BLOWBY GAS TREATMENT DEVICE, INTAKE MANIFOLD AND INTERNAL COMBUSTION ENGINE

摘要

A blowby gas treatment device is configured to discharge blowby gas inside an internal combustion engine to an intake passage inside an intake manifold. The blowby gas treatment device includes a blowby gas passage, a flow control valve, a communication hole, and a lid. The blowby gas passage includes an engine gas passage and an intake manifold gas passage. The communication hole is provided in the intake manifold. The communication hole is configured to connect outside of the intake manifold and a part of the intake manifold gas passage on a downstream side of the flow control valve in a gas flow direction. The communication hole opens the intake manifold gas passage to the atmosphere. A lid is configured to open and close the communication hole.

主权项

1. A blowby gas treatment device comprising:
an internal combustion engine including an engine gas passage,
the engine gas passage being integral with the internal combustion engine; an intake manifold including an intake passage, an intake manifold gas passage, and a communication hole,
the intake manifold gas passage being integral with the intake manifold; a blowby gas passage being configured to connect an inside of the internal combustion engine to the intake passage, the blowby gas passage being configured such that blowby gas passes through the blowby gas passage;
a flow control valve provided in the blowby gas passage, the flow control valve being configured to adjust an amount of the blowby gas; and a lid configured to open and close the communication hole,the communication hole being configured to connect an outside of the intake manifold to a part of the intake manifold gas passage, the part being located on a downstream side of the flow control valve in a gas flow direction, and the communication hole opening the intake manifold gas passage to an atmosphere.