With the VTEC (Variable Valve Timing & Lift Electronic Control) technology, the engine computer switches between several camshaft profiles for low- and high-end performance.
In This Article...
What distinguishes the VTEC and i-VTEC engines?
Honda added i-VTEC, which effectively stands for Intelligent VTEC, for you if variable valve timing wasn’t hard enough before. Since its introduction in Honda vehicles in 2001, almost all of their performance engines have utilised it.
The above-mentioned architecture is used in conventional VTEC engines. Only the lift and duration offered by the two distinct camshaft lobes or profiles can be controlled by this technique. In order to have better control over valve timing, Honda created and combined what is known as i-VTEC, or VTC with VTEC.
Variable timing control (VTC) allows the camshaft to be advanced or retracted in order to manage valve overlap. The exhaust valve never opened and closed simultaneously in conventional VTEC engines because the intake valve always opened first. With VTC, the camshaft lobe angles can be adjusted to allow the valves to overlap or open simultaneously. It can be altered at various RPM levels due to its changeable nature.
So, What’s the Difference Between VTEC and i-VTEC?
By allowing for camshaft angle modifications, i-VTEC adds more valve timing control. The valves must open and close differently for each RPM range in order to operate at their peak performance at both low and high RPMs. The main distinction between VTEC and i-VTEC is that the former does this.
In contrast to the conventional VTEC, i-VTEC offers a smoother power band and improved performance at both high and low RPMs.
What does the Honda i-VTEC engine do?
Honda developed the i-VTEC technology, also known as intelligent variable valve timing and lift electronic control, to reduce the amount of fuel used by Honda automobiles. The VTEC system switches between two camshaft profiles hydraulically.
The engine can effectively have numerous camshafts thanks to Honda i-VTEC. With this technology, however, the engine’s computer has the ability to vary the cam timing and activate different camshaft lobes as the engine passes through various RPM ranges.
The amazing aspect of this technology is that it allows for the simultaneous use of high- and low-speed camshafts in the same engine. The basic goal of Honda i-VTEC is to achieve maximum engine performance throughout the whole RPM range.
Do i-VTEC engines work well?
Depending on how you drive, yes and no. The majority of drivers won’t notice their VTEC kicking in, but Honda automobiles with VTEC technology tend to be more efficient throughout a wider rpm range than many comparable vehicles, and they’re a lot of fun to drive in the appropriate circumstances. It only becomes operational when the engine is working at relatively high revs, which is uncommon under regular driving circumstances, especially if your vehicle has an automatic transmission. However, if you prefer driving on winding roads and you can adjust your own gears, VTEC makes a big difference.
The Honda i-VTEC engine is it turbo?
Through the use of three essential technologies—Dual VTC for Intake and Exhaust, Direct Injection System and Exceptional Tumble Intake Port, and Highly Responsive Turbocharger with Electronic Wastegate—VTEC Honda’s TURBO achieves high fuel efficiency and exciting power.
Which is superior, VTEC or Turbo?
While VTEC is more focused on extracting the maximum amount of horsepower from the engine because torque on VTEC cars can only be felt on the VTEC range, which is anyplace after 5,500RPMs, the torque produced by a turbo is still negligible in comparison.
VTEC: Does it use more fuel?
When Honda’s R&D team reached the first milestone with the REV (Revolution-modulated valve control) valve stopping mechanism, the enormous effort of creating a smarter engine officially began. The system was designed to be able to shut down several valves at once in order to maximize airflow, provide stable idling, and improve smoothness for low- to medium-powered engine operation. The Honda CBR400F motorcycle used this brand-new advancement for the first time in 1983. Honda then set out to innovate the four-wheel drive after greatly improving the 2-wheelers.
Honda created the DOHC (Double Overhead Camshaft) VTEC system for autos from the REV used in motorcycle engines. A four-stroke internal combustion engine’s volumetric efficiency was increased by the DOHC VTEC, leading to stronger performance at high RPM and decreased fuel consumption at low RPM. The VTEC technology has completely altered the way the world views engines since it was originally introduced in 1989.
The VTEC engine made its debut in India in 2000 and has since established a legacy. The VTEC system had numerous upgrades over the years, with i-VTEC being the most significant (where “i stood for intelligent). The VTC (Variable Timing Control) and VTEC processes were combined in this technology to offer a very effective and excellent performance.
Which of Honda’s engines is best?
The 2001-vintage K is frequently seen in Honda’s sportier models, such as the Honda Civic Type R and Honda Accord Sport. This two-liter four-cylinder engine can currently produce 306 horsepower and 296 lb.-ft. of torque in the Civic Type R thanks to VTEC and a turbocharger. The Honda Accord Hybrid’s “Earth Dreams K24W” engine was named one of Ward’s 10 Best Engines for 2017.
