What is the definition of vteck and what is its' purpose?

Question

specific explination please

Answer 1

v-tech is honda's brand of variable valve timing (other manufacturers offer similar technology under different names) Basically, in an engine the cam shaft controls when the engine valves open and close. Very aggressive lobes on a cam shaft allow for more power but the car will idle very poorly and gas mileage is reduced - generally, racing style camshafts are not good for daily drivers. Normal camshafts run smoothly day to day but don't allow for maximum power. Variable timing systems basically have a double lobes on the camshaft. At low engine RPMs, the normal camshaft is used but at higher RPM it switches to the aggressive cam lobes to maximize power.

The results is a good balance of power, driveability and fuel economy.

Answer 2

The idea behind Honda/Acura's VTEC is to optimize high and low speed performance potential of its engines by varying the valve timing, duration and lift. Valve events are determined by the camshaft lobes. A non-VTEC engine has a cam(s) with one profile that is selected to be a compromise between power and economy. VTEC engines use special camshafts with two cam profiles that are individually selected depending on need. For low speed, low rpms, the more conservative profile is in play. For power situations the more radical profile is activated. VTEC continues to evolve into greater use of electronic control and expanding to use of this technology on exhaust valves.

My '96 Acura Integra GS-R used an early version of VTEC. It was fast and economical - the VTEC advantage was noticeable.

Answer 3

VTEC: Means Variable Valve Timing and Lift Electronic Control. Basically this gives you more power at approximately 4000 rpms.