| 摘要 |
<p>© A power steering system, particularly advantageous for use on electric powered vehicles, in which the hydraulic pump (14) operates only when steering commands are given. Torque applied to the steering shaft (20) by rotation of a steering wheel (not shown) is translated to axial stress on a thin walled tube (88), the direction and intensity of which depend on the direction and amount of steer angle change commanded. The axial stresses are detected by strain gauges (130, 132, 134, 136), and the motor which powers the hydraulic pump (14) is activated only when stress is detected. Manual steering inputs enter the pump (14) on one side, and the powered servo motor (12) inputs enter on the opposite side, thus permitting the vehicle to be steered by manual input alone if the powered input fails. The components of the system are arranged in coaxial alignment, providing a compact system with improved heat dissipation qualities.</p> |
