JP2007297956A - Fueling installation, engine control device for vehicle and fueling control system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To accurately detect properties of fuel in a vehicle fuel tank on completion of fueling. <P>SOLUTION: A fueling installation FS is provided with a fueling nozzle 1 inserted in a vehicle fuel tank 24 at a time of fueling a vehicle V, and a fuel property sensor 6 attached on a tip of the fueling nozzle 24. Fuel properties at the time of completion of fueling which are properties of fuel in the vehicle fuel tank 24 at the time of completion of fueling are detected by the fuel property sensor 6, and are sent to the vehicle V. The vehicle V receives fuel properties at the time of completion of fueling and performs engine control with using the fuel properties at the time of completion of fueling. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a fueling facility, a vehicle engine control device, and a fueling control system.

  Conventionally, for example, an alcohol mixed fuel obtained by mixing alcohol with gasoline or an internal combustion engine using compressed natural gas (CNG) as a fuel is known. However, the alcohol concentration and the component ratio, that is, the fuel property in these alcohol mixed fuel and gas fuel are not always constant, and therefore the fuel property may be different every time the fuel is supplied to the engine. On the other hand, when the fuel property varies, for example, the optimum ignition timing varies. Therefore, it is necessary to correct the ignition timing according to the fuel properties.

  Therefore, a fuel supply control system including a fuel supply facility and a vehicle engine control device, wherein the fuel supply facility is inserted into a vehicle fuel tank when fueling the vehicle, and a fuel attached to the fuel supply nozzle A fuel property sensor at the time of refueling, which is a property of the fuel in the vehicle fuel tank at the time of completion of refueling, and transmitted to the engine control device of the vehicle. 2. Description of the Related Art There is a known fuel supply control system that receives a fuel property at the time of completion of fueling transmitted from a fueling device and corrects a fuel injection amount using the fuel property at the time of fueling completion (see Patent Document 1). In this fuel supply control system, the fuel property at the time of completion of fuel supply is directly detected by the fuel property sensor and transmitted to the vehicle, and the ignition timing is corrected using the fuel property at the time of completion of fuel supply.

JP 2005-113715 A

  Certainly, since the fuel nozzle is inserted into the vehicle fuel tank when fueling, it can be seen that if the fuel property sensor is attached to the fuel nozzle, the property of the fuel in the vehicle fuel tank can be accurately detected when fueling is completed. However, depending on the mounting position of the fuel property sensor, the fuel in the vehicle fuel tank may not contact the fuel property sensor. In this case, there is a problem that the fuel property cannot be accurately detected. If the fuel property cannot be detected accurately, the ignition timing cannot be corrected accurately.

  According to one aspect of the present invention, in order to solve the above-described problem, a fuel nozzle that is inserted into a vehicle fuel tank when fueling a vehicle, and a fuel property sensor attached to the tip of the fuel nozzle are provided. A fuel supply facility that detects the fuel property at the time of refueling at the time of completion of refueling, which is detected by the fuel property sensor, and outputs the fuel property to the outside. The engine is controlled using the fuel property at the completion of refueling in the vehicle.

  According to another aspect of the present invention, in order to solve the above-described problem, the fuel property at the time of refueling, which is the property of the fuel in the vehicle fuel tank when the refueling to the vehicle is completed, is received from the outside, and the refueling is completed. An engine control device for a vehicle configured to perform engine control using fuel properties, wherein the fuel property at the time of completion of refueling is output from a fueling facility, and the fueling facility is a vehicle fuel used when fueling a vehicle. A fuel supply nozzle inserted into the tank and a fuel property sensor attached to the tip of the fuel supply nozzle are provided so that the fuel property is detected by the fuel property sensor and output to the outside when the fuel supply is completed. It has become.

  According to still another aspect of the present invention, in order to solve the above-described problem, an oil supply control system including an oil supply facility and an engine control device for a vehicle, wherein the oil supply facility is configured to supply oil to a vehicle. A fuel supply nozzle inserted into the vehicle fuel tank and a fuel property sensor attached to the tip of the fuel supply nozzle are provided, and the fuel property at the completion of fuel supply, which is the property of the fuel in the vehicle fuel tank at the time of completion of fuel supply, is provided. The engine control device of the vehicle receives the fuel property at the completion of refueling output from the fueling device, and performs engine control using the fuel property at the time of fueling completion. I am doing so.

