EXHAUST GAS RECIRCULATION
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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
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.
MECHANICAL ENGG
SHOCK ABSORBERS
In the present scenario of automobile industry manufacturers are trying to produce comfortable and safe vehicles which the consumers are looking for. A shock absorber is a damping element of the vehicle suspension, and its performance directly affects the comfortability, dynamic load of the wheel and dynamic stroke of the suspension. The conventional type of shock absorbers has got the main drawback that it causes foaming of the fluid at high speeds of operation. This results in a decrease of