制御手段と、
使用燃料における異種燃料の混合割合の変化又は変化の可能性のうち少なくとも一方を検知する検知手段と、を備え、
前記噴射制御手段は、前記検知手段によって使用燃料における異種燃料の混合割合の変化又は変化の可能性が検知された場合には、前記筒内噴射弁と前記ポート噴射弁の双方から燃料が噴射されるように、前記筒内噴射弁の燃料噴射量と前記ポート噴射弁の燃料噴射量とを制御することを特徴とする内燃機関の制御装置。 - 前記検知手段は、特定の燃料成分に対応する濃度センサの出力値の変化から使用燃料における異種燃料の混合割合の変化を検知することを特徴とする請求項1に記載の内燃機関の制御装置。
- 前記検知手段は、燃料タンクへの給油が行われたこと又は行われることのうち少なくとも一方を使用燃料における燃料成分の濃度の変化の可能性として検知することを特徴とする請求項1又は2に記載の内燃機関の制御装置。
- 前記検知手段は、前記内燃機関が始動されたこと又は始動されることのうち少なくとも一方を使用燃料における異種燃料の混合割合の変化の可能性として検知することを特徴とする請求項1乃至3の何れか1項に記載の内燃機関の制御装置。
- 前記濃度センサは、燃料ポンプの吐出口から延びる燃料供給ラインが前記筒内噴射弁に接続される第1の燃料供給ラインと前記ポート噴射弁に接続される第2の燃料供給ラインとに分岐する分岐点の手前に配置されていることを特徴とする請求項2に記載の内燃機関の制御装置。
- 前記濃度センサは、燃料タンクの内部において燃料ポンプと一体化されて配置されていることを特徴とする請求項2に記載の内燃機関の制御装置。
- 燃料供給系に設けられた濃度センサの出力値から推定される異種燃料の混合割合に基づいて点火時期及び燃料噴射量を決定する手段をさらに備えることを特徴とする請求項1乃至6の何れか1項に記載の内燃機関の制御装置。
- 前記検知手段によって使用燃料における異種燃料の混合割合の変化又は変化の可能性が検知されていない通常時は、空燃比フィードバック制御にかかるフィードバック補正量から算出した異種燃料の混合割合に基づいて点火時期及び燃料噴射量を決定し、前記検知手段によって使用燃料における異種燃料の混合割合の変化又は変化の可能性のうち少なくとも一方が検知された場合には、濃度センサの出力値から推定される異種燃料の混合割合の範囲に基づいて点火時期及び燃料噴射量を決定する手段をさらに備えることを特徴とする請求項1乃至6の何れか1項に記載の内燃機関の制御装置。
- 前記噴射制御手段は、前記検知手段によって使用燃料における異種燃料の混合割合の変化又は変化の可能性のうち少なくとも一方が検知された後、前記筒内噴射弁から噴射される燃料における異種燃料の混合割合と前記ポート噴射弁から噴射される燃料における異種燃料の混合割合とがともに変化してほぼ等しい混合割合になったことが確認されたら、前記筒内噴射弁の燃料噴射量と前記ポート噴射弁の燃料噴射量とを前記内燃機関の運転状態に応じた比率に制御することを特徴とする請求項1乃至8の何れか1項に記載の内燃機関の制御装置。
- 前記噴射制御手段は、前記筒内噴射弁の燃料噴射量と前記ポート噴射弁の燃料噴射量との比率を所定割合以上変化させたときの空燃比センサの出力値の変化量或いは同出力値に基づき計算されるパラメータの変化量が閾値よりも小さいかどうかにより、前記筒内噴射弁から噴射される燃料における異種燃料の混合割合と前記ポート噴射弁から噴射される燃料における異種燃料の混合割合とがほほ等しくなったことを確認することを特徴とする請求項9に記載の内燃機関の制御装置。
- 前記燃料はアルコールと炭化水素系燃料とが混合した燃料であることを特徴とする請求項1乃至10の何れか1項に記載の内燃機関の制御装置。
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US14/411,974 US10006380B2 (en) | 2012-07-06 | 2012-07-06 | Control device for internal combustion engine |
BR112015000256-0A BR112015000256B1 (pt) | 2012-07-06 | 2012-07-06 | Motor de combustão interna e dispositivo de controle para um motor de combustão interna |
JP2014523542A JP5907265B2 (ja) | 2012-07-06 | 2012-07-06 | 内燃機関の制御装置 |
CN201280074416.7A CN104411952B (zh) | 2012-07-06 | 2012-07-06 | 内燃机的控制装置 |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10989123B2 (en) | 2018-08-27 | 2021-04-27 | Toyota Jidosha Kabushiki Kaisha | Controller and control method for internal combustion engine |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9255541B2 (en) | 2013-04-01 | 2016-02-09 | Ford Global Technologies, Llc | Method and system for engine control |
US10422296B2 (en) * | 2015-06-11 | 2019-09-24 | Ford Global Technologies, Llc | Methods and system for improving fuel delivery amount accuracy |
