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To: Maverick who wrote (4724)8/17/2001 7:28:22 AM
From: q39  Read Replies (1) | Respond to of 4908
 
This link is even better:

theautochannel.com

It is about the Opel Signum2 concept car to debut in Frankfurt next month.

About the engine:

Debut of prototype V8 direct-injection gasoline engine from GM Powertrain

Power and Refinement: GM V8 Concept Engine with Direct Gasoline Injection

"Beneath the hood of the Signum2 concept car is the prototype of an all-new, lightweight V8 engine with gasoline direct injection, developed in the USA by General Motors Powertrain. Thanks to two camshafts integrated centrally into the engine block and a cylinder-bank angle of only 75 degrees, the so-called 'Global XV8' is so compact it can be installed transversely, as in the Signum2, or longitudinally, making it ideally suited for a future career as a global GM engine. With three valves per cylinder and 4.3-liters displacement, the refined, all-aluminum power unit generates 220 kW/300 hp and accelerates the front-wheel drive concept car to up to 250 km/h (electronically limited). Despite this high power output, it needs only 9.8 liters of super-grade fuel per 100 kilometers (MVEG). This is thanks to the air-assisted injection of fuel directly into the combustion chamber and deactivation of up to four cylinders under partly open throttle."

This is from RFritz on yahoo.



To: Maverick who wrote (4724)8/24/2001 1:59:51 PM
From: PIERRE HANDL  Read Replies (1) | Respond to of 4908
 
"Gasoline Direct Injection -- gasoline direct injection improves air/fuel combustion efficiency in the engine and reduces pumping loses. To maximize fuel economy benefits, injectors are mounted in the center of the combustion chamber. Gasoline is injected directly into the combustion chamber resulting in an anticipated fuel economy of up to 15 percent."

They now can change the fuel economy to "...up to 20%."