If you are a car or motorcycle enthusiast and among those prospective buyers, it is crucial to understand the differences between single overhead camshaft (SOHC) and double overhead camshaft (DOHC) engines. The terms refer to two different engine configurations that affect performance, efficiency, and maintenance. This guide will explore the key distinctions, helping you make an informed decision about your vehicle choice as you understand the difference between SOHC and DOHC.
Difference between SOHC and DOHC
Knowing the differences between DOHC and SOHC engines helps you decide on the engine type that best fits your demands from your vehicle. Let us have a look at the differences.
- Number of camshafts: A single overhead camshaft means the engine has one camshaft placed on the block above the head, which operates the intake and exhaust valves. DOHC engines have two camshafts for each bank of cylinders: the intake camshaft and the exhaust camshaft.
- Valve control: As for the valves, an SOHC engine opens and closes the intake and the exhaust with only one camshaft. A DOHC engine has two camshafts for the intake and exhaust valves, thus offering better valve timings than the SOHC engine.
- Valves per cylinder: SOHC engines may use two valves per cylinder for intake and only one for exhaust, which can compromise airflow at high speeds. Meanwhile, the DOHC has four valves, namely two intake valves and two exhaust valves per cylinder for increased airflow, making the engine perform relatively better.
- Design simplicity: The primary benefits of SOHC engines are their low manufacturing cost, while the single camshaft makes repairs easier. In comparison, DOHC engines are more complex and costlier as they include an additional camshaft to enhance performance.
- Weight and size: As SOHC engines are lighter in weight and smaller in size, they consume less fuel. DOHC engines are heavier and larger, given the presence of the additional camshaft. Moreover, SOHC engines are generally more compact, allowing for a smaller and lighter design.
- Performance: SOHC engines deliver reliable power but may struggle at high speeds from limited airflow. DOHC engines excel at higher speeds by allowing more efficient air movement, leading to more power and efficiency. Even so, SOHC engines have fewer moving parts, which can result in greater reliability and longevity.
- Maintenance and production costs: SOHC engines are cost-effective in terms of manufacturing and maintenance because of their simpler design and fewer parts. DOHC engines offer superior performance, given their dual camshafts, but are more expensive to build and repair.
Both engine types have their respective advantages; however, from an overall viewpoint, the SOHC engine configuration balances simplicity and efficiency. This is why it remains a popular choice for many automotive applications.
Conclusion
Thus, understanding SOHC vs DOHC engine differences is important if you call yourself an automotive enthusiast. Choosing between the two engine types depends on your driving needs and preferences. Whether you’re thinking about a new car or motorcycle or just looking to update your bike insurance, knowing these differences can make a big difference.
Disclaimer: The information provided in this blog is for educational and informational purposes only. It may contain outdated data and information regarding the Insurance industry and products. It is advised to verify the currency and relevance of the data and information before taking any major steps. ICICI Lombard is not liable for any inaccuracies or consequences resulting from the use of this outdated information.