Patent ID: 8857385

Claim:
An engine cooling system, comprising: a cylinder head including an integrated exhaust manifold that directs exhaust gases to an exhaust port; a coolant passage that includes an upper coolant jacket and a lower coolant jacket, the coolant passage surrounding the exhaust manifold and having an upper wall vertically above the exhaust port; a degas port with a horizontally-positioned inlet and an outlet above the inlet, the degas port positioned in a top-most region of a dome above a collector within the upper wall and fluidically coupled to the coolant passage; and a temperature sensor positioned in the upper wall of the coolant passage proximate to a confluence of a plurality of exhaust as ports in the exhaust manifold, the temperature sensor further encompassed within a vertical wall of the cylinder head proximate to an upper wall of the collector, the degas port being mounted in the cylinder head a first distance from a flange of a single exhaust exit port along a lateral axis of the cylinder head when the system is mounted in a passenger vehicle, and the temperature sensor being mounted a second distance from the flange of the single exhaust port along the lateral axis of the cylinder head when the system is mounted in the passenger vehicle, the second distance less than the first distance.