US10041434B2 (en) * | 2016-09-08 | 2018-08-07 | Ford Global Technologies, Llc | Fuel injection operation |
US11661902B1 (en) * | 2022-04-26 | 2023-05-30 | GM Global Technology Operations LLC | Port-direct injection engine systems and methods using ethanol-gasoline fuels |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006214415A (ja) | 2005-02-07 | 2006-08-17 | Toyota Motor Corp | 内燃機関の始動制御装置及び燃料噴射制御装置 |
JP2009156056A (ja) * | 2007-12-25 | 2009-07-16 | Nissan Motor Co Ltd | エンジンの始動制御装置 |
JP2010001752A (ja) * | 2008-06-18 | 2010-01-07 | Toyota Motor Corp | 内燃機関の燃料噴射装置 |
JP2011001856A (ja) * | 2009-06-17 | 2011-01-06 | Denso Corp | 内燃機関の制御装置 |
JP2011132920A (ja) * | 2009-12-25 | 2011-07-07 | Toyota Motor Corp | 内燃機関の制御装置 |
JP2011144706A (ja) * | 2010-01-12 | 2011-07-28 | Toyota Motor Corp | 内燃機関の燃料アルコール濃度判定装置 |
JP2011220235A (ja) * | 2010-04-09 | 2011-11-04 | Toyota Motor Corp | 内燃機関の制御装置 |
Family Cites Families (44)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4063197B2 (ja) * | 2003-11-11 | 2008-03-19 | トヨタ自動車株式会社 | 内燃機関の噴射制御装置 |
JP4033110B2 (ja) * | 2003-11-11 | 2008-01-16 | トヨタ自動車株式会社 | 内燃機関および内燃機関の制御方法 |
CN1969113B (zh) * | 2004-06-15 | 2011-12-28 | 丰田自动车株式会社 | 用于内燃机用双燃油喷射系统的清污系统的控制设备 |
US7314033B2 (en) * | 2004-11-18 | 2008-01-01 | Massachusetts Institute Of Technology | Fuel management system for variable ethanol octane enhancement of gasoline engines |
US8082735B2 (en) * | 2005-04-06 | 2011-12-27 | Massachusetts Institute Of Technology | Optimized fuel management system for direct injection ethanol enhancement of gasoline engines |
US20080060627A1 (en) * | 2004-11-18 | 2008-03-13 | Massachusetts Institute Of Technology | Optimized fuel management system for direct injection ethanol enhancement of gasoline engines |
US7640912B2 (en) * | 2005-11-30 | 2010-01-05 | Ford Global Technologies, Llc | System and method for engine air-fuel ratio control |
US8132555B2 (en) * | 2005-11-30 | 2012-03-13 | Ford Global Technologies, Llc | Event based engine control system and method |
US7647916B2 (en) | 2005-11-30 | 2010-01-19 | Ford Global Technologies, Llc | Engine with two port fuel injectors |
JP4169046B2 (ja) * | 2006-05-23 | 2008-10-22 | トヨタ自動車株式会社 | 内燃機関の制御装置 |
JP4449956B2 (ja) * | 2006-08-04 | 2010-04-14 | トヨタ自動車株式会社 | 内燃機関 |
JP4595952B2 (ja) * | 2007-03-15 | 2010-12-08 | トヨタ自動車株式会社 | 内燃機関の制御装置、制御方法、その方法を実現させるプログラムおよびそのプログラムを記録した記録媒体 |
US7810468B2 (en) * | 2007-06-13 | 2010-10-12 | Denso Corporation | Controller and control system for internal combustion engine |
JP2009091944A (ja) * | 2007-10-05 | 2009-04-30 | Denso Corp | 内燃機関の制御装置及び制御システム |
US7971567B2 (en) * | 2007-10-12 | 2011-07-05 | Ford Global Technologies, Llc | Directly injected internal combustion engine system |
