GB2497387A - Cooling system for an industrial truck, in particular, a fork lift truck - Google Patents
Cooling system for an industrial truck, in particular, a fork lift truck Download PDFInfo
- Publication number
- GB2497387A GB2497387A GB1218881.9A GB201218881A GB2497387A GB 2497387 A GB2497387 A GB 2497387A GB 201218881 A GB201218881 A GB 201218881A GB 2497387 A GB2497387 A GB 2497387A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cooling circuit
- engine
- electronics
- text
- coolant
- 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- Withdrawn
Links
- 238000001816 cooling Methods 0.000 title claims abstract description 135
- 239000002826 coolant Substances 0.000 claims abstract description 68
- 238000002485 combustion reaction Methods 0.000 claims abstract description 27
- 239000003570 air Substances 0.000 description 16
- 239000012080 ambient air Substances 0.000 description 7
- 239000002918 waste heat Substances 0.000 description 6
- 239000000110 cooling liquid Substances 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 238000011161 development Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 238000013022 venting Methods 0.000 description 2
- 238000010792 warming Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000002528 anti-freeze Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
- B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
- B66F9/075—Constructional features or details
- B66F9/07595—Cooling arrangements for device or operator
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P3/00—Liquid cooling
- F01P3/20—Cooling circuits not specific to a single part of engine or machine
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P7/00—Controlling of coolant flow
- F01P7/14—Controlling of coolant flow the coolant being liquid
- F01P7/16—Controlling of coolant flow the coolant being liquid by thermostatic control
- F01P7/165—Controlling of coolant flow the coolant being liquid by thermostatic control characterised by systems with two or more loops
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Forklifts And Lifting Vehicles (AREA)
Abstract
A cooling system is for an industrial truck, particularly a fork lift truck (2, figure 1), having an internal combustion engine 10 and a power electronics unit 16. The cooling system comprises: an engine cooling circuit 33; an electronics cooling circuit 41; and a compensating reservoir 37 for a coolant. A suction feed connection 38 of the compensating reservoir is connected with an engine suction feed line 39 of the engine cooling circuit and with an electronics cooling circuit feed line 43 of the electronics cooling circuit. The reservoir is further connected with the engine and electronics cooling circuits by one or more engine cooling circuit vent lines 40 and one or more electronics cooling circuit vent lines 44, respectively. A throttling device is arranged in at least one of the engine or electronics suction feed lines or the engine or electronics vent lines to limit the volume of flow of coolant. Ideally, the throttling device comprises an orifice plate 45 having a reduced line cross-section. The combustion engine may drive a generator (12, figure 1) feeding a direct current voltage circuit to drive an electronic propulsion motor (13, figure 1) of a fork lift truck.
Description
Cooling system for an industrial truck The invention relates to a cooling system for an industrial truck. In particular, the invention relates to a cooling system for an industrial truck with an internal combustion engine and with at least one power electronics unit, in which an engine cooling circuit cools the internal combustion engine and an electronics cooling circuit cools the power electronics unit, and with a compensating reservoir for a coolant, with an engine suction feed line connecting the suction side of an engine coolant circulating pump with a suction connection on the compensating reservoir and at least one engine cooling circuit vent line connecting the engine cooling circuit with the compensating reservoir.
Industrial trucks such as fork-lift trucks are known having an internal combustion engine-powered electrical drive. In this, an internal combustion engine, in particular a diesel or fuel gas engine, drives a generator which produces electrical current. The electrical current is fed into an intermediate current circuit, generally a direct current voltage intermediate circuit, and passed to one or more electrical propulsion motors and other drives of the industrial truck, for example an electric motor which drives a pump to supply operating hydraulics for the industrial truck.
The internal combustion engine produces waste power in the form of waste heat and must be cooled accordingly. With modern engines this is done using liquid cooling with a mixture of water and antifreeze as coolant, with the coolant circulated in a circuit by a pump and waste heat given off to the ambient air in a radiator.
According to the prior art, the electric motors, such as the propulsion motors or the driving motor of the pumps for the operating hydraulics, and also the generator are driven using power electronics units, in particular voltage converters which convert the direct current from the direct current voltage intermediate circuit into polyphase rotary current or in the case of a generator the other way round. In these power electronics units, use is made of power semiconductors which can switch very high currents and in which as a result high power losses also occur. It is also known for use to be made of a liquid cooling system with a coolant to cool them.
For optimum and efficient operation the power semiconductors require a temperature level of approx. 70°C. In contrast, coolant temperatures of around 100°C are typically the optimum for internal combustion engines, in particular having regard to exhaust emissions and fuel consumption when operating at partial load.
