FORM 2
THE PATENTS ACT, 1970
(39 of 1970)
&
THE PATENT RULES, 2003
COMPLETE SPECIFICATION
(See section 10 and rule 13)
1. TITLE OF THE INVENTION
"TYRE AIR PRESSURE MANAGEMENT SYSTEM AND METHOD OF CONSTRUCTION TEHREOF"
2. APPLICANT
VE COMMERCIAL VEHICLES LTD., An Indian National having its place of business at 102, INDUSTRIAL AREA NO.1, PITHAMPUR-454775, DIST. DHAR, MADHYA PRADESH, INDIA

TECHNICAL FIELD
[001] The present subject matter relates to tyre air pressure management system and method of construction thereof.
BACKGROUND
[002] The deterioration of tire life, due to unregulated tire pressure is one of the major challenges for end user and automobile industries. According to commercial vehicle safety alliance (CVSA), tires/wheels are the second leading cause of roadside inspection citations. In orderto have optimum performance of vehicle, tires must have a correct/appropriate air pressure. Due to this, major challenge to vehicle operators is regular checking of tire air pressure for protection of tire life, safety and automotive investment of owner. As per most of the fleet owners, tires are the second highest vehicle operating cost after fuel and a drop in tire pressure by just a few PSI can result in the reduction of mileage, tire life, safety, and vehicle performance of the vehicle. It becomes a serious concern, if tire pressure is found about 20% or more underinflated. According to heavy duty trucking magazine, about 535% of roadside breakdowns are due to tire failures. The early and uneven tire wear causing increase in operating and maintenance cost and it is the result of improper maintenance of tire pressure in the vehicle. Most of the tire companies recommend to check the tire pressure at least once a week. In today's fast paced life, regular monitoring of tire pressure along with inflation of tire up-to recommended pressure is becoming a tedious job for the driver, since it takes almost 15 to 30 minutes to check all tire pressure and inflated, if found underinflated.
[003] Commercial vehicle tires lose air pressure, due to number of reasons, such as air escape between improperly tightened valves as well as between the bead and wheel, torn rubber grommets or even valve cores blocked by open dirt.
[004] The early tire wear resulting their early scrapping is a serious concern not only for automobile industries but also for society. Tires are not biodegradable, so they need to be recycled and repurposed rather than discarded. Worldwide, efforts are underway to address the issue of used tires.

[005] It is appear to be a major drawback in the automobile industries. As the regular checking of tire air pressure for protecting safety and automotive investment. As per most of the fleet owners, tires are the second highest vehicle operating cost after fuel. Driven by studies, a drop in tire pressure by just a few PSI can result in the reduction of mileage, tire life, safety, and vehicle performance due to increase in rolling resistance of vehicle. It becomes a serious concern if tire pressure is found 20% or more underinflated. According to heavy duty trucking magazine, about 53.5% of roadside breakdowns are the cause of tire failures. The early and uneven tire wear causing increase in operating and maintenance cost is the result of improper maintenance of tire pressure in vehicle. Most of the tire companies recommend to check the tire pressure at least once a week. In today's fast paced life, regular monitoring of tire pressure along with inflation of tire up-to recommended pressure is becoming a tedious job for the driver since it takes almost 15 to 30 minutes to check all tire pressure and inflate if found underinflated.
[006] Commercial vehicle tires lose air pressure due to number of reasons such as air escape between improperly tightened valves as well as between the bead and wheel, torn rubber grommets or even valve cores blocked by open dirt.
[007] Hence the proper and regular checking of air pressure in tyre is an important and also there is a need of tyre inflation system having unique air passage and sealing system to monitor and maintain the life of tyre and also provide proper safety.
[008] Therefore there is an unmet need of auto-tire inflation system. The auto-tire inflation system not only monitors and displays the tire pressure regularly to the driver but also inflate it whenever the pressure falls below recommended level. In Addition, this system sends SMS to vehicle owner in an event of vehicle breakdown due to tire puncture. Also it is fuel efficiency and environmentally friendly system
SUMMARY OFTHE SUBJECT MATTER
[009] The present subject solve the aforementioned and other problems by providing an auto-tire inflation system not only monitors and displays the tire pressure regularly to the driver but also inflate it whenever the pressure falls below recommended level. In addition, this system sends SMS to vehicle owner in an event

