DE112014004800T5 - Method and system for controlling the operation of a motor vehicle - Google Patents

Abstract

The invention relates to a method of controlling the operation of a motor vehicle (100), wherein the operation is adapted to the occurrence of FAME in the fuel for an internal combustion engine (230) of the motor vehicle (100), comprising the following step: - determining the FAME content in the fuel. The method includes the steps of: determining results (s420) for at least one of the engine torque, exhaust temperature, and NOx content in the exhaust gases from the internal combustion engine (230) when operating with the current fuel and operating at a high engine load, which is significant is different than the idle; Comparing (s430) the results with results relating to these parameters when operating with a reference fuel and operating at a correspondingly high engine load; Determining (s440) the FAME content in the fuel based on the comparison as the basis for the adjustment. The invention also relates to a computer program product comprising program code (P) for a computer (200; 210) to implement a method according to the invention. The invention also relates to a system and a motor vehicle equipped with such a system.

Description

TECHNICAL AREA

The present invention relates to a method for controlling the operation of a motor vehicle. The invention also relates to a computer program product comprising program code for a computer for implementing a method according to the invention. The invention also relates to a system for controlling the operation of a motor vehicle and a motor vehicle equipped with the system.

BACKGROUND

Today, motor vehicles can be powered by diesel, for example. Recently, however, there is an increasing interest in operating motor vehicles with FAME (fatty acid methyl ester). FAME can also be described as biodiesel. FAME can be made from vegetable oils or animal fats. In today's vehicles, conventional diesel can be mixed with FAME.

The vehicles are configured to control various functions in various onboard systems based on the FAME content in the vehicle's fuel. At present, it is difficult to automatically determine a FAME content with high accuracy. In a number of different ways to determine a prevailing FAME content in the vehicle's fuel, this determination is made when the vehicle engine is idling.

The US 20120053815 describes a method to identify with a software algorithm whether FAME is contained in a fuel.

The US 6321721 describes a system for detecting fuel characteristics for an internal combustion engine after refueling and when the engine is idling.

BRIEF SUMMARY OF THE INVENTION

An object of the present invention is to provide a novel and advantageous method for controlling the operation of a motor vehicle.

Another object of the invention is to provide a novel and advantageous system and a novel and advantageous computer program for controlling the operation of a motor vehicle.

Another object of the invention is to provide an alternative method for controlling the operation of a motor vehicle, an alternative system for controlling the operation of a motor vehicle and an alternative computer program for controlling the operation of a motor vehicle.

These objects are achieved by a method according to claim 1. Other objects are achieved with a system according to claim 5. Advantageous embodiments are specified in the dependent claims.

• – Bestimmen eines FAME-Gehalts in dem Kraftstoff;
• – Bestimmen des Ergebnisses für mindestens einen der Parameter Motordrehmoment, Abgastemperatur und NO_x-Gehalt in den Abgasen aus dem Verbrennungsmotor beim Betrieb mit dem aktuellen Kraftstoff und beim Betrieb mit einer hohen Motorbelastung, die wesentlich anders als der Leerlauf ist;
• – Vergleichen der Ergebnisse mit Ergebnissen bezüglich dieser Parameter beim Betrieb mit einem Referenzkraftstoff und beim Betrieb mit einer entsprechend hohen Motorbelastung;
• – Bestimmen des FAME-Gehalts in dem Kraftstoff basierend auf dem Vergleich, als Grundlage für die Anpassung.

According to one aspect of the invention, a method is provided for controlling the operation of a motor vehicle, wherein the operation is adapted to the occurrence of FAME in the fuel for an internal combustion engine in the motor vehicle, comprising the steps of:

• Determining a FAME content in the fuel;
• Determining the result for at least one of engine torque, exhaust gas temperature, and NO _x content in the exhaust gases from the internal combustion engine when operating with the current fuel and when operating at a high engine load that is substantially different than idling;
• Comparing the results with results relating to these parameters when operating with a reference fuel and operating at a correspondingly high engine load;
• Determining the FAME content in the fuel based on the comparison as a basis for the adjustment.

In this case, a FAME content in the fuel can advantageously be determined. The FAME content may be a measure of the energy content in the fuel that may be used to advantage in adjusting the operation of the motor vehicle.

• – Bestimmen eines FAME-Gehalts in dem Kraftstoff;
• – Bestimmen eines Ergebnisses für mindestens einen der Parameter Motordrehmoment, Abgastemperatur und NO_x-Gehalt in den Abgasen aus dem Verbrennungsmotor beim Betrieb mit dem aktuellen Kraftstoff und beim Betrieb mit einer hohen Motorbelastung, die wesentlich anders als der Leerlauf ist;
• – Vergleichen der Ergebnisse mit Ergebnissen bezüglich dieser Parameter beim Betrieb mit einem Referenzkraftstoff und beim Betrieb mit einer entsprechend hohen Motorbelastung;
• – Bestimmen des FAME-Gehalts in dem Kraftstoff, basierend auf dem Vergleich, als Grundlage für die Anpassung.

According to one aspect of the invention, a method is provided for determining the energy content in a fuel for an internal combustion engine in a motor vehicle, wherein the operation of the automotive vehicle is adapted to the occurrence of FAME in the fuel, comprising the steps of:

• Determining a FAME content in the fuel;
• Determining a result for at least one of engine torque, exhaust gas temperature, and NO _x content in the exhaust gases from the internal combustion engine when operating with the current fuel and when operating at a high engine load that is substantially different than idling;
• Comparing the results with results relating to these parameters when operating with a Reference fuel and when operating with a correspondingly high engine load;
• Determining the FAME content in the fuel based on the comparison as the basis for the adjustment.

By determining the results for at least one of the parameters engine torque, exhaust gas temperature, and NO _x content in the exhaust gases from the engine when operating with the current fuel and operating at a high engine load that is substantially different than idling, the FAME Content can be determined with high accuracy. This is because a difference between the result and the result with respect to similar parameters when operating with a reference fuel and when operating with a correspondingly high engine load is greater than, for example, at idle.

