Variable compression ratio direct injection engine

Patent · Tue Oct 17 04:00:00 EDT 1989

OSTI ID:7259348

Ryan, III, T W; Maymar, M J; Anderson, O M

This patent describes a compression ignition engine. The engine having a crankcase, crankshaft, a counterbalance case and flywheel, and connecting rod and piston assembly, a cylinder liner, and a cam shaft. It comprises a holder for supporting the cylinder liner; a head assembly connected to the holder, the head assembly including valve means; means for alternately raising or lowering the cylinder liner relative to the crankshaft, thereby varying the compression ratio of the engine; and means for maintaining a substantially constant valve timing relationship as the cylinder liner is raised or lowered. The means for maintaining a substantially constant valve timing relationship comprising a timing shaft and a hinged linkage mechanism in operative engagement with the timing shaft and the cam shaft.

• Assignee: Southwest Research Institute, San Antonio, TX
• Patent Number(s): US 4873947
• Application Number: PPN: US 7158317A
• OSTI ID: 7259348
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330100* -- Internal Combustion Engines
330500 -- Advanced Propulsion Systems-- Flywheel Propulsion
COMPRESSION RATIO
CONTROL EQUIPMENT
DESIGN
ENGINES
EQUIPMENT
FLOW REGULATORS
FLYWHEELS
FUEL INJECTION SYSTEMS
FUEL SYSTEMS
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
MECHANICAL ENERGY STORAGE EQUIPMENT
VALVES