of vehicle breakdown due to tire puncture. Apart from reducing the tire wear, the auto-tire inflation system provides value additional benefits of superior ride comfort, reduced steering effort and safe vehicle handling for the drivers due to regular maintenance of tire pressure. This system also helps in improving the fuel efficiency of vehicle by avoiding the engine to work harder due to increased rolling resistance of under inflated tire. With the recent oil price hikes and growing concern of environmental issues, this system addresses a potential improvement in mileage; tire wear reduction; and an increase in handling and tire performance in diverse conditions.
[0010] The present subject matter relates to an auto-tire inflation system
for monitoring and displaying tire pressure in automobile or vehicle. The auto-tire inflation system for monitoring and displaying tire pressure in automobile or vehicle comprising at least one pressure sensor to sense or measure tire pressure and provide real time data; atleast one controller unit to control the tire pressure on pre¬set tire air pressure value; atleast one solenoid valve to receive a command from the controller unit to inflate and deflate the tire pressure based on pre-set tire air pressure value; and a non-return valve act as one way flow of tire air pressure on pre¬determined value; a display to display the real time tire air pressure data to user. Here the pressure sensor provides real time data to controller unit. Whereby the controller unit compares the tire pressure with pre-determined tire pressure value configured in controller unit and inflate the tire, if the value of air pressure is low than the set lower value pre-determined tire pressure and deflate, if the value of air pressure is higher than the set lower value pre-determined tire pressure. Further the solenoid valve operates on the command of the controller unit to inflate ad deflate the tire to maintain the optimal air pressure in the tire. The non-return valve act as one way flow of tire air pressure on pre-determined value set in the controller unit. Further the controller unit comprising programmed logic to send alert message to userto inform breakdown condition of vehicle.
[0011] The integrated system of auto-tire inflation system monitors the
tire pressure regularly with the help of pressure sensor, which provides the real time data to controller the pressure in the tire of the vehicle. After receiving data from

pressure sensor, the controller compares this pressure value with recommended set pressure value configured or stored in controller. If the pressure is found below set value, then the solenoid valve actuates, which inflates the tire up to recommended tire pressure level. As soon as the tire is inflated up to recommended pressure value, then the controller commands to close the solenoid valve. The non-return valve provided in air-line takes care of avoiding reverse flow from tire to auxiliary air tank which is used as air reservoir if the reservoir pressure is lower than the tire pressure. The seal with dual lips unique designed for this application provides a leak proof arrangement between the rotating parts i.e. stub axle knuckle. Whenever the pressure sensor senses sudden tire pressure drops due to puncture or any other leakage in pneumatic circuit, the controller stops inflating the tire by closing the solenoid valve. This logic has been programmed in controllerto warn the driver through buzzer, whenever the tire is punctured and the screen display in cabin shows punctured tire location. The GSM module integrated with controller triggers an SMS to the vehicle owner informing him about the vehicle owner informing him about the vehicle breakdown due to puncture.
[0012] In one embodiment, the present subject matter discloses air
passage design in stub axle for air inflation without reduction in structural strength of Stub axle. The design of sealing mechanism and wheel cap with the provision of hole and hollow shaft assisting in air seal and avoiding air leakage is the uniqueness of the present subject matter. The present subject matter has integrated control box consisting of solenoid valve, pressure sensor and non-return valve in system. The integration of safety & alert features such as provision of warning buzzer in vehicle whenever the tire is punctured with indication of punctured tire in cabin display and message alert to vehicle owner as the vehicle gets breakdown, if the tire punctures is also the most novel part of this innovation. On-board regular monitoring of tire pressure and inflation of tire at all-time whenever the pressure reduces below recommended level with least modification in vehicle design is highly innovative part of this system.
[0013] In another embodiment, the present subject matter disclose the
working principle of the present system by following steps: The integrated system in