  Further, according to still another aspect of the present invention, in order to solve the above-described problem, the fuel property before refueling and the fuel amount before refueling which are the properties and amount of the remaining fuel in the vehicle fuel tank immediately before refueling are received from the outside, A vehicle at the time of completion of refueling based on the fuel property before fueling and the amount of fuel before fueling and the fuel property before fueling and the amount of fueled fuel are detected. A fueling facility that calculates fuel properties at the time of refueling, which is a property of fuel in the fuel tank, and outputs the fuel properties to the outside, wherein the fuel properties before fueling and the fuel amount before fueling are output from the vehicle. The fuel property at the time of completion of refueling is received by the vehicle, and engine control is performed in the vehicle using the fuel property at the time of refueling completion.

  In order to solve the above-described problem, according to still another aspect of the present invention, the fuel property before refueling and the fuel amount before refueling, which are the properties and amount of the remaining fuel in the vehicle fuel tank immediately before refueling, are output to the outside. An engine control device for a vehicle which receives from outside the fuel property at the time of refueling, which is the property of the fuel in the vehicle fuel tank at the time of refueling to the vehicle, and performs engine control using the fuel property at the time of refueling completion The fuel property at the time of completion of refueling is output from the fueling facility, and the fueling facility receives the fuel property information before fueling and the fuel amount information before fueling output from the engine control device of the vehicle. The fuel property and amount of fuel that is the property and amount of fuel supplied to the fuel are detected, and the fuel property at the completion of refueling based on the fuel property before fueling and the fuel amount before fueling, and the fuel fuel property and fuel amount. Calculate And outputs it to the outside while.

  According to still another aspect of the present invention for solving the above-described problem, an oil supply control system including an oil supply facility and an engine control device for a vehicle, wherein the engine control device for the vehicle is immediately before oil supply. The fuel property before fueling and the fuel amount before fueling which are the properties and amount of the remaining fuel in the vehicle fuel tank in the vehicle are output to the outside, and the fueling facility controls the fuel property before fueling and the fuel amount before fueling in the engine of the vehicle. The fuel property and the amount of fuel supplied, which are the properties and amount of fuel received from the apparatus and supplied to the vehicle, are detected, and based on the fuel property before fuel supply and the fuel amount before fuel supply, and the fuel supply property and fuel amount. The fuel property at the time of refueling, which is the property of the fuel in the vehicle fuel tank when the refueling is completed, is calculated and output to the outside, and the engine control device of the vehicle receives the fuel property at the time of refueling from the fueling facility. And to perform the engine control using an oil supply completion time fuel property.

  The property of the fuel in the vehicle fuel tank when refueling is completed can be detected accurately.

  Referring to FIG. 1, the fuel supply control system S includes a fuel supply facility FS and a vehicle V. The fueling facility FS can be constituted by a gas station, for example. As shown in FIG. 1, a fuel supply facility FS includes a fuel supply nozzle 1, a fuel storage 2, a fuel pump 3 that supplies fuel in the fuel storage 2 to the fuel supply nozzle 1, and a flow rate for detecting the amount of fuel supplied to the vehicle V. A total of 4 and an electronic control unit 10 are provided. A fuel detection sensor 5 for detecting the presence of fuel and a fuel property sensor 6 for detecting the property of the fuel are respectively attached to the tip of the fuel supply nozzle 1. Here, liquid fuel such as gasoline, light oil, alcohol, or a mixture thereof, and gas fuel such as CNG can be used as the fuel. Further, the fuel property can be expressed by, for example, a component ratio, viscosity, volatility, average molecular weight, and the like.

  The electronic control unit 10 of the fueling facility FS is a digital computer, and includes a communication device 12, a storage device 13, a CPU (microprocessor) 14, an input port 15 and an output port 16, which are connected to each other by a bidirectional bus 11. To do. The refueling nozzle 1 generates a signal indicating an on / off state of a trigger operated by an operator. Output signals of the fueling nozzle 1, the flow meter 4, the fuel detection sensor 5, and the fuel property sensor 6 are input to the input port 15. On the other hand, the output port 16 is connected to the fuel pump 3, and the fuel pump 3 is controlled based on a signal from the electronic control unit 10.

  Referring further to FIG. 1, the vehicle V includes an internal combustion engine body 21, a fuel injection valve 22, a spark plug 23, a fuel tank 24, a fuel pump 25 for supplying fuel in the fuel tank 24 to the fuel injection valve 21, and an electronic control unit. 30. An open / close sensor 27 that emits a signal indicating an open / closed state of the fuel supply port 26 is attached to the fuel supply port 26 of the fuel tank 25.