Therefore, the power electronics unit and the internal combustion engine are each provided with their own cooling circuits. These cooling circuits are embodied as pressurised coolant circuits and in each case exhibit a compensating reservoir which compensates for fluctuations in volume due to thermal expansion and tolerances in the fill capacity. As a rule, compensating reservoirs allow the system to be filled and topped up through a pressure-tight opening. In addition, the compensating reservoir serves to rid each cooling system of disturbing air bubbles which could prevent circulation of the cooling liquid. For this, a suction line debouching into the bottom of the compensating reservoir is connected to the suction side of a circulating pump of the cooling circuit. At the same time, all the high points in the cooling circuit at which air bubbles could collect and be trapped, as a rule for instance the top of an air heat exchanger or radiator, are connected with the compensating reservoir through vent lines. The vent lines debouch into the compensating reservoir at a higher position than the suction feed line, frequently above a liquid level. When coolant is sucked out of the compensating reservoir by the suction pump, an equal amount of a mixture of coolant and any air bubbles is forced into the compensating reservoir through the vent line or vent lines. As the quantity of coolant being circulated through the compensating reservoir is only relatively small, the liquid settles there and air bubbles are separated.
A disadvantage of the prior art here is that industrial trucks, such as fork lift trucks, exhibit relatively large volumes and require large compensating reservoirs due to the layout in the vehicle, the lengths of coolant line needed and the performance required of the cooling system. With two cooling systems this results in an undesirably large amount of space being taken up. In addition, with two compensating reservoirs, above all when these have to be located in different places, there is a danger of one cooling circuit being overlooked during the daily maintenance and care of the vehicle.
It is conceivable to combine the compensating reservoirs of the two cooling circuits in one compensating reservoir by connecting vent lines of the second cooling circuit, for example the electronics cooling circuit, with the compensating reservoir.
As the coolant of the electronics cooling circuit does not pass through the compensating reservoir, this avoids the undesired mixing of hot coolant from the engine cooling circuit and cooler coolant from the electronics cooling circuit.
However, then air bubbles are not removed completely from the electronics cooling circuit and the initial filling or renewal of the coolant in the electronics circuit becomes more complicated as special venting measures can be required.
Therefore, the object of the present invention is to provide a cooling system with which both the power electronics unit and an internal combustion engine of an industrial truck with an internal combustion engine-powered electrical drive system can be cooled as easily and inexpensively as possible and with which the space requirement and the disadvantages of two compensating reservoirs can be avoided.
This object is achieved through a cooling system for an industrial truck with the features of the independent patent claim 1. Advantageous variants are disclosed in the subordinate claims.
The object is achieved through a cooling system for an industrial truck with an internal combustion engine and with at least one power electronics unit, in which an engine cooling circuit cools the internal combustion engine and an electronics cooling circuit cools the power electronics unit, and with a compensating reservoir for a coolant, with an engine suction feed line connecting the suction side of an engine coolant circulating pump with a suction feed connection of the compensating reservoir and at least one engine cooling circuit vent line connecting the engine cooling circuit with the compensating reservoir. Here, an electronics cooling circuit suction feed line connects the suction side of an electronics coolant circulating pump to the suction feed connection of the compensating reservoir and at least one electronics cooling circuit vent line connects the electronics cooling circuit with the compensating reservoir, and a throttling device is arranged in at least one of the engine suction feed line, engine cooling circuit vent line, electronics cooling circuit suction feed line and electronics cooling circuit vent line to limit the volume flow of coolant.
Advantageously, this results in a space-saving and simplified cooling system since only one compensating reservoir is necessary. In spite of this, it is still guaranteed that the cooling circuit which only carries a throttled flow of coolant through the compensating reservoir, is kept free of air bubbles. This guarantees the full performance capability of this cooling circuit. At the same time, excessive mixing of the two coolant circuits and thus undesired heating of the cooler cooling circuit is prevented. In addition, having only one compensating reservoir simplifies daily service operations on the industrial truck and avoids the danger of one of the cooling circuits being overlooked during checks and minor daily service operations.
In one advantageous embodiment, the throttling device is arranged in the electronics cooling circuit suction feed line.
Advantageously, the throttling device can be arranged in the electronics cooling circuit vent line.
The electronics cooling circuit is usually of simpler construction, even when a plurality of power electronics units are being cooled. The engine cooling circuit typically exhibits a more complex design, due to a bypass line for a small cooling circuit for the warm-up phase or an auxiliary heat exchanger for a vehicle heater.
