Internal combustion engine
OwnerThomas Betz, Frank Duvinage +2inventors
InventorsThomas Betz, Frank Duvinage, Rüdiger Pfaff, Heiko Sass
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Abstract
In an internal combustion engine having a plurality of cylinders, some of which can be deactivated during operation of the engine, the cylinders which can be deactivated during operation are configured specifically for high load engine operation and have a lower compression ratio ε than the rest of the cylinders, which are configured specifically for low load engine operation.
Claims7
An internal combustion engine having a plurality of cylinders (2a, 2b. 2c, 2d, 3a, 3b, 3c, 3d) with some of said cylinders (3a, 3b, 3c, 3d) being deactivatable during low load operation of said engine, said deactivatable cylinders (3a, 3b, 3c, 3d) being configured specifically for high load engine operation and having a lower compression ratio (ε) than the rest of the cylinders (2a, 2b, 2c, 2d), which are configured specifically for low load engine operation, a first turbocharger (12) connected to the cylinders (2a–2d) configured for low load engine operation for supplying charge air to the cylinders configured for low load engine operation and a second turbo-charger (13) connected to the cylinders (3a–3d) configured for high load engine operation for supplying charge air to the cylinders configured for high load engine operation, said second turbocharger (13) having a higher air throughput rate than said first turbocharger (12) for supplying more air to the cylinders which are configured for high load operation and have the lower compression ratio.
Dependencies are inferred from the claim text.