OUTPUT CONTROLLER FOR STIRLING ENGINE

An output controller for a stirling engine is provided in a cooling system 1A that causes common cooling water to flow through both the stirling engine 20 and an internal combustion engine 10 serving as a motive power source other than the stirling engine 20. The output controller for the stirling engine includes a temperature adjustment portion that adjusts a temperature of the cooling water supplied to the stirling engine 20. Specifically, the temperature adjustment portion includes a temperature adjustment valve 34 capable of adjusting the temperature of the cooling water supplied to the stirling engine 20 by switchably setting at least one of partial cooling paths L1 and L2 into a communication state.