SPLIT CYCLE ENGINE CONTROL

The split cycle engine of the present disclosure comprises a compression cylinder () accommodating a compression piston (), a combustion cylinder () accommodating a combustion piston (), a recuperator () arranged to exchange heat between exhaust fluid () from the combustion cylinder and working fluid being supplied from the compression cylinder to the combustion cylinder via a crossover passage (). A controller is configured to control operation of the engine based on an indication of a temperature of at least one of a material of the recuperator and the working fluid in the crossover passage.