Crankcase oil separator for internal combustion engine

A method of separating oil from a blow-by gas of an engine, the method comprising:

• providing an inner housing within an outer housing, wherein the inner housing forms an inner cavity that receives a filter, and wherein the outer housing is separated from the inner housing by a jacket
• heating or cooling the inner housing and the filter from the jacket;
• passing the blow-by gas through at least a first inlet of a first cover to a first manifold adjacent a first end portion of the outer housing;
• passing the blow-by gas from the first manifold to the filter within the outer housing;
• separating the oil from the blow-by gas with the filter;
• passing the blow-by gas from the filter to a second manifold of a second cover and out at least a first outlet of the second cover, wherein the second manifold is adjacent a second end portion of the outer housing;
• and
• passing the oil separated by the filter through a passageway formed in one of the first cover or the second cover to a drainage port formed by the one of the first cover or the second cover.

An engine system comprising:

• an engine;
• and an oil separating apparatus, comprising:
• an outer housing;
• an inner housing positioned within the outer housing, wherein the inner housing defines an inner cavity, and wherein the inner housing and outer housing form a jacket therebetween;
• and a filter positioned within the inner cavity and configured to separate the oil from a blow-by gas;
• a first one or more fluid lines passing the blow-by gas from the engine to the oil separating apparatus;
• a second one or more fluid lines passing the blow-by gas from the oil separating apparatus back to the engine;
• and a third one or more fluid lines in fluid communication with the jacket and configured to pass one or more of pressurized engine boost air, engine coolant, or engine lube oil.

An engine system comprising:

• an engine;
• and
• an oil separating apparatus, comprising:
• an outer housing;
• an inner housing positioned within the outer housing, wherein the inner housing defines an inner cavity, and wherein the inner housing and outer housing form a jacket therebetween;
• and
• a filter positioned within the inner cavity and configured to separate the oil from a blow-by gas;
• a first one or more fluid lines passing the blow-by gas from the engine to the oil separating apparatus;
• a second one or more fluid lines passing the blow-by gas from the oil separating apparatus back to the engine;
• and
• one of:
• insulating material located within the jacket, an electrical heater having one or more coils located within the jacket or the jacket is configured as a sealed air gap.