Advanced Automotive Technology: Visions of a Super-Efficient Family Car
generally higher costs. A comparison of some of these properties for various alternative automotive materials is provided in tab ...
Safety Materials (and the designs in which they are used) play a critical role in automobile crashworthiness. The general concep ...
while the composites collapse by a combination of fracture processes. Whereas metals are isotropic^19 and comparatively easy to ...
from vehicle scrappage, though the increase is likely to be gradual unless use of composites in vehicle structure becomes widesp ...
2005-Advanced Conventional This vehicle contains an optimized steel body. A recent study by Porsche Engineering Services estimat ...
that would significantly reduce the raw materials cost. Reliable estimates of the increased cost of the vehicle above are diffic ...
201 5-Optimistic This scenario involves a vehicle constructed with polymer composites, as is concept car. Such a vehicle might c ...
Conclusions The most striking feature of the history of materials use in the automobile is how slowly it has evolved, despite si ...
economy increase owing to mass reduction would be only about 33 percent. To achieve 300 percent improvements or more, as envisio ...
and air intake ducts in the rear quarter panels to keep the airflow “attached” to the body for minimum drag. Liquids are piped t ...
cars, hence unacceptable to consumers as trucks. GM’s highly aerodynamic Lumina Van has not been popular with customers, partly ...
ROLLING RESISTANCE REDUCTION Background The rolling resistance of a tire is the force required to move the tire forward, and rep ...
use can cut rolling resistance by 5 percent.^40 Polyamide monofilament have been recently introduced that improve the tire sidew ...
Only two auto manufacturers discussed other components of rolling resistance, including brake drag and wheel/drivetrain oil seal ...
IMPROVEMENTS TO SPARK IGNITION ENGINES Overview The spark ignition (SI) engine is the dominant passenger car and light truck pow ...
Increasing Thermodynamic Efficiency Increasing the thermodynamic efficiency of SI engines can be attained by optimum control of ...
(DOHC) type, the spark plug is placed at the center of the combustion chamber, and the chamber can be made very compact by havin ...
Lighter pistons Reducing piston mass is the key to reducing piston fiction, and engine designers have continuously reduced mass ...
Reducing Pumping Loss Reductions in flow pressure loss can be achieved by reducing the pressure drop that occurs in the flow of ...
results in pumping losses. These losses are proportional to the intake vacuum, and disappear at wide open throttle. Lean-burn Le ...
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