EP1518213A1 - A method for collecting data from a motor-driven vehicle - Google Patents

A method for collecting data from a motor-driven vehicle

Info

Publication number
EP1518213A1
EP1518213A1 EP03733715A EP03733715A EP1518213A1 EP 1518213 A1 EP1518213 A1 EP 1518213A1 EP 03733715 A EP03733715 A EP 03733715A EP 03733715 A EP03733715 A EP 03733715A EP 1518213 A1 EP1518213 A1 EP 1518213A1
Authority
EP
European Patent Office
Prior art keywords
recording
data file
data
motor
vehicle
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP03733715A
Other languages
German (de)
French (fr)
Other versions
EP1518213B1 (en
Inventor
Johan Larsson
Daniel Johansson
Bo Hammerlid
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Volvo Truck Corp
Original Assignee
Volvo Lastvagnar AB
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Volvo Lastvagnar AB filed Critical Volvo Lastvagnar AB
Publication of EP1518213A1 publication Critical patent/EP1518213A1/en
Application granted granted Critical
Publication of EP1518213B1 publication Critical patent/EP1518213B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C5/00—Registering or indicating the working of vehicles
    • G07C5/08—Registering or indicating performance data other than driving, working, idle, or waiting time, with or without registering driving, working, idle or waiting time

Definitions

  • the present invention relates to a method for collecting data from a motor-driven vehicle, which is provided with a microprocessor with memory for storing a particular quantity of data, the data being provided by a number of sensors connected to the vehicle and its motor and being recorded and compiled into a specific data file upon each recording occasion.
  • An example of a known system for this purpose is a system that continually logs data until a memory unit is full, after which the oldest recording in the memory unit is successively overwritten, so that historical data is available going back over a certain period of time. The length of this period of time is determined by the storage capacity of the memory unit. It is economically advantageous if this capacity can be reduced.
  • An object of the invention is therefore to achieve a method for collecting data from a motor-driven vehicle, which method makes possible a cost-effective and efficient system solution.
  • the method according to the invention is characterized by the steps of ascertaining that conditions are fulfilled for recording a data file, of recording a data file as a non-erasable reference data file, and, on subsequent occasions when the conditions are fulfilled, of successively recording and storing a number of successively erasable data files within the predetermined quantity of data.
  • the quantity of data contains both non-erasable reference data and erasable logging data, which means that the system solution can be made very cost-effective.
  • Figure 1 is a diagram that shows a torque graph for a motor
  • Figure 2 is a diagram that illustrates a scenario of change in engine speed over time that is a condition for recording. MODES FOR CARRYING OUT THE INVENTION:
  • the method according to the invention is intended to be used for recording status information comprising a number of operational parameters for a driving motor mounted in a vehicle.
  • These operational parameters can vary, for example depending upon the type of motor that the method is used with, the area of use of the motor and depending upon what information is available.
  • new types of sensor can open up new possibilities regarding information about the status of a motor.
  • new legislation can result in new operational parameters needing to be added.
  • the following embodiment thus contains only one example of what such status information can constitute.
  • the status information recorded on one and the same occasion can, for example, comprise the following operational parameters: Cooling fan speed, Vehicle speed, Accelerator position, Engine load, Fuel supply pressure, Oil pressure, Turbocharger pressure, Turbo temperature, Ambient air pressure, Coolant temperature, Crankcase pressure, Incoming air temperature, Oil temperature, Fuel load, Engine speed, EGR, Total distance driven and Total running time for the motor.
  • This status information can be used to determine the condition of the motor and to study the historical trends during the life of the motor.
  • An electronic diagnostic tool can be used for reading off and processing status information before this is presented to the user.
  • the memory structure can be designed in the following way:
  • the first status recording is carried out when the motor is brand new and when all conditions for recording are fulfilled for the first time. This recording is never overwritten.
  • the second status recording is carried out after the motor has been running for a particular number of hours, corresponding to the motor's normal running-in period. This recording is never overwritten.
  • Use of the two remaining memory entries within the memory for special status recordings can be instigated via an electronic diagnostic tool in the event of a replacement of a vital component in the motor, for example in the event of a replacement of the turbo unit. These instigated recordings can be overwritten on a rolling basis. Instigated status recordings are carried out as soon as all the conditions for recording are fulfilled.
  • the normal register for status recording contains in this embodiment 15 memory entries, which are overwritten on a rolling basis with a suitable minimum interval of time.
  • Time- activated status recording or fault-finding recording with a diagnostic tool is carried out as soon as all the conditions for recording are fulfilled.
  • a plurality of preconditions needs to be fulfilled before instigated or time-activated status recording can be carried out.
  • the sensors that are included in the recording conditions must be working properly.
  • it is a condition that the motor is not in so-called motor protection mode.
  • the motor's coolant temperature must be within a particular range
  • the engine load must be high (close to maximum torque) or have a high torque requirement
  • the air pressure must be normal
  • motor protection mode must not be activated and the engine speed must be decreasing within a specific engine speed range.
  • the condition concerning the engine load means that the engine load must have been high for a particular period of time, for example for a few seconds. If the motor is not "healthy", it is possible that a system for reducing emissions will limit the torque when the torque requirement is high.
  • Figure 1 is a diagram that shows the engine speed on the X- axis and the torque on the Y-axis, and shows a conventional torque graph 10 for a combustion engine.
  • Figure 2 illustrates the relationship of change in engine speed over time which is a condition for recording when the engine speed decreases by a particular number of rpm C within an engine speed range A-B. This is in order to ensure that the engine is running at full load and in this way to obtain conformity in the collection of data.
  • D shows the fulfilling of the condition over time.
  • An electronic diagnostic tool that can be connected to the vehicle's data system can be used to instigate a recording of a data file when the conditions are fulfilled. This is used in particular when fault-finding on the vehicle.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Recording Measured Values (AREA)
  • Time Recorders, Dirve Recorders, Access Control (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)
  • Testing Of Engines (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
  • Automobile Manufacture Line, Endless Track Vehicle, Trailer (AREA)
  • Train Traffic Observation, Control, And Security (AREA)