• – Bestimmen eines FAME-Gehalts in dem Kraftstoff;
• – Bestimmen des Ergebnisses aller Parameter von Motordrehmoment, Abgastemperatur und NO_x-Gehalt in den Abgasen aus dem Verbrennungsmotor beim Betrieb mit dem aktuellen Kraftstoff und beim Betrieb mit einer hohen Motorbelastung, die wesentlich anders als der Leerlauf ist;
• – Vergleichen der Ergebnisse mit Ergebnissen bezüglich dieser Parameter beim Betrieb mit einem Referenzkraftstoff und beim Betrieb mit einer entsprechend hohen Motorbelastung;
• – Bestimmen des FAME-Gehalts in dem Kraftstoff, basierend auf dem Vergleich, als Grundlage für die Anpassung. Durch die Verwendung aller Parameter von Motordrehmoment, Abgastemperatur und NO_x-Gehalt, die durch die Beschaffenheit des Kraftstoffs gesteuert werden, kann eine sehr zuverlässige Detektion erreicht werden, dass FAME als Kraftstoff verwendet wurde.

According to one aspect of the invention, there is provided a method of controlling the operation of a motor vehicle, wherein the operation is adapted to the occurrence of FAME in the fuel for an internal combustion engine of the motor vehicle, comprising the steps of:

• Determining a FAME content in the fuel;
• Determining the result of all parameters of engine torque, exhaust gas temperature and NO _x content in the exhaust gases from the internal combustion engine when operating with the current fuel and operating at a high engine load, which is substantially different than the idling;
• Comparing the results with results relating to these parameters when operating with a reference fuel and operating at a correspondingly high engine load;
• Determining the FAME content in the fuel based on the comparison as the basis for the adjustment. By using all parameters of engine torque, exhaust gas temperature and NO _x content, which are controlled by the nature of the fuel, a very reliable detection can be achieved that FAME was used as fuel.

• – basierend auf dem somit bestimmten FAME-Gehalt, Auswählen eines Gehaltsbereichs aus einem vorbestimmten Satz von vorbestimmten Gehaltsbereichen. Damit wird ein kostengünstiges Verfahren gemäß der Erfindung bereitgestellt, da nur ein begrenzter Satz von Steuerparameterdarstellungen, die mit dem ausgewählten Gehaltsbereich verknüpft sind, zur Verwendung gemäß dem erfindungsgemäßen Verfahren entwickelt werden muss.

The method may include the following step:

• Based on the thus-determined FAME content, selecting a salary range from a predetermined set of predetermined salary ranges. Thus, a low cost method according to the invention is provided since only a limited set of control parameter representations associated with the selected content range must be developed for use in accordance with the inventive method.

• – für den somit ausgewählten Gehaltsbereich, Bestimmen eines Satzes von Steuerparametern, zur Steuerung des Betriebs des Kraftfahrzeugs.

The method may include the following step:

• For the salary range thus selected, determining a set of control parameters for controlling the operation of the motor vehicle.

• – Bestimmen des Ergebnisses bei einer vorherrschenden Belastung des Verbrennungsmotors, die 80 bis 100% der maximal erreichbaren Belastung beim Betrieb mit dem aktuellen Kraftstoff darstellt.

The method may include the following step:

• - Determining the result at a predominant load of the engine, which represents 80 to 100% of the maximum achievable load when operating with the current fuel.

• – Bestimmen des Ergebnisses bei einer vorherrschenden Leistungsabgabe von dem Verbrennungsmotor, die 80 bis 100% der maximal erreichbaren Leistungsabgabe beim Betrieb mit dem aktuellen Kraftstoff darstellt.

The method may include the following step:

• Determining the result at a prevailing power output from the internal combustion engine representing 80 to 100% of the maximum achievable power output when operating with the current fuel.

• – Bestimmen des Ergebnisses bei einem vorherrschenden Drehmoment, das von dem Verbrennungsmotor emittiert wird und 80 bis 100% des maximal erreichbaren Drehmoments, das beim Betrieb mit dem aktuellen Kraftstoff emittiert wird, darstellt.

The method may include the following step:

• Determining the result at a prevailing torque emitted by the engine and representing 80 to 100% of the maximum achievable torque emitted when operating with the current fuel.

The method can be used in existing vehicles. Program code comprising operations according to the invention may be installed in a control device of the vehicle during manufacture thereof. A buyer of the vehicle may thus be given the opportunity to select the performance function of the method as an additional option. Alternatively, program code to perform the innovative method may be installed in a control device of the vehicle when retrofitted in a workshop. In this case, the program code can be loaded into a memory in the control device. The implementation of the method according to the invention is therefore cost-effective, in particular since, according to one aspect of the invention, no further sensors have to be installed in the vehicle. The invention thus provides a cost effective solution to the aforementioned problems.

The program code of the system to control the operation of a motor vehicle may be updated or replaced. In addition, different parts of the program code for the system can be independently replaced. This modular configuration is advantageous from a maintenance point of view.

According to one aspect of the invention, a system for controlling the operation of a motor vehicle is provided, wherein the operation is adapted to the occurrence of FAME in the fuel for an internal combustion engine of the motor vehicle.

• – Elemente, die geeignet sind, um einen FAME-Gehalt in dem Kraftstoff zu bestimmen;
• – Elemente, die geeignet sind, um die Ergebnisse in mindestens einem der Parameter Motordrehmoment, Abgastemperatur und NO_x-Gehalt in den Abgasen aus dem Verbrennungsmotor beim Betrieb mit dem aktuellen Kraftstoff und beim Betrieb mit einer hohen Motorbelastung, die wesentlich anders als der Leerlauf ist, zu bestimmen;
• – Elemente, die geeignet sind, um die Ergebnisse mit Ergebnissen bezüglich dieser Parameter beim Betrieb mit einem Referenzkraftstoff und beim Betrieb mit einer entsprechend hohen Motorbelastung zu vergleichen;
• – Elemente, die geeignet sind, um den FAME-Gehalt in dem Kraftstoff basierend auf dem Vergleich als Grundlage für die Anpassung zu bestimmen.

The system includes the following:

• Elements suitable to determine a FAME content in the fuel;
• Elements suitable to show the results in at least one of the parameters engine torque, exhaust gas temperature and NO _x content in the exhaust gases from the internal combustion engine when operating with the current fuel and operating at a high engine load which is substantially different than the idling to determine;
• - Elements suitable for comparing the results with results relating to these parameters when operating on a reference fuel and when operating with a correspondingly high engine load;
• Elements which are suitable for determining the FAME content in the fuel based on the comparison as the basis for the adaptation.

