WO2014075154A1 - Tire inflating system - Google Patents
Tire inflating system Download PDFInfo
- Publication number
- WO2014075154A1 WO2014075154A1 PCT/BR2012/000459 BR2012000459W WO2014075154A1 WO 2014075154 A1 WO2014075154 A1 WO 2014075154A1 BR 2012000459 W BR2012000459 W BR 2012000459W WO 2014075154 A1 WO2014075154 A1 WO 2014075154A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- tire
- valve
- shut
- tires
- air
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C23/00—Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
- B60C23/001—Devices for manually or automatically controlling or distributing tyre pressure whilst the vehicle is moving
- B60C23/003—Devices for manually or automatically controlling or distributing tyre pressure whilst the vehicle is moving comprising rotational joints between vehicle-mounted pressure sources and the tyres
- B60C23/00372—Devices for manually or automatically controlling or distributing tyre pressure whilst the vehicle is moving comprising rotational joints between vehicle-mounted pressure sources and the tyres characterised by fluid diagrams
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C23/00—Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
- B60C23/001—Devices for manually or automatically controlling or distributing tyre pressure whilst the vehicle is moving
- B60C23/003—Devices for manually or automatically controlling or distributing tyre pressure whilst the vehicle is moving comprising rotational joints between vehicle-mounted pressure sources and the tyres
- B60C23/00309—Devices for manually or automatically controlling or distributing tyre pressure whilst the vehicle is moving comprising rotational joints between vehicle-mounted pressure sources and the tyres characterised by the location of the components, e.g. valves, sealings, conduits or sensors
- B60C23/00318—Devices for manually or automatically controlling or distributing tyre pressure whilst the vehicle is moving comprising rotational joints between vehicle-mounted pressure sources and the tyres characterised by the location of the components, e.g. valves, sealings, conduits or sensors on the wheels or the hubs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C23/00—Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
- B60C23/001—Devices for manually or automatically controlling or distributing tyre pressure whilst the vehicle is moving
- B60C23/003—Devices for manually or automatically controlling or distributing tyre pressure whilst the vehicle is moving comprising rotational joints between vehicle-mounted pressure sources and the tyres
- B60C23/00354—Details of valves
Definitions
- the present invention relates to a tire inflating system for vehicles and primarily for trucks and lorries.
- the supply of air pressure to a tire is carried out by means of an apparatus which comprises a hose having at its end a mouthpiece, a pressure indicator and a manually activated valve, which permits the introduction of air by pressure in the tire until the pressure indicator reaches the required pressure for the type of vehicle.
- Vehicle tires have always been an important part of transportation vehicles and this is particularly true with trucks and other vehicles having multiple tires. Although proper pressure is known to be important, the time required often induces a truck driver to sidestep an appropriate checking operation, and to check with an appropriate frequency. Of course, the time required to check the tire pressures increases with the number of tires, so one can easily realize the effort it takes to for instance check 16 tires, or even more.
- a tire inflating unit for inflating the tires on a multi-wheeled vehicle comprises a supply line for compressed air, a plurality of air passages connected to the supply line, a pressure regulator in the supply line and positioned to regulate the pressure in all said passages to the same predetermined amount, each of said passages terminating in at least one exit port, said passages extending longitudinally and transversely to position said exit ports adjacent to the wheels on a multi-wheeled vehicle when said vehicle is positioned in said unit, each of said exit ports consisting of a quick-connect coupling unit adapted to open to permit passage of air from said supply line to a tire on said vehicle when coupled to a mating coupling connected to the valve of said tire.
- this construction is rather complicated and requires a large investment for the provider, for instance a petrol station.
- this known construction is foreseen for filling all tires to the same
- CTIS devices include controls for deflating tires for better traction on sand, mud or other soft surfaces, and controls to re-inflate the tires for harder surfaces, such as pavement.
- ATIS arrangements typically monitor tire pressure and automatically add air to maintain a pre-set pressure. Both these systems include an onboard pressurized air source and a distribution system to direct air to each wheel/tire unit. These systems also include pressure sensors to detect air pressure in each tire.
