Systems and method for an exhaust gas recirculation cooler coupled to a cylinder head

A method, comprising:

• routing exhaust gas internally through a cylinder head from an exhaust passage downstream of an engine cylinder through a first flange and a first gasket to an EGR inlet port of an EGR cooler directly coupled, via the first flange, to a first side of the cylinder head;
• flowing exhaust gas through the EGR cooler from the EGR inlet port, through the first flange and the first gasket, to an EGR outlet port of the EGR cooler and then through a second flange and a second gasket, to the cylinder head and then to an intake manifold, the EGR outlet port directly coupled, via the second flange, to the first side of the cylinder head;
• flowing coolant from inside the cylinder head and then through the first flange to a coolant inlet port of the EGR cooler and then through the EGR cooler;
• and
• flowing coolant from a coolant outlet port of the EGR cooler, through the second flange, to a radiator via an internal passage of the cylinder head, where the EGR inlet port, the EGR outlet port, and the coolant inlet port of the EGR cooler face a same side of the cylinder head.

An EGR system, comprising:

• an EGR cooler module including a housing including a body and four engine connection ports including a module EGR inlet port, a module EGR outlet port, a module coolant inlet port, and a module coolant outlet port, the four engine connection ports extending from the body and all arranged in a common plane, the module EGR inlet port and the module coolant inlet port positioned through a first flange, and the module EGR outlet port and the module coolant outlet port positioned through a second flange spaced away and separate and different from the first flange;
• a cylinder head including a single side having four module connection ports including an engine EGR outlet port shaped to couple with the module EGR inlet port, an engine EGR inlet port shaped to couple with the module EGR outlet port, an engine coolant outlet port shaped to couple with the module coolant inlet port, and an engine coolant inlet port shaped to couple with the module coolant outlet port, a first gasket between the cylinder head and the first flange, and a second gasket between the cylinder head and the second flange;
• and
• a radiator coupled to the module coolant outlet port via an internal passage of the cylinder head.