POWER GENERATING SHOCK ABSORBER
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Synopsis
During the everyday usage of an automobile, only 10–16% of the fuel energy is used to drive the car—to overcome the resistance from road friction and air drag. A conventional automotive shock absorber dampens suspension movement to produce a controlled action that keeps the tire firmly on the road. This is done by converting the kinetic energy into heat energy, which is then absorbed by the shock’s oil. This is the important loss is the dissipation of vibration energy by shock absorbers in the vehicle suspension under the excitation of road irregularity and vehicle acceleration or deceleration. In this paper we study the concepts of power generating shock absorber which can efficiently recover the vibration energy in a compact space.
INTRODUCTION
Road vehicles can expend a significant amount of energy in undesirable vertical motions that are induced by road bumps, and much of that is dissipated in conventional shock absorbers as they dampen the vertical motions. A conventional automotive shock absorber dampens suspension movement to produce a controlled action that keeps the tire firmly on the road. This is done by converting the kinetic energy into heat energy, which is then absorbed by the shock’s oil.
CONVENTIONAL SHOCK ABSORBERS
In this section we will first give an overview about the conventional types of shock absorbers, working of conventional shock absorbers and their applications.
2.1 Conventional Shock Absorbers
A Conventional Shock Absorber is a mechanical device designed to smooth out or damp shock impulse, and dissipate kinetic energy. You would be think that as shock absorbers dissipate energy then where tat energy goes...?
In most dashpots, energy is converted to heat inside the viscous fluid. In hydraulic cylinders, the hydraulic fluid heats up
In air cylinders, the hot air is usually exhausted to the atmosphere.
In electromagnetic types dashpots, the dissipated energy can be stored and used later.
During the everyday usage of an automobile, only 10–16% of the fuel energy is used to drive the car—to overcome the resistance from road friction and air drag. A conventional automotive shock absorber dampens suspension movement to produce a controlled action that keeps the tire firmly on the road. This is done by converting the kinetic energy into heat energy, which is then absorbed by the shock’s oil. This is the important loss is the dissipation of vibration energy by shock absorbers in the vehicle suspension under the excitation of road irregularity and vehicle acceleration or deceleration. In this paper we study the concepts of power generating shock absorber which can efficiently recover the vibration energy in a compact space.
INTRODUCTION
Road vehicles can expend a significant amount of energy in undesirable vertical motions that are induced by road bumps, and much of that is dissipated in conventional shock absorbers as they dampen the vertical motions. A conventional automotive shock absorber dampens suspension movement to produce a controlled action that keeps the tire firmly on the road. This is done by converting the kinetic energy into heat energy, which is then absorbed by the shock’s oil.
CONVENTIONAL SHOCK ABSORBERS
In this section we will first give an overview about the conventional types of shock absorbers, working of conventional shock absorbers and their applications.
2.1 Conventional Shock Absorbers
A Conventional Shock Absorber is a mechanical device designed to smooth out or damp shock impulse, and dissipate kinetic energy. You would be think that as shock absorbers dissipate energy then where tat energy goes...?
In most dashpots, energy is converted to heat inside the viscous fluid. In hydraulic cylinders, the hydraulic fluid heats up
In air cylinders, the hot air is usually exhausted to the atmosphere.
In electromagnetic types dashpots, the dissipated energy can be stored and used later.
POWER GENERATING SHOCK ABSORBER
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