- Both the CTIS and the ATIS systems have the disadvantage of requiring an onboard source of pressurized air and a monitoring of the pressures in the tires. This necessitates elaborate and costly extra equipment for the truck, and also results in extra maintenance costs.
- Another purpose of the present invention is to provide a simple panel with several switches, one for each tire (or group of tires) , where the user can select and energize the respective shut-off valve, thereby allowing air to flow into the desired tire (or group of tires) .
- Another purpose of the present invention is to reduce onboard equipment.
- Another purpose of the present invention is, when so desired, to inflate each tire, or group of tires, individually.
- Figure 1 shows in a stylized way the tire inflate system according to the present invention.
- FIG. 2 shows one detail of the present invention in accordance with one embodiment.
- Figure 3 shows the same detail as Figure 2, however according to another embodiment .
- Figure 4 shows the connections to one individual tire, according to the present invention.
- Figure 5 shows again the connections, to one tire/wheel unit, according to the present invention.
- reference 1 indicates a hose or conduit end which can be attached to an air compressor at a
- This pneumatic inlet is connected to all tires, including the tires on a possible trailer. Further, the system has a hub 2 to direct the pneumatic lines and the ires, to the specific tyres.
- the trailer has a corresponding hub 3.
- Pneumatic hoses 4 lead the pressurized air from the hub to the respective tire.
- One flexible hose 5 leads the pressurized air from the first hub 2 to the second hub 3, where the air is further distributed via hoses 6 to the tires of the trailer.
- FIG. 2 shows again the connection port 1 for the external air source.
- Reference numeral 7 indicates an electrical panel not far from connection port 1. Typically, the voltage is 24 V, but other voltages are feasible.
- the compressed air is led from connection port 1 via main line 8 and branch line 9 to an axle filling valve or shut-off valve 10.
- This axle filling valve 10 is controlled by electrical panel 7, and said control panel 7 is electrically connected to said filling valve via electrical conduit 15.
- filling valve 10 opens, then the air flows from branch line 9 further into axle filling line 11, and then via a rotating joint 12 and the wheel hub 13 into tire 14. Both wheel/tires on the same axle are filled simultaneously by opening the same valve.
- the rotating joint 12 (and 12' and 12" below) is a well-known standard joint, used in for instance the Rodoar and the Tacoar systems, for instance the product sold in Brazil under the commercial name "Cinematico" (occasionally Cinernatico Resfri Ar") , whose construction is well known and herewith incorporated by this reference. Further examples of this technology are disclosed in for instance the Brazilian patent documents PI9100871-9, PI9301741-3, PI9501561-2 and PI0405031-2, all herewith incorporated by reference.
- the shut-off valve 10 (also 10' and 10" below) can be of any well-known construction. As a mere example, reference is made to www.norgren.com.br/produtos/pdfs/valvulas/H90.pdf. See for instance model 2/2 NF. This reference is herewith incorporated by this reference.
- Figure 3 shows a construction that is somewhat more robust than the construction of Figure 2.
- the air enters via connection port 1 into main line 8 r and then into branch line 9' and axle filling line 11' .
- each tire 14' has its own air filling valve 10' at or within the hub, so that the valve 10' rotates with the wheel.
- the air flows from axle filling line 11' via a rotating joint 12' and into said valve 10' .
- the pressurized air is shut off before the rotating joint 12' , thereby avoiding possible leakage in the rotating joint.
- the two filling valves 10' are controlled via electrical conduits 15' and sliding terminals within rotating joints 12' .
- connection port 1 The electrical and pneumatic architecture for one tire is shown in Figure 4.
- an external air source is connected at connection port 1 and is led via main line 8" to a branch line 9" and then further via a rotating joint 12" and a shut-off valve 10" into the tire.
- the valve 10" is activated by the electrical panel 7" via electrical conduit 15", which is led over sliding terminals (not shown) through rotating joint 12".
- the valve 10" can close the access of the pressurized air upstream of rotating joint 12", thereby avoiding any leakage in said rotating joint when the vehicle is running.
- continuous line 15" illustrates the electrical conduit which goes from the electrical panel (not shown) and to the rotating shut-off valve 10".
