SHOCK ABSORBERS
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MECHANICAL ENGG
AUTOMATIC TRANSMISSION IN CAR
An automatic transmission is a type of motor vehicle transmission that can automatically change gear ratios as the vehicle moves, freeing the driver from having to shift gears manually. These are broadly of two types viz., the semi automatic and fully automatic ones. In the first type only clutch is operated automatically, the driver still has to select gears. In the later type which is employed in modern cars, even the gear are changed automatically by a control mechanism which is actuated b
MECHANICAL ENGG
COMMON-RAIL TECHNOLOGY (CRDI ENGINE)
Common-rail technology is intended to improve the pulverization process. Conventional direct injection diesel engines must repeatedly generate fuel pressure for each injection. But in the CRDI engines the pressure is built up independently of the injection sequence and remains permanently available in the fuel line. CRDI system that uses an ion sensor to provide real-time combustion data for each cylinder. The common rail upstream of the cylinders acts as an accumulator, distributing the fuel
MECHANICAL ENGG
EXHAUST GAS RECIRCULATION
All internal combustion engines generate power by creating explosions using fuel and air. These explosions occur inside the engine's cylinders and push the pistons down, which turns the crankshaft. Some of the power thus produced is used to prepare the cylinders for the next explosion by forcing the exhaust gases out of the cylinder, drawing in air (or fuel-air mixture in non-diesel engines), and compressing the air or fuel-air mixture before the fuel is ignited.
MECHANICAL ENGG
HY-WIRE CAR
Hy-wire car has a fuel cell stack, which powers an electric motor connected to the wheels. Instead of mechanical and hydraulic linkages, it has a drive by wire system where a computer actually operates the components that move the wheels, activate the brakes and so on, and based on input from an electronic controller.
