US 11,808,185 B2
Engine with cylinder crankcase and oil return collection channel and oil drain
Marco Sliwa, Siegburg (DE)
Assigned to Deutz Aktiengesellschaft, Cologne (DE)
Appl. No. 17/802,988
Filed by DEUTZ Aktiengesellschaft, Cologne (DE)
PCT Filed Feb. 25, 2021, PCT No. PCT/EP2021/000021
§ 371(c)(1), (2) Date Aug. 29, 2022,
PCT Pub. No. WO2021/175485, PCT Pub. Date Sep. 10, 2021.
Claims priority of application No. 102020001339.2 (DE), filed on Mar. 2, 2020.
Prior Publication US 2023/0115612 A1, Apr. 13, 2023
Int. Cl. F01M 11/02 (2006.01); F02B 75/18 (2006.01); F01M 13/04 (2006.01); F01M 11/00 (2006.01)
CPC F01M 11/02 (2013.01) [F01M 13/04 (2013.01); F02B 75/18 (2013.01); F01M 11/0004 (2013.01)] 4 Claims
OG exemplary drawing
 
1. 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, the two vertically situated oil drains configured for discharging depressurized oil in a direction of an oil pan, following gravity,
wherein the at least one oil return collection groove merges the depressurized oil from the individual cylinder areas of the cylinder head, collects the oil and conducts the oil onward to the oil drains in the area of the first cylinders and the last cylinders.