four-cylinder engine

Summary

four-cylinder engine is an engine configuration^[1].

Key Facts

• four-cylinder engine's instance of is recorded as engine configuration^[2].
• four-cylinder engine's subclass of is recorded as multi-cylinder engine^[3].
• four-cylinder engine's Commons category is recorded as Engines with 4 cylinders^[4].
• four-cylinder engine's number of cylinders is recorded as {'unit': '1', 'amount': '+4'}^[5].