Air-scavenged two-cycle internal combustion engine

Patent · Tue Jul 08 00:00:00 EDT 1986

OSTI ID:5550465

Poehlman, A G

A two-cycle internal combustion engine is described comprising a crankcase including a rotatable crankshaft, a cylinder extending from the crankcase and including a combustion chamber having a head end, an exhaust port in the cylinder communicating with the combustion chamber, a fuel intake port in the cylinder communicating with the combustion chamber, an air intake port in the cylinder communicating with the combustion chamber at a location closer to the exhaust port than the fuel intake port, a piston operably connected to the crankshaft and mounted for reciprocative movement in the cylinder through a compression stroke to cover all of the ports and through an expansion stroke to uncover all of the ports, an air inlet in the crankcase, a fuel inlet in the crankcase, dividing means located interiorly of the crankcase and defining an air crankcase portion which communicates with the crankcase air inlet and with the air intake port and further defining a separate fuel crankcase portion which communicates with the crankcase fuel inlet and with the fuel intake port, means for admitting a fuel-air mixture into the crankcase fuel inlet, and means for admitting air into the crankcase air inlet.

• Assignee: Outboard Marine Corp., Waukegan, IL
• Patent Number(s): US 4598673
• OSTI ID: 5550465
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330100* -- Internal Combustion Engines
AIR FLOW
COMBUSTION CHAMBERS
COMPRESSION
CYLINDERS
DESIGN
DISPERSIONS
ENGINES
EXHAUST SYSTEMS
EXPANSION
FLUID FLOW
FUEL-AIR RATIO
GAS FLOW
HEAT ENGINES
INTAKE STRUCTURES
INTERNAL COMBUSTION ENGINES
MACHINE PARTS
MECHANICAL STRUCTURES
MIXTURES
MOTION
PISTONS
ROTATION
SHAFTS