section_path: Job duties
section_name: Job duties
paragraph_text: Job duties
  
  Mechanical engineers research, design, develop, build, and test mechanical and thermal devices, including tools, engines, and machines.
  
  Mechanical engineers typically do the following:
  
  Mechanical engineers design and oversee the manufacturing of many products ranging from medical devices to new batteries. They also design power-producing machines such as electric generators, internal combustion engines, and steam and gas turbines as well as power-using machines, such as refrigeration and air-conditioning systems.
  
  Like other engineers, mechanical engineers use computers to help create and analyze designs, run simulations and test how a machine is likely to work.