Question: What Is Dohc Engine?

What does a DOHC engine mean?

Dual overhead cam engines are found in most modern vehicles today. They allow better airflow with less obstruction and are generally much more efficient engines than OHV or SOHC engines. Two camshafts operate 4 valves per cylinder, one separate camshaft for intake and exhaust valves.

Which is better SOHC or DOHC?

To sum it up, a 4 Valve per cylinder SOHC engine with a lighter valvetrain mass would have better performance characteristics at the lower end of the powerband. However, at higher engine speeds, a DOHC setup with its higher valvetrain mass and as many valves per cylinder will develop higher peak torque and horsepower.

What cars have DOHC engine?

Examples of DOHC engines:

  • Ford 3.5L EcoBoost V6 DOHC.
  • Ford Mustang Boss 302 5.0L DOHC V8.
  • Ford Mustang 5.2L V8 Supercharged.
  • BMW S65 DOHC V8.
  • Infiniti 3.0L VR30.
  • Mercedes-Benz Inline-6 DOHC engine.

Is DOHC better than VTEC?

Just wondering what are the main differences between DOHC vtec and SOHC i-vtec. Essentially speaking the biggest difference is the number of camshafts the engines have. DOHC engines are designed to rev higher, have peakier power outputs and PERHAPS high horsepower application.

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Dohc means duel overhead camshaft and VTEC is a technology for variable valve timing and electronic lift is a technology developed to control the lift of valves at different speeds.

Is VTEC only for Honda?

So yes, VTEC is Honda only and yes, there are other technologies that achieve the same, or very similar, goals.

Why does Honda still use SOHC?

SOHC engines are cheaper and less complicated to design, build and maintain because of the lesser moving parts, while DOHC are more complex to design build and repair because of the extra moving parts.

Can you convert SOHC to DOHC?

you can‘t convert a sohc motor to dohc period.

Is VVT the same as VTEC?

VVT and VTEC are the same thing. Honda name it differently for marketing purpose. VVT and VTEC are valve control system. So basically, they control the opening of engine valves depending on the power needed.

What is DOHC I VTEC?

DOHC i-VTEC is an “intelligent” engine that fuses world-class top fuel economy and cleaner emissions with high power and robust torque in all speed ranges. Designed for high efficiency and flexibility, the new line reduces the investment for new model introduction by half and can produce eight different engine types.

What is 16 valve DOHC engine?

An EFI 16valve DOHC is a four-cylinder engine with four valves per cylinder, dual overhead cam and electronic fuel injection. Most engines with these features have a displacement of 2.4 liters or less. The 16valve four-cylinder engines derived from earlier 8- and 12-valve four-cylinder engines.

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What does VTEC stand for?

The VTEC (Variable Valve Timing & Lift Electronic Control) system uses separate camshaft profiles for low and high-end performance, and the engine computer selects between profiles.

Is VTEC better than Turbo?

Turbo produces more torque and horsepower obviously while VTEC is more about pushing the maximum horsepower out of the engine since torque on VTEC cars can only be felt on VTEC range meaning anywhere after 5,500RPMs but yet the torque is still nothing compared with a turbo’s torque output.

Which is better i-VTEC or VTEC?

VTC is active at all RPMs. i-VTEC – intelligent Variable valve Timing and lift Electronic Control. This is a combination of both the VTEC and the VTC technologies – in other words, i-VTEC = VTEC + VTC. The only difference between this i-VTEC engine and the older VTEC engines is the addition of the VTC system.


VTEC is a Honda trademark, and SOHC is a single-cam engine (Single OverHead Cam). VTEC allows for higher power or better economy (and later, better inroads to a little bit of both) by allowing for different valve lift profiles based on ECU control (usually RPM and load, or other similar factors).

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