What is a Horizontally Opposed Engine?

1 Answers
EmmettFitz
07/30/25 10:28am
Horizontally opposed engine refers to an engine where the pistons are evenly distributed on both sides of the crankshaft and move horizontally left and right. The horizontally opposed engine reduces the overall height and length of the engine, lowers the center of gravity of the vehicle, making the driving more stable. The engine is installed on the central axis of the vehicle, and the torque generated by the pistons on both sides cancels each other out, greatly reducing the vibration during driving, allowing the engine speed to be significantly increased and noise to be reduced. The horizontally opposed engine is also known as an H-type engine and is a type of V-engine. Vehicles equipped with horizontally opposed engines include Subaru and Porsche.
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