In The Garage with CarParts.com EVs and Hybrids SOHC vs. DOHC: What's the Difference and Which Is Better? How Camshafts and Valves Work What are the Different Camshaft Location Classifications? What is an SOHC Engine? What is a DOHC Engine? Which is Better: SOHC or DOHC? SOHC vs. DOHC Fuel Efficiency Whereas OHC engines can use anywhere from 2 valves per cylinder to 5 (in super rare, when all the stars align on a blue moon), an OHV is limited to 2 valves per cylinder as there is no practical Three common types of camshaft engines are in popular use today and many are confused about what the differences are between them: OHV. SOHC. DOHC. All camshaft-type engines have three basic components in their heads which actuate the intake and exhaust for each cylinder: camshafts, rocker arms, and valves. The camshaft rotates in time with the This design applies to slower-speed engines. It involves many moving parts and results in sluggish engine response. However, the passenger cars needed refined high-speed engines. So, the engineers replaced this technology with a more sophisticated 'Over Head Camshaft' design mechanism or the OHC. What is OHC? Design and manufacturing costs are higher as well. Compared to SOHC designs, DOHC engines have a more complex chain or belt drive system. This decreases overall reliability and adds to maintenance expense. As with SOHC designs, DOHC engine height is increased and overall weight also tends to be higher. DOHC stands for dual overhead camshaft, which means that there are two camshafts in the cylinder head. Most modern motors fit into one of these categories. SOHC = Single Overhead Camshaft. DOHC = Dual Overhead Camshafts. There's more to evaluate aside from how many camshafts are in each cylinder head. .

dohc vs sohc vs ohv