Technician A says that the general operating principles of Caterpillar and Siemens built HEUIs are identical. Technician B says that the Siemens HEUI is smaller and lighter than the Caterpillar equivalent. Who is correct?

Question

Quizplus · Accepted Answer

Both technicians are correct. The general operating principles of Hydraulic Electronic Unit Injectors (HEUI) built by Caterpillar and Siemens are indeed identical, as they both use oil pressure to control fuel injection in a precise manner. Technician B is also correct in stating that the Siemens HEUI is generally smaller and lighter than the Caterpillar equivalent, reflecting differences in design and application focus between the two manufacturers.

Technician a Says That the General Operating Principles of Caterpillar