Therefore, as a rule the electronics cooling circuit can be vented and kept free of air bubbles more easily. It is therefore particularly advantageous that coolant from the electronics cooling circuit is only passed through the compensating reservoir with a throttled flow rate. This is already sufficient to guarantee freedom from air bubbles in the electronics cooling circuit.
The throttling device can be formed by a reduced line cross-section.
This is a solution which is particularly simple and inexpensive to implement.
In one advantageous development of the invention, the throttling device is formed by an orifice plate.
With an orifice plate the throttling effect of the throttling device can be set specifically. This allows adaptation of the cooling system to ambient conditions, such as for example specific climatic zones or different types of industrial trucks. An orifice plate also makes it possible to obtain a sufficiently large throttling effect on the volume flow in order to be able to prevent undesired warming of the cooler coolant circuit in any circumstances.
A plurality of electronics cooling circuit vent lines can be present.
A plurality of engine cooling circuit vent lines can be present.
This makes it possible to guarantee efficient venting of the corresponding cooling circuits by providing a vent line at all the points at which air bubbles could potentially be trapped.
In one favourable development of the invention, the internal combustion engine drives a generator which feeds an intermediate current circuit, in particular a direct current voltage intermediate circuit, to drive propulsion motors.
With such an internal combustion engine-powered electrical drive, the invention is particularly advantageous since the power electronics units, such as for example a voltage converter for the generator or voltage converter for propulsion motors, exhibit high power outputs and require high performance cooling.
Advantageously, the industrial truck is a fork lift truck.
In the case of fork lift trucks it is particularly advantageous if only a small space is required by just one compensating reservoir. At the same time, with a fork lift truck, the radiator generally has to be arranged at the rear and is not cooled by ram air. This means long lines for the coolant and a large volume of coolant on the one hand which makes it necessary to have a correspondingly large compensating reservoir, and line routing on the other hand which makes it necessary to have electronics unit cooling circuit vent lines and engine cooling circuit vent lines in order to keep the cooling circuits free of bubbles. In the specific case ot a fork lift truck with an electronics cooling circuit and an engine cooling circuit, the solution according to the invention makes it possible to keep both free of bubbles.
Further advantages and details of the invention are explained in greater detail with reference to the embodiment example illustrated in the figures in which: fig. 1 shows an industrial truck in the form of a fork lift truck with a cooling system according to the invention, fig. 2 shows a cooling system according to the state of the art, and fig. 3 shows the cooling system according to the invention of the industrial truck in fig. 1.
Fig. 1 shows an industrial truck 1 which has an internal combustion engine-powered electrical drive system and is embodied as a counterbalanced fork lift truck 2. The counterbalanced fork lift truck 2 exhibits a lift mast 3 on which load forks 4 are arranged adjustable in height as load-carrying means. An operator workstation 6 with an operator seat 7 is arranged in an operator cab 5. A counterweight 9 is arranged above and behind a rear axle 8 which can be steered. An internal combustion engine 10, in the form of a diesel engine 11 in the embodiment example, is combined in a block with a generator 12 and produces electrical current which is fed via an intermediate current circuit in the form of a direct current voltage intermediate circuit not shown and a power electronics unit 16 in the form of a voltage converter 15 to at least one electric propulsion motor 13 for the front axle 14. The counterbalanced fork lift truck 2 is driven by means of an electric propulsion motor 13. The waste heat from the diesel engine 11 is absorbed by a cooling liquid in an engine cooling circuit and given off to the ambient air through an engine radiator 17 through which air flows as indicated by the arrow. The waste heat from the power electronics unit 16 is carried away through a further electronics cooling circuit and also given off to the ambient air through an electronics radiator 18.
Fig. 2 shows a cooling system according to the state of the art for an industrial truck with an internal combustion engine-powered electrical drive. The internal combustion engine 10 is cooled by cooling liquid in an engine cooling circuit 19. An engine coolant circulating pump 20 pumps the coolant through the engine cooling circuit 19. A thermostatic valve 21 directs the coolant either through a bypass line 22 in a small cooling circuit back to the engine coolant circulating pump 20, or to the engine radiator 17 in which the coolant gives off the waste heat of the internal combustion engine 10 to the ambient air. After the internal combustion engine 10 has been started from cold, the thermostatic valve 21 directs the coolant in the small cooling circuit directly back to the engine coolant circulating pump 20 until the normal operating temperature is reached. In a position right at the bottom, a compensating reservoir 23 exhibits a suction feed connection 24 from which an engine suction feed line 25 leads to the suction side of the engine coolant circulating pump 20. Engine cooling circuit vent lines 26 run from the high points in the engine cooling circuit 19 in the thermostatic valve 21 and the engine radiator 17 to the compensating reservoir.