According to one aspect of the invention, a system for controlling the operation of a motor vehicle is provided, wherein the operation is adapted to the occurrence of FAME in the fuel for an internal combustion engine of the motor vehicle.

• – Elemente, die geeignet sind, um einen FAME-Gehalt in dem Kraftstoff zu bestimmen;
• – Elemente, die geeignet sind, um Ergebnisse in allen Parametern von Motordrehmoment, Abgastemperatur und NO_x-Gehalt in den Abgasen aus dem Verbrennungsmotor beim Betrieb mit dem aktuellen Kraftstoff und beim Betrieb mit einer hohen Motorbelastung, die wesentlich anders als der Leerlauf ist, zu bestimmen;
• – Elemente, die geeignet sind, um die Ergebnisse mit Ergebnissen bezüglich dieser Parameter beim Betrieb mit einem Referenzkraftstoff und beim Betrieb mit einer entsprechend hohen Motorbelastung zu vergleichen;
• – Elemente, die geeignet sind, um den FAME-Gehalt in dem Kraftstoff basierend auf dem Vergleich als Grundlage für die Anpassung zu bestimmen.

The system includes the following:

• Elements suitable to determine a FAME content in the fuel;
• Elements capable of producing results in all parameters of engine torque, exhaust gas temperature and NO _x content in the exhaust gases from the internal combustion engine when operating with the current fuel and operating at a high engine load, which is substantially different than the idling determine;
• - Elements suitable for comparing the results with results relating to these parameters when operating on a reference fuel and when operating with a correspondingly high engine load;
• Elements which are suitable for determining the FAME content in the fuel based on the comparison as the basis for the adaptation.

• – Elemente, die geeignet sind, um basierend auf dem somit bestimmten FAME-Gehalt einen Gehaltsbereich aus einem vorbestimmten Satz von vorbestimmten Gehaltsbereichen auszuwählen.

The system may include:

• Elements suitable for selecting a content range from a predetermined set of predetermined content ranges based on the thus-determined FAME content.

• – Elemente, die geeignet sind, um für den somit ausgewählten Gehaltsbereich einen Satz von Steuerparametern zur Steuerung des Betriebs des Kraftfahrzeugs zu bestimmen.

The system may include:

• Elements suitable for determining, for the thus-selected content range, a set of control parameters for controlling the operation of the motor vehicle.

• – Elemente, die geeignet sind, um das Ergebnis bei einer vorherrschenden Belastung des Verbrennungsmotors, die 80 bis 100% der maximal erreichbaren Belastung beim Betrieb mit dem aktuellen Kraftstoff darstellt, zu bestimmen.

The system may include:

• Elements suitable for determining the result at a prevailing load of the internal combustion engine representing 80 to 100% of the maximum attainable load when operating with the current fuel.

• – Elemente, die geeignet sind, um das Ergebnis bei einer vorherrschenden Leistungsabgabe, die von dem Verbrennungsmotor emittiert wird und 80 bis 100% der maximal erreichbaren Leistungsabgabe darstellt, die beim Betrieb mit dem aktuellen Kraftstoff emittiert wird, zu bestimmen.

The system may include:

• Elements suitable for determining the result at a prevailing power output emitted by the internal combustion engine representing 80 to 100% of the maximum achievable power output emitted during operation with the current fuel.

• – Elemente, die geeignet sind, um das Ergebnis bei einem vorherrschenden Drehmoment von dem Verbrennungsmotor, das 80 bis 100% des maximal erreichbaren Drehmoments beim Betrieb mit dem aktuellen Kraftstoff darstellt, zu bestimmen.

The system may include:

• Elements suitable for determining the result at a prevailing torque from the internal combustion engine representing 80 to 100% of the maximum attainable torque when operating with the current fuel.

The above objects are also achieved with a motor vehicle including the SCR system. The motor vehicle may be a truck, a bus or a car.

According to one aspect of the invention, there is provided a computer program for controlling the operation of a motor vehicle, the operation being adapted to the occurrence of FAME in the fuel for an internal combustion engine of the motor vehicle, the computer program comprising program code stored on a computer readable medium, to cause an electronic control device or other computer connected to the electronic control device to perform the steps of any one of claims 1 to 4.

According to one aspect of the invention, there is provided a computer program for controlling the operation of a motor vehicle, wherein the operation is adapted to the occurrence of FAME in the fuel for an internal combustion engine of the motor vehicle, the computer program comprising program code for causing an electronic control device or another computer connected to the electronic control device, carries out the steps according to one of claims 1 to 4.

According to one aspect of the invention, a computer program product becomes the program code comprises, stored on a computer-readable medium, provided to carry out the method steps according to one of claims 1 to 4, when the program code is executed in an electronic control device or in another computer which is connected to the electronic control device.

Additional objects, advantages and novel features of the present invention will be apparent to those skilled in the art based on the following details and by practicing the invention. Although the invention will be described below, it is to be understood that the invention is not limited to the specific details described. Those skilled in the art having access to the present teachings will recognize additional applications, changes and limitations in other areas that are within the scope of the invention.

GENERAL DESCRIPTION OF THE DRAWINGS

For a more complete understanding of the present invention and its additional objects and advantages, reference is now made to the following detailed description, taken in conjunction with the accompanying drawings, in which the same reference characters belong to identical parts throughout the several figures. Show it:

1 schematically a vehicle according to an embodiment of the invention;

2a schematically a subsystem of the vehicle, in 1 is depicted, according to an embodiment of the invention;

2 B schematically a subsystem of the vehicle, in 1 is displayed, according to an embodiment of the invention;

3a schematically a diagram illustrating the invention according to one aspect of the invention;

3b schematically a diagram illustrating the invention according to one aspect of the invention;

3c schematically a diagram illustrating the invention according to one aspect of the invention;

3d schematically a diagram according to an aspect of the invention;

3e schematically a diagram according to an aspect of the invention;

4a schematically a flowchart of a method according to an embodiment of the invention;

4b schematically, a flowchart of a method according to an embodiment of the invention; and

5 schematically a computer according to an embodiment of the invention.

