Process and apparatus for compression release engine retarding producing two compression release events per cylinder per engine cycle

Patent · Tue Feb 25 04:00:00 EST 1986

OSTI ID:5761818

Sickler, K H

A process is described for compression release retarding of a cycling multi-cylinder four cycle internal combustion engine having a crankshaft and an engine piston operatively connected to the crankshaft for each cylinder thereof and having intake and exhaust valves for each cylinder thereof. An engine retarding system of a gas compression release type is also described comprising a multi-cylinder four cycle internal combustion engine having a crankshaft and a camshaft driven in synchronism with the crankshaft, engine piston means associated with the crankshaft, exhaust valve means and intake valve means associated with each cylinder of the engine. It also includes first and second pushtube means driven from the camshaft, hydraulic fluid supply means, hydraulically actuated first piston means associated with the exhaust valve means to open the exhaust valve means. Second piston means are actuated by the first pushtube means and hydraulically interconnected with the first piston means and the hydraulic fluid supply means to open the exhaust valve means during an upstroke of the engine piston associated with the exhaust valve means corresponding to its compression stroke during normal operation of the engine to produce a first compression release event.

• Assignee: Jacobs Mfg. Co., Bloomfield, CT
• Patent Number(s): US 4572114
• OSTI ID: 5761818
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330100* -- Internal Combustion Engines
COMPRESSION
CONTROL EQUIPMENT
CONTROL SYSTEMS
CYLINDERS
ELECTRONIC EQUIPMENT
ENGINES
EQUIPMENT
EXHAUST SYSTEMS
FLOW REGULATORS
FLUIDS
HEAT ENGINES
HYDRAULIC CONTROL DEVICES
INTERNAL COMBUSTION ENGINES
PISTONS
VALVES
WORKING FLUIDS