DE19605342A1 - Gear selection information linked to vehicle speed - Google Patents

Gear selection information linked to vehicle speed

Info

Publication number
DE19605342A1
DE19605342A1 DE19605342A DE19605342A DE19605342A1 DE 19605342 A1 DE19605342 A1 DE 19605342A1 DE 19605342 A DE19605342 A DE 19605342A DE 19605342 A DE19605342 A DE 19605342A DE 19605342 A1 DE19605342 A1 DE 19605342A1
Authority
DE
Germany
Prior art keywords
consumption
power
performance
speed range
drive machine
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.)
Withdrawn
Application number
DE19605342A
Other languages
German (de)
Inventor
Raimund Dipl Ing Piatek
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.)
Volkswagen AG
Original Assignee
Volkswagen AG
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
Priority to DE19506638 priority Critical
Application filed by Volkswagen AG filed Critical Volkswagen AG
Priority to DE19605342A priority patent/DE19605342A1/en
Publication of DE19605342A1 publication Critical patent/DE19605342A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R16/00Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
    • B60R16/02Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
    • B60R16/023Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems
    • B60R16/0231Circuits relating to the driving or the functioning of the vehicle
    • B60R16/0236Circuits relating to the driving or the functioning of the vehicle for economical driving
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H63/00Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
    • F16H63/40Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism comprising signals other than signals for actuating the final output mechanisms
    • F16H63/42Ratio indicator devices
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60KARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K2370/00Details of arrangements or adaptations of instruments specially adapted for vehicles, not covered by groups B60K35/00, B60K37/00
    • B60K2370/16Type of information
    • B60K2370/174Economic driving
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H61/00Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H2061/0012Transmission control for optimising power output of driveline
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H61/00Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H2061/0015Transmission control for optimising fuel consumptions
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/80Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
    • Y02T10/84Data processing systems or methods, management, administration

Abstract

A process for displaying the current gear selection of a motor vehicle, in relation to optimal fuel consumption and performance at the chosen speed in the prevailing road conditions and loading, uses a simple dial and finger indicator system. For example, the indicator showing the gear in use (Z1) may be at a different point on the dial to the segment (S) within which lies the gear for optimal fuel consumption. Many drivers select gears only according to speed; this may result in less than the best possible engine performance of fuel consumption, especially during acceleration or when negotiating hills. This display system would give the driver the information to decide on a change of gear if desirable.

Description

The invention relates to a method for displaying information for switching a a drive unit of a motor vehicle interacting manual transmission.

Experience shows that many drivers of motor vehicles do not always match the current one Driving situation and performance requirements of the drive unit cheapest gear insert. For example, during times of a constant speed Gear selected, which is a fuel-efficient operating point of the drive machine ne due to increased speed. The same performance could be with a higher gear and can be achieved in a more economical operating point. Another case is during accelerations of the motor vehicle or an ascent of the road in front. Here, too high a gear is often engaged and the prime mover is nearby the full load characteristic curve operated. A gear change to an operating state with a height Ren torque would improve the accelerability of the motor vehicle and the prime mover would operate in a more economical area.

German patent DE 32 26 829 C2 describes a method for determining Displaying an information signal for switching a motor vehicle transmission known, at based on measured parameters such as vehicle speed, engine speed, Injection time, cooling water temperature and the selected gear are unconsumption current operating range is determined by a control unit. If the operating point of the An engine is in this operating range, there is an upshift signal. The shift line will be like this chosen that after shifting up in any gear and at any speed sufficient acceleration is maintained.

However, the known method leaves only one in view of fuel consumption unfavorable operating range of the engine or the drive machine Shift into a higher gear, the case of an acceleration process or one  Uphill is not taken into account. The display takes place via a light mark the windscreen of the motor vehicle if a gear that is too low is selected.

The object of the invention is a method and an apparatus for displaying a To provide information for switching a motor vehicle transmission, with the help of The driver of the motor vehicle receives information as to the extent to which he has chosen Operating point of the drive machine from a consumption and / or performance optimized Operating area is distant. The object is achieved by the features of the claims solved. Advantageous training and further education are presented in the subclaims.

