Seminar On Self inflating tyres -PPT and Report Download
- Detect when the air pressure in a particular tyre has dropped – This means they have to constantly (or intermittently) monitor the air pressure in each tyre.
- Notify the driver of the problem
- Inflate that tyre back to the proper level – This means there has to be an air supply as well as a check valve that opens only when needed.
- Parts of Any Self-inflating System
While the available tyre inflation systems vary in design, they share some common elements.
- They all use some type of valve to isolate individual tyres to prevent airflow from all tyres when one is being checked or inflated.
- They have a method for sensing the tyre pressures. This is addressed in most cases with central sensors that relay information to an electronic control unit and then to the driver.
- They have an air source, which is usually an existing inboard source such as braking or pneumatic systems. When using an existing system, however, they have to ensure that they don’t jeopardize its original function. For this reason, there are safety checks to ensure that there is enough air pressure for the source’s primary use before pulling air for tyre inflation.
- There has to be a way to get the air from the air source to the tyres, which is usually through the axle. Systems either use a sealed-hub axle with a hose from the hub to the tyre valve or else they run tubes through the axle with the axle acting as a conduit.
- There has to be a pressure relief vent to vent air from the tyre without risking damage to the hub or rear-axle seals
The idea behind the CTIS is to provide control over the air pressure in each tyre as a way to improve performance on different surfaces. For example, lowering the air pressure in a tyre creates a larger area of contact between the tyre and the ground and makes driving on softer ground much easier. It also does less damage to the surface. This is important on work sites and in agricultural fields. By giving the driver direct control over the air pressure in each tyre, maneuverability is greatly improved.
There are two main manufacturers of the CTIS: U.S.-based Dana Corporation and France-based Syegon (a division of GIAT). Dana Corporation has two versions, the CTIS for military use (developed by PSI) and the Tyre Pressure Control System (TPCS) for commercial, heavy machinery use. In the next section, we’ll take a look at the inner workings of a basic CTIS setup.
This type of system uses air from the same compressor that supplies air to the brakes. A pressure switch makes sure the brake system gets priority, preventing the CTIS from taking air from the supply tank until the brake system is fully charged.
Mechanical Project On Self inflating tyres
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