- the pressurized air comes via line 9" (shown by dotted line) and goes via rotating joint 12" and valve 10" into the tire 14" via tire filling hose 16".
- the truck driver or any other person can only check the pressures in the individual tires when the truck is parked. Then he connects the external air source hose to the connection port 1 on the truck. After that, he sets the desired air pressure on the external air source.
- an electrical switch in the control panel 7 he then selects the desired tire (or axle with two tires) to be pressurized, thereby allowing air to flow to the selected tire(s).
- the electrical switch energizes a solenoid to move the pneumatic filling valve to the open position. As soon as energy is switched off, the valve returns to closed position. The pressure is controlled by the external source. As soon as the external source reaches the desired pressure, the user should switch off the desired tire, thereby closing the valve.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
- Tires In General (AREA)
Abstract
The present invention refers to a tire inflating system for vehicles, in particular trucks and lorries. It comprises a main line (8) for pressurized air, which main line has a plurality of branch lines (9, 9', 9"), each branch line being connected to a tire via a shut-off valve (10, 10', 10"), which shut-off valve can be activated by electrical control means (7, 7', 7"). The system is pressurized by an external air source and not by an air source on board.
Description
" TIRE INFLATING SYSTEM"
The present invention relates to a tire inflating system for vehicles and primarily for trucks and lorries.
Generally, the supply of air pressure to a tire is carried out by means of an apparatus which comprises a hose having at its end a mouthpiece, a pressure indicator and a manually activated valve, which permits the introduction of air by pressure in the tire until the pressure indicator reaches the required pressure for the type of vehicle.
Vehicle tires have always been an important part of transportation vehicles and this is particularly true with trucks and other vehicles having multiple tires. Although proper pressure is known to be important, the time required often induces a truck driver to sidestep an appropriate checking operation, and to check with an appropriate frequency. Of course, the time required to check the tire pressures increases with the number of tires, so one can easily realize the effort it takes to for instance check 16 tires, or even more.
Solutions have been suggested to overcome the time- consuming tire inflation procedure on for instance trucks. For instance, in US 3 913 632 a tire inflating unit for inflating the tires on a multi-wheeled vehicle is disclosed. It comprises a supply line for compressed air, a plurality of air passages connected to the supply line, a pressure regulator in the supply line and positioned to regulate the pressure in all said passages to the same predetermined amount, each of said passages terminating in at least one exit port, said passages extending longitudinally and transversely to position said exit ports adjacent to the wheels on a multi-wheeled vehicle when said vehicle is positioned in said unit, each of said exit ports consisting of a quick-connect coupling unit adapted to open
to permit passage of air from said supply line to a tire on said vehicle when coupled to a mating coupling connected to the valve of said tire. However, this construction is rather complicated and requires a large investment for the provider, for instance a petrol station. Moreover, this known construction is foreseen for filling all tires to the same predetermined pressure, but often that is not what the truck driver wants.
Central Tire Inflation Systems (for instance the so called Dana Spicer CTIS) and Automatic Tire Inflation Systems (ATIS) are well known, going back to the 1940s. CTIS devices include controls for deflating tires for better traction on sand, mud or other soft surfaces, and controls to re-inflate the tires for harder surfaces, such as pavement. ATIS arrangements typically monitor tire pressure and automatically add air to maintain a pre-set pressure. Both these systems include an onboard pressurized air source and a distribution system to direct air to each wheel/tire unit. These systems also include pressure sensors to detect air pressure in each tire.
Both the CTIS and the ATIS systems have the disadvantage of requiring an onboard source of pressurized air and a monitoring of the pressures in the tires. This necessitates elaborate and costly extra equipment for the truck, and also results in extra maintenance costs.
Another known system in Brazil is the so called "Rodoar" which in practice is similar to ATIS. Again, it has the disadvantage of requiring an onboard air source and monitoring equipment for the pressure in each wheel/tire unit. Moreover, occurring air leaks cause compressor wear and extra fuel consumption.
In view of the above, it is a main purpose of the present invention to provide a tire inflating system that
is quick and easy to handle, also for a large amount of tires.
