What is a DOHC engine?

[EmilyLynn]

DOHC engine stands for Double Overhead Camshaft engine, where the intake and exhaust valves are arranged on two separate camshafts. Advantages include: higher performance, better stability, lower noise levels. Due to the complex manufacturing process, the cost is higher. Multi-valve engines allow for more complete combustion, enabling more fresh air to enter the engine, resulting in better emission efficiency. Additional information: 1. DOHC engines generally have higher torque and power compared to regular engines. The pistons are also different from those in conventional engines, as they need to be stronger to maintain normal engine operation. 2. The function of the camshaft is to mechanically coordinate the opening and closing actions of the intake and exhaust valves. SOHC refers to the situation where a single camshaft completes the opening and closing actions for both intake and exhaust valves, while DOHC uses two separate camshafts to independently control the intake and exhaust valves for their respective opening and closing actions.