  The electronic control unit 30 of the vehicle V is also a digital computer, and includes a communication device 32, a storage device 33, a CPU 34, an input port 35, and an output port 36 that are connected to each other by a bidirectional bus 31. The output signal of the open / close sensor 27 is input to the input port 35. Further, an output pulse of the rotational speed sensor 28 that generates an output pulse representing the engine rotational speed Ne is input to the input port 35. On the other hand, the output port 36 is connected to the fuel injection valve 22, the spark plug 23, and the fuel pump 25. The fuel injection valve 22, the spark plug 23, and the fuel pump 25 are controlled based on a signal from the electronic control unit 30. The

  Note that the communication device 12 of the fueling facility FS and the communication device 32 of the vehicle V can communicate with each other wirelessly or by wire.

  When the vehicle V should be refueled from the refueling facility FS, the refueling port 26 of the vehicle V is first opened and the refueling nozzle 1 is inserted into the fuel tank 24. Next, when the fuel supplier pulls the trigger of the fuel nozzle 1, the fuel pump 4 is activated, and the fuel in the fuel storage 2 is supplied into the fuel tank 24 through the fuel nozzle 1. Next, as shown in FIG. 2, when the fuel in the fuel tank 24 comes into contact with the fuel supply sensor 5, a signal for completing the fuel supply, that is, a fuel supply completion signal is issued from the fuel sensor 5. When the refueling completion signal is issued, the fuel pump 4 is stopped and thus the refueling is completed. In FIG. 2, reference numeral 24 a denotes a pipe portion from the main body portion of the fuel tank 24 to the fuel supply port 26.

  In this case, since the fuel property sensor 6 is attached to the tip of the fuel supply nozzle 1, the fuel in the fuel tank 24 reliably contacts the fuel property sensor 6 when the fuel supply is completed as shown in FIG. 2. Therefore, the property of the fuel in the fuel tank 24 when the refueling is completed, that is, the fuel property when the refueling is completed can be reliably detected.

  When the fuel property at the time of refueling is detected in this way, the fuel property at the time of refueling is transmitted from the communication device 12 of the fueling facility FS, received by the communication device 32 of the vehicle V, and stored in the storage device 33 of the vehicle V. Remembered. On the other hand, when refueling is completed, the fuel in the fuel tank 24 is supplied from the fuel injection valve 22 to the engine body 1 in the vehicle V, and the engine is operated. At this time, engine control is performed using the fuel property at the time of refueling completion.

  The engine control will be described taking the ignition timing control as an example. The ignition timing θ is calculated by correcting the basic ignition timing θB with the property correction coefficient kθ (θ = θB · kθ). Here, the basic ignition timing θB is an optimum ignition timing such as MBT, and is stored in advance in the storage device 33 in the form of a map as a function of the engine operating state such as the engine load and the engine speed. On the other hand, the property correction coefficient kθ is for maintaining the ignition timing θ at the optimum ignition timing, and is stored in advance in the storage device 33 in the form of a map as a function of the fuel property at the completion of refueling. In this way, the ignition timing can be maintained at the optimal ignition timing even if the fuel property at the time of refueling is changed.

  The fuel property at the time of refueling completion can also be used when performing air-fuel ratio control for maintaining the air-fuel ratio at the target air-fuel ratio or rotational speed control for maintaining the idling rotational speed at the target rotational speed.

  FIG. 3 shows a flowchart for explaining an embodiment according to the present invention. Referring to FIG. 3, the refueling completion signal issued from the fuel sensing sensor 5 in the refueling facility FS is acquired (step 100), and the fuel property at the time of refueling detected by the fuel property sensor 6 is acquired (step 101). . Next, the fuel property at the time of refueling is transmitted from the fueling facility FS (step 102) and received by the vehicle V (step 103). Next, a property correction coefficient is calculated according to the fuel property at the time of completion of refueling in the vehicle V (step 104), and engine control is performed using this property correction coefficient (step 105).

  FIG. 4 shows an oil supply control system S according to another embodiment of the present invention. In the embodiment shown in FIG. 4, the fuel property sensor 6 is not attached to the fuel supply nozzle 1 in the fuel supply facility FS, the fuel property sensor 7 is attached to the fuel storage 2, and the fuel tank 24 is present in the vehicle V. 1 is different from the embodiment of FIG. 1 in that a fuel amount sensor 29 for detecting the amount of fuel to be attached is attached.

