Car engines along with the other car parts are evolving with time, thanks to the rapid advancement in technology. Different engine types have also emerged over the years. When it comes to camshaft engines, there are two main types: SOHC and DOHC.
Here is a detailed comparison of SOHC vs DOHC for you to find out what they mean, how they work and which one is better.
SOHC and DOHC Meaning
Before we understand the differences between SOHC and DOHC and decide which one is better, we need to know what these engines are.
What is an SOHC Engine?
SOHC is an abbreviation of Single Overhead Camshaft. This means only one cam rod operating both the intake and exhaust valves. Therefore, as the name suggests, a single camshaft is located in the head.
If you decide to go with SOHC, check out these cars using this kind of engine:
What is a DOHC Engine?
DOHC stands for Double or Dual Overhead Camshaft as it has two cams located overhead. It operates for various intake and exhaust valves since each header has two camshafts. Therefore, there will be 2 cams in an inline engine because it has only one while V-engine and flat engines will have 4 cams as they have two headers,
Usually, the DOHC engine comes in 4 valves with one camshaft for the intake valves while the remaining for the exhaust valves. Here are the listings for some popular cars with DOHC engine:
DOHC or SOHC – Which is better?
Both SOHC and DOHC have their own set of unique features that often have certain advantages. Here are a few key differences and their respective advantages to help you decide between SOHC and DOHC.
1. Function
In case of SOHC, a single camshaft regulates both inlet and outlet of gases while DOHC being a dual cam assembly offers separate inlet and outlet. Also, the exhaust valves in DOHC are double compared to SOHC.
Therefore, DOHC is likely to offer a cooler engine in comparison to SOHC offering a peaceful, efficient and smooth ride.
2. Fuel Efficiency
When it comes to DOHC or SOHC fuel efficiency, an SOHC engine takes the lead. The reason is DOHC has a dual setup for each valve. This means more power consumption, hence less fuel efficiency. However, even with a DOHC engine, fuel efficiency of an engine can be improved by adopting fuel-efficient practices.
3. Valve Timing
In terms of valve timing, a DOHC is more flexible than an SOHC. DOHC with its multiple valves allow for better optimization of gas intake and outtake timing. Furthermore, DOHC offers more horsepower too.
4. Price
Since an SOHC is only a single rod assembly regulating the exit and intake of gases, it offers more affordability over the DOHC. The latter has a more distinct process for both the incoming and outgoing of gases.
This is all about SOHC vs DOHC comparison. Now that you know the differences and advantages of both, it can be another factor to consider when comparing cars to buy. Browse through this wide collection of used cars for sale in the UAE to find the vehicle with the right kind of engine. Learn more about your car engine by finding out all about car timing belt.
For more information about car engines, its working and types, stay tuned to the UAE’s top auto blog.
Related Posts
