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T. Sundararajan et al.
method of preventing overload, thereby reducing the number of warranty issues for
the company. So, in addition to the usual valve in the wheel which is used for inflation,
an additional valve opposite to the inflation valve was employed, called the pressure
relief valve (PRV) [1, 2].
This valve, which will be installed vertically opposite to the inflation valve, serves
to enhance the safety of the vehicle by avoiding catastrophic failure like tyre bursts.
Without overinflation, overloading becomes diffucult, and with a wheel having PRV,
overinflation will be impossible. The PRV will be fixed to the wheel with a permanent
seal to make sure that the warranty of the wheel and other auto components will
become void if someone tried to tamper the same. The PRV was made in such a way
that the design was simple, with low cost with little to no overall cost impact on the
wheel.
2 Issues with Overinflation & PRV’s Solution to the Same
Overinflation of wheels leads to uneven tire wear, with excessive wear at the center
[3]. This creates a necessity to retread (or) to replace the tire more frequently than
usual. The wheel–tire assembly serves as the primary suspension and shock absorbing
system of the vehicle. With an overinflated tire, the said function of the component
loses its complete potential, and steering vibrations happen. A properly inflated
tire theoretically has line contact and practically has surface contact with the road.
Overinflation theoretically has point contact and practically has very less surface
contact with the road. This, besides leading to lesser traction, also reduces the braking
effect on the vehicle. Also, at hazardously high pressure, the rim flange tends to bend,
and catastrophic failures like tire bursts happen. PRV functions as a single-point
solution to all the mentioned issues.
One of the supplementary issues which the PRV reduced was the wheel unbalance
issue. The inflation valve acts as a point of higher mass compared to the other sectors
of the wheel, which causes a static unbalance in the wheel. This unbalance will be
usually corrected by an additional balance weight which will be clamped onto the
front and/or rear flange. The fixage of PRV vertically opposite to the inflation valve
reduced the unbalance, as the PRV partially balanced the additional mass of the
inflation valve.
3 Mechanism of Working
The main advantage of the PRV is the simplicity of its design and working. The PRV
fits in a hole of diameter which is equal to the diameter of the inflation valve [4]. The
ultimate aim of the component is to release the excess pressure of the wheel, and so,
the redundant parts were removed, and complete optimization was done. The PRV
consists of a spring which is under compression and calibrated to the required value
T. Sundararajan et al.
method of preventing overload, thereby reducing the number of warranty issues for
the company. So, in addition to the usual valve in the wheel which is used for inflation,
an additional valve opposite to the inflation valve was employed, called the pressure
relief valve (PRV) [1, 2].
This valve, which will be installed vertically opposite to the inflation valve, serves
to enhance the safety of the vehicle by avoiding catastrophic failure like tyre bursts.
Without overinflation, overloading becomes diffucult, and with a wheel having PRV,
overinflation will be impossible. The PRV will be fixed to the wheel with a permanent
seal to make sure that the warranty of the wheel and other auto components will
become void if someone tried to tamper the same. The PRV was made in such a way
that the design was simple, with low cost with little to no overall cost impact on the
wheel.
2 Issues with Overinflation & PRV’s Solution to the Same
Overinflation of wheels leads to uneven tire wear, with excessive wear at the center
[3]. This creates a necessity to retread (or) to replace the tire more frequently than
usual. The wheel–tire assembly serves as the primary suspension and shock absorbing
system of the vehicle. With an overinflated tire, the said function of the component
loses its complete potential, and steering vibrations happen. A properly inflated
tire theoretically has line contact and practically has surface contact with the road.
Overinflation theoretically has point contact and practically has very less surface
contact with the road. This, besides leading to lesser traction, also reduces the braking
effect on the vehicle. Also, at hazardously high pressure, the rim flange tends to bend,
and catastrophic failures like tire bursts happen. PRV functions as a single-point
solution to all the mentioned issues.
One of the supplementary issues which the PRV reduced was the wheel unbalance
issue. The inflation valve acts as a point of higher mass compared to the other sectors
of the wheel, which causes a static unbalance in the wheel. This unbalance will be
usually corrected by an additional balance weight which will be clamped onto the
front and/or rear flange. The fixage of PRV vertically opposite to the inflation valve
reduced the unbalance, as the PRV partially balanced the additional mass of the
inflation valve.
3 Mechanism of Working
The main advantage of the PRV is the simplicity of its design and working. The PRV
fits in a hole of diameter which is equal to the diameter of the inflation valve [4]. The
ultimate aim of the component is to release the excess pressure of the wheel, and so,
the redundant parts were removed, and complete optimization was done. The PRV
consists of a spring which is under compression and calibrated to the required value