GB2152166A - Automatic vehicle speed control - Google Patents

Automatic vehicle speed control Download PDF

Info

Publication number
GB2152166A
GB2152166A GB08332536A GB8332536A GB2152166A GB 2152166 A GB2152166 A GB 2152166A GB 08332536 A GB08332536 A GB 08332536A GB 8332536 A GB8332536 A GB 8332536A GB 2152166 A GB2152166 A GB 2152166A
Authority
GB
United Kingdom
Prior art keywords
speed
vehicle
signal
actual
error
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Withdrawn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
GB08332536A
Other versions
GB8332536D0 (en
Inventor
Kenneth Bruce Caldwell
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.)
AE PLC
Original Assignee
AE PLC
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 AE PLC filed Critical AE PLC
Priority to GB08332536A priority Critical patent/GB2152166A/en
Publication of GB8332536D0 publication Critical patent/GB8332536D0/en
Priority to EP84308086A priority patent/EP0145374A3/en
Priority to AU36364/84A priority patent/AU3636484A/en
Priority to JP59256625A priority patent/JPS60143136A/en
Publication of GB2152166A publication Critical patent/GB2152166A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
    • B60W10/06—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of combustion engines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT 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
    • B60K31/00—Vehicle fittings, acting on a single sub-unit only, for automatically controlling vehicle speed, i.e. preventing speed from exceeding an arbitrarily established velocity or maintaining speed at a particular velocity, as selected by the vehicle operator
    • B60K31/02—Vehicle fittings, acting on a single sub-unit only, for automatically controlling vehicle speed, i.e. preventing speed from exceeding an arbitrarily established velocity or maintaining speed at a particular velocity, as selected by the vehicle operator including electrically actuated servomechanism including an electric control system or a servomechanism in which the vehicle velocity affecting element is actuated electrically
    • B60K31/04—Vehicle fittings, acting on a single sub-unit only, for automatically controlling vehicle speed, i.e. preventing speed from exceeding an arbitrarily established velocity or maintaining speed at a particular velocity, as selected by the vehicle operator including electrically actuated servomechanism including an electric control system or a servomechanism in which the vehicle velocity affecting element is actuated electrically and means for comparing one electrical quantity, e.g. voltage, pulse, waveform, flux, or the like, with another quantity of a like kind, which comparison means is involved in the development of an electrical signal which is fed into the controlling means
    • B60K31/042—Vehicle fittings, acting on a single sub-unit only, for automatically controlling vehicle speed, i.e. preventing speed from exceeding an arbitrarily established velocity or maintaining speed at a particular velocity, as selected by the vehicle operator including electrically actuated servomechanism including an electric control system or a servomechanism in which the vehicle velocity affecting element is actuated electrically and means for comparing one electrical quantity, e.g. voltage, pulse, waveform, flux, or the like, with another quantity of a like kind, which comparison means is involved in the development of an electrical signal which is fed into the controlling means where at least one electrical quantity is set by the vehicle operator
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T7/00—Brake-action initiating means
    • B60T7/12—Brake-action initiating means for automatic initiation; for initiation not subject to will of driver or passenger
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/18—Conjoint control of vehicle sub-units of different type or different function including control of braking systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/18—Conjoint control of vehicle sub-units of different type or different function including control of braking systems
    • B60W10/196—Conjoint control of vehicle sub-units of different type or different function including control of braking systems acting within the driveline, e.g. retarders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units, or advanced driver assistance systems for ensuring comfort, stability and safety or drive control systems for propelling or retarding the vehicle
    • B60W30/18—Propelling the vehicle
    • B60W30/1819—Propulsion control with control means using analogue circuits, relays or mechanical links
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2510/00—Input parameters relating to a particular sub-units
    • B60W2510/06—Combustion engines, Gas turbines
    • B60W2510/0638—Engine speed

Abstract

An automatic speed control system particularly for use with coaches has a comparator 12 for comparing the actual road speed of the vehicle with a reference to produce an error signal for controlling the engine power via a control unit 18 so as to hold the vehicle at the desired speed. In addition the error signal is fed to a comparator 52 which, if the error signal indicates too high an excess speed, provides positive retardation of the vehicle via a retardation unit 30 which may be the actual brakes of the vehicle or (preferably) its electric retarder. A comparator 54 may also be arranged to be responsive to excess engine speed and to actuate the retarder via an OR gate 60. <IMAGE>