The method according to the invention provides that depending on at least a first one measured characteristic of the drive machine from a control unit a momentary lei Power requirement of the engine is determined. In a second step is for the current performance requirement taking into account the second characteristic a consumption and / or performance-optimized operating range is determined and as a switch formation displayed to the driver of the motor vehicle.

According to an advantageous embodiment of the invention it is provided that as the first characteristic size for the determination of the current power requirement the sum of all Fahrwi is used. The injection time is preferably used as a measure of this sum or amount of fuel in at least one combustion chamber of the engine telt.

The speed of the prime mover is used as the second parameter and from that Control unit of the consumption and / or performance-optimized speed range via a control stored characteristic field determined.

In the device according to the invention it is provided that the consumption and / or Performance-optimized speed range depending on the current performance requirements in a display showing the current speed of the drive machine highlight instrument visually. This can be as a segment or highlighted in color with the help of luminous markings, for example light-emitting diodes arranged in a line, can be realized in the display instrument. Another possibility is that the value characterizing consumption and / or performance-optimized speed range is in the display instrument via a pointer, a highlighter or a digital Value is reproduced. It can also be provided that the consumption and / or to display the optimal gear speed range realizing gear of the gearbox.  

The invention is described in more detail below on the basis of exemplary embodiments. The associated drawings show:

Fig. 1, a fuel injection time-speed diagram of a driving machine,

Fig. 2 shows a display device with a information for switching in a height-ren passage,

Fig. 3 shows a fuel injection time-speed diagram of a driving machine,

Fig. 4 is a display device with information for switching to a lower gear and

Fig. 5 shows a further variant of the display device.

In the example shown in FIG. 1, the fuel injection time-speed diagram of a particular engine the power curve L are full, the performance curves KI to K5, and the characteristics of the gears 2 to 5 shown. The lines b1 to b7 shown in broken lines enclose areas of a specific specific fuel consumption, wherein b1 denotes a low fuel consumption area and b7 a high fuel consumption area. The motor vehicle runs at a constant speed in the plane. The power requirement on the drive machine is therefore constant (for example power curve K3). By engaging the 4th gear, the operating point A2 of the drive machine is determined on the power curve K3. For this power curve K3, the control unit in this case determines a consumption-optimized operating range (operating point A1) and the driver of the motor vehicle receives information via the display device shown in FIG. 2 that there is a more economical operating point A1 for the current power requirement than that of operating point A1 selected via the gear selected. He is intuitively asked to choose a higher gear. A conventional speed display is used as the display instrument, in which the current speed of the drive machine is currently represented by a pointer Z1. The consumption- optimal speed range n out determined by the control unit is represented in the exemplary embodiment by a segment S highlighted in color. However, it should be noted that, for reasons of comfort, a lower limit value n min is set for the speed of the drive machine for each motor vehicle. Advantageously, this lower limit value should also not be undercut by the recommended speed range n burn .

In the exemplary embodiment according to FIG. 3, the 5th gear of the manual transmission was engaged. The current operating point A1 of the drive machine is close to the full-load characteristic L full . When overtaking or going uphill, the increased power requirement can no longer be met with the gear currently engaged. On the basis of the fuel injection speed-speed characteristic field, the control unit calculates an operating point A2 for the prime mover that is more optimal in terms of power and possibly consumption and is displayed to the driver via the speed range n power assigned to him in the characteristic field. In FIG. 4, the display image is shown for this driving situation. It can be seen that with the currently selected gear and the current speed n currently the drive machine cannot provide the power required for the driving situation. Shifting into a lower gear is required. In determining the power-optimal speed range n paid is the maximum permissible for the prime mover limit speed n max must be observed.

Another possibility of displaying switching information is shown in FIG. 5. Of the determined fuel consumption and / or performance optimal speed range an in this field of characteristic speed value is formed n relative and next to the pointer Z1 for the current speed n current by a pointer Z2 or reproduced a light brand, not shown.