Another purpose of the present invention is to provide a simple panel with several switches, one for each tire (or group of tires) , where the user can select and energize the respective shut-off valve, thereby allowing air to flow into the desired tire (or group of tires) .
Another purpose of the present invention is to reduce onboard equipment.
Another purpose of the present invention is, when so desired, to inflate each tire, or group of tires, individually.
These and other purposes have been attained in a surprisingly efficient and easy manner thanks to the characterizing features of the present invention.
For illustrative but non-limiting purposes, a preferred embodiment of the invention will now be described, with reference to the appended drawings. These are herewith briefly presented:
Figure 1 shows in a stylized way the tire inflate system according to the present invention.
Figure 2 shows one detail of the present invention in accordance with one embodiment.
Figure 3 shows the same detail as Figure 2, however according to another embodiment .
Figure 4 shows the connections to one individual tire, according to the present invention.
Figure 5 shows again the connections, to one tire/wheel unit, according to the present invention.
In Figure 1, reference 1 indicates a hose or conduit end which can be attached to an air compressor at a
workshop or a petrol station. This pneumatic inlet is connected to all tires, including the tires on a possible trailer. Further, the system has a hub 2 to direct the
pneumatic lines and the ires, to the specific tyres. The trailer has a corresponding hub 3. Pneumatic hoses 4 lead the pressurized air from the hub to the respective tire. One flexible hose 5 leads the pressurized air from the first hub 2 to the second hub 3, where the air is further distributed via hoses 6 to the tires of the trailer.
Figure 2 shows again the connection port 1 for the external air source. Reference numeral 7 indicates an electrical panel not far from connection port 1. Typically, the voltage is 24 V, but other voltages are feasible. The compressed air is led from connection port 1 via main line 8 and branch line 9 to an axle filling valve or shut-off valve 10. This axle filling valve 10 is controlled by electrical panel 7, and said control panel 7 is electrically connected to said filling valve via electrical conduit 15. When filling valve 10 opens, then the air flows from branch line 9 further into axle filling line 11, and then via a rotating joint 12 and the wheel hub 13 into tire 14. Both wheel/tires on the same axle are filled simultaneously by opening the same valve.
The rotating joint 12 (and 12' and 12" below) is a well-known standard joint, used in for instance the Rodoar and the Tacoar systems, for instance the product sold in Brazil under the commercial name "Cinematico" (occasionally Cinernatico Resfri Ar") , whose construction is well known and herewith incorporated by this reference. Further examples of this technology are disclosed in for instance the Brazilian patent documents PI9100871-9, PI9301741-3, PI9501561-2 and PI0405031-2, all herewith incorporated by reference.
The shut-off valve 10 (also 10' and 10" below) can be of any well-known construction. As a mere example, reference is made to www.norgren.com.br/produtos/pdfs/valvulas/H90.pdf. See for
instance model 2/2 NF. This reference is herewith incorporated by this reference.
Figure 3 shows a construction that is somewhat more robust than the construction of Figure 2. The air enters via connection port 1 into main line 8r and then into branch line 9' and axle filling line 11' . However, instead of a common axle filling valve 10, each tire 14' has its own air filling valve 10' at or within the hub, so that the valve 10' rotates with the wheel. The air flows from axle filling line 11' via a rotating joint 12' and into said valve 10' . When the valve is closed, then the pressurized air is shut off before the rotating joint 12' , thereby avoiding possible leakage in the rotating joint. The two filling valves 10' are controlled via electrical conduits 15' and sliding terminals within rotating joints 12' .
The electrical and pneumatic architecture for one tire is shown in Figure 4. As described above, an external air source is connected at connection port 1 and is led via main line 8" to a branch line 9" and then further via a rotating joint 12" and a shut-off valve 10" into the tire. The valve 10" is activated by the electrical panel 7" via electrical conduit 15", which is led over sliding terminals (not shown) through rotating joint 12". In the same way as in Figure 3, the valve 10" can close the access of the pressurized air upstream of rotating joint 12", thereby avoiding any leakage in said rotating joint when the vehicle is running.
