Abstract:
Die vorliegende Erfindung betrifft eine Anordnung (10, 100, 200) umfassend eine Zylinderlaufbuchse (12) oder eine in ein Kurbelgehäuse (11) eingebrachte Zylinderbohrung eines Verbrennungsmotors, einen in der Zylinderlaufbuchse (12) bzw. der Zylinderbohrung aufgenommenen Kolben (13) mit einem umlaufenden Feuersteg (16) sowie einen in der Zylinderlaufbuchse (12) bzw. Zylinderbohrung aufgenommenen, sich axial parallel zum Feuersteg (16) erstreckenden ringförmigen Einsatz (20). Erfindungsgemäß ist vorgesehen, dass die Zylinderlaufbuchse (12) bzw. die Zylinderbohrung an ihrem oberen freien Ende (12a) eine radial nach innen gerichtete umlaufende Schulter (12b) aufweist, dass der ringförmige Einsatz (20) entlang seinem oberen umlaufenden freien Rand (22) um seinen Umfang verteilt mindestens zwei einander gegenüberliegende Sicken oder Anprägungen (23) aufweist, die auf der umlaufenden Schulter (12b) aufliegen.
Abstract:
A cylinder liner (32) is disclosed for use with an engine (10). The cylinder liner may have a generally cylindrical body (36) having a top end and a bottom end, and a flange (40) connected to the generally cylindrical body at the top end. The flange may have an external end face (46), an outer annular surface, and an axial thickness. The cylinder liner may also have a gasket recess formed in the external end face of the flange and having a radial width, and a groove (64) formed in the outer annular surface of the flange at an axial location about midway through the axial thickness of the flange. The groove may have a depth that is about one-third or less of the radial width of the gasket recess.
Abstract:
A cylinder liner and piston configuration for an internal combustion engine includes features for improving the cooling of the piston. Specific ratios and dimensions are included to optimize the features of the cylinder liner and piston. Also included are unique piston features that assist in achieving some of the specified dimensions and ratios.
Abstract:
A cylinder liner(80)for an internal combustion engine (30) of the opposed piston type, the cylinder liner (80) comprising a central bore(84)forming the cylinder and being adapted to receive, in use, a pair of pistons, the cylinder liner (80) comprising at least one air intake port (90) and at least one exhaust port (94) located on opposite sides of a substantially central combustion chamber of the liner (80) and a sparking/heat plug receiving port (110) and an injector receiving port (112) in communication with the combustion chamber, wherein the sparking/heat plug receiving port (110) and the injector receiving port (112) are arranged less than 180 degrees apart when viewed along a longitudinal axis of the cylinder (80), and wherein the cylinder liner (80)comprises a plurality of radial inlet ports (90) whose axes (92) are arranged tangentially to a longitudinal axis of the cylinder (80).
Abstract:
A cylinder unit is proposed with a cylinder head / cylinder liner interface that may provide for a tight sealing between a cylinder liner (20) and a cylinder head (10), an alignment of the cylinder liner (20) and the cylinder head (10) via a pair of liner and head centering faces (80A, 80B), and a coolant circulation space sealed via O-rings. Specifically, the interface may comprise a step-like structure in a cylinder liner end face as well as a step-like counter-structure in the corresponding face of the cylinder head (10). In addition, the steplike counter-structure of the cylinder head (10) may provide protection for a nozzle (12) mounted at the cylinder head (10) in the demounted state.
Abstract:
An improved cooling fluid passage configuration provides for uniformity of cooling about the entire periphery of a cylinder liner of an internal combustion engine in addition to improved cooling by increasing the flow in an upper water jacket of a split water jacket design. The cooling fluid passage configuration also provides a reduced pressure drop between a cylinder liner cooling fluid inlet and a cylinder head cooling fluid outlet when compared to conventional designs with a single head feed line, permitting use of a smaller cooling fluid pump and leading to increased efficiency of the engine.
Abstract:
An engine block arrangement in a reciprocating piston internal combustion engine, the arrangement comprising an engine block (1), a cylinder liner (2) being arranged inside the engine block (1), a lubricating oil chamber (6) being arranged between the cylinder liner (2) and the engine block (1), and means (3, 4) for introducing lubricating oil into the lubricating oil chamber (6). The invention also concerns a method for preventing fretting.
Abstract:
A cylinder liner for an internal combustion engine and a method of making the same are disclosed. The cylinder liner may generally include a cylindrical body configured to receive a piston assembly. The cylindrical body may further include a main body portion configured for selective engagement with an engine bore, and an upper flange configured to support the cylindrical body within the engine bore. The cylindrical body may also define an undulating cooling gallery adjacent the upper flange. The undulating cooling gallery generally defines a single coolant flow path extending about a perimeter of the cylindrical body.