Oil separation device and array for internal combustion engine

An engine system comprising:

• an array of oil separating apparatuses, wherein the array of the oil separating apparatuses includes an assembly of at least a first oil separating apparatus and a second oil separating apparatus that are physically coupled together, wherein the first oil separating apparatus includes a first jacket and the second oil separating apparatus includes a second jacket, wherein the first jacket is in fluid communication with the second jacket via a first jumper tube, wherein, via a first inlet port, the first jacket receives a fluid flowing in a generally tangential direction relative to the first jacket and circulates the fluid from the first inlet port around the first jacket to a first outlet port communicating with the first jumper tube, and wherein the first outlet port and the first jumper tube are positioned to extend generally tangentially relative to the first jacket;
• a first one or more fluid lines passing a blow-by gas from an engine to the array of the oil separating apparatuses, wherein oil is separated from the blow-by gas by passing through a first filter of the first oil separating apparatus and a second filter of the second oil separating apparatus, wherein the first jacket surrounds, thermally protects and is sealed as to be entirely separated from the first filter and the second jacket surrounds, thermally protects and is sealed so as to be entirely separated from the second filter;
• and
• a second one or more fluid lines passing the blow-by gas from the array of the oil separating apparatuses back to the engine.