Again in Figure 5, continuous line 15" illustrates the electrical conduit which goes from the electrical panel (not shown) and to the rotating shut-off valve 10". The pressurized air comes via line 9" (shown by dotted line) and goes via rotating joint 12" and valve 10" into the tire 14" via tire filling hose 16".
As mentioned, the truck driver or any other person can only check the pressures in the individual tires when the truck is parked. Then he connects the external air source hose to the connection port 1 on the truck. After that, he sets the desired air pressure on the external air source. By means of an electrical switch in the control panel 7, he then selects the desired tire (or axle with two tires) to be pressurized, thereby allowing air to flow to the selected tire(s). The electrical switch energizes a solenoid to move the pneumatic filling valve to the open position. As soon as energy is switched off, the valve returns to closed position. The pressure is controlled by the external source. As soon as the external source reaches the desired pressure, the user should switch off the desired tire, thereby closing the valve.
Claims
1. Tire inflating system for vehicles, which system comprises a main line (8) for pressurized air, which main line has a plurality of branch lines (9, 9', 9") , each branch line being connected to a tire or a pair of tires via a shut-off valve (10, 10', 10"), which shut-off valve can be activated by electrical control means (7, 7', 7"), characterized in that said system is pressurized by an external air source.
2. Tire inflating system according to claim 1, characterized in that it is entirely onboard said vehicle.
3. Tire inflating system according to claim 1 or 2, characterized in that a branch line (9) is connected to a shut-off valve (10) which opens and shuts the access of pressurized air to both tires (14) on a wheel axle.
4. Tire inflating system according to claim 1 or 2, characterized in that a branch line (9', 9") is directly or indirectly connected to two shut-off valves (10', 10"), one for either tire (14', 14").
5. Tire inflating system according to claim 4, characterized in that each valve (10', 10") is accommodated at the center of a rotating wheel and is connected to the pressurized air via a rotating joint (12', 12").
6. Tire inflating system according to claim 5, characterized in that each valve (10', 10") shuts off the access of pressurized air upstream of the rotating joint (12', 12").
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/BR2012/000459 WO2014075154A1 (en) | 2012-11-19 | 2012-11-19 | Tire inflating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/BR2012/000459 WO2014075154A1 (en) | 2012-11-19 | 2012-11-19 | Tire inflating system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2014075154A1 true WO2014075154A1 (en) | 2014-05-22 |
Family
ID=50730413
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/BR2012/000459 WO2014075154A1 (en) | 2012-11-19 | 2012-11-19 | Tire inflating system |
Country Status (1)
| Country | Link |
|---|---|
| WO (1) | WO2014075154A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3354488A1 (en) * | 2017-01-31 | 2018-08-01 | WABCO GmbH | Tyre pressure regulating installation |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6098682A (en) * | 1998-02-04 | 2000-08-08 | Deere & Company | Tire pressure control system |
| BR9907816A (en) * | 1998-12-11 | 2002-01-02 | Case Corp | Central tire inflation system and method of regulating tire pressure in a vehicle |
| BR0303930A (en) * | 2002-10-08 | 2004-10-13 | Col Ven Sa | Pressure control system and process of tires of a self-propelled vehicle |
| US20090084481A1 (en) * | 2007-10-01 | 2009-04-02 | Kalavitz Michael V | Tire inflation control method and apparatus |
-
2012
- 2012-11-19 WO PCT/BR2012/000459 patent/WO2014075154A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6098682A (en) * | 1998-02-04 | 2000-08-08 | Deere & Company | Tire pressure control system |
| BR9907816A (en) * | 1998-12-11 | 2002-01-02 | Case Corp | Central tire inflation system and method of regulating tire pressure in a vehicle |
| BR0303930A (en) * | 2002-10-08 | 2004-10-13 | Col Ven Sa | Pressure control system and process of tires of a self-propelled vehicle |
| US20090084481A1 (en) * | 2007-10-01 | 2009-04-02 | Kalavitz Michael V | Tire inflation control method and apparatus |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3354488A1 (en) * | 2017-01-31 | 2018-08-01 | WABCO GmbH | Tyre pressure regulating installation |
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