How many types are steering systems classified by energy source?

[Lucille]

Automotive steering systems are classified into two types based on the source of steering energy: mechanical steering systems and power steering systems. Introduction to mechanical steering systems: Mechanical steering systems use the driver's physical strength as the steering energy source, hence they are also called manual steering systems. They consist of three main components: the steering control mechanism, the steering gear, and the steering linkage. The steering gear is typically fixed to the vehicle frame or body, and the steering force usually changes direction after passing through the steering gear. Introduction to power steering systems: Power steering systems convert part of the engine's mechanical energy into pressure energy (hydraulic or pneumatic energy). Under the driver's control, this system applies hydraulic or pneumatic forces in different directions to the steering linkage or a specific component in the steering gear to reduce the driver's steering effort. This system is called a power steering system.