The advantages of a Dual Overhead Cam (DOHC) engine over a Single Overhead Cam (SOHC) engine can be significant in certain applications, but whether they justify the complications in non-sporting vehicles depends on several factors.
DOHC engines have separate camshafts for the intake and exhaust valves, which allows for more precise control over valve timing and lift. This generally results in better performance and efficiency at higher engine speeds. DOHC engines are often found in high-performance sports cars and motorcycles where achieving maximum power output is crucial.
On the other hand, SOHC engines have a single camshaft that operates both the intake and exhaust valves. While they may not offer the same level of performance as DOHC engines, they are generally simpler and less expensive to manufacture. SOHC engines are commonly used in a wide range of vehicles, including sedans, SUVs, and everyday commuter cars.
For non-sporting vehicles, where maximum power output is not the primary concern, the benefits of DOHC engines may not outweigh the added complexity and cost. SOHC engines can still provide adequate performance and efficiency for everyday driving. Additionally, SOHC engines may be more compact, lighter, and easier to maintain.
Ultimately, the choice between a DOHC and SOHC engine depends on the specific requirements of the vehicle and the desired balance between performance, cost, and simplicity.