Perkins Engines Company Limited

Maciej Bedkowski

Richard Pateman

A system for limiting the ingress of oil into an induction feed pipe provided in the cylinder head cover of an internal combustion engine is disclosed. The system provides a cylinder head cover including a cylinder head cover outlet, a top plate spaced from the cylinder head cover outlet, and a perforated deflector plate. The top plate and deflector plate define a chamber in communication with the cylinder head cover outlet.

Deflector for limiting the ingress of liquid oil

In prior art engine breather systems, shut off valves that prevent oil from entering the engine induction system have been mounted externally on the engine and require associated external pipework. Both the shut off valve and pipework are prone to damage and leaking. The closed circuit breather apparatus of the present invention includes a cylinder head cover and a shut off valve provided beneath the cylinder head cover. The shut off valve includes an aperture in communication with a blow-by gas inlet passage and a valve float restrained to move between a first position in which the aperture is open and a second position in which the aperture is closed. Preferably the shut off valve is integral with the cylinder head cover. The shut off valve is thus packaged inside the engine valve chamber, making it easy to fit and eliminating leak paths.

Combined shut-off valve and cover for an engine breather system

A baffle for fitment over breather gas inlet of an internal combustion engine breather system to limit the ingress of oil droplets has a baffle plate at a first end, a second end connectable to a breather gas inlet, and a gas conduit extending between the ends, open at the second end and closed at the first end by the baffle plate, and having a perforated wall.

Breather baffle

An internal combustion engine breather system in which a lower engine volume is defined by an engine crankcase, an upper engine volume is defined by a top cover, and an upper forward part of the crankcase includes a housing defining a volume to accept a fuel injection pump. Breather gas inlet means are provided to receive breather gas from one or more locations within the volume defined by the fuel injector pump housing, a breather gas conduit fluidly connects the inlet to a separator capable of separating oil from suspension within the breather gas, and a breather balancing conduit fluidly connects the separator to the upper volume defined by the top cover.

Growing community of inventors

Peterborough, United Kingdom

Maciej Bedkowski