Separation chamber type anti-surge valve and commercial vehicle turbocharger system applying the same
AssigneeHyundai Motor Company
InventorYoung-Soo JIN
Life of this patent
Estimating the term…
Abstract
A separation chamber type anti-surge valve may include a valve body formed with a charge air passage inlet and a charge air passage outlet, and a valve cover coupled to the valve body by a fastening member to define an empty inner space between the valve body and the valve cover, in which the inner space is divided into a diaphragm chamber and a bypass chamber by a valve guide, one side tip of a valve rod being fixed in the diaphragm chamber, a valve disc fixed to another side tip of the valve rod, and the diaphragm chamber is divided into a control pressure chamber and a normal static pressure chamber.
Claims16
A separation chamber type anti-surge valve comprising:
- a valve body formed with a charge air passage inlet through which charge air defined by compression of air is introduced and a charge air passage outlet through which the charge air is discharged, and a valve cover coupled to the valve body by a fastening member to define an empty inner space between the valve body and the valve cover, wherein:
- the inner space is divided into a diaphragm chamber and a bypass chamber by a valve guide located at the valve body, a diaphragm being located in the diaphragm chamber, one side tip of a valve rod being fixed in the diaphragm chamber so that the valve rod is operationally moved along with movement of the diaphragm chamber, a valve disc fixed to another side tip of the valve rod being located in the bypass chamber, and
- the diaphragm chamber is divided into a control pressure chamber in which a suction pressure defined as a negative pressure, equal to or less than atmospheric pressure, by the charge air is provided in a space above the diaphragm so that the diaphragm is pulled, and a normal static pressure chamber in which a static pressure greater than the negative pressure is provided between a space beneath the diaphragm and a space above the valve guide.
A commercial vehicle turbocharger system comprising:
- an anti-surge valve including a valve guide dividing an inner space defined by a valve body and a valve cover coupled to each other into a diaphragm chamber and a bypass chamber, a diaphragm assembly moved by a negative pressure in the diaphragm chamber, a valve assembly passing through the valve guide to be fixed to the diaphragm assembly such that the bypass chamber is opened by movement of the valve assembly along with movement of the diaphragm assembly, a charge air passage inlet communicating with the bypass chamber, a charge air passage outlet communicating with the bypass chamber, a control pressure passage nipple communicating with the diaphragm chamber, and a normal static pressure passage nipple communicating with the diaphragm chamber;
- a turbocharger including a turbine rotated by exhaust gas emitted from an engine through an exhaust manifold, and a compressor compressing air introduced into an air duct so that the air is defined as charge air;
- an intake manifold through which charge air cooled by an intercooler is supplied to the engine, the intake manifold including a throttle valve for changing a flow rate of the charge air, the charge air at a front end portion of the throttle valve being transferred to each of the bypass chamber and a normal static pressure chamber of the anti-surge valve through the intake manifold, a pressure by the charge air at a rear end portion of the throttle valve being transferred to a control pressure chamber of the anti-surge valve through the intake manifold;
- and
- a bypass line connected to the anti-surge valve, the charge air discharged from the anti-surge valve being returned back to the compressor of the turbocharger via the bypass line.
Dependencies are inferred from the claim text.