Patent ID: 6095115
Filing Date: 2000-08-01
Classification: F01L,F02D

Abstract:
Apparatus in a compression release engine retarder for limiting the travel of a slave piston in a slave piston cylinder, said slave piston having a head and a stem disposed thereon and said slave piston cylinder having a wall and being connected to a hydraulic circuit so that when hydraulic fluid passes through said wall of said slave piston cylinder at an upper end of said slave piston cylinder, said slave piston moves down along a longitudinal axis toward a lower end of said slave piston cylinder to actuate at least one engine valve, said apparatus comprising:a first aperture in said slave piston cylinder wall, said first aperture forming the entrance to a hydraulic fluid supply line;a second aperture in said slave piston cylinder wall, said second aperture forming the entrance to a hydraulic fluid return conduit;an internal passageway in said slave piston, said internal passageway providing communication between said hydraulic fluid supply line and said hydraulic fluid return conduit upon travel of said slave piston for a defined distance along said longitudinal axis of said slave piston cylinder; andan adjustable foot disposed on said slave piston stem for varying the length of said slave piston stem.