Cayenne Downsizing Gasoline-Electric Porsche 
Green Car Congress
MARCH 27, 2015
Porsche has presented the second generation of its Le Mans Prototype 919 Hybrid race car. The amount of liquid fuel that may be used in a lap decreases in proportion to the amount of electrical energy a driver is able to employ.). (The Porsche 919 Hybrid, 2015. Liters gasoline. Earlier post.) Click to enlarge.
Green Car Congress
SEPTEMBER 24, 2010
Electronic Fuel Vapor Management Valve for Hybrid-Electric Vehicles. The electronic fuel vapor management valve for hybrid-electric vehicles manages fuel vapor pressure contained within the fuel tank, increasing safety and enabling automakers to meet emissions regulations. The 2010 Porsche Cayenne S Hybrid SUV features an Audi 3.0L
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