US 11,092,066 B2
Split cycle internal combustion engine
Andrew Atkins, Shoreham-by-Sea (GB); and Robert Morgan, Shoreham-by-Sea (GB)
Assigned to Dolphin N2 Limited
Appl. No. 16/498,271
Filed by Dolphin N2 Limited, Shoreham-by-Sea (GB)
PCT Filed Mar. 13, 2018, PCT No. PCT/GB2018/050642
§ 371(c)(1), (2) Date Sep. 26, 2019,
PCT Pub. No. WO2018/178624, PCT Pub. Date Oct. 4, 2018.
Claims priority of application No. 1705046 (GB), filed on Mar. 29, 2017.
Prior Publication US 2020/0049058 A1, Feb. 13, 2020
Int. Cl. F02B 33/22 (2006.01); F02B 29/04 (2006.01); F02B 33/30 (2006.01); F02B 47/02 (2006.01); F02M 25/022 (2006.01)
CPC F02B 33/22 (2013.01) [F02B 29/0406 (2013.01); F02B 29/0481 (2013.01); F02B 29/0493 (2013.01); F02B 33/30 (2013.01); F02B 47/02 (2013.01); F02M 25/0227 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A split cycle internal combustion engine apparatus, comprising:
a combustion cylinder accommodating a combustion piston;
a compression cylinder accommodating a compression piston and being arranged to provide compressed fluid to the combustion cylinder, the compression cylinder being coupled to a first liquid coolant reservoir and a second liquid coolant reservoir; and
a controller arranged to receive an indication of at least one parameter associated with the engine, and control delivery of at least one of a first liquid coolant from the first liquid coolant reservoir and a second liquid coolant from the second liquid coolant reservoir to the compression cylinder based on the indication of the at least one parameter such that the at least one liquid coolant vaporises into a gaseous phase during a compression stroke and a rise in temperature caused by the compression stroke is limited by the absorption of heat by the at least one liquid coolant;
wherein controlling delivery of at least one of the first liquid coolant and the second liquid coolant comprises at least one of:
controlling the timing of the delivery of at least one of the first liquid coolant and the second liquid coolant relative to a position of the compression piston based on the indication of the at least one parameter;
controlling the ratio of delivery of the first liquid coolant to the second liquid coolant based on the indication of the at least one parameter.