General Electric Company

Transportation IP Holdings, LLC

Ganesha Koggu Naik

Paul Lloyd Flynn

Thomas Michael Lavertu

Victor Manuel Salazar

Jeffrey David Willis

Kotha Ramesh Kumar

Methods and systems are provided for a coolant system coupled to cylinders in a locomotive engine. In one example, a coolant system coupled to an individual cylinder may include a cylinder liner jacket encircling the cylinder, a cylinder head lower coolant jacket surrounding a lower surface of a cylinder head placed over the cylinder, a cylinder head upper coolant jacket surrounding an upper surface of the cylinder head, and a cylinder head exhaust port cooling jacket surrounding an exhaust port of the cylinder. Coolant may flow to each of the cooling jackets from a coolant feed gallery located in the engine crankcase, and after flowing through the engine, the coolant may return to a coolant return gallery also located in the engine crankcase.

Engine coolant system and method

Various methods and systems are provided for a multi-fuel capable engine. In one example, a system comprises an engine having at least one cylinder controlled via an intake valve, a first fuel system to deliver liquid fuel and a second fuel system to deliver gaseous fuel to the at least one cylinder, a variable valve timing actuation system to adjust one or more of an opening or a closing timing of the intake valve, and a controller. The controller is configured to, during a liquid fuel only mode, adjust the variable valve timing actuation system to close the intake valve at a first timing based at least on engine load, and during a multi-fuel mode, adjust the variable valve timing actuation system to close the intake valve at a second timing.

Method and systems for a multi-fuel engine

Various methods and systems are provided for varying valve timing in a V-engine. In one embodiment, a method for an engine comprises pivoting a first cam follower for a first cylinder of a first bank and a second cam follower for a second cylinder of a second bank about a rotatable pivot shaft, driving the first cam follower and the second cam follower with a camshaft to operate a respective first valve of the first cylinder and a second valve of the second cylinder, and rotating the pivot shaft to vary a valve timing of the first cylinder and the second cylinder.

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Bengaluru, India

Ganesha Koggu Naik