A cooling device configured to cool, using a coolant, an injection valve that injects an additive includes a rotary member surrounding an outer periphery of the injection valve and extending along the injection valve. The rotary member is supported to be rotatable around the injection valve. A clearance between an outer peripheral surface of the injection valve and an inner peripheral surface of the rotary member defines a passage through which the coolant flows. The rotary member has a rotation imparting part that causes the rotary member to rotate about the injection valve in response to a flow of the coolant.

An electrically controlled valve for the circulation of hot fluids is made up of an electromagnetic actuator and a valve. The valve has an opening provided with a movable sealing member driven by a rotation shaft perpendicular to the axis of the opening, the electromagnetic actuator driving the rotation of the shaft, the output shaft of the actuator being substantially coaxial with the rotation shaft. The front end of the rotation shaft and the front end of the output shaft are not in direct contact. The coupling between the rotation shaft of the valve and the output shaft of the actuator is provided by a coupling member placed between the front end of the output shaft and the front end of the shaft. The coupling member transmitting rotation torque with a misalignment tolerance between the output shaft and the rotation shaft of the valve. The valve also having thermally insulation for mechanical connection between peripheral areas of the body of the actuator and the body of the valve.

An exhaust valve includes a body defining a passage section and extending along an extension axis from an upstream inlet able to be connected to an upstream pipe to a downstream outlet able to be connected to a downstream pipe. A flap is positioned in the body, across the passage section, and rotates around a rotation axis secant to the extension axis between a closed orientation where the flap closes the passage section and an open orientation where the flap frees the passage section. A transmission member is aligned along the rotation axis and is secured to the flap by a first end, and the second end of which is positioned outside the body. A rotating actuator drives the flap via the second end of the transmission member. A fastening element is used to fasten the actuator on the outside of the body (2). The valve further includes at least one fin positioned between the body and the actuator. Also, an exhaust line includes such a valve.

A recirculation valve of an exhaust gas recirculation apparatus includes: a valve housing having a gas inlet into which a recirculation gas flows, a gas outlet from which the recirculation gas is discharged, and an intermediate inlet disposed between the gas inlet and the gas outlet; and a valve body selectively opening and closing the gas inlet and the intermediate inlet.

A recirculation valve of an exhaust gas recirculation apparatus includes: a valve housing having a gas inlet into which a recirculation gas flows, a gas outlet from which the recirculation gas is discharged, and an intermediate inlet disposed between the gas inlet and the gas outlet; and a valve body selectively opening and closing the gas inlet and the intermediate inlet.

A hybrid vehicle includes an engine with cylinders generating driving power and a turbocharger having a turbine in an exhaust line, and a compressor which rotates with the turbine and compresses intake gas. An electric supercharger is disposed in the intake line upstream from the compressor, a catalytic converter is disposed in the exhaust line downstream from the turbine. A post processing bypass line connects the exhaust line at a downstream portion of the catalytic converter and the intake line at a downstream portion of the electric supercharger. A low pressure EGR device includes a low pressure EGR line branching off from the exhaust line and merging into the intake line and a low pressure EGR cooler disposed therein. A high pressure EGR device includes a high pressure EGR line branching off from an exhaust system and merging into an intake system, and a high pressure EGR cooler disposed therein.

A hybrid vehicle includes an engine with cylinders generating driving power and a turbocharger having a turbine in an exhaust line, and a compressor which rotates with the turbine and compresses intake gas. An electric supercharger is disposed in the intake line upstream from the compressor, a catalytic converter is disposed in the exhaust line downstream from the turbine. A post processing bypass line connects the exhaust line at a downstream portion of the catalytic converter and the intake line at a downstream portion of the electric supercharger. A low pressure EGR device includes a low pressure EGR line branching off from the exhaust line and merging into the intake line and a low pressure EGR cooler disposed therein. A high pressure EGR device includes a high pressure EGR line branching off from an exhaust system and merging into an intake system, and a high pressure EGR cooler disposed therein.

This present invention relates to a fluid flow control device, such as a valve in an internal combustion exhaust pipe. The fluid flow control device includes a valve assembly and an actuator assembly. The fluid flow control device further includes a cooling ring positioned between the actuator assembly and valve assembly in order to thermally isolate the sensors, controllers and other elements of the actuator assembly from heat that may be present in the valve assembly.

A variable exhaust valve assembly for a vehicle includes an exhaust housing, a power transmission device that transmits rotational power, a shaft that extends through the exhaust housing and is coupled with a valve so as to open and close the exhaust housing, and a heat shielding unit to reduce heat transfer between the power transmission device and the exhaust housing. The power transmission device is configured to regulate an opening degree of the valve. The variable exhaust valve assembly is improved in durability by minimizing damage to power transmission caused by high-temperature heat of exhaust gas, and reducing vibration transmitted to the power transmission device.

A device is provided for exhaust gas recirculation (EGR), in particular in diesel engines, from the exhaust gas tract into the fresh air path of the engine, wherein a cooling device connected to the cooling system of the engine is provided within an EGR section as an exhaust-gas (EG)/coolant heat exchanger, with which an EGR valve for proportioning the EG recirculation rate is associated. The EGR valve is connected to a coolant, and the cooling device comprises an EG pre-cooler and an EG main cooler connected downstream of the EG pre-cooler. The EGR valve is installed between the EG pre-cooler and the EG main cooler in a valve housing between the EG pre-cooler and the EG main cooler. A method for EGR is provided as well.