Power steering for motor vehicles

摘要

The power steering has a limiting piston (51) which is acted upon by a second limiting spring (52). The spring, in the neutral position, holds the limiting piston out of engagement with the closure body (33) of the outlet seat valve (27). The limiting piston (51) acts upon the closure body of the outlet seat valve, only when the force of the effective pressure on the piston exceeds the force of the limiting spring (52). The effective cross-section of the limiting piston is smaller than that of the closure body of the outlet seat valve.