Control system for an axial piston machine

Claim 1

An axial piston machine comprising: a housing; an axial-piston arrangement in said housing and having an output; a pivotal member in said housing engaging said axial piston arrangement for controlling said output; an input lever externally of said housing and swingable to control the position of said pivotal member; a first shaft extending through a wall of said housing and engaging said input lever while being rotatable thereby about a first fixed axis; a cam affixed to said first shaft within said housing for rotation about said first fixed axis with said first shaft, said cam having a noncircular surface; a cam follower in said housing engaging said surface; a transmission lever within said housing including a first arm carrying said cam follower, a second shaft rotatable in said housing about a second fixed axis, and a second arm carried by said second shaft; a linearly shiftable pilot piston in said housing engaged by said second arm for displacement in accordance with a predetermined response characteristic upon displacement of said input lever; a follower piston fluid coupled with said pilot piston and responding to the displacement thereof for a following displacement; and means connecting said follower piston to said pivotal member.