A tube type heat exchanger includes a core includes multiple tubes, a header plate defining an array of apertures in which said tubes are received, and a coolant jacket arranged about said core. The header plate includes a body defining a central region and an edge region circumferential to said central region. The central region defines said array of apertures. The edge region includes a flange. The header plate is connected to the coolant jacket via first and second contact areas between the header plate and the coolant jacket. The flange is outboard of the coolant jacket. The first contact area is between the flange and the coolant jacket; and the second contact area is inboard of the first contact area.

An internal combustion engine system includes an engine block having one or more piston-cylinder arrangements communicating with an intake manifold and an exhaust manifold, a high-pressure (HP) turbocharger including an HP turbine in communication with the exhaust manifold and including an HP compressor in communication with the intake manifold, a low-pressure (LP) turbocharger including an LP turbine in communication with the exhaust manifold via the HP turbine and including an LP compressor in communication with the intake manifold via the HP compressor, an exhaust gas recirculation (EGR) system including an EGR pump upstream of the HP turbine and in communication with the exhaust manifold at an inlet side of the EGR pump and in communication with the intake manifold at an outlet side of the EGR pump, and an intercooler interposed between the LP compressor and the HP compressor.

An internal combustion engine system includes an engine block having one or more piston-cylinder arrangements communicating with an intake manifold and an exhaust manifold, a high-pressure (HP) turbocharger including an HP turbine in communication with the exhaust manifold and including an HP compressor in communication with the intake manifold, a low-pressure (LP) turbocharger including an LP turbine in communication with the exhaust manifold via the HP turbine and including an LP compressor in communication with the intake manifold via the HP compressor, an exhaust gas recirculation (EGR) system including an EGR pump upstream of the HP turbine and in communication with the exhaust manifold at an inlet side of the EGR pump and in communication with the intake manifold at an outlet side of the EGR pump, and an intercooler interposed between the LP compressor and the HP compressor.

A method includes operating a spark ignition engine and flowing low pressure exhaust gas recirculation (EGR) from an exhaust to an inlet of the spark ignition engine. The method includes interpreting a parameter affecting an operation of the spark ignition engine, and determining a knock index value in response to the parameter. The method further includes reducing a likelihood of engine knock in response to the knock index value exceeding a knock threshold value.

A method includes operating a spark ignition engine and flowing low pressure exhaust gas recirculation (EGR) from an exhaust to an inlet of the spark ignition engine. The method includes interpreting a parameter affecting an operation of the spark ignition engine, and determining a knock index value in response to the parameter. The method further includes reducing a likelihood of engine knock in response to the knock index value exceeding a knock threshold value.

An embodiment apparatus for reducing fouling of an exhaust gas recirculation (EGR) cooler includes an exhaust gas transfer part configured to connect a diesel oxidation catalyst (DOC) of an exhaust gas post-treatment system extending from an engine through an exhaust line to an EGR cooler installed in an EGR line and configured to recirculate exhaust gas discharged from an exhaust manifold to an intake manifold, a valve installed in the exhaust gas transfer part, and a controller configured to selectively open the valve as the exhaust gas post-treatment system enters a predetermined diesel particulate filter (DPF) regeneration condition and allow exhaust gas discharged from the DOC to be supplied to the EGR cooler through the exhaust gas transfer part.

The present invention relates to an EGR cooler for a vehicle capable of increasing space utilization with a compact configuration, increasing an area in which exhaust gas exchanges heat with a cooling fluid, and reducing a pressure difference in exhaust gas at an exhaust gas inlet and an exhaust gas outlet since a plurality of gas tubes installed in a housing, respectively, are configured of a flat portion, a first bent portion, and a second bent portion and a length of the flat portion is longer than a height of the first bent portion and the second bent portion.

The present invention relates to an EGR cooler for a vehicle capable of increasing space utilization with a compact configuration, increasing an area in which exhaust gas exchanges heat with a cooling fluid, and reducing a pressure difference in exhaust gas at an exhaust gas inlet and an exhaust gas outlet since a plurality of gas tubes installed in a housing, respectively, are configured of a flat portion, a first bent portion, and a second bent portion and a length of the flat portion is longer than a height of the first bent portion and the second bent portion.

A system and method for condensation management in a low-pressure loop EGR system are provided. The system includes an EGR condensation temperature module configured to determine an EGR condensation temperature of recirculated exhaust gas upstream of an EGR cooler and an EGR coolant temperature controller communicably coupled to the EGR condensation temperature module. The EGR coolant temperature controller provides EGR coolant to the EGR cooler at or above the EGR condensation temperature. The system also includes a charge air condensation temperature module configured to determine a charge air condensation temperature of charge air upstream of a charge air cooler and a charge air coolant temperature controller communicably coupled to the charge air condensation temperature module. The charge air coolant temperature controller provides charge air coolant to the charge air cooler at or above the charge air condensation temperature.

A system and method for condensation management in a low-pressure loop EGR system are provided. The system includes an EGR condensation temperature module configured to determine an EGR condensation temperature of recirculated exhaust gas upstream of an EGR cooler and an EGR coolant temperature controller communicably coupled to the EGR condensation temperature module. The EGR coolant temperature controller provides EGR coolant to the EGR cooler at or above the EGR condensation temperature. The system also includes a charge air condensation temperature module configured to determine a charge air condensation temperature of charge air upstream of a charge air cooler and a charge air coolant temperature controller communicably coupled to the charge air condensation temperature module. The charge air coolant temperature controller provides charge air coolant to the charge air cooler at or above the charge air condensation temperature.