Description

1
GB2 152 166A 1
SPECIFICATION.
Improvements in and relating to automatic speed control systems
5
The invention relates to automatic speed control systems such as for controlling the road speed of motor vehicles. More specifically, the invention relates to automatic speed control 10 systems for heavier road vehicles such as trucks or coaches.
Embodiments of the invention to be more specifically described below include means for initiating positive action to reduce over-speed-1 5 ing of a vehicle.
According to the invention, there is provided an automatic speed control system for a vehicle, comprising means operative to produce an actual speed signal representing ac-20 tual speed, control means responsive to the actual speed signal so as to produce a control signal when the actual speed exceeds a predetermined limit speed, and output means responsive to the control signal to provide 25 positive retardation of the vehicle.
For example, the positive retardation may be provided by the vehicle brakes and in such a case the system includes means for operating the vehicle brakes in dependence on the 30 said control signal. Preferably, however, the positive retardation is provided by an electric retarder on the vehicle, and the system includes means responsive to the control signal to actuate the electrical retarder. 35 The actual speed may represent the actual road speed of the vehicle.
The actual speed may represent the actual engine speed of the vehicle (independent of its road speed).
40 The system may also include means responsive to the actual speed signal and a reference speed signal to produce an error signal whose sign and magnitude is representative of the difference if any between them, and means 45 responsive to the error signal to adjust the power of the engine of the vehicle to tend to reduce the error signal to zero.
According to the invention, there is also provided an automatic speed control system 50 for a vehicle, comprising first speed-dependent means operative to produce an actual road speed signal representing the actual road speed of the vehicle, second speed-dependent means operative to produce an actual engine 55 speed signal representing the actual engine speed of the vehicle independently of its road speed, first comparing means for comparing one of the said actual speed signals with a predetermined reference signal whereby to 60 produce an error signal indicating the sign and magnitude of any error between them,
first control means responsive to the error signal and operative to adjust the engine power of the engine of the vehicle in such a 65 sense and by such an amount as to tend to reduce that error signal to zero, second comparing means operative in dependence on both actual speed signals to determine when either of them exceeds a predetermined limit 70 speed to produce a braking signal, and means responsive to the braking signal to cause positive retardation of the vehicle.
Such retardation may be produced by actuating the brakes of the vehicle or by actuating 75 an electrical retarder of the vehicle.
The second comparing means may comprise means for comparing the said error signal with a second reference signal, means responsive to the other actual speed signal for 80 comparing that other speed signal with a further speed reference signal so as to produce a second error signal, and means for comparing the second error signal with a third reference signal representing the predeter-85 mined limit speed.
Further according to the invention is provided an automatic speed control system for a vehicle comprising means responsive to the actual speed of the vehicle and to the actual 90 engine speed of the engine of the vehicle for producing two error signals respectively dependent on the signs and magnitudes of the errors between the actual speeds and desired values thereof, means for comparing the error 95 signals to determine which represents the greater error, and speed control means responsive to the one representing the greater error to control the power of the vehicle's engine in such a manner as to tend to reduce 100 the error to zero.
Automatic speed control systems embodying the invention will now be described, by way of example only, with reference to the accompanying diagrammatic drawings in 105 which:
Figure 1 is a block circuit diagram of one of the systems; and
Figure 2 is a block circuit diagram of another one of the systems.
110 The systems illustrated are for use in coaches primarily but may also be used in other road vehicles, primarily heavy vehicles.
As shown in Figure 1, the system comprises a transducer 5 which produces an electrical 115 signal on a line 6 corresponding to the road speed of the vehicle. The transducer 5 may take any suitable form. For example, it may be an electromagnetic or photoelectric type of device arranged to receive electromagnetic or 1 20 photoelectric pulses in dependence on the road speed of the vehicle, such as by being electromagnetically or photoelectrically responsive to the rotational speed of the propel-lor shaft of the vehicle. The resultant pulsed 125 output is used to drive a monostable 7 which produces a train of pulses on a line 8 of similar length but whose pulse repetition frequency depends on the road speed. In such a case, this is preferably smoothed or otherwise 1 30 processed by a processing circuit 9 so as to
2
GB2 152 166A
2
produce a generally DC electrical signal Vs1 on a line 10 whose magnitude is proportional to the vehicle road speed. Vs1 is passed through an AC amplifier 10 which passes the 5 signal Vs1 and amplifies sudden changes in the DC value. The amplifier output is passed into an error amplifier 1 2 which compares its magnitude with a reference signal Vr1 on a line 14 representing the desired speed of the 10 vehicle. The reference on the line 14 may be derived from a manually settable control which is set by the driver, for example a potentiometer. Instead, a store could be provided which is instantaneously connected to 1 5 receive the signal on the line 10 when the vehicle is running at a road speed desired by the driver and then stores that magnitude of signal which thereafter provides the reference on the line 14. Another possibility is to pro-20 vide a fixed reference on the line 14, that is, a signal whose level is not under control of the driver but represents the maximum speed which it is desired to permit the vehicle to run.
