GB2142449A - A motor vehicle having a speed controller - Google Patents
A motor vehicle having a speed controller Download PDFInfo
- Publication number
- GB2142449A GB2142449A GB08416558A GB8416558A GB2142449A GB 2142449 A GB2142449 A GB 2142449A GB 08416558 A GB08416558 A GB 08416558A GB 8416558 A GB8416558 A GB 8416558A GB 2142449 A GB2142449 A GB 2142449A
- Authority
- GB
- United Kingdom
- Prior art keywords
- internal combustion
- combustion engine
- valve
- pressure medium
- engine brake
- 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
Links
Classifications
-
- 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
- B60K31/06—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 fluid pressure actuated servomechanism in which the vehicle velocity affecting element is actuated by fluid pressure
- B60K31/10—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 fluid pressure actuated servomechanism in which the vehicle velocity affecting element is actuated by fluid pressure 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 a pressure which is fed into the controlling means
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
- Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
- Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
Abstract
A controller for limiting the speed of a vehicle and of its internal combustion engine comprises an electronic control device 1 which can be influenced by an engine speed sensor 2, a vehicle speed sensor 3, a gear cluster position controller 4 and a kick-down switch 6, which can be operated by an accelerator pedal 5, and from which output signals are transmitted to a fluid-actuated regulating device 16 which moves a floating lever 19 of a fuel injection pump 20 and by which the pump 20 can be influenced in the same manner as by the accelerator pedal 5. The regulating device 16 is actuated by valves 7,8 under the control of the device 1 and moves the lever 19 towards a zero fuel delivery position when a set speed is exceeded. The vehicle is also equipped with an internal combustion engine brake 12 13,14 which, when actuated, causes the floating lever 19 of the fuel injection pump 20 to be moved into its stop position (zero delivery) by the regulating device. <IMAGE>
Description
SPECIFICATION
A motor vehicle having a controller for limiting the speed of an internal combustion engine and the speed of the motor vehicle
This invention relates to a motor vehicle with an internal combustion engine having a controller for limiting the speed of the internal combustion engine and the vehicle speed, comprising an electronic control device responsive to an engine speed sensor, a vehicle speed sensor, a gear cluster position controller and a kick-down switch operable by an accelerator pedal, and from which control device output signals are, in use, transmitted to a regulating device adapted to move a floating lever of a fuel injection pump and by which the pump can be controlled in the same manner as by the accelerator pedal, and having an internal combustion engine brake which comprises an internal combustion engine brake cylinder and an internal combustion engine brake valve and which, when actuated, causes the floating lever of the fuel injection pump to be moved in a stop position in which fuel delivery is zero.
The reference 'Mercedes-Benz service, Service training centre, Limitation of engine and vehicle speeds in commercial vehicle 5/8" discloses such a controller in which the regulating device is an electric servomotor. The only function of this servomotor is to adjust the floating lever of the fuel injection pump.
Moveover, German Auslegeschift 2322025 disclosed a regulating device in a motor vehicle equipped with an engine brake, which device is arranged between the accelerator pedal and the floating lever of an injection pump and, during sliding or pushing operation, is moved automatically in the full-load direction by an engine speed-dependent floating lever. This regulating device comprises an actuating cylinder which can be driven by a pressure medium and which can be influenced depending on the engine brake. Limitation of the engine speed and the speed of the motor vehicle is not provided in this case.
According to the present invention there is provided a motor vehicle with an internal combustion engine having a controller for limiting the speed of the internal combustion engine and the vehicle speed, comprising an electronic control device responsive to an engine speed sensor, a vehicle speed sensor, a gear cluster position controller and a kick-down switch, operable by an accelerator pedal, and from which control device output signals are, in use, transmitted to a regulating device adapted to move a floating lever of a fuel injection pump and by which the pump can be controlled in the same manner as by the accelerator pedal, and having an internal combustion engine brake which comprises an internal combustion engine brake cylinder and an internal combustion engine brake valve and which, when actuated, causes the floating lever of the fuel injection pump to be moved into a stop position in which fuel delivery is zero, wherein the floating lever is moved into its stop position by a regulating device comprising an actuating cylinder adapted to be driven by a pressure medium and which is loaded by a compression spring and a pressure medium circuit of the regulating device, which, in use, is supplied with a pressure medium from a reservoir, contains a 2/2 way directional control valve and a 3/2-way directional control valve, which valves are operable by output signals of the control device, a shuttle valve, the internal combustion engine brake cylinders and the internal combustion engine brake valve, all of which are arranged in such a manner that,
when a predetermined vehicle speed or a predetermined engine speed is reached, the 3/2-way valve is opened and the pressure medium is admitted into the regulating device via the said valve, the open 2/2-way valve and the shuttle valve so that the floating lever is moved in the idling direction whilst the pressure medium circuit is closed from the internal combustion engine brake cylinders by the internal combustion engine brake valve and the shuttle valve, that,
when the vehicle speed or the engine speed falls below the predetermined value, the directional control valves are closed and the pressure medium flows out of the regulating device via the 3/2-way valve so that the floating lever is moved in the full-load direction by the compression spring,
and that, when the internal combustion engine brake valve is actuated, the pressure medium drives the internal combustion engine brake cylinders and, via the shuttle valve which closes off the pressure medium circuit from the 3/2-way valve, drives the regulating device so that the floating lever is moved into its stop position.