The Civic Type R’s VTEC engine is the most potent street-legal Honda to ever make it to America, producing 153 hp/L.
The K series engine continues to have excellent Honda engine reliability, as is frequently the case. Common problems include oil leakage from the front crankshaft seals, camshaft galling on older engines, and excessive vibrations from worn engine mounts.
What Honda engine is the quickest?
Car Crate for a Civic Type R The 2.0-liter DOHC direct-injected i-VTEC Turbo engine in the Civic Type R generates a maximum 295 lb-ft of torque from 2,500 to 4,500 rpm and 306 horsepower at 6,500 rpm, making it the most potent Honda automotive production engine ever produced in America.
Why is VTEC so effective?
In essence, the VTEC system blends high-RPM performance with low-RPM fuel efficiency and stability. Additionally, the changeover happens smoothly, enabling consistent performance across the entire powerband. The engine computer manages the switching process between the two cam lobes.
Honda stopped utilizing VTEC when?
The 2017 Honda Civic Si will include a turbocharged engine, which is a first for the trim, and will go on sale next month for around $20,000. The 1.5-liter engine has the same 205 horsepower as the old 2.4-liter four with naturally aspirated gas. However, compared to the normally aspirated engine, torque is up 18 lb-ft to 192. The Civic Si should be enjoyable to drive because it has more power accessible lower in the rpm range and a standard six-speed manual transmission.
A sport-tuned suspension with firmer springs and antiroll bars helps to improve car control. Honda claims the new Si is substantially lighter than the previous version (without providing details). A two-mode adaptive damper system (sport and normal), a limited-slip differential, and larger 12.3-inch front brake rotors are all included as standard equipment.
The coupe and sedan both feature subdued design (at least compared to the Type R). The Si gets wider side vents at the back, black trim on the front fascia, 18-inch, 10-spoke wheels, and center-exit exhaust. No flashy body kits or extraneous wings are present.
It will be interesting to see how the 2017 Civic Si stacks up against rivals like the Ford Focus ST, Subaru Impreza WRX, and Volkswagen Golf GTI. With starting costs in the mid-$20,000 range and greater power than the Si, the competition may damage Honda’s new Si. Alternately, the Si could triumph despite lacking VTEC. As soon as we can get behind the wheel, we’ll let you know.
To assist users in providing their email addresses, this content was produced and maintained by a third party and imported onto this website. You might be able to discover more details on this and related material at piano.io.
When does the VTEC start working?
In 3-Stage VTEC, the timing and lift of the intake valves are managed by three separate cam profiles. Since there isn’t much room in this version of VTEC because it was built around a SOHC valve head, it can only change how the intake valves open and close. In this application, conventional VTEC performance and low-end VTEC-E fuel economy advantages are combined. In 12-valve mode, which is used between idle and 2500–3000 RPM depending on the load, one intake valve fully opens while the other very minimally does so to avoid fuel from accumulating behind the valve. This 12 Valve mode causes the intake charge to swirl, improving low end performance and fuel economy by increasing combustion efficiency. Depending on the load, one of the VTEC solenoids engages at 3000–5400 RPM, causing the second valve to lock onto the camshaft lobe of the first valve. This technique, also known as 16-valve mode, mimics a typical engine operating mode and enhances the mid-range power curve. Both VTEC solenoids are now engaged at 5500–7000 RPM, causing both intake valves to use the middle portion of the camshaft. Peak power is produced at the highest end of the RPM range by the third lobe, which is optimized for high performance.
In a more recent version of 3-Stage i-VTEC, VTC and PGM-FI were merged to allow the ECU to regulate the whole spectrum of modes and archive higher performance and fuel economy advantages. The Honda CR-Z can continuously transition between low-end and standard modes between 1000 and 2250 rpm and engage high cam mode from 2250 rpm and above on SOHC.
What VTEC engine has the fastest speed?
Even if high-rpm flogging is not necessary, it makes for storming fun as the 2.0L turbo 4-cyl. cranks out 306 hp before hitting the redline at 7,000 rpm. This VTEC engine is the most potent street-legal Honda to ever enter America, with a specified output of 153 hp/L.
Which motors feature VTEC?
The 1.8-liter engine in the HR-V, however, uses VTEC to regulate the timing of both intake valves at higher speeds and one intake valve at lower speeds, but not lift.
Although the intake and exhaust valves in Honda’s turbocharged four-cylinder engines have variable valve timing, the lift valves do not. According to Honda, this variation of VTEC controls the intake and exhaust camshafts separately, enabling valve timing to be adjusted for a range of driving circumstances. The Accord, Civic, Civic Si and Type R, and CR-V all employ this technology.
The Odyssey, Passport, Pilot, and Ridgeline’s V-6 engines have variable intake valve lift and timing, and VTEC combines with cylinder deactivation to function in a three-cylinder mode.