Coolant manifold adapter for integrated mounting of EEGR valve and throttle body on an engine

An internal combustion engine comprising:

• a cooling system through which liquid coolant is circulated;
• a mounting surface circumscribing a combustion air inlet through which combustion air enters the engine;
• an exhaust system through which exhaust gas resulting from combustion within the engine exits the engine;
• a one-piece adapter part mounted on the engine at the mounting surface and comprising a combustion air outlet in registration with the engine combustion air inlet;
• the adapter part further comprising a combustion air inlet, a coolant inlet, and a coolant outlet;
• an electric-operated exhaust gas recirculation valve for controlling the recirculation of engine exhaust gas through the engine and comprising a valve member that is positionable with respect to a valve seat that circumscribes an exhaust gas passageway in the adapter part;
• the adapter part further comprising an exhaust gas inlet that is communicated to the exhaust gas system for supplying exhaust gas to an inlet of the exhaust gas passageway;
• a throttle body assembly for controlling flow of combustion air into the engine and comprising a throttle body which is mounted on the adapter part and has an air outlet in registration with the combustion air inlet of the adapter part and a combustion air inlet through which combustion air enters the throttle body;
• the adapter part further comprising a first passageway that places its combustion air inlet, its combustion air outlet, and an outlet of its exhaust gas passageway in common, and a second passageway that places its coolant inlet and its coolant outlet in common;
• and
• wherein the engine cooling system is communicated to the coolant inlet and the coolant outlet of the adapter part to flow coolant through the second passageway.