DETAILED DESCRIPTION OF THE FIGURES

A side view of a vehicle 100 is related to 1 shown. The exemplary vehicle 100 consists of a towing vehicle 110 and a trailer 112 , The vehicle may be a heavy duty truck, such as a truck or a bus. The vehicle can also be a car.

As used herein, the term "connection" refers to a communication connection that is a physical line, such as an opto-electronic communication line, or a non-physical line, such as a wireless connection, e.g. B. a radio or high frequency connection, can act.

As used herein, the term "channel" means a passageway for containing and transporting a fluid, such as a reducing agent, in liquid form. The channel can be a channel of any dimension. The channel may be made of any suitable material, such as plastic, rubber or metal.

As used herein, the terms "reducing agent" or "reductor" mean a substance that is used to react with certain emissions in an SCR system. These emissions may be, for example, a NO _x gas. The terms "reductor" and "reducing agent" are used herein as synonyms. The reducing agent is also designated AdBlue according to one embodiment. Of course, other types of reducing agents can be used. Here, AdBlue is provided as an example of a reducing agent.

It should be noted that the invention is suitable for use with all suitable engine systems and thus is not limited to the engine systems of vehicles. The method according to the invention and the system according to the invention, according to one aspect of the invention, are well suited for platforms other than motor vehicles comprising an engine, such as watercraft. The watercraft can be of any kind, such as motor boats, ships, ferries or sea vans.

For example, the method according to the invention and the system according to the invention are also well suited for systems comprising industrial and / or motorized industrial robots according to one aspect of the invention.

The method according to the invention and the system according to the invention are also good for various power plants, e.g. As power plants, which include a diesel generator suitable.

The method according to the invention and the system according to the invention are also suitable for any suitable engine system comprising an engine, such as in a locomotive or other platform.

The method according to the invention and the system according to the invention are also well suited for any suitable engine system comprising a NO _x generator.

2a shows a subsystem 299 in the vehicle 100 , The subsystem 299 is in the towing vehicle 110 arranged. The subsystem 299 can be part of an SCR system. The subsystem 299 includes according to this example a container 205 which is arranged to contain a reducing agent. The container 205 is arranged to contain an appropriate amount of reducing agent.

A first channel 271 is set up to remove the reducing agent from the container 205 to a pump 231 respectively. The pump 231 can be any suitable pump. The pump may be configured to be actuated by an electric motor. The pump 231 is set up to remove the reducing agent from the container 205 over the first channel 271 and a second channel 272 pump up the reducing agent to a metering device 250 add. The dosing device 250 includes an electrically controlled metering valve through which a reductant flow added to the exhaust system can be controlled. The pump 231 is set up to the reducing agent in the second channel 272 to put pressure on. The dosing device 250 is arranged with a throttle device against which the pressure of the reducing agent in the subsystem 299 is built.

The dosing device 250 is arranged to the reducing agent to an exhaust system (see 2 B ) in the vehicle 100 add. More specifically, the metering device 250 configured to control a suitable amount of reducing agent to an exhaust system in the vehicle 100 add. According to this embodiment, an SCR catalyst (not shown) is installed downstream of a position in the exhaust system to which the reducing agent is added. The amount of reductant added to the exhaust system is intended to reduce the amount of unwanted emissions, e.g. B. NO _x to reduce.

The dosing device 250 For example, it is configured on an exhaust passage to exhaust from an internal combustion engine 230 (please refer 2 B ) of the vehicle 100 lead to the SCR catalyst.

A third channel 273 is between the metering device 250 and the container 205 set up. The third channel 273 is set to a certain amount of the reducing agent, that of the metering device 250 was fed to the container 205 due.

The first control device 200 is for communication with the pump 231 established via a connection L292. The first control device 200 is set up to operate the pump 231 For example, to control the flow of reductant within the subsystem 299 to control. The first control device 200 is set up to operate the pump 231 to control, whereby the local electric motor is controlled.

The first control device 200 is for communication with the dosing device 250 set up via an L250 connection. The first control device 200 is set up to operate the dosing device 250 to control, for example, the supply of reducing agent to the exhaust system of the vehicle 100 to control. The first control device 200 is set up to operate the dosing device 250 to control, for example, the re-supply of reducing agent to the container 205 to control.

The first control device 200 is configured to determine results in at least one of engine torque, exhaust temperature, and NO _x content in the exhaust gases from the engine when operating with the current fuel and operating at a high engine load that is substantially different than idling. The first control device 200 is set up to compare the results with results relating to these parameters when operating with a reference fuel and when operating with a correspondingly high engine load. The first control device 200 is arranged to determine the FAME content in the fuel based on the comparison as the basis for the adjustment.

The results regarding the respective parameters when operating with a reference fuel may be stored in a memory of the first control device 200 get saved.

The first control device 200 may be arranged to select a salary range from a predetermined set of predetermined salary ranges based on the thus-determined FAME content. The first control device 200 may be arranged to provide, for the thus selected salary range, a set of control parameters for controlling the operation of the motor vehicle 100 select. The first control device 200 may be arranged to determine the results at a prevailing engine load that is 80 to 100% of the maximum achievable load when operating on the current fuel. The first control device 200 may be configured to determine the results at a prevailing power output that is emitted by the engine and represents 80 to 100% of the maximum achievable power output that is emitted when operating with the current fuel. The first control device 200 may be configured to determine the results at a prevailing torque emitted by the internal combustion engine representing 80 to 100% of the maximum achievable torque emitted when operating on the current fuel.

The predetermined set of predetermined salary ranges may be stored in a memory of the first control device 200 get saved.

The predetermined set of predetermined salary ranges may be a suitable set of salary ranges.

According to one embodiment, the predetermined set of predetermined salary ranges includes 4 salary ranges, e.g. 0 to 25%, 26 to 50%, 51 to 75 and 76 to 100%.

According to one embodiment, the predetermined set of predetermined salary ranges comprises 3 salary ranges, e.g. 0 to 33%, 34 to 66% and 67 to 100%.

According to one embodiment, the predetermined set of predetermined salary ranges includes 10 salary ranges, e.g. 0 to 10%, 11 to 20%, 21 to 30%, 31 to 40%, 41 to 50%, 51 to 60%, 61 to 70%, 71 to 80%, 81 to 90% and 91 to 100 %.

Each such pay range is associated with a unique set of control parameters for the operation of the vehicle 100 connected.