25 In each case, however, the result is that the error amplifier 12 compares the magnitudes of the signals received on the lines 10 and 14 and produces an error signal, Ve1, on a line 16 whose magnitude represents the error (if 30 any) between the desired and actual road speeds and whose sign indicates whether the actual road speed is greater or less than the desired speed.
The error signal is passed to an engine 35 power control unit 18. This is arranged to respond to the sign and magnitude of Ve1 and to adjust the power of the engine 20 of the vehicle in such a sense as to bring the actual road speed of the vehicle to the desired 40 value, whereupon, of course, the signal Ve1 tends to zero.
The control unit 18 may be electromechanical in nature such as in the form of an electro-pneumatic arrangement, or may be an electric 45 motor, which adjusts the carburettor or diesel injection system of the vehicle so as to control the engine power in the desired manner and independently of the driver's foot control. Examples of forms which the engine power 50 control unit 18 may take are shown in U.K. Patents Nos. 1486822 and 1493623.
In addition, however, the error signal Ve1 is passed to a comparator 22 on a line 24. Comparator 22 compares the magnitude of 55 the error signal Ve1 with a fixed reference Vr2 on a line 26. Vr2 is selected so that if the magnitude of Ve1 exceeds this reference, this means that the actual road speed of the vehicle is exceeding the desired value by at 60 least a predetermined (relatively small)
amount, and in such a case the comparator 22 produces an output signal Ve2 on a line 28. Signal Ve2 is passed to a retarder unit 30 which acts positively on the vehicle in a 65 suitabSe manner so as actually to reduce its speed. Thus, the retarder unit 30 may be in the form of the actual brakes of the vehicle so that these are applied to bring the road speed of the vehicle down to the desired level. More advantageously, however, the retarder unit 30 takes the form of the electrical retarder which is commonly fitted to coaches and which acts usually on the propellor shaft of the vehicle so as to provide electrical braking of the vehicle.
In this way, an additional safeguard is provided. Without the provision of the comparator 22, it is still possible for the vehicle to be driven at an excess speed downhill. In such a case, the remainder of the system can merely reduce the engine power to a minimum, but if the hill is steep enough, this does not prevent the vehicle overspeeding. The comparator 22 acting in combination with the retarder 30 does prevent this.
In the system of Figure 2, items corresponding to items in Figure 1 are correspondingly referenced.
In Figure 2, a further transducer 40 is provided which produces an electrical signal on a line 42 dependent on the actual engine speed of the vehicle. The transducer 40 may take any suitable form and may be actuated, for example, by electrical impulses from the ignition system of the engine if it is of the spark ignition type. If it is a diesel engine,
then a separate transducer may be provided. In each case, the electrical signal 42, if of pulsed form, is passed to a monostable 43 corresponding to the monostable 7 and the resultant pulse train is fed to a processing circuit 44 corresponding to the circuit 9 to produce a DC signal Vs2 on a line 45 whose magnitude corresponds to the actual engine speed. Vs2 is passed to an amplifier 46 corresponding to amplifier 10 and thence to an error amplifier 48 which compares it with a reference signal Vr3 on a line 50 representing a desired limit speed for the engine. Vr3 would normally be a fixed reference which would be set by the vehicle manufacturer or vehicle owner (that is, it would not be in control of the driver).
The result is that the error amplifier 48 produces an error signal Ve3 on a line 49 whose sign and magnitude represent the sign and magnitude of any error between the actual engine speed and the limit speed. Signal Ve3 is, together with the signal Vel, passed to a comparator 50. Comparator 50 now acts to compare both the signals Ve1 and Ve3 with each other. Whichever is the greater will appear on the output of the comparator and will actuate the engine power control 18 so as to tend to reduce the error to zero.
In addition, the signal Vs1 is fed into a comparator 52 where it is compared with reference Vr1. Likewise, signal Vs3 is fed into another comparator 54 where it is compared with reference Vr3. The comparators 52 and 54 therefore produce error signals on lines 56
70
75
80
85
90
95
100
105
110
115
120
125
130
3
GB2 152 166A 3
and 58 which respectively correspond to Ve1 and Ve3 but which are not subject to the effect of the AC amplifiers 7 and 45 and which are only produced if the respective 5 speed error is positive (that is, the actual road or engine speed is greater than the desired level). These error signals are fed to an OR gate 60. The output of gate 60 is fed to the retarder control 30.
10 Therefore, the system of Figure 2 provides the additional safeguard of positively braking or retarding the vehicle in conditions when the engine speed is excessive even if the road speed is not. Thus, for example, it will posi-
15 tively brake or retard the vehicle if the driver should engage a lower gear at an excessive road speed. It will thus protect the vehicle against action by the driver in selecting a low gear at too higher speed on descending a hill
20 (in an attempt to build up engine speed for a subsequent ascent).
The systems described may be used with advantage with the speed control systems disclosed in our co-pending U.K. Patent Appli-
25 cations Nos 8025881, 8025883 and 8122177.

