CPC F01M 13/04 (2013.01) [F01M 2013/0044 (2013.01); F01M 2013/0494 (2013.01)] | 11 Claims |
1. An oil return valve for a crankcase ventilation system of an internal combustion engine, the oil return valve being arranged in a crankcase of the internal combustion engine and comprising:
a first bore in the crankcase;
a second bore in the crankcase;
wherein the first bore and the second bore jointly form a stepped bore; and
a third bore in the crankcase;
wherein the third bore ends in the second bore;
wherein a longitudinal axis of the first bore and a longitudinal axis of the third bore are spaced from each other;
a valve cylinder which is inserted in the second bore and completes the oil return valve; and
a valve pipe arranged in the first bore such that an annular chamber is formed between the valve pipe and a bore wall of the first bore.
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