Engine system routing crankcase gases into exhaust

• Main Authors: OLSEN PAUL FREDERICK, SCHELL WILLIAM LYLE, GEHRKE CHRISTOPHER RONALD, KEYES JOSHUA DAVID
• Format: Patent
• Language: English
• Published: 19.03.2009
• Subjects: BLASTING; CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TOTRANSPORTATION; COMBUSTION ENGINES; COMBUSTION ENGINES IN GENERAL; CONTROLLING COMBUSTION ENGINES; CRANKCASE VENTILATING; ENGINE PLANTS IN GENERAL; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; HEATING; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS; INTERNAL-COMBUSTION PISTON ENGINES; LIGHTING; LUBRICATING INTERNAL COMBUSTION ENGINES; LUBRICATING OF MACHINES OR ENGINES IN GENERAL; MACHINES OR ENGINES IN GENERAL; MECHANICAL ENGINEERING; STEAM ENGINES; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; WEAPONS

An engine system is disclosed. The engine system has an engine block having at least one combustion chamber and at least partially defining a crankcase. The engine system also has an inlet conduit connecting a compressor of a turbocharger with the at least one combustion chamber. The engine system further has an exhaust conduit connecting a turbine of the turbocharger with the combustion chamber and a ventilation conduit connecting the crankcase with the exhaust conduit. The engine system also has a controller in communication with the turbocharger, the controller being configured to adjust the geometry of the turbocharger to maintain a pressure of the crankcase lower than a pressure of the inlet conduit.