Claims (16)

1. An automatic speed control system for s
30 vehicle, comprising means operative to produce an actual speed signal representing actual speed, control means responsive to the actual speed signal so as to produce a control signal when the actual speed exceeds a pre-
35 determined limit speed, and output means responsive to the control signal to provide positive retardation of the vehicle.
2. A system according to claim 1, in which the output means includes means for operat-
40 ing the vehicle brakes in dependence on the said control signal.
3. A system according to claim 1 for use where the vehicle includes an electric retarder, in which the output means includes means
45 responsive to the control signal to actuate the electrical retarder.
4. A system according to any preceding claim, in which the actual speed represents the actual road speed of the vehicle.
50
5. A system according to any one of claims 1 to 3, in which the actual speed represents the actual engine speed of the vehicle (independent of its road speed).
6. A system according to any preceding
55 claim, including means responsive to the actual speed signal and a reference speed signal to produce an error signal whose sign and magnitude is representative of the difference if any between them, and means responsive to
60 the error signal to adjust the power of the engine of the vehicle to tend to reduce the error signal to zero.
7. An automatic speed control system for a vehicle, comprising first speed-dependant
65 means operative to produce an actual road speed signal representing the actual road speed of the vehicle, second speed-dependent means operative to produce an actual engine speed signal representing the actual engine speed of the vehicle independently of its road speed, first comparing means for comparing one of the said actual speed signals with a predetermined reference signal whereby to produce an error signal indicating the sign and magnitude of any error between them, first control means responsive to the error signal and operative to adjust the engine power of the engine of the vehicle in such a sense and by such an amount as to tend to reduce that error signal to zero, second comparing means operative in dependence on one or both actual speed signals to determine when one or both of them exceeds a predetermined limit speed to produce a braking signal, and retarding means responsive to the braking signal to cause positive retardation of the vehicle.
8. A system according to claim 7, in which the retarding means comprises means for actuating the brakes of the vehicle.
9. A system according to claim 7, in which the retarding means comprises means for actuating an electrical retarder of the vehicle.
10. A system according to any one of claims 7 to 9, in which the second comparing means comprises means for comparing the said one actual speed signal with a second reference signal representing the said predetermined limit speed to produce a first said braking signal, and means responsive to the other actual speed signal for comparing that other speed signal with a further speed reference signal representing the said predetermined limit speed so as to produce second said braking signal.
11. An automatic speed control system for a vehicle, comprising means responsive to the actual speed of the vehicle and to the actual engine speed of the engine of the vehicle for producing two error signals respectively dependent on the signs and magnitudes of the errors between the actual speeds and desired values thereof, means for comparing the error signals to determine which represents the greater error, and speed control means responsive to the one representing the greater error to control the power of the vehicle's engine in such a manner as to tend to reduce the error to zero.
12. A system according to claim 11, including retarder means responsive to at least one said actual speed signal provide positive retardation of the vehicle when the speed represented thereby exceeds a predetermined limit speed.
13. A system according to claim 12, in which the retarder means comprises means for actuating the makes of the vehicle.
14. A system according to claim 12, in which the retarder means comprises means
70
75
80
85
90
95
100
105
110
115
120
125
130
4
GB2 152 166A
4
for actuating an electrical retarder of the vehicle.
15. An automatic speed control system for a vehicle, substantially as described in relation
5 to Fig. 1 of the accompanying drawings.
16. An automatic speed control system for a vehicle, substantially as described in relation to Fig. 2 of the accompanying drawings.
Printed in the United Kingdom for
Her Majesty's Stationery Office, Dd 8818935. 1985. 4235. Published at The Patent Office, 25 Southampton Buildings.
London.. WC2A 1AY. from which copies may be obtained.
GB08332536A 1983-12-06 1983-12-06 Automatic vehicle speed control Withdrawn GB2152166A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GB08332536A GB2152166A (en) 1983-12-06 1983-12-06 Automatic vehicle speed control
EP84308086A EP0145374A3 (en) 1983-12-06 1984-11-21 Automatic speed control systems
AU36364/84A AU3636484A (en) 1983-12-06 1984-12-06 Automatic speed control systems
JP59256625A JPS60143136A (en) 1983-12-06 1984-12-06 Automatic speed controller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB08332536A GB2152166A (en) 1983-12-06 1983-12-06 Automatic vehicle speed control

Publications (2)

Publication Number Publication Date
GB8332536D0 GB8332536D0 (en) 1984-01-11
GB2152166A true GB2152166A (en) 1985-07-31

Family

ID=10552904

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08332536A Withdrawn GB2152166A (en) 1983-12-06 1983-12-06 Automatic vehicle speed control

Country Status (4)

Country Link
EP (1) EP0145374A3 (en)
JP (1) JPS60143136A (en)
AU (1) AU3636484A (en)
GB (1) GB2152166A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5941614A (en) * 1994-10-12 1999-08-24 Rover Group Limited Wheeled vehicle
DE10032263B4 (en) 1999-07-06 2019-05-29 Scania Cv Ab Diesel engine and method for its regulation

Families Citing this family (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
HUT43288A (en) * 1986-04-18 1987-10-28 Csepeli Autogyar Method and apparatus for operating the hydrodynamic decelerating brake of motor vehicles controlled by electro-hydraulic valve system
JP2611239B2 (en) * 1987-07-16 1997-05-21 トヨタ自動車株式会社 Vehicle speed control device
JPH01122735A (en) * 1987-11-06 1989-05-16 Nissan Motor Co Ltd Constant speed running device
SE460781B (en) * 1988-03-31 1989-11-20 Saab Scania Ab PROCEDURES AND ARRANGEMENTS FOR CONSTANT MAINTENANCE OF MOTOR VEHICLES DURING DOWN THE DOWN BACK
AU661966B2 (en) * 1991-04-08 1995-08-17 Caterpillar Inc. Automatic vehicle speed retarding control
WO1992017354A1 (en) * 1991-04-08 1992-10-15 Caterpillar Inc. Automatic vehicle speed retarding control
DE4313685A1 (en) * 1993-04-27 1993-09-30 Voith Turbo Kg Vehicle braking control with hydrodynamic retarder - involves constant speed braking with hand setting control and with adjustment using footbrake pedal to set different speeds
DE4338399B4 (en) * 1993-11-10 2013-02-21 Robert Bosch Gmbh Method and device for controlling a vehicle
DE4341212A1 (en) * 1993-12-03 1994-04-21 Voith Turbo Kg Limiting speed of IC engine powered vehicle fitted with retarder - using electronically coupled controllers regulating fuel input and automatic operation of retarder to maintain constant limited speed
DE4341213C2 (en) * 1993-12-03 1995-07-27 Voith Turbo Kg Control for influencing the speed of a vehicle
US5701248A (en) 1994-11-25 1997-12-23 Itt Automotive Europe Gmbh Process for controlling the driving stability with the king pin inclination difference as the controlled variable
US5710704A (en) 1994-11-25 1998-01-20 Itt Automotive Europe Gmbh System for driving stability control during travel through a curve
US5710705A (en) 1994-11-25 1998-01-20 Itt Automotive Europe Gmbh Method for determining an additional yawing moment based on side slip angle velocity
US5694321A (en) 1994-11-25 1997-12-02 Itt Automotive Europe Gmbh System for integrated driving stability control