vehicle monitors the tire pressure regularly with the help of pressure transducer which provides the real time data to controller. After receiving data from pressure transducer, the controller compares this pressure value with recommended set pressure value already stored in controller. If the pressure is found below set value, then the solenoid valve actuates which inflates the tire up to recommended tire pressure. As soon as the tire is inflated up to recommended pressure value, then the controller commands to close the solenoid valve. The non-return valve provided in air-line takes care of avoiding reverse flow from tire to auxiliary air tank which is used as air reservoir if the reservoir pressure is lower than the tire pressure. The seal with dual lips, a unique designed for this application provides a leak proof arrangement between the rotating parts i.e. wheel cap and the stationary part i.e. stub axle knuckle. Whenever the pressure transducer senses sudden tire pressure drop, due to puncture or any other leakage in pneumatic circuit, the controller stops inflating the tire by closing the solenoid valve. This logic has been programmed in controller in controller to make this system highly efficient.
[0014] There is also a logic programmed in controller to warn the driver
through buzzer whenever the tire is punctured and the screen display in cabin shows punctured tire location. The GSM module integrated with controller triggers an SMS to the vehicle owner informing him about the vehicle breakdown due to puncture.
[0015] The present subject matter disclose an operation of the present
system; wherein the pressure sensor gives data to the controller for taking necessary action of air inflation into tire. The controller activates solenoid valve upon requirement, solenoid allows one direction flow of air from pressurized air tank to wheel cap air gallery. The air seal, seal stopper and tube assembly connects the solenoid with wheel cap. In case of sudden pressure drop, pressure sensor gives signals to controller and which in action activates buzzer and SMS based alerts.
[0016] In one embodiment, the present subject matter eliminates the
need of skills of a technician in identifying the air pressure in the wheel. In automatic tyre inflation system does not required specialized skilled and technician.
[0017] It is to be understood that other embodiments of the present
disclosure will become readily apparent to those skilled in the art from the following

detailed description, wherein it is shown and described only various embodiments of the disclosure by way of illustration. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive.
BRIEF DESCRIPTION OF DRAWINGS
[0018] Aspects of the present disclosure are illustrated by way of
example(s), and not by way of limitation, in the accompanying drawings, wherein:
[0019] FIG. 1 is a cross sectional view of stub axle knuckle assembly fitted
with auto tire Inflation System with Seal components.
[0020] FIG. 2 is a circuit diagram of control unit of system.
[0021] FIG. 3 is a diagram of air seal used to control air leakage connected
to stub axle knuckle and wheel cap air gallery.
[0022] FIG. 4 is a diagram of seal stopper connected to stub axle knuckle
which is used to restrict the linear movement of air seal.
[0023] FIG. 5 is a diagram of wheel cap integrated with airflow passage
for supplying air to tire valve. It is mounted on stub axle knuckle.
[0024] FIG. 6 is a tube assembly diagram connected to tire valve and
wheel cap gallery for passing air.
[0025] FIG. 7 illustrated the working mechanism of the present system as
illustrated in FIG.1
DETAILED DESCRIPTION OF ILLUSTRATIVE EMBODIMENTS
[0026] The present disclosure relates generally to an automatic tire
inflation system and method for diagnostics and monitoring the inflation condition of tire during movement or stationary condition of the vehicle.
[0027] Referring to FIG. 1 illustrated a cross sectional view of stub axle
knuckle assembly fitted with Auto Tire Inflation System with seal components. It shows system component with their relevant location of mounting.
[0028] Referring to FIG. 2 illustrated is a circuit diagram of control unit
system. It shows input and output of the control system.

