Which are the two materials used in a bimetallic piston?(a) Copper and steel(b) Magnesium and aluminum(c) Steel and cast iron(d) Aluminum and steelI got this question in a job interview.The query is from Engine Components topic in section Basic Engine Components of Automotive Engine Design

Which are the two materials used in a bimetallic piston?(a) Copper and

1.	Which are the two materials used in a bimetallic piston?(a) Copper and steel(b) Magnesium and aluminum(c) Steel and cast iron(d) Aluminum and steelI got this question in a job interview.The query is from Engine Components topic in section Basic Engine Components of Automotive Engine Design
Answer» The correct answer is (d) Aluminum and steel Easiest explanation: The bi-metal piston is MADE from both steel and aluminum. The skirt is formed by steel and the aluminum ALLOY cast inside of FORMS piston head and piston pin bosses. As the coefficient of thermal expansion for steel is quite small, the piston will not expand and HENCE smaller cold clearance can be maintained.

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Which are the two materials used in a bimetallic piston?(a) Copper and steel(b) Magnesium and aluminum(c) Steel and cast iron(d) Aluminum and steelI got this question in a job interview.The query is from Engine Components topic in section Basic Engine Components of Automotive Engine Design

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