DE19515057B4 (en) 1994-11-25 2006-08-03 Continental Teves Ag & Co. Ohg Brake system for a motor vehicle
US5711024A (en) 1994-11-25 1998-01-20 Itt Automotive Europe Gmbh System for controlling yaw moment based on an estimated coefficient of friction
US5774821A (en) 1994-11-25 1998-06-30 Itt Automotive Europe Gmbh System for driving stability control
US5732379A (en) 1994-11-25 1998-03-24 Itt Automotive Europe Gmbh Brake system for a motor vehicle with yaw moment control
US5732378A (en) 1994-11-25 1998-03-24 Itt Automotive Europe Gmbh Method for determining a wheel brake pressure
US5732377A (en) 1994-11-25 1998-03-24 Itt Automotive Europe Gmbh Process for controlling driving stability with a yaw rate sensor equipped with two lateral acceleration meters
US5742507A (en) 1994-11-25 1998-04-21 Itt Automotive Europe Gmbh Driving stability control circuit with speed-dependent change of the vehicle model
GB2313212A (en) * 1994-12-27 1997-11-19 Komatsu Mfg Co Ltd Device and method for limiting the vehicle speed of a working vehicle
DE19503622A1 (en) * 1995-02-03 1996-08-08 Bosch Gmbh Robert Braking system
JPH07324753A (en) * 1995-03-09 1995-12-12 Matsushita Electric Ind Co Ltd Gas stove
DE19961720C2 (en) * 1999-12-22 2001-11-29 Daimler Chrysler Ag Method and device for regulating the speed of a motor vehicle
SE0203498L (en) * 2002-11-26 2004-05-18 Volvo Lastvagnar Ab Method and device for distributing braking torque of a motor vehicle
DE102007035720A1 (en) 2007-07-30 2009-02-05 Robert Bosch Gmbh Method and device for controlling the speed of a vehicle
CN104085304B (en) * 2014-06-30 2017-07-28 潍柴动力股份有限公司 Speed method for limiting and Speed limiting system based on retarder

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB933370A (en) * 1960-11-03 1963-08-08 Gen Motors Corp Control systems for change-speed power transmission mechanisms
GB1210710A (en) * 1968-05-03 1970-10-28 Robert Eugene Cleary Flow measuring device
GB1252155A (en) * 1967-12-29 1971-11-03
GB1462209A (en) * 1973-10-17 1977-01-19 Krampe & Co Safety braking system for railways
GB1556704A (en) * 1975-09-11 1979-11-28 Sundstrand Corp Overspeed protection control for a prime mover
GB2022737A (en) * 1978-05-02 1979-12-19 Wabco Fahrzeugbremsen Gmbh Device for regulating the speed of a vehicle
GB2056125A (en) * 1979-08-03 1981-03-11 Ass Eng Ltd Vehicle speed control system
EP0025025A2 (en) * 1979-09-04 1981-03-11 Hans Jonasson Controlling device cooperating with an engine braking means in a Diesel motor
EP0036753A2 (en) * 1980-03-19 1981-09-30 Ogden Electronics Ltd. Overspeed engine control
GB2082700A (en) * 1980-08-06 1982-03-10 Wheway Watson Holdings Method of arresting a vehicle; vehicle having arrestor means

