MACHINE BODY AND MACHINERY

摘要

Provided is a machine body capable of preventing thermal decomposition of a liquid reducing agent in a reducing agent injector. The machine body includes an exhaust gas treatment device (24) that reduces nitrogen oxides in exhaust gas of an engine (21) provided within a machine room (19), and a reducing agent supplier (31) that supplies the liquid reducing agent to the exhaust gas treatment device (24). The exhaust gas treatment device (24) includes a reducing agent injector (28) that injects the liquid reducing agent supplied from the reducing agent supplier (31), and a cooling fan (35) that is installed in the vicinity of the reducing agent injector (28) so as to face the reducing agent injector (28). The cooling fan (35) performs cooling by blowing cooling wind of external air, which is taken in from the outside of the engine room (19), against the reducing agent injector (28) and its upstream side.