Assembly for use in a crankcase ventilation system, a crankcase ventilation system comprising such an assembly, and a method for installing such an assembly
AssigneeVialle Alternative Fuel Systems B.V.
InventorServatius Alfons Maria Jaasma
Life of this patent
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Abstract
An assembly for use in a crankcase ventilation system of an internal combustion engine includes a shutter arrangement that is constructed and arranged for preventing that residual gases and/or vapors out of a crankcase flow into an air intake system during a period of time that starts at shut down of the engine and ends after it has been re-started. The assembly also includes an outlet that is constructed and arranged for removing at least a substantial part of the residual gases and/or vapors from the engine as long as it is shut down.
Claims17
An assembly for use in a crankcase ventilation system of an internal combustion engine with at least one cylinder having a piston and a combustion chamber, the assembly comprising:
- a shutter arrangement that is constructed and arranged for preventing residual gases and/or vapors out of a crankcase flow into an air intake system for the cylinder during a period of time that starts at shut down of the engine and ends after it has been re-started, and an outlet that is constructed and arranged for removing at least a part of the residual gases and/or vapors from the engine as long as it is shut down,
- wherein the shutter arrangement comprises a first shutter element that is positioned in a purge duct of the crankcase ventilation system, wherein the first shutter element is constructed and arranged for preventing residual gases and/or vapors out of a crankcase flow into an air intake system as long as the engine is shut down, and
- wherein the first shutter element is positioned upstream of a control valve of the crankcase ventilation system.
A crankcase ventilation system for use in an internal combustion engine with at least one cylinder having a piston and a combustion chamber, wherein the crankcase ventilation system comprises:
- a shutter arrangement that is constructed and arranged for preventing residual gases and/or vapors out of a crankcase flow into an air intake system for the cylinder during a period of time that starts at shut down of the engine and ends after it has been re-started, and an outlet that is constructed and arranged for removing at least a part of the residual gases and/or vapors from the engine as long as it is shut down,
- wherein the shutter arrangement comprises a first shutter element that is positioned in a purge duct of the crankcase ventilation system, wherein the first shutter element is constructed and arranged for preventing residual gases and/or vapors out of a crankcase flow into an air intake system as long as the engine is shut down,
- wherein the first shutter element is positioned in a first part of the purge duct, wherein the first part is arranged between a valve cover provided over an upper part of the cylinder, and a control valve of the crankcase ventilation system.
A method for providing an assembly in a crankcase ventilation system of an internal combustion engine with at least one cylinder having a piston and a combustion chamber, wherein the method comprises:
- arranging at least one of:
- a first shutter element in a purge duct of the crankcase ventilation system, wherein the first shutter element is positioned between a valve cover provided over an upper part of the cylinder, and a control valve of the crankcase ventilation system and
- a second shutter element in the purge duct, wherein the second shutter element is positioned between the control valve and an air intake duct for the cylinder;
- and
- arranging an outlet in the purge duct, wherein the outlet is configured for removing at least a part of residual gases and/or vapors out of a crankcase from the engine as long as it is shut down.
Dependencies are inferred from the claim text.