ENGINE WITH CYLINDER CRANKCASE AND OIL RETURN COLLECTION CHANNEL AND OIL DRAIN

Abstract

An internal combustion engine, in particular, a diesel internal combustion engine, including a cylinder crankcase (1), at least one oil return collection groove (2), at least one oil drain (3), in which depressurized oil (4) discharges in the direction of the oil pan, following gravity, and at least one cylinder (5) is provided.

Claims

1-5. (canceled)

6. An internal combustion engine comprising a cylinder crankcase; a cylinder head; multiple cylinders including a first cylinder and a last cylinder; at least one oil return collection groove essentially situated in an area of a separation lane of the cylinder crankcase and the cylinder head and extending from the first cylinder to the last cylinder; and two vertically situated oil drains each in an area of a respective one of the first and last cylinders, two vertically situated oil drains configured for discharging depressurized oil in a direction of an oil pan, following gravity, the at least one oil return collection groove being configured in such a way that depressurized oil from the individual cylinder areas of the cylinder head is merged, collected and conducted onward to oil drains in the area of the first and last cylinders.

7. The internal combustion engine as recited in claim 6, wherein the oil return collection groove is essentially horizontally situated.

8. The internal combustion engine as recited in claim 6, wherein the oil return collection groove is recessed into a top planar surface of the cylinder crankcase and extends continuously along the top planar surface such that a first end of the oil return collection groove is longitudinally past the first cylinder and a second end of the oil return collection groove is longitudinally past the last cylinder.

9. The internal combustion engine as recited in claim 6, wherein the oil return collection groove is recessed into a top planar surface of the cylinder crankcase and extends continuously along the top planar surface such that a first end of the oil return collection groove protrudes laterally away from the first cylinder and a second end of the oil return collection groove is protrudes laterally away from the last cylinder.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0011] FIG. 1 shows an internal combustion engine according to the present disclosure with a view onto the crankcase open at the top.

DETAILED DESCRIPTION

[0012] The present design shows many functions in a small installation space, which does not weaken the structure of the cylinder head at the same time. In the approach shown in FIG. 1, depressurized oil 4 is transferred from the cylinder head of each cylinder 5 to cylinder crankcase 1 in such a way that it is transferred in the one oil return collection groove 2 situated horizontally in the area of the separation plane between the head and the block. In this way, the construction of a clean structure in the cylinder, without limitations, is possible. An oil return collection groove 2 is cast or machined into cylinder crankcase 1. Oil return collection groove 2 merges the depressurized oil from the individual cylinder areas of the cylinder head, collects it and conducts it onward to cast-on or machined-on oil drains 3, which are vertically situated in the area of the first and last cylinders, in the direction of the oil pan. In this way, space is created beneath the oil return collection groove 2 for water channels and for further modules to be provided, such as, for example, cooling cassettes or the like.

LIST OF REFERENCE NUMERALS

[0013] 1 cylinder crankcase [0014] 2 oil return collection groove [0015] 3 oil drain [0016] 4 depressurized oil [0017] 5 cylinder