Each such pay range is provided with a unique set of control parameters for operating at least one suitable system of the vehicle, e.g. B. an engine system 230 , an SCR system 299 and / or an aftertreatment system 289 (please refer 2 B ), connected.

For each salary range, a unique representation with control parameters in a memory of the first control device 200 be saved. Alternatively, a unique representation with control parameters in a memory of a second controller 210 be saved.

In this case, the first control device 200 configured to operate at least one suitable component in the vehicle 100 based on the determined FAME content in the fuel of the vehicle. Examples of such components are a metering device 250 , an engine 230 and / or a feed pump 231 (please refer 2 B )

A second control device 210 is for communication with the first control device 200 set up via a connection L210. The second control device 210 can be detachable with the first control device 200 be connected. The second control device 210 may be a control device outside the vehicle 100 be. The second control device 210 may be arranged to carry out the method steps according to the invention. The second control device 210 can be used to provide corrected control variables / program code to the first controller 200 in particular program code in order to carry out the method according to the invention. Alternatively, the second control device 210 for communication with the first control device 200 be set up via an internal network in the vehicle. The second control device 210 may be configured to perform functions substantially similar to the first control device 200 such as determining a FAME content in the fuel in the vehicle as a basis for adjusting the operation to the occurrence of FAME in the fuel for an internal combustion engine in the motor vehicle 100 , The method according to the invention can by the first control device 200 or by the second control device 210 or both by the first control device 200 as well as the second control device 210 be executed.

2 B shows a subsystem 289 in the vehicle 100 , The subsystem 289 is in the towing vehicle 110 set up.

In operation, a motor causes 230 an exhaust flow, which passes through a first passage 235 to an SCR catalyst arrangement 260 to be led. A second passage 245 is set up to exhaust gases to an environment of the vehicle 100 respectively.

The first control device 200 is set up to operate the engine 230 to control. The first control device 200 is set to, for example, the dosage of fuel for the combustion chambers in the engine 230 to control. The first control device is for communication with the engine 230 set up via a connection L230.

The first control device 200 is set up to operate the dosing device 250 to control the reductant in the first pass 235 feed. In this case, the injected reducing agent can evaporate to a mixture of exhaust gases and reducing agent for treatment with the SCR catalyst assembly 260 to reach.

A first NO _x sensor 240 is upstream of the SCR catalyst assembly 260 in the first passage 235 set up. The first NO _x sensor 240 is for communication with the first control device 200 set up via a connection L240. The first NO _x sensor 240 is arranged to constantly a prevailing NO _x content in the first passageway 235 to determine. The first NO _x sensor 240 is arranged to constantly signals, which comprise information on a prevailing NO _x content, to the first control device 200 via the L240 connection.

A second NO _x sensor 270 is downstream of the SCR catalyst assembly 260 in the second passage 245 set up. The second NO _x sensor 270 is for communication with the first control device 200 set up via a connection L270. The second NO _x sensor 270 is arranged to constantly a prevailing NO _x content in the second passage 245 to determine. The second NO _x sensor 270 is arranged to constantly signals, which comprise information on a prevailing NO _x content, to the first control device 200 via the L240 connection.

The first NO _x sensor 240 and the second NO _x sensor 270 can be used to obtain information about prevailing NO _x levels in the first pass 235 and the second passage 245 provide. In this case, the first control device 200 be set up based on this information according to reducing agent in the first pass 235 feed.

According to one embodiment, the first control device 200 be set to a prevailing NO _x content in the first pass 235 and the second passage 245 to determine via a computational model stored in a memory. Thus, the first control device 200 based on information about the calculated prevailing NO _x content in the first pass 235 and the second passage 245 corresponding reducing agent in the first pass 235 feed.

A temperature sensor 280 is upstream of the SCR catalyst assembly 260 at the first passage 235 set up. The temperature sensor 280 is for communication with the first control device 200 set up via a connection L280. The temperature sensor 280 is set to constantly maintain a prevailing temperature Temp of the exhaust gases in the first pass 235 to determine. The first temperature sensor 280 is arranged to continuously signals, which include information about a prevailing temperature Temp of the exhaust gases, to the first control device 200 via the L280 connection.

According to one embodiment, the first control device 200 configured to have, via a computational model stored therein, a prevailing temperature Tmod of the exhaust gases in the first pass 235 to determine. The calculated prevailing temperature Tmod of the exhaust gases in the first pass 235 can z. B. based on a specific exhaust gas mass flow and a measurement of the amount of fuel that the engine 230 is supplied, are determined.

According to one embodiment, the first control device 200 configured to calculate / model / estimate a prevailing exhaust mass flow MF from the vehicle engine. The exhaust mass flow MF may be determined based on information about the supplied air mass, the amount of fuel and the temperature. The parameters used for the calculation may be the first controller 200 be provided accordingly. The determined exhaust mass flow MF may be in the optimization of the operation of the engine with respect to the type of prevailing fuel, e.g. As diesel, FAME or a mixture thereof may be included.

A sensor (not shown) to measure a prevailing mass exhaust flow MF may be in the first pass 235 be furnished. The exhaust mass flow sensor is configured to constantly maintain a prevailing exhaust mass flow MF in the first pass 235 to measure and signals that include information about it, to the first control device 200 via a connection intended for this purpose (not shown).

According to one embodiment, the first control device 200 to set a prevailing exhaust mass flow MF in the first pass through a computational model stored therein 235 to determine. The predominant exhaust mass flow MF in the first pass 235 For example, based on a particular operating mode of the engine 230 be determined.

The first control device 200 is arranged to constantly determine a prevailing engine torque T. This can be done in a suitable manner.

3a schematically illustrates a diagram according to the present invention. It shows how a maximum available engine torque in a particular driving mode of the vehicle 100 changes depending on whether the fuel contains FAME or not.

In a first graph D11, a maximum torque T is given as a function of the time t. The first graph D11 is an illustration of the maximum available torque when the fuel comprises 100% diesel. This is a reference fuel according to an embodiment of the present invention. The first graphic D11 provides a reference graph that is linked to the reference fuel.

In a second graph D21, a prevailing maximum torque T is provided as a function of time t. The first graph D21 is an illustration of the maximum available torque when the fuel comprises an unknown amount / FAME content. The fuel is a current fuel for which the FAME content is to be determined. The fuel may be a mixture of diesel and FAME, for example.

