Hydrogen combustion engine torque control

Abstract

Title: Hydrogen combustion engine torque control Abstract A hydrogen combustion engine comprising a plurality of combustion chambers each comprising a hydrogen fuel supply and a fuel ignition device, for converting the ignited hydrogen fuel to work, the engine further comprising an air intake manifold and an exhaust, a turbine for driving a turbocompressor; and an air intake throttle valve for closing off the air intake manifold from the turbocompressor, and an engine controller, wherein the engine controller is arranged to control the air intake throttle valve in accordance with a torque request T and corresponding fuel supply S to the combustion chamber; wherein, in a negative torque transient T’ that exceeds a threshold value, the controller is arranged to limit a fuel supply S to a fraction S’ of the plurality of combustion chambers to keep the air to fuel ratio within a combustible range during a transient period of closing the intake valve, and wherein said fraction S’ of combustion chambers receives a fuel quantity s’ that is correspondingly increased relative to the fraction s that would normally be provided to all of the plurality of combustion chambers.