When the engine coolant circulating pump 20 pumps the coolant around in the engine cooling circuit 19, coolant is sucked out of the compensating reservoir 23 through the suction feed connection 24 and the engine suction feed line 25. A corresponding quantity of coolant is forced through the engine cooling circuit vent lines 26 into the compensating reservoir 23 and in the process carries with it into the compensating reservoir 23 any air bubbles from the high points in the engine cooling circuit 19 at which these collect. In the compensating reservoir 23 the coolant settles and air bubbles are separated.
In addition to the engine cooling circuit 19, a cooling system according to the state of the art exhibits a further electronics cooling circuit 27. In the electronics cooling circuit 27 an electronics coolant circulating pump 28 pumps coolant through a heat exchanger of the power electronics unit 16 in order to cool this, and then through the electronics radiator 18 in order to give off the heat to the ambient air. A further compensating reservoir 29 with a suction feed connection 30 located at a low point is connected at the suction feed connection 30 through an electronics cooling circuit suction feed line 31 to the suction side of the electronics coolant circulating pump 28. An electronics cooling circuit vent line 32 is connected to the electronics radiator 18 as the highest point in the electronics cooling circuit 27.
A disadvantage of the prior art here is that two compensating reservoirs 23, 29 are required which take up a corresponding amount of space. When these compensating reservoirs 23, 29 are arranged in different locations for reasons of space, this also increases the danger of mistakes.
Fig. 3 shows the cooling system according to the invention of the industrial truck shown in fig. 1. The internal combustion engine 10 is cooled by cooling liquid in an engine cooling circuit 33. An engine coolant circulating pump 34 pumps the coolant through the engine cooling circuit 33. A thermostatic valve 35 directs the coolant either through a bypass line 36 in a small cooling circuit back to the engine coolant circulating pump 34, or to the engine radiator 17 in which the coolant gives off the waste heat of the internal combustion engine 10 to the ambient air. After the internal combustion engine 10 is started from cold, the thermostatic valve 35 directs the coolant in the small cooling circuit directly back to the engine coolant circulating pump 34 until the normal operating temperature is reached. In a position right at the bottom a compensating reservoir 37 exhibits a suction feed connection 38 from which an engine suction feed line 39 runs to the suction side of the engine coolant circulating pump 34. Engine cooling circuit vent lines 40 run from the high points in the engine cooling circuit 33 in the thermostatic valve 35 and the engine radiator 17 to the compensating reservoir. In an electronics cooling circuit 41 an electronics coolant circulating pump 42 pumps coolant through a heat exchanger of the power electronics unit 16 in order to cool this, and then through the electronics radiator 18 in order to give off the heat to the ambient air. The suction feed connection 38 of the compensating reservoir 37 is additionally connected with an electronics cooling circuit suction feed line 43 which is connected by its other end with the suction side of the electronics coolant circulating pump 42. An electronics cooling circuit vent line 44 is connected with the electronics radiator 18 as the highest point in the electronics cooling circuit 41 through an orifice plate 45 and debouches into the upper area of the compensating reservoir 37.
When the engine coolant circulating pump 34 pumps the coolant around in the engine cooling circuit 33, coolant is sucked out of the compensating reservoir 37 through the suction feed connection 38 and the engine suction feed line 39. A corresponding amount of coolant is forced through the engine cooling circuit vent lines 40 into the compensating reservoir 37 and in the process carries with it into the compensating reservoir 37 any air bubbles from the high points in the engine cooling circuit 33 at which these collect. In the compensating reservoir 37 the coolant settles and air bubbles are separated. Likewise, coolant is extracted by the electronics coolant circulating pump 42 through the electronics cooling circuit suction feed line 43 and at the highest point in the electronics radiator 18 a corresponding quantity of coolant is forced through the electronics cooling circuit vent line 44 into the compensating reservoir 37. Here, the amount of coolant is restricted by the orifice plate 45 which serves as a throttling device 46 and limits the volume flow in the electronics cooling circuit vent line 40. This prevents an excessive quantity of hotter coolant from the engine cooling circuit 33 passing into the cooler electronics cooling circuit 41 and warming this up unnecessarily.