JP2009121364A (ja) * | 2007-11-15 | 2009-06-04 | Toyota Motor Corp | 燃料噴射制御装置 |
US8141356B2 (en) * | 2008-01-16 | 2012-03-27 | Ford Global Technologies, Llc | Ethanol separation using air from turbo compressor |
JP4872932B2 (ja) | 2008-01-25 | 2012-02-08 | トヨタ自動車株式会社 | 内燃機関の制御装置 |
US7768382B2 (en) * | 2008-04-04 | 2010-08-03 | Ford Global Technologies, Llc | Vehicle misfueling mitigation system and method |
US7720592B2 (en) * | 2008-05-20 | 2010-05-18 | Ford Global Technologies, Llc | Approach for enhancing emissions control device warmup in a direct injection engine system |
US7890241B2 (en) * | 2008-05-21 | 2011-02-15 | Ford Global Technologies, Llc | Boosted engine control responsive to driver selected performance |
US8037874B2 (en) * | 2008-06-11 | 2011-10-18 | Ford Global Technologies, Llc | Fuel based cylinder knock control |
US7546835B1 (en) * | 2008-07-31 | 2009-06-16 | Ford Global Technologies, Llc | Fuel delivery system for multi-fuel engine |
US7845334B2 (en) * | 2008-07-31 | 2010-12-07 | Ford Global Technologies, Llc | Fuel system for multi-fuel engine |
US8397701B2 (en) * | 2008-07-31 | 2013-03-19 | Ford Global Technologies, Llc | Fuel system for multi-fuel engine |
US7802562B2 (en) * | 2008-07-31 | 2010-09-28 | Ford Global Technologies, Llc | Engine boost control for multi-fuel engine |
JP2010043531A (ja) * | 2008-08-08 | 2010-02-25 | Denso Corp | 内燃機関の燃料噴射制御装置 |
JP4603606B2 (ja) * | 2008-09-05 | 2010-12-22 | 株式会社日本自動車部品総合研究所 | 燃料供給装置 |
EP2343445B1 (en) * | 2008-11-06 | 2015-01-21 | Toyota Jidosha Kabushiki Kaisha | Internal combustion engine controller |
US7826957B2 (en) * | 2009-01-26 | 2010-11-02 | Ford Global Technologies, Llc | Engine control responsive to varying amounts of alcohol in fuel |
US8495996B2 (en) * | 2009-12-04 | 2013-07-30 | Ford Global Technologies, Llc | Fuel alcohol content detection via an exhaust gas sensor |
US8522760B2 (en) * | 2009-12-04 | 2013-09-03 | Ford Global Technologies, Llc | Fuel alcohol content detection via an exhaust gas sensor |
US8322327B2 (en) * | 2010-01-28 | 2012-12-04 | Cummins Power Generation, Inc. | Genset engine using an electronic fuel injection system integrating an alcohol sensor |
US8042518B2 (en) * | 2010-04-14 | 2011-10-25 | Ford Global Technologies, Llc | Multi-component transient fuel compensation |
JP2011247110A (ja) * | 2010-05-24 | 2011-12-08 | Toyota Motor Corp | 内燃機関の制御装置 |
JP5605006B2 (ja) * | 2010-06-17 | 2014-10-15 | トヨタ自動車株式会社 | 内燃機関の制御装置 |
US8483937B2 (en) * | 2010-07-29 | 2013-07-09 | Ford Global Technologies, Llc | Method and system for controlling fuel usage |
