The present disclosure relates to a control apparatus and method for preventing boiling of an exhaust gas recirculation (EGR) cooler, the apparatus including a coolant inflow passage configured to allow coolant to flow into the EGR cooler, a coolant discharge passage having one end connected to the EGR cooler to allow the coolant cooling EGR gas to be discharged, an EGR valve positioned adjacent to the EGR cooler to control a flow rate of gas flowing into the engine, and a control unit configured to determine the flow rate of the coolant flowing into the EGR cooler according to a number of revolutions of the engine, determine an opening amount of the EGR valve, determine whether the EGR cooler is in a micro-boiling condition, and perform compensation to perform boiling prevention when the EGR cooler satisfies the micro-boiling condition.

A vehicle engine 2 comprises an exhaust system having an exhaust manifold 12 and an exhaust purification device 18. The exhaust manifold 12 is disposed at a predetermined distance from a dash panel 106 constituting a body of the vehicle 100, the exhaust purification device 18 is disposed in a position overlapping a floor tunnel region 114, formed by a floor tunnel of the body, and is disposed below the exhaust manifold 12 and to one side of the center of the engine 2 in the cylinder-array direction, as viewed from the longitudinal direction of the vehicle 100. An exhaust purification device introduction passage 17 connecting the exhaust manifold 12 and the exhaust purification device 18 is disposed on the other side of the center of the exhaust manifold 12 in the cylinder-array direction, and extends below the exhaust manifold 12 to be connected to the exhaust purification device 18.

A vehicle engine 2 comprises an exhaust system having an exhaust manifold 12 and an exhaust purification device 18. The exhaust manifold 12 is disposed at a predetermined distance from a dash panel 106 constituting a body of the vehicle 100, the exhaust purification device 18 is disposed in a position overlapping a floor tunnel region 114, formed by a floor tunnel of the body, and is disposed below the exhaust manifold 12 and to one side of the center of the engine 2 in the cylinder-array direction, as viewed from the longitudinal direction of the vehicle 100. An exhaust purification device introduction passage 17 connecting the exhaust manifold 12 and the exhaust purification device 18 is disposed on the other side of the center of the exhaust manifold 12 in the cylinder-array direction, and extends below the exhaust manifold 12 to be connected to the exhaust purification device 18.

An engine and a method of controlling the engine may include an EGR injector provided such that EGR gas sprays that are injected toward a side wall of a combustion chamber reach the side wall of a combustion chamber, simultaneously; an EGR pipe connecting the EGR injector to an exhaust system of the engine and ejecting exhaust gas from the exhaust system; an EGR pump mounted in the EGR pipe and pumping the exhaust gas in the EGR pipe to supply the exhaust gas to the EGR injector; and controller connected to the EGR pump and the EGR injector and configured for controlling the EGR pump and the EGR injector so that the EGR injector injects EGR gas into the combustion chamber.

A cooling system CS according to one aspect of the present invention is provided with: a first cooling circuit C1 which is provided with a first cooling means 54 and in which cooling water can circulate; a second cooling circuit C2 which is provided with a second cooling means 64 and in which cooling water for cooling an engine body 12 can circulate; and an EGR cooler 46 configured to cool an EGR gas. The EGR cooler 46 is provided with: a first EGR cooler 52 installed in the first cooling circuit C1; and a second EGR cooler 62 installed in the second cooling circuit C2. Furthermore, in order to suppress the generation of condensed water due to condensation of moisture in an exhaust gas during the cooling of the EGR cooler 46, the cooling system CS is provided with a valve 80 configured to control the amount of the cooling water that flows from the second cooling circuit C2 to the first cooling circuit C1.

A method for controlling a vehicle cooling system is provided. The system includes an engine, an EGR cooler, an oil cooler, a heater, a radiator, and a controller. The engine, the EGR cooler, the oil cooler, the heater, and the radiator are respectively connected through a coolant line and coolant circulates through the engine, the EGR cooler, the oil cooler, the heater, and the radiator by operation of a water pump. The controller receives the coolant from the engine and operates a control valve that is connected with the oil cooler, the heater, and the radiator. The method includes sensing driving conditions and operating the control valve when a warm mode is required to increase the temperature within the vehicle based on the sensed driving conditions. The control valve is operated based on first to third modes depending on a coolant temperature.

A method for controlling a vehicle cooling system is provided. The system includes an engine, an EGR cooler, an oil cooler, a heater, a radiator, and a controller. The engine, the EGR cooler, the oil cooler, the heater, and the radiator are respectively connected through a coolant line and coolant circulates through the engine, the EGR cooler, the oil cooler, the heater, and the radiator by operation of a water pump. The controller receives the coolant from the engine and operates a control valve that is connected with the oil cooler, the heater, and the radiator. The method includes sensing driving conditions and operating the control valve when a warm mode is required to increase the temperature within the vehicle based on the sensed driving conditions. The control valve is operated based on first to third modes depending on a coolant temperature.

A method for controlling a cooling system for a vehicle is provided. The system includes an engine, an EGR cooler, an oil cooler, a heater, a radiator, and a controller. The engine, the EGR cooler, the oil cooler, the heater, and the radiator are respectively connected through a coolant line and coolant circulates through the engine, the EGR cooler, the oil cooler, the heater, and the radiator by operation of a water pump. The controller receives the coolant from the engine and operates a control valve connected with the oil cooler, the heater, and the radiator. The method includes: sensing driving conditions and operating the control valve when a cooling mode is required to decrease the temperature within the vehicle based on the sensed driving conditions. The control valve is operated based on modes controlled depending on a coolant temperature, and among the plurality of modes, one is iteratively performed.

A method for controlling a cooling system for a vehicle is provided. The system includes an engine, an EGR cooler, an oil cooler, a heater, a radiator, and a controller. The engine, the EGR cooler, the oil cooler, the heater, and the radiator are respectively connected through a coolant line and coolant circulates through the engine, the EGR cooler, the oil cooler, the heater, and the radiator by operation of a water pump. The controller receives the coolant from the engine and operates a control valve connected with the oil cooler, the heater, and the radiator. The method includes: sensing driving conditions and operating the control valve when a cooling mode is required to decrease the temperature within the vehicle based on the sensed driving conditions. The control valve is operated based on modes controlled depending on a coolant temperature, and among the plurality of modes, one is iteratively performed.

An exhaust gas recirculation (EGR) system for an internal combustion (IC) engine. The EGR system has a first cooler configured to cool exhaust from an exhaust system of the IC and to drain exhaust liquid formed by the cooling. The EGR system has a mixture chamber configured to mix exhaust cooled by the first cooler with intake air to form an exhaust-air mixture. The EGR system has a second cooler configured to cool the exhaust-air mixture. The EGR system has a heat exchange system for circulating and cooling coolant fluid used by the first and second coolers, and includes a split valve configured to divide coolant fluid flow between the first and second coolers. The EGR system has an engine control module configured to adjust the split valve based on comparing a temperature of the exhaust-air mixture to a determined dewpoint temperature of the exhaust-air mixture.