The advantage of the display device according to the invention is that the driver does not only receives information as to whether it is consuming and / or consuming with the gear engaged has set the optimum operating point of the drive machine, it also receives one Information to what extent his set operating point is and can be more easily decide whether a switching operation makes sense.

Reference list

L full load characteristic
K1 to K5 power curves
2 to 5 gear manual transmission
b1 to b7 range of a certain fuel consumption
A1, A2 operating point
Z1, Z2 hands
S segment
n currently current speed
n consumption-optimized speed range
n Performance-optimized speed range
n min lower speed limit
n max upper speed limit
tsp fuel injection time
n Drive engine speed.

Claims (9)

1. A method of displaying information for switching a gearbox cooperating with a drive machine of a motor vehicle, characterized in that the instantaneous power requirement (K1 to k5) to the drive machine is determined in a control unit as a function of at least a first characteristic of the load of the drive machine and for the current power requirement, taking into account at least a second parameter characterizing the operating point in an engine map , a consumption- and! or power-optimized speed range (n comb , n power ) is determined and displayed to the driver as shift information (S).
2. The method according to claim 1, characterized in that as the first parameter Sum of all current driving resistances is used.
3. The method according to claim 2, characterized in that the sum of all driving resistances over the fuel injection time (t einsp ) is determined.
4. The method according to any one of claims 1 to 3, characterized in that as the second Parameter the speed (n) of the drive machine is used.
5. A device for displaying a consumption and / or performance- optimized speed range for the current power requirement of the drive machine, characterized in that the consumption and / or performance- optimized speed range (n, n n power ) in a the current speed (n current ) of the Drive machine is optically highlighted as the display.
6. The device according to claim 5, characterized in that the consumption and / or performance- optimized speed range (n spend , n power ) as its position changing segment (S) is shown in the display.
7. The device according to claim 5, characterized in that the consumption and / or performance- optimized speed range (n burn , n power ) characterizing speed value (n reference ) is formed, which is shown in the display instrument.
8. The device according to claim 7, characterized in that the consumption and performance- optimized speed range (n spend , n power ) reflecting speed value (n reference ) is shown via a pointer (Z2) in the display instrument.
9. The device according to claim 5 or 7, characterized in that the consumption and performance- optimized speed range (n expend , n power ) or this speed range richly reproducing speed value (n reference ) is shown with the aid of at least one luminous marker.
DE19605342A 1995-02-25 1996-02-14 Gear selection information linked to vehicle speed Withdrawn DE19605342A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE19506638 1995-02-25
DE19605342A DE19605342A1 (en) 1995-02-25 1996-02-14 Gear selection information linked to vehicle speed

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19605342A DE19605342A1 (en) 1995-02-25 1996-02-14 Gear selection information linked to vehicle speed

Publications (1)

Publication Number Publication Date
DE19605342A1 true DE19605342A1 (en) 1996-08-29

Family

ID=7755041

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19605342A Withdrawn DE19605342A1 (en) 1995-02-25 1996-02-14 Gear selection information linked to vehicle speed

Country Status (1)

Country Link
DE (1) DE19605342A1 (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998038059A1 (en) * 1997-02-24 1998-09-03 Marius Tegethoff Motor vehicle display system
EP1253354A2 (en) 2001-04-27 2002-10-30 Robert Bosch Gmbh Method for generating a shift signal and shift indicator
WO2009077159A1 (en) * 2007-12-14 2009-06-25 Johnson Controls Technology Company Vehicle interfaces
DE102008028561A1 (en) 2008-03-10 2009-09-17 Volkswagen Ag Driver information device for car, has display device for displaying set of information simultaneously in display mode, where one information indicates change of fuel consumption due to possible gear change
GB2469206A (en) * 2009-04-02 2010-10-06 Lysanda Ltd Vehicle monitoring device
DE102011103722A1 (en) * 2011-06-09 2012-12-13 GM Global Technology Operations LLC (n. d. Gesetzen des Staates Delaware) Method for displaying gear change recommendation of vehicle, involves determining speed of vehicle and expected torque provided by motor, where expected acceleration of vehicle is calculated
EP2932136A4 (en) * 2012-12-17 2017-05-10 Scania CV AB Method and system for guidance of driver behaviour during driving of motor vehicles
AU2015311052B2 (en) * 2014-09-01 2019-05-30 Jaguar Land Rover Limited Control system and method
US10336191B2 (en) 2016-12-16 2019-07-02 Ford Global Technologies, Llc Vehicle tachometer display