Because of the use of the shuttle valve and directional control valves in accordance with the invention, only one controller is required for engine speed and vehicle speed control and for the internal combustion engine brake, as a result of which the cost of constructing the controller is still kept relatively low. Both the directional control valves and the shuttle valve can be used equally in all vehicles.
An embodiment of the invention will now be described by way of example, with reference to the drawings.
An electronic control device 1 can be influenced by an engine speed sensor 2, a vehicle speed sensor 3, a gear cluster position controller 4 and a kick-down switch 6 which can be operated by an accelerator pedal 5. Output signals from the control device 1 are transmitted to a 2/2-way directional control valve 7 and to a 3/2-way directional control valve 8, both of which valves are arranged in a pressure medium circuit 10 which is supplied with the pressure medium from a reservoir 9 which comprises, for example, a compressed air reservoir. The directional control valves 7 and 8 are electromagnetically operated valves which are each provided with a return spring. In this case the 3/2-way valve 8 is shown in the closed deaerated position and the 2/2-way valve 7 is shown in the open position permitting the flow of the pressure medium.Further output signals from the control device 1 are trans mitted to an aural or visual alarm device 11. The pressure medium circuit 10 also contains an internal combustion engine brake valve 12, internal combustion engine brake cylinders 13 and 14, a shuttle valve 15 and a regulating device which is formed by an actuating cylinder 16 driven by the pressure medium and which includes a compression spring 17. The actuating cylinder 16 can be operated by the acceleratop pedal 5 via a pedal linkage 18 to move a floating lever 19 of a fuel injection pump 20.
The speed of the motor vehicle is influenced, in the manner known from German Auslegeschrift 23 22 025, by operating the accelerator pedal 5 via the pedal linkage 18, the actuating cylinder 16 and the floating lever 19 of the fuel injection pump 20. If the motor vehicle reaches a speed which has been programmed in the control device 1, for example 112 kith, this information is transmitted from the vehicle speed sensor 3 to the control device 1 and the 3,2-way valve 8 is opened by a corresponding output signal.The pressure medium is admitted to the actuating cylinder 16 when the 2/2-way valve 7 is also open and to the shutter valve 15, which closes off the pressure medium circuit 10 from the internal combustion engine brake cylinders 13 and 14, and the floating lever 19 of the fuel injection pump 20 is moved in the idling direction in opposition to the spring force of the compression spring 17.The resulting fall in the vehicle speed below the programmed value causes the 2-2-way valve 7 and 3.2-way valve 8 to close, in dependence upon the speed signals which are constantly fed to the control device 1, so that air is removed from the actuating cylinder 16 via the 32-way valve and the floating lever 19 of the fuel injection pump 20 is again moved in the full-load direction by the spring force of the compression spring 17. As a result of this mutual triggering of the directional control valves 7 and 8 depending on the vehicle speed signals transmitted to the control device 1, the floating lever 19 of the fuel injection pump 20 is maintained in a specific position which is adapted to the vehicle speed.
In addition, the control device 1 is programmed in such a mannerthat, at an engine speed of, for example, n = less than 700 min -', as occurs for example when the engine is switched off, the vehicle speed limitation is switched off.
