Porsche ALMS race engine to go direct injection

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08-01-2008, 10:39 AM

RacerRick

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Porsche ALMS race engine to go direct injection

From track to road and back to track again. That is the path for gasoline direct fuel injection. In the late 90s Audi added direct injection to its R8 Le Mans prototype in order to get more power while consuming less fuel. In racing reducing fuel consumption is important because it allows cars to run farther between pit stops spending more time on the track. Direct injection eventually migrated into most of Audi's production engines along with those from parent company Volkswagen. After adding direct injection to the Cayenne GTS and 2009 911, Porsche is now migrating that same technology back to its own race program. The Porsche RS Spyders debuted a new direct injected version of the 3.4L V8 two weeks ago at Mid-Ohio and won the LMP2 class. The output of the DI engine went from 476 hp to 503 hp while fuel consumption dropped. Porsche is not saying how much it went down, but they are evidently still developing the system and optimizing it. For example the engines now run extremely lean under light loads greatly reducing consumption in a manner that would not be possible with a port fuel injection system. In coming years we will be seeing virtually all gas engines migrating to direct injection.

08-04-2008, 11:15 AM

ABC12M3

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I find it interesting that the auto industry is so far behind in DI tech. The marine outboard motor industry has been using DI for years now with great success. So this is great news!

Last edited by ABC12M3; 08-04-2008 at 11:20 AM.