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GM Precept este rezultatul implicarii celor de la GM in Partenerialul pentru Noua Generatie de Vehicule (PNGV) , un efort unificat dintre guvernul Statelor Unite si industria auto particulara inceput in 1993. Este un sedan in versiune completa de cinci pasageri care este dezvoltat in doua modele pentru a explora potentialul vehiculelor cu combustibil alternativ .
Primul sistem utilizeaza tehnologie hibrida care este un mic mic motor pe ardere prin injectie-directa transmitand putere rotilor din spate combinat cu motoare electrice care transmit putere rotilor din fata. Aceasta este o solutie de termen apropiat redus care va ajuta masina sa obtina un consum de 80 MPG si totusi cu performante comparabile cu automobilele din zilele noastre .
Al doilea sistem este cel interesant pentru termen lung . Foloseste tehnologia fuel-cell care va permite celui mai mare sedan sa obtina 100 mpg dintr-o masina care va atinge 0 - 60 Mp/H in sub 10 secunde , avand o raza de 500 mile si fiind capabila de viteze de peste 120 Mp/h
Tehnologia fuel cell consuma carburant , in acest caz hidrogen , si-l trimite printr-o membrana care converteste energia din carburant direct in electricitate care este folosita sa dea putere motoarelor electrice pentru propulsie. Produsul rezultat acestui proces este apa , rezultand o masina cu poluare zero.
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The GM Precept is a result of GM's involvement in the Partnership for a New Generation of Vehicles (PNGV), a joint effort between the US Government and the domestic auto industry that began in 1993. It is a five passenger, full size family sedan that is being developed in two versions to explore the potential for alternative fuel vehicles.
The first system uses hybrid technology which is a small direct-injection internal combustion engine driving the rear wheels combined with electric motors that drive the front wheels. This is an interim or near term solution that will allow the car to achieve 80 mpg while providing performance comparable to today's full size cars.
The second system is the interesting one for the long term. It uses fuel cell technology that will allow this large sedan to achieve over 100 mpg in a car that will go from 0 to 60 in under 10 seconds, have a 500 mile range and be capable of speeds over 120 mph.
Fuel cell technology takes fuel, in this case hydrogen, and passes it through a membrane that converts the energy in the fuel directly into electricity that is used to power electric motors for propulsion. The byproduct of this process is water making this a zero emissions vehicle.
Sursa
http://www.familycar.com/Future/gm_precept.htm
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