The internal combustion engine speed limitation, which has also been programmed in the control device 1, is switched on by the gear cluster position controller 4 which is only associated with upper gears of the transmission, for example, gears 5 to 8 in the case of an eight-speed gearbox. When one of these gear sets is engaged, this information is transmitted to the control device 1 in which a - -1 predetermined speed, for example n = 1900 min is programmed. The control device 1 constantly receives engine speed signals from the speed sensor 2 arranged on the camshaft of the engine.After the engine speed programmed in the control device 1, i.e., 1900 min -1, has been reached, the floating lever 19 of the fuel injection pump 20 is moved in a similar manner to that in vehicle speed limitation via the directional control valves 7 and 8, the shuttle valve 15 and the actuating cylinder 16, the only difference being that the directional control valves 7 and 8 are triggered not by vehicle speed-dependent output signals from the control device 1, but by engine speed-dependent output signals from the control device 1.
When the kick-down switch 6 is operated by the accelerator pedal 5, the control device 1 receives a signal from the kick-down switch 6 and the engine speed limitation is switched off. After the kick-down switch 6 has been operated, the engine speed limitation is switched on again when the speed is, for example, N ' 1500 min -1 These functions are also programmed in the control device 1.
If the internal combustion engine brake valve 12 is actuated by the driver, the accelerator pedal 5 and consequently the floating lever 19 of the fuel injection pump 20 are situated in the idling position and, because of the information then transmitted to the control device 1 by the engine speed sensor 2 and vehicle speed sensor 3, the directional control valves 7 and 8 are in the illustrated original or starting position. The pressure medium is fed to the engine brake cylinders 13 and 14 via the open engine brake valve 12 and to the actuating cylinder 16via the shuttle valve 15 which closes off the pressure medium circuit from the 3i2-way valve 8.As a result of this, the engine brake is operated and the floating lever 19 of the fuel injection pump 20 is pivoted counter to the spring force of the spring 17 into the stop position (zero delivery) in which the fuel supply to the internal combustion engine ceases. When the engine brake valve 12 is closed again, the pressure medium flow to the engine brake cylinders 13 and 14 and to the actuating cylinder 16 is again interrupted and engine speed and vehicle speed limitation takes place in the already described manner.
In the event of a failure of a fault in the engine speed and vehicle speed limiting system, a visual or aural alarm is provided in the driver's cab of the motor vehicle by the indicator 11 as a result of appropriate output signals from the control device 1.
After the control device 1 is switched off appropriately in any desired manner, the vehicle is ready for further operation.
Claims (2)
1. A motor vehicle with an internal combustion engine having a controller for limiting the speed of the internal combustion engine and the vehicle speed, comprising an electronic control device responsive to an engine speed sensor, a vehicle speed sensor, a gear cluster position controller and a kick-down switch operation by an accelerator pedal, and from which control device output signals are, in use, transmitted to a regulating device adapted to move a floating lever of a fuel injection pump and by which the pump can be controlled in the same manner as by the accelerator pedal, and having an internal combustion engine brake which comprises an internal combustion engine brake cylinder and an internal combustion engine brake valve and which, when actuated, causes the floating lever of the fuel injection pump to be moved into a stop position in which fuel delivery is zero, wherein the floating lever is moved into its stop position by a regulating device comprising an actuating cylinder adapted to be driven by a pressure medium and which is loaded a compression spring and a pressure medium circuit of the regulating device, which, in use, is supplied with a pressure medium from a reservoir, contains a 2/2-way directional control valve and 3/2-way directional control valve, which valves are operable by output signals of the control device a shuttle valve, the internal combustion engine brake cylinders and the internal combustion engine brake valve, all of which are arranged in such a manner that,
when a predetermined vehicle speed or a predetermined engine speed is reached, the 3/2-way valve is opened and the pressure medium is admitted into the regulating device via the said valve, the open 2/2-way valve and the shuttle valve so that the floating lever is moved in the idling direction whilst the pressure medium circuit is closed from the internal combustion engine brake cylinders by the internal combustion engine brake valve and the shutter valve, that
when the vehicle speed ortheengine speed falls below the predetermined value, the directional control valves are closed and the pressure medium flows out of the regulating device via the 3/2-way valve so that the floating lever is moved in the full-load direction by the compression spring, and that,
when the internal combustion engine brake valve is actuated, the pressure medium drives the internal combustion engine brake cylinders and, via the shuttle valve which closes off the pressure medium circuit from the 3/2-way valve, drive the regulating device so that the floating lever is moved into its stop position.