By determining a difference between the maximum available engine torque at a time t1 for the reference fuel and for the current fuel, the FAME content in the fuel may be determined. This can be done with workflows included in the first control device 200 are stored.

3a shows that FAME has a lower energy content per unit mass, so that the maximum available engine torque is less than for a more fuel-rich fuel.

The difference between the values in the first graph D11 and the second graph D21 at a certain time is substantially proportional to a FAME content in the fuel.

The difference between the values in the first graph D11 and the second graph D21 at a given time is based on an operating mode in the vehicle, which is a relatively high load on the engine 230 includes, determined.

3b schematically illustrates a diagram according to one aspect of the present invention. It shows how a NO _x content in the exhaust gases of the engine 230 in a certain driving mode of the vehicle 100 changes depending on whether the fuel contains FAME or not.

In a first graph D12, a predetermined / measured NO _x content is provided as a function of time t. D12 The first chart is an illustration of a NO _x content, wherein the fuel comprises 100% diesel. This is a reference fuel according to an embodiment of the present invention. The first graphic D12 provides a reference graph that is linked to the reference fuel.

In a second graphics D22 a prevailing NO _x content as a function of time t is provided. The second graph D22 is a representation of the prevailing NO _x content when the fuel comprises an unknown amount / FAME content. The fuel is a current fuel for which the FAME content is to be determined. For example, the fuel may be a mixture of diesel and FAME.

By determining a difference between the NO _x contents at a time t 1 for the reference fuel and the predominant fuel, a FAME content in the fuel may be determined. This can be done with workflows included in the first control device 200 are stored. Alternatively, this can be done with workflows that in the second control device 210 are stored.

3b shows that the fuel that includes FAME compared to when the engine 230 only operated with diesel, achieved a higher NO _x content.

The difference between the values in the first graph D12 and the second graph D22 at a particular time is substantially proportional to a FAME content in the fuel.

The difference between the values in the first graph D12 and the second graph D22 at a certain time becomes in an operating mode in the vehicle 100 that puts a relatively high load on the engine 230 includes, determined.

3c illustrates a diagram according to one aspect of the present invention. It shows how a temperature Temp of the exhaust gases of the engine 230 in a certain driving mode of the vehicle 100 changes depending on whether the fuel contains FAME or not.

In a first graph D13, a predetermined / measured exhaust gas temperature of the engine is provided as a function of time t. The first graph D13 is a representation of the temperature, wherein the fuel comprises 100% diesel. This is a reference fuel according to an embodiment of the present invention. The first graphic D13 provides a reference graph that is linked to the reference fuel.

In a second graph D23, a prevailing temperature Temp is provided as a function of time t. The second graph D23 is a representation of the prevailing temperature when the fuel comprises an unknown amount / unknown FAME content. The fuel is a current fuel for which the FAME content is to be determined. For example, the fuel may be a mixture of diesel and FAME.

By determining a difference between the temperatures at time t1 for the reference fuel and the predominant fuel, the FAME content in the fuel may be determined. This can be done with workflows included in the first control device 200 are stored.

3c shows that the fuel that includes FAME compared to when the engine 230 only operated with diesel, a lower temperature is reached.

The difference between the values in the first graph D13 and the second graph D23 at a certain time is substantially proportional to a FAME content in the fuel.

The difference between the values in the first graph D13 and the second graph D23 at a certain time becomes in an operation mode in the vehicle 100 that puts a relatively high load on the engine 230 includes, determined.

Thereby, the determined FAME content is linked to a predetermined range of FAME contents in the current fuel.

According to one embodiment, there may be 4 predetermined ranges for FAME contents in the fuel, e.g. 0 to 25%, 26 to 50%, 51 to 75% and 76 to 100%.

In the case where it is determined that a prevailing FAME content in the fuel is 18%, it is determined that the first range of 0 to 25% is an appropriate range. This area is associated with a predetermined set of control parameters that the first control device 200 used to control the operation of the vehicle.

If it is determined that a predominant FAME content in the fuel 55 is determined, the third range is 51 to 75% a suitable range. This area is associated with a predetermined set of control parameters that the first control device 200 used to control the operation of the vehicle.

3d schematically illustrates a diagram according to one aspect of the invention. At this time, the HC deposit HC Ack becomes a function of the temperature T after a filter (not shown), such as a DPF (Diesel Particulate Filter), in the exhaust system of the vehicle 100 displayed. The HC deposit HC Ack refers to the ability of the filter to store HC at low temperatures, and this capability decreases at an elevated temperature. The HC deposit HC Ack is provided as a percentage (%), and the temperature T is provided in degrees Celsius.

A first graph D relates to an HC deposit HC Ack, in which the fuel is only diesel. A second graph F relates to HC deposit HC Ack, where the fuel is only FAME.

It shows that the HC deposition varies significantly when operating with diesel and FAME for certain temperatures of the filter. At a temperature T of, for example, 220 degrees Celsius, the HC deposits differ by almost 80%.

According to the method of the invention, which includes automatically determining the FAME content in the fuel, appropriate adjustments to the control of various systems in the vehicle may be made. According to the method of the invention, which includes automatically determining the FAME content in the fuel, a corresponding adjustment of the operation of the vehicle 100 be executed. For example, compliance with current emission standards can be achieved. The triggering of an undesirable exothermic reaction in the event of adverse operating conditions in the vehicle can also be avoided.

It should be noted that it is important for vehicles that sometimes run on diesel, FAME or a mixture of diesel and FAME, that the first control device 200 taking into account the composition of the fuel, thus optimizing, for example, the current engine settings to ensure that emissions remain below a legal level, but also to avoid an exothermic reaction as the characteristics of the different types of fuel are so pronounced differ from each other.

3e schematically illustrates a diagram according to one aspect of the invention. In this case, the HC mass flow rate HC MF is mapped as a function of the temperature T of the filter. The HC mass flow HC MF means evaporation. At low filter temperatures, the HCs are stored in the filter while the stored HCs evaporate at relatively high temperatures. The function is essentially the same for diesel and FAME, but the content of storage and evaporation is significantly different between diesel and FAME. The HC mass flow rate HC MF is provided in grams / second, and the temperature T is provided in degrees Celsius.

