Cooling system for a two stroke engine

Patent · Tue Apr 12 04:00:00 EDT 1988

OSTI ID:5071903

Ohyama, K

In combination, a cylinder defining a combustion chamber for a two-stroke internal combustion engine, a piston reciprocable in the cylinder, at least two mutually opposed transfer ports and at least one exhaust port circumferentially spaced from the transfer ports penetrating the wall of the cylinder to communicate with the combustion chamber, and a liquid coolant conducting system in the wall of the cylinder for cooling the cylinder is described comprising: a first coolant passage directly below the exhaust port and extending transversely thereof; second coolant passages directly below the transfer ports and extending transversely thereof; means defining a coolant jacket concentrically about the cylinder wall effective to the cool the piston throughout the full stroke thereof; upwardly extending laterally spaced coolant passages on opposite sides of the exhaust port connecting the first coolant passage and the coolant jacket; a pair of coolant inlets communicating with the first coolant passages closely adjacent the upwardly extending coolant passages for directing coolant supplied to the system divergently to the upwardly extending coolant passages and the first coolant passage; and at least one coolant outlet from the top of the coolant jacket.

• Assignee: Honda Giken Kogyo Kabushiki Kaisha, Tokyo
• Patent Number(s): US 4736716
• OSTI ID: 5071903
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330100* -- Internal Combustion Engines
COOLANTS
COOLING SYSTEMS
DESIGN
DUCTS
ENERGY SYSTEMS
ENGINES
FLUID FLOW
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
LIQUID FLOW
OPERATION
SLEEVES