US 12,078,096 B2
Split cycle engine
Richard Osborne, West Sussex (GB); Ken Pendlebury, West Sussex (GB); Matthew Keenan, West Sussex (GB); Andrew Atkins, Shoreham-By-Sea (GB); Andrew Ward, West Sussex (GB); and Robert Morgan, Shoreham By Sea (GB)
Assigned to Dolphin N2 Limited, (GB)
Filed by Dolphin N2 Limited, Shoreham-By-Sea (GB)
Filed on Aug. 10, 2022, as Appl. No. 17/885,268.
Application 17/885,268 is a continuation of application No. 16/634,008, granted, now 11,428,151, previously published as PCT/GB2018/052060, filed on Jul. 20, 2018.
Claims priority of application No. 1712120 (GB), filed on Jul. 27, 2017.
Prior Publication US 2023/0030156 A1, Feb. 2, 2023
Int. Cl. F02B 33/22 (2006.01); F02B 3/02 (2006.01); F02B 29/04 (2006.01); F02B 33/44 (2006.01); F02B 51/04 (2006.01); F02D 41/00 (2006.01); F02D 41/14 (2006.01); F02D 41/30 (2006.01); F02D 41/40 (2006.01); F02M 27/06 (2006.01)
CPC F02B 33/22 (2013.01) [F02B 3/02 (2013.01); F02B 29/0493 (2013.01); F02B 33/44 (2013.01); F02B 51/04 (2013.01); F02D 41/0002 (2013.01); F02D 41/1446 (2013.01); F02D 41/1498 (2013.01); F02D 41/3023 (2013.01); F02D 41/401 (2013.01); F02M 27/06 (2013.01); F02D 2200/021 (2013.01); F02D 2200/023 (2013.01); F02D 2200/024 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A split cycle internal combustion engine comprising:
a compression cylinder accommodating a compression piston;
a combustion cylinder accommodating a combustion piston;
a crossover passage between the compression cylinder and the combustion cylinder arranged to provide compressed working fluid from the compression cylinder to the combustion cylinder;
an inlet valve for controlling a flow of compressed working fluid from the crossover passage into the combustion cylinder, wherein the inlet valve is operable to move between an open state and a closed state; and
a controller configured to receive an indication of an engine parameter, to determine based on the indication of the engine parameter a value for another engine parameter, and to control the value for the engine parameter so that the compressed working fluid flows into the combustion cylinder at a speed greater than a speed threshold;
wherein the engine is a recuperated split cycle internal combustion engine having a recuperator arranged to heat compressed working fluid as the compressed working fluid flows from the compression cylinder to the combustion cylinder through the crossover passage; and
wherein the recuperator is arranged to recover heat from fluid exhausted from the combustion cylinder and to use this recovered heat to heat the compressed working fluid as the compressed working fluid flows from the compression cylinder to the combustion cylinder through the crossover passage.