A first graph D relates to the HC mass flow HC MF, where the fuel is only diesel. A second graph F relates to the HC mass flow HC MF, where the fuel is just FAME.

It shows that the HC mass flow HC MF differs significantly when operating with diesel and FAME for certain temperatures of the filter. At a temperature T of, for example, 250 degrees Celsius, the HC mass flow rates HC MF differ by about 75%.

It should be noted that in view of this aspect, for vehicles sometimes operated with diesel, FAME or a mixture of diesel and FAME, it is important that the first control device 200 taking into account the composition of the fuel, thus optimizing, for example, the current engine settings to ensure that emissions remain below a legal level, but also to avoid an exothermic reaction, as the characteristics of the different types of fuel differ so significantly ,

• – Bestimmen des Ergebnisses für mindestens einen der Parameter Motordrehmoment, Abgastemperatur und NO_x-Gehalt in den Abgasen aus dem Verbrennungsmotor beim Betrieb mit dem aktuellen Kraftstoff und beim Betrieb mit einer hohen Motorbelastung, die wesentlich anders als der Leerlauf ist;
• – Vergleichen der Ergebnisse mit Ergebnissen bezüglich dieser Parameter beim Betrieb mit einem Referenzkraftstoff und beim Betrieb mit einer entsprechend hohen Motorbelastung;
• – Bestimmen des FAME-Gehalts in dem Kraftstoff, basierend auf dem Vergleich, als Grundlage für die Anpassung. Nach dem Verfahrensschritt s401 ist das Verfahren beendet.

4a FIG. 12 schematically illustrates a flowchart of a method for controlling the operation of a motor vehicle, wherein the operation is adapted to the occurrence of FAME in the fuel for an internal combustion engine of the motor vehicle, according to an aspect of the present invention. The method includes an initial method step s401. The method step s401 comprises the following steps:

• Determining the result for at least one of engine torque, exhaust gas temperature, and NO _x content in the exhaust gases from the internal combustion engine when operating with the current fuel and when operating at a high engine load that is substantially different than idling;
• Comparing the results with results relating to these parameters when operating with a reference fuel and operating at a correspondingly high engine load;
• Determining the FAME content in the fuel based on the comparison as the basis for the adjustment. After method step s401, the method is ended.

4b FIG. 12 schematically illustrates a flowchart of a method for controlling the operation of a motor vehicle, wherein the operation is adapted to the occurrence of FAME in the fuel for an internal combustion engine of the motor vehicle, according to an aspect of the present invention.

The method includes an initial method step s410. The method step s410 includes the step of determining whether a predetermined condition exists in the vehicle 100 prevails. If the condition prevails, the method according to the invention is activated. An example of such a predetermined state is that the engine 230 of the vehicle is not operated in idle. Another example of such a predetermined state is that the engine 230 of the vehicle with a load representing 80 to 100% of the maximum achievable load is actuated. If the condition prevails, a subsequent process step s420 is executed. Another example of such a predetermined state is that the engine 230 of the vehicle is actuated with a power output which is output by the internal combustion engine and represents 80 to 100% of the maximum achievable power output. Another example of such a predetermined state is that the engine 230 of the vehicle is operated with a torque that is output by the internal combustion engine and represents 80 to 100% of the maximum deliverable torque.

The method step s420 includes the step of determining the results in at least one of the parameters engine torque T, exhaust temperature Temp, and NO _x content in the exhaust gases from the internal combustion engine 230 , According to one embodiment, this is when operating with the current fuel and operating at a high engine load, which is significantly different than the idle, or when the predetermined state of the vehicle 100 in step s410.

The method step s420 may be the determination of a prevailing engine torque T in the engine 230 include. This can be done with the first control device 200 be executed. Can s420 the step determining a prevailing NO _x content in the exhaust gases from the engine 230 include. This can be done with workflows included in the first control device 200 stored are executed. This can be done with the first NO _x sensor 240 and / or the second NO _x sensor 270 be executed. The method step s420 may include determining a prevailing temperature Temp. This can be done with the temperature sensor 280 be executed. The method step s420 may include determining a modeled prevailing temperature Tmod of the exhaust gases of the engine with operations performed in the first control device 200 are stored. After method step s420, a subsequent method step s430 is ended.

The method step s430 comprises the step of comparing the result with the results with respect to the corresponding parameters when operating with a reference fuel and when operating with a correspondingly high engine load. This will be with reference to 3a to 3b described in more detail. After method step s430, a subsequent method step s440 is ended.

The method step s440 includes the step of determining the FAME content in the fuel based on the comparison as the basis for the adjustment. This can be done with the first control device 200 be executed. The particular FAME content in the fuel is linked to a corresponding predefined FAME range. Method step s440 may include the step of selecting a salary range from a predetermined set of predetermined salary ranges based on the thus determined FAME content. After method step s440, a subsequent method step s450 is ended.

The method step s450 comprises for the thus selected FAME content range the step of determining a set of control parameters for controlling the operation of the motor vehicle. After method step s450, a subsequent method step s460 is ended.

The method step s460 includes the step of controlling at least one system / device / component in the vehicle based on the thus selected FAME content range. The controller may, for example, control the metering device 250 , of the motor 230 , the pump 230 or other suitable device in the vehicle 100 affect. The controller can z. B. feeding fuel into a DOC device in the first pass 235 affect. For example, the controller may be the control variables in the engine 230 such as injection timing, mode handling, fuel quantity correction, timing, EGR rate (%), rail pressure, turbocharging, etc. of the engine 230 for heating measures in a vehicle aftertreatment system 100 to reach. After method step s460, the method is ended.

Regarding 5 is a diagram of an embodiment of a device 500 shown. The control devices 200 and 210 related to 2 In one embodiment, the unit may be described 500 include. The unit 500 includes a non-volatile memory 520 , a data processing unit 510 and a read / write memory 550 , The non-volatile memory 520 has a first memory part 530 in which a computer program, such as an operating system, is stored to the function of the unit 500 to control. Further, the unit includes 500 a bus controller, a serial communication port, an I / O device, an A / D converter, a date and time inputting and transmission unit, an event counter, and an interrupt controller (not shown). The non-volatile memory 520 also has a second memory part 540 on.

