Piston bearing assembly for an opposed-piston engine
AssigneeGeneral Atomics Aeronautical Systems, Inc.
InventorRyan G. Mackenzie
Life of this patent
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Abstract
A piston for an opposed-piston, internal combustion engine includes a crown with an end surface shaped to form a combustion chamber with an end surface of an opposing piston in the opposed-piston engine, a skirt part including a piston sidewall extending from the crown to an open end of the skirt part, a wristpin bore with first and second openings through the sidewall, a wristpin disposed in the wristpin bore, and at least two caps received in the first and second openings of the wristpin bore for sealing the wristpin bore and retaining the wristpin against axial movement.
Claims18
A piston for an opposed-piston engine, comprising:
- a crown with an end surface that includes means for forming an opposed-piston engine combustion chamber with an adjacent end surface of an opposing piston;
- a skirt including a sidewall extending from the crown to an open end of the skirt;
- a wristpin bore with first and second openings through the sidewall, in which the first opening is formed in a first pin boss in a first longitudinal recess of the sidewall and the second opening is formed in a second pin boss in a second longitudinal recess of the sidewall, the openings being coaxially aligned along a common axis;
- a wristpin including ends received in the first and second openings for supporting the wristpin in the wristpin bore;
- and,
- means for sealing the first and second openings through the sidewall and retaining the wristpin against axial motion in the wristpin bore.
A piston for an opposed-piston engine, comprising a crown with end surface means for forming a combustion chamber with an end surface of another piston in a cylinder of the opposed-piston engine, a skirt comprising a sidewall extending from the crown, a wristpin with opposing ends, means for supporting the wristpin with the ends disposed in opposing openings formed in the sidewall, a pair of caps with circular peripheries receivable in the openings, the caps being of such a shape as to seal the openings in the sidewall and to secure the wristpin axially.
An opposed-piston engine comprising a pair of pistons disposed for forming a combustion chamber in a ported cylinder of the engine, in which each piston comprises a pair of opposing wristpin bore openings formed through a skirt of the piston and aligned coaxially on a bore axis, a wristpin with ends disposed in the wristpin bore openings, and means for sealing the wristpin bore openings and securing the wristpin against axial movement.
Dependencies are inferred from the claim text.