2. A motor vehicle with an internal combustion engine having a controller for limiting the speed of the engine and the vehicle speed, substantially as described herein with reference to, and as illustrated in the accompanying drawings.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3323563A DE3323563C1 (en) | 1983-06-30 | 1983-06-30 | Motor vehicle with a control device for internal combustion engine speed and speed limitation |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB8416558D0 GB8416558D0 (en) | 1984-08-01 |
| GB2142449A true GB2142449A (en) | 1985-01-16 |
| GB2142449B GB2142449B (en) | 1986-07-30 |
Family
ID=6202774
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB08416558A Expired GB2142449B (en) | 1983-06-30 | 1984-06-29 | A motor vehicle having a speed controller |
Country Status (4)
| Country | Link |
|---|---|
| DE (1) | DE3323563C1 (en) |
| FR (1) | FR2548276B1 (en) |
| GB (1) | GB2142449B (en) |
| IT (1) | IT1177835B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2197027A (en) * | 1986-10-25 | 1988-05-11 | Teves Gmbh Alfred | I.c. engine throttle valve control |
| US4860848A (en) * | 1987-06-10 | 1989-08-29 | Robert Bosch Gmbh | Apparatus for actuating the throttle valve of an internal combustion engine |
| GB2222634A (en) * | 1988-09-13 | 1990-03-14 | Kevin Casey | I.c engine throttle control device |
| FR2656840A1 (en) * | 1990-01-08 | 1991-07-12 | Bosch Gmbh Robert | METHOD AND DEVICE FOR LIMITING THE ROTATION SPEED OF AN INTERNAL COMBUSTION ENGINE, OR THE SPEED OF MOVING A MOTOR VEHICLE. |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3612905C2 (en) * | 1986-04-17 | 1993-11-18 | Bosch Gmbh Robert | Procedure for triggering a switching function |
| DE19907851A1 (en) * | 1999-02-24 | 2000-08-31 | Bayerische Motoren Werke Ag | Method for cylinder deactivation and activation in a motor vehicle internal combustion engine |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2322025C2 (en) * | 1973-05-02 | 1975-06-05 | Daimler-Benz Ag, 7000 Stuttgart | Adjustment device on a motor vehicle equipped with an engine brake |
| DE2757242A1 (en) * | 1977-12-22 | 1979-07-05 | Daimler Benz Ag | STARTING AND STOPPING DEVICE, ACTUATED BY A MAIN SWITCH USING A KEY, FOR VEHICLES WITH AN AIR COMPRESSING FUEL INJECTED ENGINE |
| NL7808685A (en) * | 1978-08-23 | 1980-02-26 | Groeneveld Transport Effic | DEVICE FOR LIMITING THE MAXIMUM SPEED OF A COMBUSTION ENGINE OF A MOTOR VEHICLE |
| US4351293A (en) * | 1979-06-04 | 1982-09-28 | Hewitt John T | Diesel vehicle speed control system |
-
1983
- 1983-06-30 DE DE3323563A patent/DE3323563C1/en not_active Expired
-
1984
- 1984-06-25 IT IT48453/84A patent/IT1177835B/en active
- 1984-06-28 FR FR8410247A patent/FR2548276B1/en not_active Expired
- 1984-06-29 GB GB08416558A patent/GB2142449B/en not_active Expired
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2197027A (en) * | 1986-10-25 | 1988-05-11 | Teves Gmbh Alfred | I.c. engine throttle valve control |
| GB2197027B (en) * | 1986-10-25 | 1991-01-23 | Teves Gmbh Alfred | Traction slip and speed controlling mechanism |
| US4860848A (en) * | 1987-06-10 | 1989-08-29 | Robert Bosch Gmbh | Apparatus for actuating the throttle valve of an internal combustion engine |
| GB2222634A (en) * | 1988-09-13 | 1990-03-14 | Kevin Casey | I.c engine throttle control device |
| FR2656840A1 (en) * | 1990-01-08 | 1991-07-12 | Bosch Gmbh Robert | METHOD AND DEVICE FOR LIMITING THE ROTATION SPEED OF AN INTERNAL COMBUSTION ENGINE, OR THE SPEED OF MOVING A MOTOR VEHICLE. |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2142449B (en) | 1986-07-30 |
| GB8416558D0 (en) | 1984-08-01 |
| IT1177835B (en) | 1987-08-26 |
| FR2548276A1 (en) | 1985-01-04 |
| DE3323563C1 (en) | 1985-01-17 |
| FR2548276B1 (en) | 1987-01-30 |
| IT8448453A0 (en) | 1984-06-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 746 | Register noted 'licences of right' (sect. 46/1977) | ||
| PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 19960629 |