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D. Hemi
Hemispherical, or Hemi, combustion chambers employ domed pistons. These pistons have a dome-shape on their tops, and they serve to increase the compression ratio achieved. Other types of pistons that are used in combustion engines are bowl and flat-top.
Hemispherical, or Hemi, combustion chambers employ domed pistons. These pistons have a dome-shape on their tops, and they serve to increase the compression ratio achieved. Other types of pistons that are used in combustion engines are bowl and flat-top.