If you're new here, you may want to subscribe to my RSS feed. Thanks for visiting!
The Honda i-VTEC system was the first update to the original VTEC system of continuously variable camshaft timing on the intake cam of DOHC VTEC Honda engines. The technology (VTEC) was first introduced on Honda’s K-series four cylinder engine family in 2002. Valve lift and duration are still limited to distinct low and high rpm profiles, but the intake camshaft is now capable of advancing between 25 and 50 degrees (depending upon the model of car it is in) during operation. Timing changes are implemented by a computer controlled, oil driven adjustable cam gear. Timing is determined by a combination of engine load and rpm, ranging from fully retarded at idle to maximum advance at full throttle and low rpms. The effect is further optimization of torque output, especially at low and mid-range RPMs.
In 2004, Honda introduced the updated version of the i-VTEC V6 but in this case, i-VTEC had nothing do to with cam timing. Instead, i-VTEC referred to Honda’s cylinder rotation technology which closes the valves on one bank of (3) cylinders during light load and low speed (below 80 mph) operation. The technology was originally introduced to the US on the Honda Odyssey, and can now be found on the Honda Accord Hybrid and the 2006 Honda Pilot. An additional version of i-VTEC was introduced on the 2006 Honda Civic’s R-series four cylinder engine. This implementation uses very small valve lifts at low rpm and light loads, in combination with large throttle openings, to improve fuel economy by reducing system fuel losses.
With the continued introduction of vastly different i-VTEC systems, one may assume that the term is now a catch all for creative valve control technologies from Honda.
To simplify the terms, the computer uses input signals from sensors which monitor every function of the engine. It then micro-adjusts through the main ECM every facet of valve timing to suit the exact situation the engine may be in. Subtle, yet effective these systems further improve the efficiency of the original V-TEC system.
Most of this information is technical and probably not an issue if you need to purchase a replacement engine. Yet it has importance for many people interested in some of the technological changes which occur as generations of cars become more advanced. With your VIN handy you need not know any more about your engine, if an engine failure occurred and you were more perplexed who has Got Engines you can trust that are exactly what they claim to be, than the engine technical specifications side, trust GotEngines.com @ 1-877-268-0664.
Trust that has been built by outperforming every other supplier by supplying the information you need and the product to back it up. Guaranteed. Examine our GotEngines.com Blog for more technical information if you enjoy cars.
