engine block

Thân thiện

The mechanic inspects the cracked engine block on the workbench.

Definition

1. Noun:
   • The main structural component of an internal combustion engine: An "engine block" is a large, solid metal casting that forms the foundation of an engine. It houses the cylinders, where the pistons move, and contains passages (cooling ducts) for coolant to circulate and regulate the engine's temperature. It is also known as a cylinder block.

Usage

• The "engine block" is a critical, stationary part of an engine assembly. It is the central frame to which other components like the cylinder head, crankshaft, and oil pan are attached.
• It is typically made of cast iron or aluminum alloy for strength and heat dissipation.

Examples

Advanced Usage

• "Block" as shorthand: In automotive contexts, "block" is often used alone to refer to the engine block.
  • The classic car's block was still in perfect condition.

Variants and Related Words

• Cylinder block: A direct synonym for "engine block."
• Short block: An engine assembly that includes the engine block with the crankshaft and pistons installed, but not the cylinder head, oil pan, or other external components.
• Long block: A more complete engine assembly than a short block, typically including the cylinder head(s), camshaft, and valve train installed on the engine block.

Synonyms

• Cylinder block
• Motor block (less common)

Related Terms (Not Phrasal Verbs or Idioms)

• Cylinder head: The detachable part that seals the top of the cylinders and contains the combustion chambers, valves, and spark plugs. It is bolted onto the engine block.
• Crankcase: The lower section of the engine block that surrounds and supports the crankshaft.

Học thuật

Noun

1. a metal casting containing the cylinders and cooling ducts of an engine
   • the engine had to be replaced because the block was cracked

Từ đồng nghĩa

• cylinder block
• block