Piston ring assembly
AssigneeMahle International GmbH
InventorsRui Moreira, Marcelo Simoes, Joao Abreu, Juliano Avelar Araújo, Guilherme Pinto
Life of this patent
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Abstract
A piston ring assembly includes a first annular ring element having a first gap. The piston ring assembly further includes a second annular ring element having a second gap. The first annular ring element is located above the second annular ring element and is contacting the second annular ring element such that the first gap and the second gap are out of alignment. The first annular ring element has a first radial outer face with a first outer radius and the second annular ring element has a second radial outer face with a second outer radius such that the second outer radius is greater than or equal with the first outer radius.
Claims20
A piston ring assembly comprising:
- a first annular ring element having a first gap;
- and
- a second annular ring element having a second gap,
- wherein the first annular ring element is located above the second annular ring element and is contacting the second annular ring element such that the first gap and the second gap are out of alignment,
- wherein the first annular ring element has a first radial outer face with a first outer radius and the second annular ring element has a second radial outer face with a second outer radius such that the second outer radius is greater than or equal with the first outer radius.
A piston comprising:
- a piston body having at least one circumferential groove and at least one piston ring assembly arranged in the at least one circumferential groove,
- wherein the piston ring assembly comprises:
- a first annular ring element having a first gap;
- and
- a second annular ring element having a second gap,
- wherein the first annular ring element is located above the second annular ring element and is contacting the second annular ring element such that the first gap and the second gap are out of alignment, and
- wherein the first annular ring element has a first radial outer face with a first outer radius and the second annular ring element has a second radial outer face with a second outer radius such that the second outer radius is greater than or equal with the first outer radius.
An internal combustion engine comprising:
- at least one piston, the at least one piston comprising:
- a piston body having at least one circumferential groove;
- and
- at least one piston ring assembly arranged in the at least one circumferential groove,
- wherein the at least one piston ring assembly comprises:
- a first annular ring element having a first gap;
- and
- a second annular ring element having a second gap,
- wherein the first annular ring element is located above the second annular ring element and is contacting the second annular ring element such that the first gap and the second gap are out of alignment, and
- wherein the first annular ring element has a first radial outer face with a first outer radius and the second annular ring element has a second radial outer face with a second outer radius such that the second outer radius is greater than or equal with the first outer radius.
Dependencies are inferred from the claim text.