Abstract

The invention relates to a method for collecting data from a motor-driven vehicle, which is provided with a microprocessor with memory for storing a particular quantity of data. The data is provided by a number of sensors connected to the vehicle and its motor and is recorded and compiled into a specific data file upon each recording occasion, when it its ascertained that conditions are fulfilled for recording a data file. This is recorded as a non-erasable reference data file. Upon subsequent occasions when the conditions are fulfilled, a number of successively erasable data files are successively recorded and stored within the predetermined quantity of data.

Description

TITLE :
A method for collecting data from a motor-driven vehicle
TECHNICAL FIELD:
The present invention relates to a method for collecting data from a motor-driven vehicle, which is provided with a microprocessor with memory for storing a particular quantity of data, the data being provided by a number of sensors connected to the vehicle and its motor and being recorded and compiled into a specific data file upon each recording occasion.
BACKGROUND ART:
With modern vehicles, faultfinding, for example in the event of a breakdown, can be difficult and time-consuming. At the same time, questions can arise concerning guarantees and whether the vehicle has been used correctly or whether the vehicle has been tampered with in any way by the user. In addition, it can be advantageous to be able to ascertain quickly whether the replacement of a vital component, such as a turbo-compressor, has resulted in the problem being put right .
These problems occur in particular with heavy vehicles such as lorries for long-distance transportation, which are subject to intensive use. In addition, these vehicles are optimized for being used within power ranges that are relatively close to the maximum power. Very high demands are also made regarding fuel economy for these vehicles.
There is thus a need for methods and systems for being able to record engine data continually. An example of a known system for this purpose is a system that continually logs data until a memory unit is full, after which the oldest recording in the memory unit is successively overwritten, so that historical data is available going back over a certain period of time. The length of this period of time is determined by the storage capacity of the memory unit. It is economically advantageous if this capacity can be reduced.
DISCLOSURE OF INVENTION:
An object of the invention is therefore to achieve a method for collecting data from a motor-driven vehicle, which method makes possible a cost-effective and efficient system solution.
For this object, the method according to the invention is characterized by the steps of ascertaining that conditions are fulfilled for recording a data file, of recording a data file as a non-erasable reference data file, and, on subsequent occasions when the conditions are fulfilled, of successively recording and storing a number of successively erasable data files within the predetermined quantity of data. As a result of designing the method in this way, the quantity of data contains both non-erasable reference data and erasable logging data, which means that the system solution can be made very cost-effective.
Advantageous embodiments of the invention are described in the following subsidiary claims .
BRIEF DESCRIPTION OF DRAWINGS:
The invention will be described in greater detail in the following, with reference to embodiments that are shown in the attached drawings, in which:
Figure 1 is a diagram that shows a torque graph for a motor, and
Figure 2 is a diagram that illustrates a scenario of change in engine speed over time that is a condition for recording. MODES FOR CARRYING OUT THE INVENTION:
The method according to the invention is intended to be used for recording status information comprising a number of operational parameters for a driving motor mounted in a vehicle. These operational parameters can vary, for example depending upon the type of motor that the method is used with, the area of use of the motor and depending upon what information is available. Thus, the development of new types of sensor can open up new possibilities regarding information about the status of a motor. In addition, new legislation can result in new operational parameters needing to be added. The following embodiment thus contains only one example of what such status information can constitute.
The status information recorded on one and the same occasion can, for example, comprise the following operational parameters: Cooling fan speed, Vehicle speed, Accelerator position, Engine load, Fuel supply pressure, Oil pressure, Turbocharger pressure, Turbo temperature, Ambient air pressure, Coolant temperature, Crankcase pressure, Incoming air temperature, Oil temperature, Fuel load, Engine speed, EGR, Total distance driven and Total running time for the motor.
This status information can be used to determine the condition of the motor and to study the historical trends during the life of the motor. An electronic diagnostic tool can be used for reading off and processing status information before this is presented to the user.
In this embodiment, there are four different events that cause a recording of status information to be carried out. After each of these events, a recording is carried out as soon as all the recording conditions are fulfilled. The status information is stored either in a rolling register or in a special memory, depending upon the event that caused the recording to be carried out. The memory structure can be designed in the following way:
The first status recording is carried out when the motor is brand new and when all conditions for recording are fulfilled for the first time. This recording is never overwritten.
The second status recording is carried out after the motor has been running for a particular number of hours, corresponding to the motor's normal running-in period. This recording is never overwritten.
Use of the two remaining memory entries within the memory for special status recordings can be instigated via an electronic diagnostic tool in the event of a replacement of a vital component in the motor, for example in the event of a replacement of the turbo unit. These instigated recordings can be overwritten on a rolling basis. Instigated status recordings are carried out as soon as all the conditions for recording are fulfilled.
The normal register for status recording contains in this embodiment 15 memory entries, which are overwritten on a rolling basis with a suitable minimum interval of time. Time- activated status recording or fault-finding recording with a diagnostic tool is carried out as soon as all the conditions for recording are fulfilled. In order that the different operational parameters in a status recording can contain relevant and repeatable data, a plurality of preconditions needs to be fulfilled before instigated or time-activated status recording can be carried out. For example, the sensors that are included in the recording conditions must be working properly. In addition, it is a condition that the motor is not in so-called motor protection mode.
Assuming that these preconditions are fulfilled and that the status recording is either instigated or time-activated, further conditions for the status recording need to be fulfilled. For example, the motor's coolant temperature must be within a particular range, the engine load must be high (close to maximum torque) or have a high torque requirement, the air pressure must be normal, motor protection mode must not be activated and the engine speed must be decreasing within a specific engine speed range.
The condition concerning the engine load means that the engine load must have been high for a particular period of time, for example for a few seconds. If the motor is not "healthy", it is possible that a system for reducing emissions will limit the torque when the torque requirement is high.
The condition concerning decreasing engine speed is only tested if the other conditions are fulfilled and occurs when the engine speed decreases within an engine speed range. If the engine speed increases within the range, the conditions will immediately become invalid, see Figure 2.
Figure 1 is a diagram that shows the engine speed on the X- axis and the torque on the Y-axis, and shows a conventional torque graph 10 for a combustion engine. Figure 2 illustrates the relationship of change in engine speed over time which is a condition for recording when the engine speed decreases by a particular number of rpm C within an engine speed range A-B. This is in order to ensure that the engine is running at full load and in this way to obtain conformity in the collection of data. D shows the fulfilling of the condition over time.
An electronic diagnostic tool that can be connected to the vehicle's data system can be used to instigate a recording of a data file when the conditions are fulfilled. This is used in particular when fault-finding on the vehicle.
The invention is not to be regarded as being limited to the embodiments described above, a number of further developments and modifications being possible within the framework of the following patent claims.

