A throttle valve heating control apparatus of an exhaust gas recirculation (EGR) system for a combustion engine includes a heat source installed in a valve housing and operated when receiving a voltage from a battery of a vehicle, an outside air temperature measurement unit configured to measure a temperature of outside air of the vehicle, a battery voltage measurement unit configured to measure the voltage of the battery, and a controller configured to selectively control an operation of the heat source when the temperature of the outside air and the voltage satisfy a predetermined condition in a state in which the vehicle is turned on, and to determine whether an operation of the heat source is maintained through re-comparison of the temperature of the outside air in a state in which the heat source is operated.

A diesel engine is provided with an EGR line G3 configured to recirculate a portion of exhaust gas, discharged from an engine body 11, to the engine body 11 as combustion gas, an EGR cooler 16 provided in the EGR line G3 and configured to cool exhaust gas by coolant, a coolant supply device configured to supply coolant to the EGR cooler 16, and a control device 30 configured to activate the coolant supply device when the engine body 11 is in operation and a temperature of the engine body 11 is lower or equal to a preset prescribed temperature.

A diesel engine is provided with an EGR line G3 configured to recirculate a portion of exhaust gas, discharged from an engine body 11, to the engine body 11 as combustion gas, an EGR cooler 16 provided in the EGR line G3 and configured to cool exhaust gas by coolant, a coolant supply device configured to supply coolant to the EGR cooler 16, and a control device 30 configured to activate the coolant supply device when the engine body 11 is in operation and a temperature of the engine body 11 is lower or equal to a preset prescribed temperature.

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 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.

Corrosion control is periodically executed to corrode the entire surface of the engine part in contact with the condensate water. The corrosion control includes a set of an anterior half control and a posterior half control. The anterior half control is executed over a first period from time t2 to time t3. In the anterior half control, the engine 12 is operated in a predetermined operating region. The posterior half control is executed over a second period from time t3 to time t4.

Corrosion control is periodically executed to corrode the entire surface of the engine part in contact with the condensate water. The corrosion control includes a set of an anterior half control and a posterior half control. The anterior half control is executed over a first period from time t2 to time t3. In the anterior half control, the engine 12 is operated in a predetermined operating region. The posterior half control is executed over a second period from time t3 to time t4.

Externally-damped electromechanical valve assemblies well-suited for deployment within high vibratory operating environments, such as those associated with work vehicle engines, are provided. In embodiments, the valve assembly includes a housing through which a flow passage extends, a valve element positioned in the flow passage, a valve actuator, and control electronics electrically coupled to the valve actuator. The valve assembly may also contain a constrained layer damper including a first mass element and a first viscoelastic layer. The first mass element is mounted in suspension to the housing exterior for movement relative thereto when the first mass element is excited by vibrations transmitted through the housing. Constrained between the first mass element and the housing exterior, the first viscoelastic layer deflects in shear as the first mass element moves relative to the housing to attenuate the vibrations transmitted through the housing by conversion of vibrational energy to heat.

An exhaust manifold for use with an internal combustion engine, the exhaust manifold including a body, one or more fluid passageways defined by the body, a valve in fluid communication with at least one of the one or more fluid passageways, the valve being adjustable between an open configuration and a closed configuration, a mounting bracket supported by the body, and an actuator in operable communication with the valve and configured to adjust the valve between the open and closed configurations, and wherein the actuator is coupled to the mounting bracket.

An exhaust manifold for use with an internal combustion engine, the exhaust manifold including a body, one or more fluid passageways defined by the body, a valve in fluid communication with at least one of the one or more fluid passageways, the valve being adjustable between an open configuration and a closed configuration, a mounting bracket supported by the body, and an actuator in operable communication with the valve and configured to adjust the valve between the open and closed configurations, and wherein the actuator is coupled to the mounting bracket.