• Announcements

    • administrator


      Va rugam inainte de a posta cititi Regulamentul. Va rugam ca inainte de a deschide un topic nou sa cautati daca mai exista un alt topic deschis cu acelasi subiect sau subiect asemanator. Va rugam pentru a usura lectura unui topic sa nu mai citati un post anterior utilizati functia "fast reply". Va rugam inainte de a posta sa cititi cu atentie titlul topicului pentru a vedea daca va incadrati in acel titlu. Va rugam cititi REGULAMENTUL Noi membrii : Va rugam inainte de primul post sa cititi regulamentul cu atentie, dureaza 5 minute. Va rugam de asemenea sa cititi cu atentie si rubrica Anunturi Importante de la Discutii Generale.
    • administrator

      Va rugam cititi !!!

      Va rugam cititi regulamentul sectiunii de Publicitate inainte de a deschide un nou topic sau a posta. Moderatorii pot sterge fara nici un fel de avizare orice topic sau post care nu este conform regulamentului de publicitate.
Sign in to follow this  
Followers 0

Opel Astra Hibrid Diesel-electric

2 posts in this topic

Ceva destul de interesant, se pare ca pe viitor vom avea si o versiune diesel-electric, cu performante de invidiat, dar si un pret pe masura, cam 8000$ in plus.

An interesting development, though, is showcased in the Opel Astra diesel-electric hybrid concept. Currently planned only for sale in Europe, the Astra hybrid employs technology that GM's Allison Transmission division already uses in its hybrid buses. That system is also set to be the starting point of a joint venture between GM and DaimlerChrysler, another company left behind when hybrid rapture hit.

GM vice chairman Bob Lutz is a hybrid skeptic, but even he reluctantly admits that his company should have expended more effort early in the hybrid race. "The reason we missed the boat on hybrids is we business-cased it too much," Lutz told the Detroit Free Press, adding that GM should have treated hybrid development as a public relations expense rather than viewing it as a straight loss—something GM has been dealing with plenty, even without adding hybrids' extra cost into the balance sheet.

European Bestseller

Over 360,000 production Astras, with a variety of engines and trim levels, sold in Europe last year. On the outside, the Astra hybrid concept appears identical to the current front-wheel drive, five-passenger, three-door Astra GTC hatchback. It sports an unusual and striking panoramic roof, extending the windscreen in a smooth sweep over the cockpit. The Astra is built on the same platform as the Saturn Ion, so Saturn enthusiasts are watching closely, hoping for a possible replacement.

Inside, the hybrid features a center-dash color display screen where hands-free phone, route planning, and the current propulsion information reside. The tachometer from the production model is replaced in the hybrid by instruments that provide feedback on the hybrid propulsion system—whether traction is coming from the electric motors, the diesel engine, or both. Another gauge displays the level of battery charge from the nickel-metal-hydride battery pack, which is tucked into the spare tire well along with cooling fans.

Fuel Economy, Emissions, and Performance

GM's group vice president for powertrains, Tom Stephens, claims that the hybrid Astra gets better than 59 mpg, improving about 25% on comparable diesel models. It is equipped with a 125-horsepower, 1.7-liter, four-cylinder, 16-valve, dual overhead cam turbodiesel with maintenance-free particulate filters. A production Astra using the same CDTI diesel engine found in the hybrid goes from 0-100 km/h (0-62 mph) in 12.3 seconds; the hybrid is expected to reach 100 km/h in just under 8 seconds. That kind of acceleration puts the hybrid on par with the production-model Astra's top-of-the-line 2.0-liter, 200-horsepower ECOTEC gasoline engine.

GM's Two-mode Full Hybrid: How it Works

The hybrid's two electric motors, 30 kW and 40 kW, nestle into the space—and the package—of an automatic transmission. An electronic controller determines the car's propulsion mode, and the motors act on a series of gears to create an infinitely variable drive system. GM has named its two interlinked methods of hybrid propulsion the "input split" and "compound split" modes.

The input split mode is used to launch the vehicle from a stop, to drive at low speeds, and to boost performance and load-towing capability. In this mode, the system can operate with only the engine, only the motor, or any combination of the two. One motor acts as a generator, powering the batteries, while the other provides drive power to move the car. This mode effectively cuts emissions in city driving.

The compound split mode consists of both motors, managed by the control unit, selectively operating in drive or generation modes, depending on the vehicle speed. They also work in conjunction with other engine technologies, like GM's Displacement on Demand. The electric motors not only regulate power flow, they aid in extending Displacement on Demand beyond what is possible without hybrid assist. The purpose of the second mode is to optimize fuel consumption at higher speeds.

But Will It Sell?

The hybrid Astra's price is yet to be determined-check back closer to 2007, when it may go into actual production. Currently, diesel-electric hybrids are estimated to add $8,000 onto the price of a comparable gasoline-only passenger car. But with Europe on board the Kyoto greenhouse-gas reduction treaty and Europeans paying up to $5 a gallon for gas, there just might be a market for this car. At least among those with plenty of money, environmental consciousness, and style sense. How about it, Prince Charles?

sursa http://www.hybridcars.com/opel-astra-diesel-hybrid.html

Share this post

Link to post
Share on other sites
Vezi ce zic pe aici baietii astia, ca par ca stiu ce spun....

Share this post

Link to post

Am impresia ca acest hybrid a fost prezentat sub forma de concept la NAIAS Detroit 2005.

Share this post

Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
Sign in to follow this  
Followers 0