Claims

1. Method for collecting data from a motor-driven vehicle, which is provided with a microprocessor ( ) with memory for storing a particular quantity of data, the data being provided by a number of sensors connected to the vehicle and its motor and being recorded and compiled into a specific data file upon each recording occasion, characterized by the steps of ascertaining that conditions are fulfilled for recording a data file, of recording a data file as a non-erasable reference data file, and on subsequent occasions when the conditions are fulfilled, of successively recording and storing a number of successively erasable data files within the predetermined quantity of data.
2. Method according to Claim 1, characterized by the step of recording the reference data file when the vehicle is newly manufactured.
3. Method according to Claim 1 or 2 , characterized by the step of recording an additional non-erasable reference data file during running in or when the vehicle has just completed its running-in period.
4. Method according to any one of Claims 1 to 3, characterized by the step of recording a reference data file when the vehicle undergoes a replacement of a vital motor component.
5. Method according to Claim 4, characterized by the step of recording an erasable reference data file when the vehicle undergoes a later replacement of a motor component.
6. Method according to Claim 4 or 5, characterized by the step of successively recording and storing an additional successively erasable reference data file in the event of subsequent replacements of a vital motor component.
7. Method according to any one of Claims 1 to 6 , characterized by the step of also recording calculated and estimated data in the data file, in addition to such data as is generated by sensors.
8. Method according to any one of claims 1 to 7, characterized by the step, when conditions are fulfilled, of instigating a recording of a data file via a diagnostic tool for use when fault-finding on the vehicle.
EP03733715A 2002-06-24 2003-06-06 A method for collecting data from a motor-driven vehicle Expired - Lifetime EP1518213B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
SE0201952A SE522502C2 (en) 2002-06-24 2002-06-24 Method of recording data from a motor vehicle
SE0201952 2002-06-24
PCT/SE2003/000945 WO2004001679A1 (en) 2002-06-24 2003-06-06 A method for collecting data from a motor-driven vehicle

Publications (2)

Publication Number Publication Date
EP1518213A1 true EP1518213A1 (en) 2005-03-30
EP1518213B1 EP1518213B1 (en) 2009-03-18

Family

ID=20288310

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03733715A Expired - Lifetime EP1518213B1 (en) 2002-06-24 2003-06-06 A method for collecting data from a motor-driven vehicle

Country Status (10)

Country Link
EP (1) EP1518213B1 (en)
JP (1) JP4275067B2 (en)
CN (1) CN100511286C (en)
AT (1) ATE426220T1 (en)
AU (1) AU2003238997A1 (en)
BR (1) BRPI0312085B1 (en)
DE (1) DE60326727D1 (en)
ES (1) ES2323685T3 (en)
SE (1) SE522502C2 (en)
WO (1) WO2004001679A1 (en)

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4258421A (en) * 1978-02-27 1981-03-24 Rockwell International Corporation Vehicle monitoring and recording system
DE2906890A1 (en) * 1979-02-22 1980-09-04 Vdo Schindling ELECTRICAL CIRCUIT FOR SAVING THE LAST TRAVEL FROM A MOTOR VEHICLE
US4621335A (en) * 1983-05-31 1986-11-04 Allied Corporation Real time recall feature for an engine data processor system
US4616320A (en) * 1984-03-12 1986-10-07 Teledyne Industries Inc. Seismic strong-motion recorder
DE4140123C2 (en) * 1991-12-05 1994-02-24 Daimler Benz Ag Device for identifying vehicle and equipment features
US5638273A (en) * 1995-03-29 1997-06-10 Remote Control Systems, Inc. Vehicle data storage and analysis system and methods
US5737215A (en) * 1995-12-13 1998-04-07 Caterpillar Inc. Method and apparatus for comparing machines in fleet
DE19624041A1 (en) * 1996-06-17 1997-12-18 Bayerische Motoren Werke Ag Method for changing an electronic memory for usage-related data of a vehicle
US6434458B1 (en) * 1999-10-28 2002-08-13 General Electric Company Method and apparatus for vehicle data transfer optimization

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2004001679A1 *

Also Published As

Publication number Publication date
BRPI0312085B1 (en) 2016-06-28
SE0201952L (en) 2003-12-25
AU2003238997A1 (en) 2004-01-06
SE522502C2 (en) 2004-02-10
BR0312085A (en) 2005-03-22
CN100511286C (en) 2009-07-08
ATE426220T1 (en) 2009-04-15
SE0201952D0 (en) 2002-06-24
WO2004001679A1 (en) 2003-12-31
CN1662935A (en) 2005-08-31
ES2323685T3 (en) 2009-07-23
DE60326727D1 (en) 2009-04-30
JP2005530948A (en) 2005-10-13
JP4275067B2 (en) 2009-06-10
EP1518213B1 (en) 2009-03-18

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