Engine retarder with reset auto-lash mechanism

Patent · Tue Nov 17 04:00:00 EST 1987

OSTI ID:5684518

Meistrick, Z S; Price, R B

This patent describes an engine retarding system of a gas compression release type including an internal combustion engine having exhaust valve means and pushtube means, hydraulic pressure supply means, hydraulically actuated first piston, and second piston means actuated by the pushtube means and hydraulically interconnected with the first piston means. The improvement comprises fluid passageway means formed through the first piston means between the high and the low pressure sides, reset valve means positioned substantially within the adjustable stop means for reciprocating motion. The reset valve means has a valve face formed on one end thereof and adapted to seat against the high pressure side of the first piston means thereby sealing the fluid passageway means, first biasing means adapted to bias the reset valve means toward the first piston means, second biasing means adapted to bias the reset valve means away from the first piston means when the first piston means approaches its second position, third piston means mounted within the reset valve means for reciprocating motion therewith and movable between first and second positions. The first biasing means are also adapted to bias the third piston means toward the second position of the third piston means. The third piston means have passageway means formed therethrough, and check valve means located in the passageway means of the third piston means and adapted to hydraulically lock the third piston means in the second position.

• Assignee: Jacobs Manufacturing Co., Bloomfield, CT
• Patent Number(s): US 4706625
• OSTI ID: 5684518
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330100* -- Internal Combustion Engines
AUTOMATION
COMPRESSED GASES
COMPRESSION
CONTROL
CONTROL EQUIPMENT
ENGINES
EQUIPMENT
EXHAUST SYSTEMS
FLOW REGULATORS
FLUID MECHANICS
FLUIDS
GASES
HEAT ENGINES
HYDRAULICS
INTERNAL COMBUSTION ENGINES
MECHANICS
OPERATION
PISTONS
PRESSURE CONTROL
VALVES