Patent ID: 11970966
Assignee: DOLPHIN N2 LIMITED
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F  Y | IPC F

Claim 0:
1. A split cycle internal combustion engine comprising:
a combustion cylinder accommodating a combustion piston;
a compression cylinder accommodating a compression piston and being arranged to receive air and compress the air to provide a compressed working fluid to the combustion cylinder for combustion, the compression cylinder being coupled to a water reservoir; and
a controller arranged to receive an indication of at least one parameter associated with at least one of: (i) the engine, and (ii) a fluid associated therewith, and control an amount of water delivered from the reservoir to the compression cylinder based on the indication of the at least one parameter such that during a compression stroke water in the compression cylinder absorbs, via both sensible heat and latent heat, a rise in temperature caused by the compression stroke such that a majority of the water vaporises into its gaseous phase during the compression stoke and a rise in temperature caused by the compression stroke is limited by absorption of heat by the water;
wherein the controller is configured to control the amount of water delivered to the compression cylinder such that an amount of water in the compressed working fluid at an end of the compression stroke results in a level of water concentration in the compressed working fluid that is less than a threshold water concentration level, wherein the threshold water concentration level is selected based on a maximum water concentration level in the compressed working fluid for supporting combustion in the combustion cylinder.