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998038059A1 (en) * 1997-02-24 1998-09-03 Marius Tegethoff Motor vehicle display system
EP1253354A2 (en) 2001-04-27 2002-10-30 Robert Bosch Gmbh Method for generating a shift signal and shift indicator
WO2009077159A1 (en) * 2007-12-14 2009-06-25 Johnson Controls Technology Company Vehicle interfaces
DE102008028561A1 (en) 2008-03-10 2009-09-17 Volkswagen Ag Driver information device for car, has display device for displaying set of information simultaneously in display mode, where one information indicates change of fuel consumption due to possible gear change
GB2469206A (en) * 2009-04-02 2010-10-06 Lysanda Ltd Vehicle monitoring device
GB2469206B (en) * 2009-04-02 2011-09-21 Lysanda Ltd Improvements in and relating to vehicle management devices
DE102011103722A1 (en) * 2011-06-09 2012-12-13 GM Global Technology Operations LLC (n. d. Gesetzen des Staates Delaware) Method for displaying gear change recommendation of vehicle, involves determining speed of vehicle and expected torque provided by motor, where expected acceleration of vehicle is calculated
EP2932136A4 (en) * 2012-12-17 2017-05-10 Scania CV AB Method and system for guidance of driver behaviour during driving of motor vehicles
AU2015311052B2 (en) * 2014-09-01 2019-05-30 Jaguar Land Rover Limited Control system and method
US10336191B2 (en) 2016-12-16 2019-07-02 Ford Global Technologies, Llc Vehicle tachometer display

Similar Documents

Publication Publication Date Title
US20170008468A1 (en) Driver Assistance System for Driver Assistance for Consumption Controlled Driving
US8849507B2 (en) Driver assistance system for driver assistance for consumption controlled driving
US9242653B2 (en) Driver assistance system for assisting the driver for the purpose of consumption-controlled driving
JP3990716B1 (en) Vehicle display device
US8970360B2 (en) Apparatus for promoting improvement of driving skill to improve fuel efficiency
JP4648681B2 (en) Vehicle display device
EP2414183B1 (en) Improvements in and relating to vehicle management devices
CN101542093B (en) Fuel economy improvement assist device and method of fuel economy improvement assist
DE102009046010B4 (en) Hierarchical information display system for a vehicle
EP0873482B1 (en) Control for a device in a motor vehicle
JP4952221B2 (en) Gear position determination device for manual transmission and gear shift instruction device for automobile
DE4112577C2 (en) Control device for automatic transmissions
EP0898518B1 (en) Shift by wire transmission system
EP0519528B1 (en) Transmission control module
DE3101056C2 (en)
US6244986B1 (en) Shift control apparatus for continuously variable transmission
US7424361B2 (en) Driving force controller for a vehicle
JP3533685B2 (en) Vehicle image data calculation device and control method therefor
US4742733A (en) Control system for automatic change speed transmission
EP2028058B1 (en) Motor vehicle with a display of information which describes the driving behaviour in respect of the fuel consumption
US20110205044A1 (en) Apparatus for coaching a driver for driving operation to improve fuel efficiency
US8812174B2 (en) Control system for vehicle, vehicle having the control system, and controlling method thereof
US5053963A (en) AMT cruise control mode shift logic
EP0023836B1 (en) Change-speed transmission systems; engine-transmission assemblies incorporating such transmission systems
DE102010038258A1 (en) Vehicle information display device and method

Legal Events

Date Code Title Description
8139 Disposal/non-payment of the annual fee