Claims (1)
- <claim-text>Claims 1. A cooling system for an industrial truck (1), with an internal combustion engine (10) and with an least one power electronics unit (16), in which an engine cooling circuit (33) cools the internal combustion engine (10) and an electronics cooling circuit (41) cools the power electronics unit (16), and with a compensating reservoir (37) for a coolant, with an engine suction feed line (39) connecting the suction side of an engine coolant circulating pump (34) with a suction feed connection (38) of the compensating reservoir (37) and at least one engine cooling circuit vent line (40) connecting the engine cooling circuit (33) with the compensating reservoir (37), characterised in that an electronics cooling circuit suction feed line (43) connects the suction side of an electronics coolant circulating pump (42) with the suction feed connection (38) of the compensating reservoir (37), and at least one electronics cooling circuit vent line (44) connects the electronics cooling circuit (41) with the compensating reservoir (37) and a throttling device (46) is arranged in at least one of the engine suction feed line (39), engine cooling circuit vent line (40), electronics cooling circuit suction feed line (43) and electronics cooling circuit vent line (44) to limit the volume flow of coolant.</claim-text> <claim-text>2. A cooling system according to claim 1, characterised in that the throttling device (46) is located in the electronics cooling circuit suction feed line.</claim-text> <claim-text>3. A cooling system according to claim 1, characterised in that the throttling device (46) is located in the electronics cooling circuit vent line (44).</claim-text> <claim-text>4. A cooling system according to one of claims 1 to 3, characterised in that the throttling device (46) is formed by a reduced line cross-section.</claim-text> <claim-text>5. A cooling system according to one of claims 1 to 4, characterised in that the throttling device (46) is formed by an orifice plate (45).</claim-text> <claim-text>6. A cooling system according to one of claims 1 to 5, characterised in that a plurality of electronics cooling circuit vent lines (44) are present.</claim-text> <claim-text>7. A cooling system according to one of claims 1 to 6, characterised in that a plurality of engine cooling circuit vent lines (40) are present.</claim-text> <claim-text>8. A cooling system according to one of claims 1 to 7, characterised in that the internal combustion engine drives a generator (12) which feeds an intermediate current circuit, in particular a direct current voltage intermediate circuit, to drive propulsion motors (13).</claim-text> <claim-text>9. A cooling system according to one of claims 1 to 8, characterised in that the industrial truck is a fork lift truck (2).</claim-text>
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102011056032 | 2011-12-05 | ||
| DE102011056282A DE102011056282A1 (en) | 2011-12-05 | 2011-12-12 | Cooling system for e.g. counterbalance forklift, has throttling device arranged in engine cooling circuit vent line or electronics cooling circuit suction line or electronics cooling circuit vent line for limiting coolant volumetric flow |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB201218881D0 GB201218881D0 (en) | 2012-12-05 |
| GB2497387A true GB2497387A (en) | 2013-06-12 |
Family
ID=47359208
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1218881.9A Withdrawn GB2497387A (en) | 2011-12-05 | 2012-10-21 | Cooling system for an industrial truck, in particular, a fork lift truck |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2497387A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE2250670A1 (en) * | 2022-06-03 | 2023-12-04 | Scania Cv Ab | Method of Operating a Cooling System, Computer Program, Computer-Readable Medium, Control arrangement, Cooling System, and Vehicle |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10266856A (en) * | 1997-03-21 | 1998-10-06 | Toyota Motor Corp | Cooling device for hybrid vehicle |
| US20030029167A1 (en) * | 2001-08-09 | 2003-02-13 | Deere & Company, A Delaware Corporation | Motor vehicle cooling system |
| EP2484878A2 (en) * | 2011-02-02 | 2012-08-08 | STILL GmbH | Cooling system for mobile work machine with combustion engine - electric drive |
-
2012
- 2012-10-21 GB GB1218881.9A patent/GB2497387A/en not_active Withdrawn
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10266856A (en) * | 1997-03-21 | 1998-10-06 | Toyota Motor Corp | Cooling device for hybrid vehicle |
| US20030029167A1 (en) * | 2001-08-09 | 2003-02-13 | Deere & Company, A Delaware Corporation | Motor vehicle cooling system |
| EP2484878A2 (en) * | 2011-02-02 | 2012-08-08 | STILL GmbH | Cooling system for mobile work machine with combustion engine - electric drive |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE2250670A1 (en) * | 2022-06-03 | 2023-12-04 | Scania Cv Ab | Method of Operating a Cooling System, Computer Program, Computer-Readable Medium, Control arrangement, Cooling System, and Vehicle |
| WO2023234826A1 (en) * | 2022-06-03 | 2023-12-07 | Scania Cv Ab | Method of operating a cooling system, computer program, computer-readable medium, control arrangement, cooling system, and vehicle |
| SE545797C2 (en) * | 2022-06-03 | 2024-02-06 | Scania Cv Ab | Method of Operating a Cooling System, Computer Program, Computer-Readable Medium, Control arrangement, Cooling System, and Vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| GB201218881D0 (en) | 2012-12-05 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |