Split-cycle engine

The present disclosure relates to the field of split cycle engines. Specifically, the split-cycle internal combustion engine comprises a compression cylinder containing a compression piston, a combustion cylinder containing a combustion piston, a heat exchanger and a heat exchanger bypass channel; wherein the heat exchanger is arranged to exchange heat from the exhaust fluid from the combustion cylinder and from the working fluid supplied to the combustion cylinder by the compression cylinder, and a heat exchanger bypass passage selectively operable to prevent at least some of the fluid from flowing through the heat exchanger. Embodiments of the present disclosure may prevent thermotropic material defects associated with engine operation. 本公开涉及分体循环发动机领域。具体而言，本公开提供了一种分体循环内燃发动机，其包括：容纳压缩活塞的压缩缸、容纳燃烧活塞的燃烧缸、换热器和换热器旁通通道；其中该换热器布置成交换来自所述燃烧缸的排出流体和来自所述压缩缸供应到所述燃烧缸的工作流体的热量，该换热器旁通通道可选择性地操作以使至少一些流体避免流过所述换热器。本公开的实施例可以防止与发动机操作相关的热致材料缺陷。