New Trends In Cars

Automobiles are there for around 100 years. In these years automobiles especially cars undergone tremendous improvements and as a result we travel in today’s sophisticated and highly advanced automobiles. But the development is not yet finished and new Research and Development is being done to maximize the comforts and efficiency of the automobiles. So we have tried to sum up the advanced technologies in this paper. These advancement are categorized in various department such as advancements in transmission engine alternative fuels. Also we have included the new Research and Development being done in the two wheeler   sector .

New Trends in Advanced Engine Technology

Advanced Engine Technology
To reduce exhaust emissions and fuel consumption, technology is being developed either to modify conventional engines or to provide alternatives to conventional engines. Selected items in each of these areas will be discussed in the following paragraphs.

Conventional Engine Modifications

Direct Injection(DI)

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Some gasoline engines are already available with direct fuel injection, with the fuel injector mounted directly into the cylinder head combustion chamber as shown in Figure 5-9. These engines are called direct injection spark ignition (DISI) engines. DISI injection system requires much higher-pressure fuel than port injectors (to overcome the in-cylinder compressed air pressure).
The combustion process generally used with direct injection is a combination of homogeneous and stratified charge. Homogeneous charge is used for heavy accelerations and wide-open throttle operation where fuel is injected during the intake stroke to provide near stoihiometric mixtures for combustion. For light loads and cruising conditions, a stratified charge is used, which consists of pockets of combustible mixture within a larger volume of fuel-lean mixture. The combustible mixture layer is concentrated around the spark plug. This approach results in higher thermal...