DE102010037003A1 (de) * | 2010-08-16 | 2012-02-16 | Ford Global Technologies, Llc. | Verfahren zum Betreiben einer Brennkraftmaschine mit Gas als Kraftstoff und Brennkraftmaschine zur Durchführung eines derartigen Verfahrens |
JP5282779B2 (ja) * | 2010-12-08 | 2013-09-04 | トヨタ自動車株式会社 | 内燃機関の燃料供給装置 |
US8776764B2 (en) * | 2011-01-04 | 2014-07-15 | Ford Global Technologies, Llc | Fuel system for a multi-fuel engine |
US8706386B2 (en) * | 2011-06-30 | 2014-04-22 | Ford Global Technologies, Llc | Method for controlling fuel injection for a dual fuel engine |
JP5549784B2 (ja) * | 2011-08-29 | 2014-07-16 | トヨタ自動車株式会社 | 内燃機関の制御装置 |
BR112014003255A2 (pt) * | 2011-08-29 | 2017-03-01 | Toyota Motor Co Ltd | dispositivo de controle para motor de combustão interna |
US9429124B2 (en) * | 2013-02-12 | 2016-08-30 | Ford Global Technologies, Llc | Direct injection fuel pump |
-
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- 2012-07-06 WO PCT/JP2012/067389 patent/WO2014006761A1/ja active Application Filing
- 2012-07-06 BR BR112015000256-0A patent/BR112015000256B1/pt not_active IP Right Cessation
- 2012-07-06 CN CN201280074416.7A patent/CN104411952B/zh active Active
- 2012-07-06 US US14/411,974 patent/US10006380B2/en active Active
- 2012-07-06 EP EP12880558.7A patent/EP2871351B1/en active Active
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006214415A (ja) | 2005-02-07 | 2006-08-17 | Toyota Motor Corp | 内燃機関の始動制御装置及び燃料噴射制御装置 |
JP2009156056A (ja) * | 2007-12-25 | 2009-07-16 | Nissan Motor Co Ltd | エンジンの始動制御装置 |
JP2010001752A (ja) * | 2008-06-18 | 2010-01-07 | Toyota Motor Corp | 内燃機関の燃料噴射装置 |
JP2011001856A (ja) * | 2009-06-17 | 2011-01-06 | Denso Corp | 内燃機関の制御装置 |
JP2011132920A (ja) * | 2009-12-25 | 2011-07-07 | Toyota Motor Corp | 内燃機関の制御装置 |
JP2011144706A (ja) * | 2010-01-12 | 2011-07-28 | Toyota Motor Corp | 内燃機関の燃料アルコール濃度判定装置 |
JP2011220235A (ja) * | 2010-04-09 | 2011-11-04 | Toyota Motor Corp | 内燃機関の制御装置 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10989123B2 (en) | 2018-08-27 | 2021-04-27 | Toyota Jidosha Kabushiki Kaisha | Controller and control method for internal combustion engine |
Also Published As
Publication number | Publication date |
---|---|
EP2871351A1 (en) | 2015-05-13 |
BR112015000256B1 (pt) | 2021-04-06 |
EP2871351B1 (en) | 2021-01-06 |
EP2871351A4 (en) | 2016-02-17 |
US10006380B2 (en) | 2018-06-26 |
JPWO2014006761A1 (ja) | 2016-06-02 |
JP5907265B2 (ja) | 2016-04-26 |
CN104411952B (zh) | 2017-03-22 |
CN104411952A (zh) | 2015-03-11 |
US20150122218A1 (en) | 2015-05-07 |
BR112015000256A2 (pt) | 2017-06-27 |
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