  Next, the embodiment shown in FIG. 4 will be described in detail with reference to FIG. Referring to FIG. 5, first, in the vehicle V, the fuel property before fueling and the fuel amount before fueling, which are the properties and amount of fuel remaining in the fuel tank 24 immediately before fueling, are acquired (step 200). Here, the fuel property before refueling coincides with the fuel property at the time of refueling at the time of the previous refueling, and is stored in the storage device 33 of the vehicle V. On the other hand, the fuel amount before refueling is detected by the fuel amount sensor 29. Next, the fuel properties before refueling and the fuel amount before refueling are transmitted from the vehicle V (step 201) and received by the fueling facility FS (step 202). Next, refueling to the vehicle V is started in the refueling facility FS. Note that refueling to the vehicle V is prohibited until the fuel amount before refueling is detected in the vehicle V. On the other hand, if the fuel amount before refueling is detected, refueling may be started before the fuel property before refueling and the fuel amount before refueling are received by the refueling facility FS.

  Next, a refueling completion signal issued from the fuel sensing sensor 5 is acquired (step 203), and then the refueling fuel property and the refueling fuel amount which are the properties and amount of the fuel refueled to the vehicle V are detected. Here, the fuel supply fuel property is detected by the fuel property sensor 6 before or after completion of the fuel supply, and the fuel supply fuel amount is detected by the flow meter 4. Note that the fuel supply fuel property does not have to be detected for each fuel supply. For example, the fuel supply fuel property may be detected when the fuel storage 2 is filled with fuel and stored in the storage device 13 of the fuel supply facility FS. Or the fuel supply fuel property can be acquired in advance from a fuel supplier to the fuel supply facility FS such as a former seller, and this can be input to the storage device 13 of the fuel supply facility FS.

  Next, in the fueling facility FS, the fuel property before fueling and the fuel amount before fueling for the fuel remaining in the fuel tank 24 of the vehicle V, and the fueling fuel property and fueling fuel amount for the newly supplied fuel are obtained. Based on this, the fuel property at the completion of refueling is calculated (step 205). The fuel property at the time of completion of refueling calculated in this way accurately represents the property of the fuel in the fuel tank 24 at the time of refueling completion. Next, the fuel property at the time of refueling is transmitted from the fueling facility FS (step 206), received by the vehicle V, and stored in the storage device 33 (step 207). Next, a property correction coefficient is calculated according to the fuel property at the time of refueling in the vehicle V (step 208), and engine control is performed using this property correction coefficient (step 209). Therefore, good engine control can be maintained even if the fuel properties fluctuate.

  FIG. 6 illustrates a modification of another embodiment according to the present invention shown in FIGS. The change will be described. After the fuel property at the time of completion of refueling is calculated (step 205), the date and time when refueling was performed is acquired (step 205a). Here, the date and time are sequentially updated by the CPU 14 of the fueling facility FS. In addition, you may make it acquire the fueling date before calculating the fuel property at the time of completion of fueling. Next, the fuel property at the time of refueling and the date and time of refueling are transmitted from the fueling facility FS (step 206a), received by the vehicle V, and stored in the storage device 33 (step 207a).

  Next, in the vehicle V, an elapsed time from the refueling date and time is acquired (step 207b). Here, the date and time are sequentially updated by the CPU 34 of the vehicle V. Next, the fuel property in the tank, which is the property of the fuel in the fuel tank 24, is calculated based on the fuel property at the time of refueling and the elapsed time (step 207c). That is, since the fuel in the fuel tank 24 deteriorates with time, for example, oxidatively deteriorates, the fuel property in the tank changes with time. Therefore, in the embodiment shown in FIG. 6, the fuel property in the tank is calculated by correcting the fuel property at the time of completion of refueling based on the elapsed time after refueling. This fuel property in the tank accurately represents the property of the fuel supplied to the engine body 1.

  Next, a property correction coefficient is calculated according to the fuel property in the tank (step 208a), and engine control is performed using the property correction coefficient (step 209). Therefore, good engine control can be maintained even if the fuel properties change with time. In the embodiment shown in FIGS. 1 to 3, the fuel property at the time of refueling can be corrected based on the elapsed time from the refueling date and time.

  In each example according to the present invention described so far, data such as fuel properties at the time of completion of refueling is transmitted and received by the communication devices 12 and 32. However, for example, the fuel property at the completion of refueling may be output to a medium such as a memory card in the refueling facility FS, and the fuel property at the time of refueling stored in the storage medium may be read by the vehicle V.

It is a whole figure of an oil supply control system. It is the elements on larger scale of the fueling nozzle and fuel tank at the time of fueling. It is a flowchart for demonstrating the Example by this invention. It is a general view of the oil supply control system of another Example by this invention. It is a flowchart for demonstrating another Example by this invention. It is a flowchart for demonstrating the example of a change of another Example by this invention.

