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Porsche to Show Cayenne Hybrid Prototype at Frankfurt
9 September 2007
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| Hybrid components (red) in the Porsche Cayenne: power electronics, electric motor with clutch, clutch actuator, NiMH battery (from left). Click to enlarge. |
Porsche will demonstrate a Cayenne SUV hybrid this week at the Frankfurt Motor Show. The company announced it was working on the Cayenne hybrid earlier this year, and is targeting having the vehicle on sale by the end of the decade. (Earlier post.)
Porsche is initially targeting average fuel consumption of 9.8 l/100km in the New European Driving Cycle and about 24 mpg US in the US FTP cycle for the Cayenne Hybrid. The company says that future developments may allow them to push it closer to an average fuel consumption figure of 8.9 l/100km (approximately 26 mpg US).
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| Cayenne Hybrid drivetrain technology: power electronics with hybrid module and combustion engine. Click to enlarge. |
The Cayenne Hybrid will feature a full-hybrid parallel design in which the hybrid module (clutch and electric motor) is positioned between the combustion engine and the transmission rather than having a branched or split hybrid power concept.
Porsche said it selected this design because the in-line configuration of the hybrid components are more compatible with the existing Cayenne platform, and in testing in proved more fuel efficient.
The Cayenne hybrid combines Porsche’s 3.6-liter Direct Fuel Injection (DFI) gasoline engine featuring with an electric motor and 38 kW, 288V NiMH battery that is housed in the trough beneath the luggage compartment of the Cayenne normally accommodating the spare wheel.
The Hybrid Manager, which oversees some 20,000 data parameters as compared to only 6,000 data parameters for a conventional engine, coordinates the three main components: combustion engine, the electric motor and the battery.
Other features of the Cayenne Hybrid designed to decrease fuel consumption include the use of electrically powered system and ancillary units such as power steering and vacuum pump, oil pump, and air conditioning. The Cayenne Hybrid uses electro-hydraulic steering.
Porsche plans to introduce similar hybrid technology in a version of its Panamera four-door Gran Turismo. The Panamera will debut in 2009, with a hybrid to follow.
September 9, 2007 in Hybrids | Permalink | Comments (27) | TrackBack (0)
Comments
Posted by: Angelo | September 10, 2007 at 08:28 PM
...26mpg? A huge step for Porsche, a tiny step for autoindustry.
It´s a pity, that this SUV is out of production, since it achieved almost the same mpg-figures:
http://www.youtube.com/watch?v=KPqfC5SFZfI
Posted by: michel | September 12, 2007 at 07:10 AM
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"Why are manufacturers still trying to shove these un-necessary monsters down our throat?"
I really don't think anyone is shoving anything down anyone's throat here. This is a Porsche. This is not a mass market, run-of-the-mill Honda or Toyota. No one, including Porsche, is trying to sell this as but a niche vehicle that gets 50% better mileage. 95% of Americans cannot afford this vehicle. There were a little over 2200 Cayenne V6s sold in North America last year. People who buy Toyota Corollas aren't going to go out and trade them in for a Porsche hybrid anytime soon.
Every one of these that hits the road is one less 15mpg version that hits the road.