The cars based on diesel engined compared to petrol engines are more powerful, it is not surprising that the current market appetite switch to diesel cars with all the advantages that exist in the diesel-engined cars.

The main reason is the increasing price of fuel that inevitably force consumers to use a car with a fuel that is cheaper or even leave the conventional cars and switch to hybrid cars. Diesel cars with diesel fuel are more efficient than gasoline cars. But how about the pollution between diesel and gasoline cars, is it higher in diesel? Lets have a look below and break the myth about diesel engine based cars.
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Eco-driving or economic driving, its time to pay more attention on environment we live. We all know that fossil resources for making fuels will run out eventually, other than that pollution that being contributed mostly from our vehicles are very concerning. Not to mention that the numbers of vehicle kept on increasing each years.

Although we do know that fuels could be produced from chemical mix or bio-fuels, and its reducing the amount of pollution, but at the end it would be more better if we do eco-driving as well.
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‘Energy’ indicates (in general terms) a given amount of energy, with no reference to time, and it is measured in joules. In energy analysis it can refer to a given amount of a primary energy source, or to a given amount of an energy carrier. ‘Power’, on the other hand, indicates the given pace of an energy conversion in time the rate at which useful work is performed and its unit of measure is watts (joules per second). Power is intrinsically linked to the characteristics of the energy converter (generating power) and the useful work performed with such a power.

Unfortunately, in many applications of energy analysis the distinction between energy and power often becomes blurred because of the way data on energy flows are presented. In fact, when dealing with the analysis of the metabolism of human beings (endosomatic metabolism) or socio-economic systems (exosomatic metabolism), one gets easily confused because data on energy inputs are usually expressed on a time basis.
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The rapidly growing literature on biofuels and many initiatives looking for alternative energy sources shows an amazing variety of options proposed by experts and visionaries. All these options are being proposed as feasible and/or highly desirable solutions to replace our use of oil.

In order to ascertain whether or not a certain source of energy would be an appropriate input for a system, one must first carefully observe the characteristics of the energy system. We cannot feed gasoline to humans, or power a refrigerator with pizzas. When refuelling a vehicle in a modern gas station, the driver must first select the appropriate type of fuel: gas or diesel, regular or premium octane rating.
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These technologies affect engine performance either directly or indirectly in a manner that reduces fuel consumption. For example, a significant portion of this chapter discusses the state of readiness, cost, and impact of reducing vehicle mass. Reducing mass reduces the energy necessary to move a vehicle, and thus reduces fuel consumption.

The complexity of substituting advanced, lightweight materials affects the redesign of a part or a subsystem, component manufacturing (including tooling and production costs), and joining, and raises interface issues that mixing different materials can pose. The term material substitution oversimplifies the complexity of introducing advanced materials, because seldom does one part change without changing others around it.

Advanced lightweight materials show great promise for reducing mass throughout a vehicle’s body structure and interior. Low-rolling-resistance tires and reduction of aerodynamic drag are also discussed as technologies that can lower tractive force and result in reduced fuel consumption.

Improvements in energy-drawing devices such as air conditioner compressors and power steering can reduce fuel consumption either by electrification or by improving their efficiency. New transmissions with more gears or that are continuously variable improve power train efficiency. All these options either reduce the demand for power from the engine or enable operating the engine at a more efficient point to reduce fuel consumption.

The committee considers car body design (aerodynamics and mass), vehicle interior materials (mass), tires, vehicle accessories (power steering and heating, ventilation, and air conditioning [HVAC] systems), and transmissions as areas of significant opportunity for achieving near-term, cost-effective reductions in fuel consumption.