Explanation of symbols

FS Refueling equipment V Vehicle 1 Refueling nozzle 6 Fuel property sensor 12, 32 Communication device 21 Engine body 24 Fuel tank

Claims (7)

  Completion of refueling, which is a property of the fuel in the vehicle fuel tank when refueling is completed, comprising a fuel nozzle inserted into the vehicle fuel tank when refueling the vehicle and a fuel property sensor attached to the tip of the fuel nozzle A fuel supply facility that detects the fuel property at the time of detection and outputs the fuel property to the outside, wherein the fuel property at the time of completion of refueling is received by the vehicle, and the fuel property at the time of completion of refueling is used in the vehicle A refueling facility where the engine is controlled.   An engine control device for a vehicle that receives from outside the fuel property at the time of refueling, which is the property of the fuel in the vehicle fuel tank at the time of refueling to the vehicle, and performs engine control using the fuel property at the time of refueling completion. The fuel property when the refueling is completed is output from the refueling facility, and the refueling facility is attached to the refueling nozzle inserted into the vehicle fuel tank when refueling the vehicle, and attached to the tip of the refueling nozzle. A vehicle engine control device comprising a fuel property sensor, wherein the fuel property at the time of refueling is detected by the fuel property sensor and output to the outside.   A fuel supply control system comprising a fuel supply facility and a vehicle engine control device, wherein the fuel supply facility is attached to a fuel nozzle inserted into a vehicle fuel tank when fueling the vehicle, and attached to a tip of the fuel nozzle. A fuel property sensor, and the fuel property at the time of refueling at the time of completion of refueling is detected by the fuel property sensor and output to the outside. Is a fuel supply control system that receives the fuel property at the time of completion of fueling output from the fueling device and performs engine control using the fuel property at the time of fueling completion.   Receiving the fuel property before fueling and the amount of fuel before refueling, which is the property and amount of the remaining fuel in the vehicle fuel tank immediately before refueling, and detecting the fuel property and fueling amount of fuel that is the property and amount of fuel refueled to the vehicle Based on the fuel property before refueling and the fuel amount before refueling, and the fuel property and fuel amount before refueling, the fuel property at the time of refueling, which is the property of the fuel in the vehicle fuel tank when refueling is completed, is calculated outside. A fueling facility configured to output the fuel property before fueling and the amount of fuel before fueling are output from the vehicle, the fuel property at the time of completion of fueling being received by the vehicle, and the fueling at the vehicle A refueling facility in which engine control is performed using fuel properties when completed.   The fuel property before fueling and the fuel amount before fueling, which are the properties and amount of the remaining fuel in the vehicle fuel tank immediately before refueling, are output to the outside, and the fueling completion that is the property of the fuel in the vehicle fuel tank when refueling to the vehicle is completed An engine control device for a vehicle that receives the fuel property from the outside and performs engine control using the fuel property at the time of refueling completion, wherein the fuel property at the time of refueling is output from the fueling facility, The refueling facility receives the pre-fuel supply fuel property and pre-fuel supply fuel amount information output from the engine control device of the vehicle, and detects the fuel supply fuel property and the fuel supply fuel amount, which are the properties and amount of fuel supplied to the vehicle. An engine control device for a vehicle is configured to calculate the fuel property at the time of completion of refueling and output the fuel property to the outside based on the fuel property before refueling and the fuel amount before refueling, and the fuel property and fuel amount. .   A fuel supply control system including a fuel supply facility and an engine control device for a vehicle, wherein the engine control device for the vehicle is a fuel property and fuel supply before fuel supply that is a property and amount of remaining fuel in a vehicle fuel tank immediately before fueling. The fuel amount is output to the outside, and the fueling facility receives the fuel property before fueling and the fuel amount before fueling from the engine control device of the vehicle, and the fueling fuel property that is the property and amount of fuel supplied to the vehicle and The fuel property at the time of refueling, which is the property of the fuel in the vehicle fuel tank at the time of completion of refueling, is detected based on the fuel property before refueling and the fuel amount before refueling and the fuel property and fuel amount before refueling. The vehicle engine control device receives the fuel property at the completion of refueling from the fueling facility, and performs engine control using the fuel property at the time of completion of refueling. System.   The refueling facility outputs the fueling date and time along with the fuel property when the refueling is completed, and the engine control device of the vehicle receives the fueling date and time along with the fuel property when the refueling is completed. The oil supply control system according to claim 3 or 6, wherein the engine control is performed using the elapsed time.

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