Piston and piston ring for an internal combustion engine

Patent · Tue Oct 04 04:00:00 EDT 1988

OSTI ID:6629788

Tokoro, N

This patent describes internal combustion engine comprising: a cylinder block having at least one cylinder bore, the cylinder bore having an inner cylinder bore surface; a piston located within the cylinder bore of the cylinder block, so as to be displaceable upwardly and downwardly in the longitudinal direction of the cylinder bore, the piston including at least one annular groove having upper and lower surfaces, at least the lower surface being an inclined surface such that a bottom of the annular groove is lower than an outer edge of the annular groove; and a piston ring including an outer peripheral portion and an inner peripheral portion, the inner peripheral portion of the piston ring being located within the annular groove of the piston for sliding engagement with the inclined surface of the annular groove of the piston, and inner edge of the inner peripheral portion of the piston ring being located apart from the bottom of the annular groove of the piston and below the outer edge of the annular groove, and the outer peripheral portion of the piston ring being in contact with the cylinder bore surface of the cylinder block.

• Assignee: Toyota Jidosha Kabushiki Kaisha, Aichi
• Patent Number(s): US 4774917
• OSTI ID: 6629788
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330100* -- Internal Combustion Engines
CYLINDERS
DESIGN
ENGINES
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
PISTONS
RINGS