[0029] Referring to FIG. 3 illustrated is a diagram of air seal used to control
air leakage connected to stub axle knuckle and wheel cap air gallery. Seal is designed and developed in such a way that it can avoid air leakage cause due to mating of rotating parts.
[0030] Referring to FIG. 4 illustrated is a diagram of seal stopper
connected to stub axle knuckle which is used to restrict the linear movement of air seal. Continuous rotational movement may cause linear motion to seal, which can be avoided by seal stopper.
[0031] Referring to FIG. 5 illustrated is a diagram of wheel cap integrated
with airflow passage for supplying air to tire valve. Its act as reservoir for air supplied to tire. It is externally mounted at the center of tire.
[0032] Referring to FIG. 6 illustrated is a tube assembly diagram. It
connects tire valve and wheel cap gallery for passing air.
[0033] Referring to FIG. 7 illustrated is the working diagram of the present
system. It shows data and control single flowing through the system.
[0034] It is illustrated from above drawings that the present subject
matter relates to an auto-tire inflation system for monitoring and displaying tire pressure in automobile or vehicle. The auto-tire inflation system for monitoring and displaying tire pressure in automobile or vehicle comprising at least one pressure sensor to sense or measure tire pressure and provide real time data; atleast one controller unit to control the tire pressure on pre-set tire air pressure value; atleast one solenoid valve to receive a command from the controller unit to inflate and deflate the tire pressure based on pre-set tire air pressure value; and a non-return valve act as one way flow of tire air pressure on pre-determined value; a display to display the real time tire air pressure data to user. Here the pressure sensor provides real time data to controller unit. Whereby the controller unit compares the tire pressure with pre-determined tire pressure value configured in controller unit and inflate the tire, if the value of air pressure is low than the set lower value pre-determined tire pressure and deflate, if the value of air pressure is higher than the set lower value pre-determined tire pressure. Further the solenoid valve operates on the command of the controller unit to inflate ad deflate the tire to maintain the

optimal air pressure in the tire. The non-return valve act as one way flow of tire air pressure on pre-determined value set in the controller unit. Furtherthe controller unit comprising programmed logic to send alert message to user to inform breakdown condition of vehicle.
[0035] It would become abundantly clear to a person in the art, after
reading this specification that the present subject matter also provides a tire inflation system and method working thereof. More specifically, the present subject matter identify and display the inflation condition of the tire of the vehicle during running condition automatically, without the assistance or intervention of a tool or a technician and without departing from the spirit of the present subject matter. While the subject matter may be susceptible to various modifications and alternative forms, specific embodiments have been shown by way of example in the drawings and have been described herein. Alternate embodiments or modifications may be practiced without departing from the spirit of the present subject matter. The drawings shown are schematic drawings and may not be to the scale. While the drawings show some features of the subject matter, some features may be omitted. Alternatively, in some other cases some features may be emphasized while others are not. Further, the methods disclosed herein may be performed in manner and/or order in which the methods are explained. Alternatively, the methods may be performed in manner or order different than what is explained without departing from the spirit of the present subject matter. It should be understood that the subject matter is not intended to be limited to the particular forms disclosed. Rather, the subject matter is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the subject matter.

We claim:
1. An auto-tire inflation system for monitoring and displaying tire pressure in
automobile comprising:
(a) at least one pressure sensorto sense or measure tire pressure and provide real time data;
(b) atleast one controller unit to control the tire pressure on pre-set tire air pressure value;
(c) atleast one solenoid valve to receive a command from the controller unit to inflate and deflate the tire pressure based on pre-set tire air pressure value; and
(d) a non-return valve act as one way flow of tire air pressure on pre-determined value;
(e) a display to display the real time tire air pressure data to user.

2. The pressure sensor as claimed in claim 1, wherein pressure sensor provides real time data to controller unit.
3. The controller unit as claimed in claim 1, wherein controller unit compares the tire pressure with pre-determined tire pressure and inflate the tire, if the value of air pressure is low than the set lower value pre-determined tire pressure and deflate, if the value of air pressure is higher than the set lower value pre-determined tire pressure.
4. The solenoid valve as claimed in claim 1, wherein solenoid valve operates on the command of the controller unit to inflate ad deflate the tire to maintain the optimal air pressure in the tire.
5. The non-return valve as claimed in claim 1, wherein non-return valve act as one way flow of tire air pressure on pre-determined value set in the controller unit.
6. The controller unit as claimed in claim 1 comprising programmed logic to send alert message to user to inform breakdown condition of vehicle.