Reciprocating piston internal combustion engine

Patent · Tue Apr 15 04:00:00 EST 1986

OSTI ID:5745686

Hayashi, Y

A reciprocating piston internal combustion engine is described which consists of: a piston movably disposed within an engine cylinder, the piston having a top surface and a piston ring, the engine cylinder and the top surface of the piston defining a combustion chamber, the piston having first and second sections which are divided by a vertical plane containing an axis of a piston pin, the first section being formed with a major thrust surface and the second section being formed with a minor thrust surface; and means for thrusting the piston against a major thrust side wall of the cylinder before the piston reaches top dead center in the cylinder, the thrusting means comprising: means defining a space in the piston, the space communicating with the combustion chamber and being located in the piston second section; a movable member disposed within the space, the movable member being capable of being thrust in the direction of a minor thrust side wall of the cylinder by gas pressure within the combustion chamber and being arranged to thrust the piston ring against the minor thrust side wall when thrust by the gas pressure; and means for producing gas pressure within the combustion chamber such that the gas pressure enters the space at the compression stroke of the engine so that the movable member receives the gas pressure and is thrust toward the minor thrust side wall of the cylinder such that the piston is thrust against a major thrust side wall of the cylinder.

• Assignee: Nissan Motor Co., Ltd., Yokohama
• Patent Number(s): US 4581982
• OSTI ID: 5745686
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330100* -- Internal Combustion Engines
COMBUSTION CHAMBERS
COMPRESSION
CYLINDERS
DESIGN
ENGINES
FLUID FLOW
GAS FLOW
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
PISTONS
PRESSURE EFFECTS
WALLS