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AssigneeErwin Junker Grinding Technology A.S.
InventorErwin Junker
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A method for introducing combustion air into a cylinder (25) of an internal combustion engine, a high-pressure inlet valve (1) provided therefor and an internal combustion engine that operates using the method and the high-pressure inlet valve are described. All the combustion air for the respective cylinders (25) is introduced into the cylinder (25) of the internal combustion engine, by means of a high-pressure inlet valve (1) arranged in the relevant cylinder head (26) and on the basis of a controlled mass flow, such that mixture formation and charge exchange are intensified. In addition, the temperature and/or pressure of the combustion air is measured and the quantity of combustion air is introduced into the cylinder (25), in a controlled manner and on the basis of the measurement results, by means of the high-pressure inlet valve (1) by opening or closing a sliding piston (3) of the high-pressure inlet valve (1) by displacement. As a result of an axial displacement of the sliding piston (3) between guide sections (5) in the housing (2) of the high-pressure inlet valve (1), passage areas (6) for combustion air are blocked in a closed position (7) and opened in an open position (8). In the passage area (6), the sliding piston (3) has two pressurization areas (10, 11) facing each other, the surfaces of which are of equal size or differ from each other when projected in one plane. The first pressurization area (10) can be designed as a poppet valve (12) and the second pressurization area (11) can be designed as an annular surface (13). The internal combustion engine has a high-pressure line (27) for the combustion air, which line is connected to the high-pressure inlet valve (1). With respect to the longitudinal axis of the cylinder (25), the high-pressure inlet valve (1) is arranged in the cylinder head (26) in an upright or horizontal position.
A method for introducing combustion air into a cylinder of an internal combustion engine, in which method the entirety of the combustion air for the respective cylinder is, in a manner controlled at least with regard to its mass flow by means of a high-pressure inlet valve arranged in the cylinder head or in the region thereof, introduced into the cylinder of the internal combustion engine at high pressure such that the combustion air intensifies mixture formation and charge exchange in the cylinder, characterized
A high-pressure inlet valve (1) for introducing highly pre-compressed combustion air into a combustion chamber (25) of an internal combustion engine, which high-pressure inlet valve has a sliding piston (3) which is guided in a housing (2) and which has cylindrical piston sections (4), the axial lengths of which are adapted to axially extending guide sections (5), which are of congruent shape with respect to said cylindrical piston sections, in the housing (2) such that, during axial displacement of the sliding piston (3), passage regions (6), arranged between the guide sections (5) in the housing (2), for combustion air are shut off, and allow no combustion air into the combustion chamber (25), in a closed position (7) and, in the event of axial displacement into a passage position (8), allow combustion air through a combustion air inlet (9) through the passage region (6) into the combustion chamber (25), wherein the sliding piston (3), in the passage region (6), has two regions which face toward one another and which are formed as first (10) and second pressure-application regions (11), whose areas projected onto a plane are of equal size.
A high-pressure inlet valve (1) for introducing highly pre-compressed combustion air into a combustion chamber (25) of an internal combustion engine, which high-pressure inlet valve has a sliding piston (3) which is guided in a housing (2) and which has cylindrical piston sections (4), the axial lengths of which are adapted to axially extending guide sections (5), which are of congruent shape with respect to said cylindrical piston sections, in the housing (2) such that, during axial displacement of the sliding piston (3), passage regions (6), arranged between the guide sections (5), for combustion air are shut off, and allow no combustion air into the combustion chamber (25), in a closed position (7) and, in the event of axial displacement into a passage position (8), allow combustion air through a combustion air inlet (9) through the passage regions (6) into the combustion chamber (25), wherein the sliding piston (3), in its passage region (6), has two regions which face toward one another and which are formed as first (10) and second pressure-application regions (11), whose areas projected onto a plane are of different size.
A high-pressure inlet valve (1) for introducing highly pre-compressed combustion air into a combustion chamber (25) of an internal combustion engine, which high-pressure inlet valve has a sliding piston (3) which is guided in a housing (2) and which has a cylindrical piston section (4), the axial length of which is adapted to an axially extending guide section (5), which is of congruent shape with respect to said cylindrical piston section, in the housing (2) such that, during axial displacement of the sliding piston (3), the piston section (4) guided in the guide section (5) shuts off a passage region (6), arranged in the housing (2), for combustion air with respect to the passage of combustion air into the combustion chamber (25) in a closed position (7) and, in a passage position (8), opens up said passage region with respect to the passage of combustion air into the combustion chamber (25), wherein the sliding piston (3), in the passage region (6), has two regions which face toward one another and which are formed as first (10) and second pressure-application regions (11), whose areas, projected onto a plane, perpendicular to the longitudinal axis of the sliding piston (3) are of equal size or differ from one another slightly, and the first pressure-application region (10) is formed in the manner of a disk valve (12) and the second pressure-application region (11) is formed in the manner of an annular surface (13).
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