Abstract: Systems and methods for cooling a fuel injector of a direct injection engine are disclosed. In order to route coolant directly beneath a fuel injector adjacent to a combustion chamber in a direct injection engine, a recess is cast beneath the injector and a slotted gasket is provided to route coolant from core prints of the exiting water jacket into the recess beneath the injector.

Abstract: An engine having one of a plurality of exhaust valves in each cylinder that may be deactivated is disclosed. In one example, one exhaust valve of each cylinder is deactivated in response to engine speed. The engine may have improved engine torque at low engine speeds and reduced time to torque (e.g., turbo lag).

Abstract: A cylinder head including an integrated exhaust manifold (IEM cylinder head) is coupled to a cylinder block of an engine. The IEM cylinder head comprises an exhaust collector coupled to cylinder exhaust valves, an exhaust port coupled to the exhaust collector, and a coolant jacket for cooling the cylinder head. An upper wall of the cylinder head at a region above the exhaust collector and proximal to the exhaust port may include a degas valve and a temperature sensor. The degas valve may be coupled a top most portion of an upper coolant core of the coolant jacket to direct accumulated steam and/or gas out of the upper coolant core to a degas bottle. The temperature sensor may send a temperature signal to a controller, and if the temperature signal is greater than a threshold, the controller may send an indication to an operator of over-temperature conditions of the engine.

Abstract: An engine having one of a plurality of exhaust valves in each cylinder that may be deactivated is disclosed. In one example, one exhaust valve of each cylinder is deactivated in response to engine speed. The engine may have improved engine torque at low engine speeds and reduced time to torque (e.g., turbo lag).

Abstract: A cylinder head with an integrated exhaust manifold is provided, the integrated exhaust manifold including an exhaust manifold flange. In one example, the cylinder head includes a cooled flange to control exhaust system heat. The cylinder head can improve operation of an integrated cylinder head during at least some operating conditions.

Abstract: A cylinder head of an engine with an integrated exhaust manifold is provided. In one example, the inner exhaust runners and outer exhaust runners have different cross-sectional areas. This arrangement may be beneficial to maintain exhaust flow rates in the integrated exhaust manifold.

Abstract: Systems and methods for cooling a fuel injector of a direct injection engine are disclosed. In order to route coolant directly beneath a fuel injector adjacent to a combustion chamber in a direct injection engine, a recess is cast beneath the injector and a slotted gasket is provided to route coolant from core prints of the exiting water jacket into the recess beneath the injector.

Abstract: An engine having one of a plurality of exhaust valves in each cylinder that may be deactivated is disclosed. In one example, one exhaust valve of each cylinder is deactivated in response to engine speed. The engine may have improved engine torque at low engine speeds and reduced time to torque (e.g., turbo lag).

Abstract: A cylinder head for an engine is provided. The cylinder head may include an upper cooling jacket including at least a first inlet and a first outlet and a lower cooling jacket including at least a second inlet and a second outlet. The cylinder head may further include a first set of crossover coolant passages including one or more crossover coolant passages fluidly coupled to the upper cooling jacket and the lower cooling jacket and adjacent to one or more combustion chambers.

Abstract: An engine having one of a plurality of exhaust valves in each cylinder that may be deactivated is disclosed. In one example, one exhaust valve of each cylinder is deactivated in response to engine speed. The engine may have improved engine torque at low engine speeds and reduced time to torque (e.g., turbo lag).