A computer program P is provided which includes operational procedures for controlling the operation of a motor vehicle whose operation is adapted to the occurrence of FAME in the fuel for an internal combustion engine of the motor vehicle.

The computer program P includes operations that determine a FAME content in the fuel.

The computer program P includes operations to determine the results for at least one of the parameters engine torque, exhaust gas temperature, and NO _x content in the exhaust gases from the engine when operating with the current fuel and when operating at a high engine load that is significantly different than idling, to determine. The computer program P includes operations to compare the result with results regarding the corresponding parameters when operating with a reference fuel and when operating with a correspondingly high engine load. The computer program P includes operations to determine the FAME content in the fuel based on the comparison as the basis for the adjustment.

The computer program P includes operations to select a salary range from a predetermined set of predetermined salary ranges based on the thus determined FAME content.

Computer program P includes operations to determine a set of control parameters for controlling the operation of the motor vehicle for the salary range thus selected.

The computer program P includes operations to determine the result at a predominant load on the engine representing 80 to 100% of the maximum achievable load when operating on the current fuel.

The computer program P may be executable or compressed in a memory 560 and / or a read / write memory 550 be saved.

The statement that the data processing unit 510 Performing a specific function means that the data processing unit 510 a certain part of the program that is in the memory 560 is stored, or a certain part of the program, in the read / write memory 550 is stored, executes.

The data processing unit 510 can with a data connection 599 via a data bus 515 communicate. The non-volatile memory 520 is for communication with the data processing unit 510 via a data bus 512 thought. The separate storage 560 is for communication with the data processing unit 510 via a data bus 511 thought. The read / write memory 550 is for communication with the data processing unit 510 via a data bus 514 set up. The links L210, L230, L240, L250, L270, L280, and L292 may be e.g. B. with the data connection 599 be connected (see 2a and 2 B ).

If at the data port 599 Data are received, they are temporarily in the second memory part 540 saved. When the received input data is temporarily stored, the data processing unit is 510 ready to execute the execution of code as described above. According to one embodiment, the signals present at the data port 599 receive information about a prevailing mass flow in the exhaust gases in the first pass 235 , According to one embodiment, the signals present at the data port 599 receive information about a prevailing temperature Tmeas in the exhaust gases in the first pass 235 , According to one embodiment, the signals present at the data port 599 receive information about the NO _x content in the exhaust gases in the first pass 235 , According to one embodiment, the signals present at the data port 599 receive information about the NO _x content in the exhaust gases in the second pass 245 , The signals connected to the data port 599 can be received from the device 500 used to determine the FAME content in the fuel of the vehicle to the operation of the vehicle 100 to adapt to the particular FAME content in the fuel.

Parts of the methods described herein may be of the unit 500 based on the data processing unit 510 Running the program that runs in the memory 560 or the read / write memory 550 is stored. If the unit 500 running the program, the workflows described here are executed.

The foregoing description of the preferred embodiments of the present invention has been presented for purposes of illustration and description. It is not intended to be exhaustive or to limit the invention to the variants described. Numerous changes and variations will be apparent to those skilled in the art. The embodiments have been chosen and described in order to explain the principles of the invention and their practical applications as well as possible, thereby enabling those skilled in the art to appreciate the invention with regard to various embodiments thereof and with the various changes that are desired use are applicable to understand.

Claims (12)

Method for controlling the operation of a motor vehicle ( 100 ), the operation being due to the presence of FAME in fuel for an internal combustion engine ( 230 ) of the motor vehicle ( 130 ), comprising the following step: determining a FAME content in the fuel, characterized by the following steps: determining results (s420) for at least one of the parameters engine torque, exhaust gas temperature and NO _x content in exhaust gases from the internal combustion engine ( 230 ) when operating with the current fuel and operating at a high engine load, which is significantly different than idling; Comparing (s430) the results with results relating to these parameters when operating with a reference fuel and operating at a correspondingly high engine load; Determining (s440) the FAME content in the fuel based on the comparison as the basis for the adjustment. The method of claim 1, comprising the following step: Based on the thus determined FAME content, selecting a salary range from a predetermined set of predetermined salary ranges. Method according to claim 2, comprising the following step: For the thus selected salary range, determining (s450) a set of control parameters to control the operation of the motor vehicle. Method according to one of the preceding claims, comprising the following step: - Determining the result at a predominant load of the engine, which represents 80 to 100% of the maximum achievable load when operating with the current fuel. A system for controlling the operation of a motor vehicle adapted to the occurrence of FAME in the fuel for an internal combustion engine of the motor vehicle, comprising: elements suitable for determining a FAME content in the fuel, characterized by: Elements suitable to determine results for at least one of engine torque, exhaust gas temperature and NO _x content in exhaust gases from the internal combustion engine when operating with the current fuel and operating at a high engine load substantially different than idling ; - Elements suitable for comparing the results with results relating to these parameters when operating on a reference fuel and when operating with a correspondingly high engine load; Elements which are suitable for determining the FAME content in the fuel based on the at least one comparison as the basis for the adaptation. The system of claim 5, comprising: Elements suitable for selecting a content range from a predetermined set of predetermined content ranges based on the thus-determined FAME content. The system of claim 6, comprising: Elements suitable for determining, for the thus-selected content range, a set of control parameters for controlling the operation of the motor vehicle. A system according to any one of claims 5 to 7, comprising; Elements suitable for determining the result at a prevailing load of the internal combustion engine representing 80 to 100% of the maximum attainable load when operating with the current fuel. Motor vehicles ( 100 ; 110 ) comprising a system according to any one of claims 5 to 8. Motor vehicle ( 100 ; 110 ) according to claim 9, wherein the motor vehicle is a truck, a bus or a car. Computer program (P) for controlling the operation of a motor vehicle whose operation is adapted to the occurrence of FAME in fuel for an internal combustion engine of the motor vehicle, the computer program (P) comprising program code for causing an electronic control device ( 200 ; 500 ) or another computer ( 210 ; 500 ) connected to the electronic control device ( 200 ; 500 ) is executed, the steps according to one of claims 1 to 4 executes. A computer program product comprising program code stored on a computer-readable medium for carrying out the method steps according to one of claims 1 to 4, when the program code is stored in an electronic control device ( 200 ; 500 ) or in a computer ( 210 ; 500 ) connected to the electronic control device ( 200 ; 500 ) is connected.

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