PISTON ASSEMBLY
First Claim
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1. A piston assembly, comprising:
- a piston crown, including a ring belt portion defining at least in part a cooling gallery, the crown including radially inner and outer crown mating surfaces; and
a piston skirt received in a central opening of the crown such that the crown and skirt cooperate to form an upper combustion bowl surface, the skirt including a radially inner skirt mating surface abutted along a radially inner interface region with the radially inner crown mating surface, the skirt including a radially outer skirt mating surface abutted along a radially outer interface region with the radially outer crown mating surface such that the cooling gallery is substantially enclosed.
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Abstract
An exemplary piston assembly and method of making the same are disclosed. A piston assembly may include a piston crown and piston skirt. The crown may include a ring belt portion defining at least in part a cooling gallery, as well as radially inner and outer crown mating surfaces. The skirt may be received in a central opening of the crown such that the crown and skirt cooperate to form an upper combustion bowl surface. The skirt also may include radially inner and outer skirt mating surfaces that are abutted with the inner and outer crown mating surfaces, respectively, such that the cooling gallery is generally enclosed by the skirt.
34 Citations
20 Claims
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1. A piston assembly, comprising:
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a piston crown, including a ring belt portion defining at least in part a cooling gallery, the crown including radially inner and outer crown mating surfaces; and a piston skirt received in a central opening of the crown such that the crown and skirt cooperate to form an upper combustion bowl surface, the skirt including a radially inner skirt mating surface abutted along a radially inner interface region with the radially inner crown mating surface, the skirt including a radially outer skirt mating surface abutted along a radially outer interface region with the radially outer crown mating surface such that the cooling gallery is substantially enclosed. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method, comprising:
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providing a piston crown including a ring belt portion defining at least in part a cooling gallery, the piston crown including radially inner and outer crown mating surfaces; receiving a piston skirt in a central opening of the crown such that the crown and skirt cooperate to form a continuous upper combustion bowl surface having a radially inner portion defined by the skirt and a radially outer portion defined by the crown, the piston skirt including radially inner and outer skirt mating surfaces; and abutting the skirt to the crown along the corresponding radially inner and outer mating surfaces of the skirt and crown such that the skirt and crown are abutted along a radially inner interface region including the radially inner mating surfaces of the crown and skirt and the skirt and crown are abutted along a radially outer interface region including the radially outer mating surfaces of the crown and skirt, the skirt thereby generally enclosing the cooling gallery. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification