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EA888 发动机.pdf

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EA888 发动机.pdf
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- 1 - Dr.-Ing. Th. Heiduk, Dipl.-Ing. R. Dornhöfer, Dipl.-Ing. A. Eiser, Dr.-Ing. M. Grigo, Dipl.-Ing. A. Pelzer, Dr.-Ing. R. Wurms, AUDI AG, Ingolstadt The new generation of the R4 TFSI engine from Audi Abstract The new 1.8l TFSI engine in the Audi B8 family (A4, A5) is the third generation of the four- cylinder inline TFSI technology to be launched onto the market by Audi. The engine has been completely revised in order to meet ambitious CO 2targets and ensure compliance with future EU6 emissions standards. The development also incorporated other strategic objectives, such as cross-market applicability and integration into the VW Group's worldwide manufacturing network, as ongoing key elements of the EA888 global engine family. The new generation features numerous innovative technologies, including a cooled exhaust manifold integrated into the cylinder head, a combined FSI/MPI fuel injection system with 200 bar high-pressure injection, and the Audi valvelift system [1, 2] on the exhaust side in combination with an exhaust camshaft adjuster. A particular highlight is the world's first deployment of an entirely newly developed rotary slide control system to implement intelligent thermo-management. Bringing together all the fundamental revisions to components with a view to optimising thermodynamics, friction and weight, the first embodiment of this new engine generation – the 1.8l TFSI – represents a new benchmark in its class in terms of fuel efficiency and performance. 32. Internationales Wiener Motorensymposium 2011- 2 - Figure 1: Overall view of the new EA888 R4 TFSI engine (longitudinal installation of the engine) 1. Introduction / development goals The history of Audi TFSI engines extends back to 2004, when the world's first direct- injection turbo engine, based on the tried and proven EA113 engine series, went into production (2.0l TFSI) [3, 4]. Development of the concept for the new EA888 engine series [5] with chain drive had actually begun back in 2003, wi
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