The engineering design process is a multi-step process including the research, conceptualization, feasibility assessment, establishing design requirements, preliminary design, detailed design, production planning and tool design, and finally production.

Basically there are seven phases of  ED as follows:

Phase 1: Conceptual Design

Phase 2: Embodiment Design

Phase 3: Detail Design

Phase 4: Planning for Manufacture

Phase 5: Planning for Distribution

Phase 6: Planning for Use

Phase 7: Planning for Product Retirements