CYLINDER HEAD FOR ONE INTERNAL COMBUSTION ENGINE

Abstract

A cylinder head for an internal combustion engine is provided, whereby the cylinder head has a cylinder head gasket region for closing a combustion chamber with a diameter. The cylinder head includes the following: a. two intake holes for receiving one intake valve each; b. two outlet holes for receiving one outlet valve each; and c. a spark plug sleeve hole for receiving a spark plug sleeve.

The at least one intake hole of the two intake holes has a diameter between 34.0% and 36.6% of the diameter of the combustion chamber, preferably a diameter between 34.5% and 35.9% of the diameter of the combustion chamber, and particularly preferably a diameter between 34.8% and 35.5% of the diameter of the combustion chamber. The at least one outlet hole has a diameter that, in relation to the diameter of the combustion chamber, is at least 1% smaller than the diameter of the intake holes.

Claims

1. A cylinder head for an internal combustion engine, the cylinder head comprising: a cylinder head gasket region for closing a combustion chamber having a diameter; two intake holes for receiving one intake valve each; two outlet holes for receiving one outlet valve each; and spark plug sleeve hole for receiving a spark plug sleeve; wherein at least one intake hole of the two intake holes has a diameter between 34.0% and 36.6% of the diameter of the combustion chamber, and the at least one outlet hole has a diameter that, in relation to the diameter of the combustion chamber, is at least 1% smaller than the diameter of the intake holes.

2. The cylinder head according to claim 1, wherein the diameter is 145 mm, and at least one of the two intake holes has a diameter of 49.5 mm to 53 mm.

3. The cylinder head according to claim 1, wherein at least one outlet hole of the two outlet holes has a diameter smaller than the diameter of the two intake holes, and a diameter 48 mm to 50 mm.

4. The cylinder head according to claim 1, wherein the two outlet holes each have a diameter smaller than the diameter of the two intake holes, and a diameter of 48 mm to 50 mm.

5. The cylinder head according to claim 1, wherein the spark plug sleeve hole has a diameter smaller than 28 mm, and has a diameter greater than 23.5 mm.

6. The cylinder head according to claim 1, wherein the spark plug sleeve hole is arranged substantially in the center of the cylinder head.

7. The cylinder head according to claim 1, wherein the cylinder head has at least one cavity for receiving and/or conducting a cooling medium.

8. The cylinder head according to claim 1, wherein the spark plug sleeve hole for securing the position of the spark plug sleeve has a thread at least in one section.

9. The cylinder head according to claim 1, wherein the spark plug sleeve hole for securing the position of the spark plug sleeve has a cylindrical fit at least in one section.

10. The cylinder head according to claim 1, wherein a center axis of the spark plug sleeve hole is arranged at a distance from a center axis of the cylinder head.

11. The cylinder head according to claim 1, wherein a center axis of the spark plug sleeve hole is arranged parallel to a center axis of the cylinder head.

12. An internal combustion engine having at least one cylinder head according to claim 1.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Various embodiments of the disclosure are shown in the figures. The figures show the following:

[0022] FIG. 1 a spark plug sleeve in the installed state;

[0023] FIG. 2 a first embodiment of a cylinder head according to the disclosure in a simplified cross-section;

[0024] FIG. 3 a second embodiment of a cylinder head according to the disclosure in a simplified cross-section; and

[0025] FIG. 4 a third embodiment of a cylinder head according to the disclosure in a simplified cross-section.

DETAILED DESCRIPTION

[0026] FIG. 1 shows a spark plug sleeve 14 in an installed state in a cylinder head 1. The spark plug sleeve 14 is fixed in the cylinder head 1 by a press fit in the spark plug sleeve hole 6. This spark plug sleeve hole 6 has a diameter 9. In the upper section of the spark plug sleeve hole 6, a thread 12 is provided that serves to secure the spark plug sleeve 14 in its position in the cylinder head 1. The connection between the cylinder head 1 and the spark plug sleeve 14 is established by a screw connection that is fixed in the thread 12 of the cylinder head 1.

[0027] In this embodiment, the center axis of the spark plug sleeve hole 6 is not only parallel to the center axis 11 of the cylinder head 1, but also has no spacing to it. (The center axis 11 of the spark plug sleeve hole 6 coincides with the center axis 10 of the cylinder head 1.)

[0028] In the exemplary embodiment of FIG. 1, a cavity 13 is provided for receiving a cooling medium or for conducting a cooling medium. In the operating state of the cylinder head 1, a cooling medium can flow around the spark plug sleeve 14 and thus cool it. A leakage of the cooling medium accommodated by the cavity 13 is prevented toward the bottom by the press fit 16 between the cylinder head 1 and the spark plug sleeve 14. Toward the top, this seal is created by the two gaskets 15 shown (designed as O-rings).

[0029] To accommodate the spark plug, the receptacle 17 is provided in the spark plug sleeve 14 (a thread).

[0030] FIG. 2 shows a first embodiment of a cylinder head 1 according to the disclosure in a simplified cross-section. Here the cylinder head 1 has a cylinder head gasket region 2 with a diameter 3 of 145 mm. This cylinder head gasket region 2 forms, with its diameter 3, the delimitation of the combustion chamber, as a result of which the intake valves, outlet valves and the spark plug must be arranged within this cylinder head gasket region 2.

[0031] Two intake holes 4 are provided that have a diameter 7. This diameter 7 of the intake holes 4 is designed in this embodiment as 51 mm equally for both intake holes 4 shown. Two outlet holes 5 also with an identical diameter 8 of 45 mm are also provided.

[0032] The spark plug sleeve hole 6 is arranged with its center axis 11 along the center axis 10 of the cylinder head 1 and with a diameter 9 of 24 mm. It can be seen from this exemplary embodiment how, despite the enlarged diameter 7 of the intake holes 4, despite the enlarged diameters 8 of the outlet holes 5 and despite the spark plug sleeve hole 6, sufficient material remains between the holes such that the cylinder head 1 has sufficient stability for operation.

[0033] FIG. 3 shows a second embodiment of a cylinder head 1 according to the disclosure in a simplified cross-section. In this embodiment, in contrast to FIG. 2, the center axis 11 of the spark plug sleeve hole 6 is arranged at a distance from the center axis 10 of the cylinder head 1. The diameter 9 of the spark plug sleeve hole 6 is also designed in this embodiment with a diameter of 24 mm. Due to this distance of the center axis 11 of the spark plug sleeve hole 6 from the center axis 10 of the cylinder head 1, the diameters 7 of the intake holes 4 can now be further increased (as shown here, to a size of 53 mm). In addition, the diameter 8 of the outlet holes 5 can be further increased (implemented here with a dimension of 50 mm). Nevertheless, in this embodiment, sufficient material between the holes (bars) is still provided to provide the cylinder head 1 with sufficient stability in operation.

[0034] FIG. 4 shows a third embodiment of a cylinder head 1 according to the disclosure in a simplified cross-section. Similarly to FIG. 2, the center axis 10 of the cylinder head 1 once again coincides with the center axis 11 of the spark plug sleeve hole 6. In contrast to FIG. 2, however, the diameter 9 of the spark plug sleeve hole 6 is larger. (More precisely, the diameter 9 of the spark plug sleeve hole 6 has a size of 26 mm.) The diameters 8 of the outlet holes 5 are here designed with a size of 49 mm, and the diameters 7 of the intake holes 4 are designed with a dimension of 49.5 mm. The remaining features correspond to those of FIG. 2.