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3882973A (en) * 1972-07-19 1975-05-13 Caterpillar Tractor Co Automatic retarder control system
GB1493623A (en) * 1974-03-05 1977-11-30 Ass Eng Ltd Speed control systems
DE2444518A1 (en) * 1974-09-18 1976-04-01 Peugeot Speed regulator for car - with accelerator pedal returning force increased if set speed exceeded
GB1486822A (en) * 1975-01-13 1977-09-28 Ass Eng Ltd Actuator devices
GB1602487A (en) * 1978-05-31 1981-11-11 Ass Eng Ltd Vehicle speed control systems
GB2081933B (en) * 1980-08-08 1984-11-14 Ass Eng Ltd Automatic speed control systems
GB2081934B (en) * 1980-08-08 1984-03-07 Ass Eng Ltd Automatic speed control systems

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB933370A (en) * 1960-11-03 1963-08-08 Gen Motors Corp Control systems for change-speed power transmission mechanisms
GB1252155A (en) * 1967-12-29 1971-11-03
GB1210710A (en) * 1968-05-03 1970-10-28 Robert Eugene Cleary Flow measuring device
GB1462209A (en) * 1973-10-17 1977-01-19 Krampe & Co Safety braking system for railways
GB1556704A (en) * 1975-09-11 1979-11-28 Sundstrand Corp Overspeed protection control for a prime mover
GB2022737A (en) * 1978-05-02 1979-12-19 Wabco Fahrzeugbremsen Gmbh Device for regulating the speed of a vehicle
GB2056125A (en) * 1979-08-03 1981-03-11 Ass Eng Ltd Vehicle speed control system
EP0025025A2 (en) * 1979-09-04 1981-03-11 Hans Jonasson Controlling device cooperating with an engine braking means in a Diesel motor
EP0036753A2 (en) * 1980-03-19 1981-09-30 Ogden Electronics Ltd. Overspeed engine control
GB2082700A (en) * 1980-08-06 1982-03-10 Wheway Watson Holdings Method of arresting a vehicle; vehicle having arrestor means

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5941614A (en) * 1994-10-12 1999-08-24 Rover Group Limited Wheeled vehicle
DE10032263B4 (en) 1999-07-06 2019-05-29 Scania Cv Ab Diesel engine and method for its regulation

Also Published As

Publication number Publication date
AU3636484A (en) 1985-06-13
EP0145374A3 (en) 1986-01-02
JPS60143136A (en) 1985-07-29
EP0145374A2 (en) 1985-06-19
GB8332536D0 (en) 1984-01-11

Similar Documents

Publication Publication Date Title
GB2152166A (en) Automatic vehicle speed control
US4763262A (en) Propulsion control using longitudinal acceleration, steering angle, and speed to select slip threshold
US4763263A (en) Propulsion control using longitudinal acceleration to determine slip thresholds
JP2929490B2 (en) Drive slip control device
HU218526B (en) Method and device for control of vehicles
US4354467A (en) Vehicle speed control systems
GB2204368A (en) Wheel-slip control
SE515380C2 (en) Method and apparatus for determining the mass of a vehicle
US4867288A (en) Process for actuating a motor vehicle retarding brake controlled by an electrohydraulic valve system
US6185495B1 (en) System for producing a braking signal in a motor vehicle
EP0346497A4 (en) Vehicle engine control unit
KR910011558A (en) Tractor Trailer Anti-Trailer Swing System and Method
KR100374430B1 (en) Traction slip controller
JP2502633B2 (en) Vehicle drive force control device
AU563772B2 (en) Control of clutch torque of electromagnetic clutch for vehicles
US6349255B1 (en) Method and device for producing a signal representing a motor vehicle running conditions
US5269390A (en) Traction control system
GB2265042A (en) A process for adjusting the driving speed of a motor vehicle
AU769921B2 (en) Method and device for adjusting the braking and/or drive effects on wheels of motor vehicles
JP2000515633A (en) Method and apparatus for determining a value representing vehicle speed
US4872525A (en) Drive system for a motor vehicle comprising means for permanently driving a first pair of wheels and automatically operable means for selectively driving a second pair of wheels
EP1481861B1 (en) A method and a computer readable storage device for estimating tirc-to-road friction
KR930012486A (en) Vehicle slip control device
JP2509260B2 (en) Vehicle drive force control device
SE444154B (en) DEVICE FOR ADJUSTING THE PERIPHERAL SPEED ON WHEELS ON A RAILWAY

Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)