Two-cycle engine

Patent · Tue Jun 16 04:00:00 EDT 1987

OSTI ID:6429327

Hiasa, T; Uchida, H

This patent describes a two-cycle engine comprising: a cylinder block including a cylinder having an axis, and an exhaust port formed in a side wall of the cylinder; a piston received in the cylinder for reciprocal movement along the axis of the cylinder for closing and opening the exhaust port; and port timing control means for varying a time of the opening of the exhaust port by the piston. The port timing control means comprises a pair of first and second valves movable along respective straight path disposed generally perpendicular to the axis of the cylinder into and out of respective closed positions where the first and second valves cooperate with each other to close part of the exhaust port; power transmission means; drive means for driving the first and second valves to move into and out of their respective closed positions in accordance with a speed of the engine through the power transmission means; the power transmission means comprises a pair of first and second shafts mounted on the cylinder block for angular movement about their respective axes disposed generally parallel to the axis of the cylinder. Each of the shafts has a pinion portion; a rack rod disposed generally perpendicular to the shafts and being movable along an axis.

• Assignee: Honda Giken Kogyo Kabushiki Kaisha
• Patent Number(s): US 4672924
• OSTI ID: 6429327
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330100* -- Internal Combustion Engines
330602 -- Vehicle Design Factors-- Engine-Transmission Matching
CONTROL EQUIPMENT
CYLINDERS
DESIGN
ENGINES
EQUIPMENT
EXHAUST SYSTEMS
FLOW REGULATORS
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
MACHINE PARTS
MECHANICAL TRANSMISSIONS
OPERATION
PISTONS
RODS
TIMING PROPERTIES
VALVES
VELOCITY