A valve for m exhaust gas recirculation Mae in an engine includes a first barrel connectable to a first group of cylinders, a second barrel connectable to a second group of cylinders, and a center barrel between the first and second barrels and connectable to an intake of the engine, A poppet valve with two valve heads mounted on a valve stem is provided to open and close openings between the first and second barrels, with one of the valve beads of the poppet valve opening into the center barrel Vanes are provided in the center barrel to direct flow from the opening by the valve bead that opens into the center barrel toward the outlet opening.

An internal combustion engine system includes an engine, an air intake system configured to provide intake air to the engine, and an exhaust system configured to receive exhaust gas from the engine. The engine system further includes a secondary air system including a pump, an exhaust gas recirculation (EGR) system, and a valve system operably associated with the secondary air system and the EGR system. The valve system is configured to operate in a secondary air mode where the pump is utilized to supply secondary air to the exhaust system, and an EGR mode where the pump is utilized to supply EGR to the air intake system.

An internal combustion engine system includes an engine, an air intake system configured to provide intake air to the engine, and an exhaust system configured to receive exhaust gas from the engine. The engine system further includes a secondary air system including a pump, an exhaust gas recirculation (EGR) system, and a valve system operably associated with the secondary air system and the EGR system. The valve system is configured to operate in a secondary air mode where the pump is utilized to supply secondary air to the exhaust system, and an EGR mode where the pump is utilized to supply EGR to the air intake system.

A valve for mixing two gas streams, having a housing, a first gas inlet, a second gas inlet, and a gas outlet. The gas inlets are fluidically connected to the gas outlet. Downstream of the first gas inlet there is a guide element mounted displaceably inside the housing. By displacing the guide element, it is possible to control a flow cross section of a flow transfer opening for the transfer flow of the gas volume flowing in through the first gas inlet to the gas outlet through the guide element.

An exhaust manifold may include first to fourth exhaust pipes respectively connected to first to fourth cylinders which is sequentially disposed in an engine, the exhaust manifold may include a first exhaust manifold including the second exhaust pipe connected to the second cylinder and the third exhaust pipe connected to the third cylinder; a second exhaust manifold including the first exhaust pipe connected to the first cylinder, the fourth exhaust pipe connected to the fourth cylinder and the first exhaust pipe, and a recirculation valve apparatus mounted in the first exhaust pipe; wherein the second exhaust pipe and the third exhaust pipe are directly connected to a converter housing for mounting a catalytic converter in which purifies exhaust gas, and wherein the fourth exhaust pipe is connected to the first exhaust pipe at upstream of the recirculation valve, and the first exhaust pipe is directly connected to the converter housing.

An exhaust manifold may include first to fourth exhaust pipes respectively connected to first to fourth cylinders which is sequentially disposed in an engine, the exhaust manifold may include a first exhaust manifold including the second exhaust pipe connected to the second cylinder and the third exhaust pipe connected to the third cylinder; a second exhaust manifold including the first exhaust pipe connected to the first cylinder, the fourth exhaust pipe connected to the fourth cylinder and the first exhaust pipe, and a recirculation valve apparatus mounted in the first exhaust pipe; wherein the second exhaust pipe and the third exhaust pipe are directly connected to a converter housing for mounting a catalytic converter in which purifies exhaust gas, and wherein the fourth exhaust pipe is connected to the first exhaust pipe at upstream of the recirculation valve, and the first exhaust pipe is directly connected to the converter housing.

A turbocharger system includes a valve assembly with an inlet, a first outlet, and a second outlet. The inlet is configured for receiving flow of an exhaust gas from an engine. The valve assembly includes a valve structure disposed within a housing. The valve structure is configured to rotate about an axis of rotation between a first position and a second position. The valve structure defines a nonlinear flow passage with an axial upstream end and radial downstream end. The valve structure, in a first position, directs exhaust gas from the inlet to the first outlet and closes off the second outlet. The valve structure, in the second position, directs exhaust gas from the inlet to the second outlet and closes off the first outlet.

A turbocharger system includes a valve assembly with an inlet, a first outlet, and a second outlet. The inlet is configured for receiving flow of an exhaust gas from an engine. The valve assembly includes a valve structure disposed within a housing. The valve structure is configured to rotate about an axis of rotation between a first position and a second position. The valve structure defines a nonlinear flow passage with an axial upstream end and radial downstream end. The valve structure, in a first position, directs exhaust gas from the inlet to the first outlet and closes off the second outlet. The valve structure, in the second position, directs exhaust gas from the inlet to the second outlet and closes off the first outlet.

A valve for mixing two gas streams, having a housing, a first gas inlet, a second gas inlet, and a gas outlet. The gas inlets are fluidically connected to the gas outlet . Downstream of the first gas inlet there is a guide element mounted displaceably inside the housing. By displacing the guide element, it is possible to control a flow cross section of a flow transfer opening for the transfer flow of the gas volume flowing in through the first gas inlet to the gas outlet through the guide element.

This EGR system is applied to a vehicle including an exhaust purification device capable of purifying NOx, and is provided with: an EGR passageway; a flow volume modification mechanism; and a control device which, when the NOx concentration in exhaust discharged from the exhaust purification device is greater than a reference value, starts to perform a control process for controlling the flow volume modification mechanism so that the ratio of the flow volume of a first exhaust that flows into a tail pipe decreases and the ratio of the flow volume of a second exhaust that flows into the EGR passageway increases, and makes the ratio of the flow volume of the second exhaust greater than the ratio of the flow volume of the first exhaust during the control process.