Oil separator for internal combustion engine

Patent · Tue Aug 26 04:00:00 EDT 1986

OSTI ID:5231559

Kanoh, J; Aoki, K

This patent describes an internal combustion engine including a crankcase ventilation system, an oil separator casing formed integrally with the cylinder-head over, a partition defining the lower end of the oil separator, a baffle member for intercepting oil drops contained in blow-by gas flowing into the oil separator from the upper chamber of the cylinder, and an outlet port formed in the wall of the oil separator casing to exhaust gas from the oil separator. The improvement described here consists of: the baffle member being arranged at the open lower end of the oil separator, a filter member made of foam metal and arranged so as to divide the inside of the oil separator into a gas-liquid separating chamber in the upperstream side where the baffle member is arranged and a downstream side chamber where the partition is arranged, the filter member functioning so as to absorb oil constituents contained in blow-by gas passing through the baffle member, a relief valve being arranged in the partition so as to be opened when the internal pressure of the upper chamber of the cylinder increases to a predetermined degree, to introduce the blow-by gas into the downstream-side chamber directly from the upper chamber of the cylinder.

• Assignee: Aisin Seiki Kabushiki Kaisha, Kiraya
• Patent Number(s): US 4607604
• OSTI ID: 5231559
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330102* -- Internal Combustion Engines-- Diesel
BAFFLES
CONTROL EQUIPMENT
CYLINDERS
DROPLETS
ELEMENTS
ENGINES
EQUIPMENT
FILTERS
FILTRATION
FLOW REGULATORS
FLUID FLOW
GAS FLOW
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
LUBRICANTS
LUBRICATING OILS
METALS
OILS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PARTICLES
PETROLEUM PRODUCTS
PRESSURE EFFECTS
RELIEF VALVES
SEPARATION EQUIPMENT
SEPARATION PROCESSES
VALVES
VENTILATION SYSTEMS