The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 10, 1985
Filed:
Nov. 13, 1984
Andreas Mayer, Niederrohrdorf, CH;
Rudolf Stussi, Los Angeles, CA (US);
BBC Brown, Boveri & Company, Limited, Baden, CH;
Abstract
In internal combustion engines (1), the sealing of the combustion chamber by pistons and piston rings is not absolute. Throughout the working cycle, gases from the cylinder enter the crankcase (1a). These blow-by gases must be able to escape from the crankcase (1a). In a device for returning the blow-by gases into the system of an internal combustion engine (1) supercharged with a gas-dynamic pressure-wave supercharger (10), it is envisaged that a gas delivery unit designed as an ejector (20) generates a reduced pressure in the crankcase (1a). The ejector (20) is operated with a propellant gas from a line (16) which is taken from the supercharger airline (13), a control (8) placed in the propellant gas line (16) ensuring that the reduced pressure in the crankcase (1a) never exceeds a defined value. The blow-by gases in the line (2) flow through an oil separator (4) and, mixed with the propellant gas in the line (16), are then returned into the exhaust line (15) of the engine system.