Sentences with phrase «valves at low rpm»

R18Z1 was a variant with the modified i - VTEC system which could disable 4 intake valves at low rpm.

R20Z1 was the version for Honda Accord 9 gen. and Honda Civic 9th gen.. Here the i - VTEC system is able to close half of the intake valves at low rpm.

Such a level hadn't found acceptance with Rolls - Royce previously and might be one reason for the special 2 - phase - exhaust system, which employed a device to shut a valve at low rpm thus bringing down the exhaust note to an inaudible hustle.

Not exact matches

I'm also wondering why it kept the same 14,000 ish rpm as other litrebikes despite having lower stroke (around 17,500 rpm at 25 m / s), desmo valves, geardriven cams, and a perfectly balanced 90 degree V4.

The purpose of the closed IMRC valve is to increase the air charge velocity at low RPMs which fills the cylinders more, giving you more low end torque.

A valve pushes exhaust through a smaller gate to the turbo at a lower rpm; as the engine rpm picks up, the valve opens to create a bigger path to the turbo.

With its low - friction valvetrain, variable valve - timing and the latest Bosch engine management system, the V - 12 feels awake at last, and it spins effortlessly to its power peak, which comes nearly 1000 rpm higher than a decade ago.

Meanwhile, a twin - scroll turbo ensures that the boost spools up at low rpm and then carries through to peak rpm, variable valve timing on both the intake and exhaust cams swells the power curve down low, and direct fuel injection makes possible a relatively high 10.0:1 compression ratio that helps deliver crisp acceleration.

Because of this, at low RPM, when VTEC is not engaged, one of the two intake valves is allowed to open only a very small amount due to the mild cam lobe, forcing most of the intake charge through the other open intake valve with the normal cam lobe.

At low RPM only one valve on the intake opens fully, promoting combustion chamber swirl and improved fuel atomization.

At the switch point a solenoid is actuated that allows oil pressure from a spool valve to operate a locking pin which binds the high RPM rocker arm to the low RPM ones.

Optimal low RPM valve timing lift and duration settings would result in insufficient filling of the cylinder with fuel and air at high RPM, thus greatly limiting engine power output.

VTEC (Variable Valve Timing & Lift Electronic Control) is a system developed by Honda which was said to improve the volumetric efficiency of a four - stroke internal combustion engine, resulting in higher performance at high RPM, and lower fuel consumption at low RPM.

The 177 hp Euro - 5 16 - valve four - cylinder engine reaches its maximum power at a relatively low (for such a small engine) 6,200 rpm.

The engine uses continuously variable valve timing (CVVT) and a variable intake system, which helps the cylinders breathe efficiently at low and high rpm.

It offers expanded valve opening angles (Wide) which enables the engine to operate in a modified - Atkinson cycle at low rpm for improved economy and lower emissions, and in the Otto cycle at high rpm for better performance, while delivering high torque throughout the rpm band.

The 2.0 - liter, 16 - valve engine uses Continuously Variable Valve Timing (CVVT) to boost performance, enhance fuel economy and reduce emissions at low - mid-rangevalve engine uses Continuously Variable Valve Timing (CVVT) to boost performance, enhance fuel economy and reduce emissions at low - mid-rangeValve Timing (CVVT) to boost performance, enhance fuel economy and reduce emissions at low - mid-range rpm.

Although the engine gains only 0.2 kg ⋅ m (2 N ⋅ m; 1 lb ⋅ ft) torque over the VQ35HR and this torque value arrives at a later 5,200 rpm vs. 4,800 in the VQ35HR, the torque curve itself is improved and flattened across the rpm range via Nissan's new VVEL (Variable Valve Event and Lift) variable valve timing resulting in better throttle response and low rpm toValve Event and Lift) variable valve timing resulting in better throttle response and low rpm tovalve timing resulting in better throttle response and low rpm torque.

By pressing the exhaust sound control switch prior to engine start, this will close the electronic valve within the exhaust system for more quiet operation at engine startup and continue for a brief time while the vehicle is driven with the engine running at low rpms.

At low rpm, the VTEC intake valve timing and lift are optimized for rapid swirl - pattern cylinder filling.

With an aluminum - alloy design with dual overhead cams and four valves per cylinder, the MX - 5 uses variable valve timing on the intake cam, a low - restriction variable - length intake system, and a low - restriction exhaust system to make 170 horsepower at 6,700 rpm and 140 pound - feet of torque at 5,000 rpm.

At low rpm, VTEC provides valve timing and lift for optimum cylinder filling.

The phrase «VTEC just kicked in yo» won't apply here — VTEC now solely controls the exhaust valves, reducing turbo lag through increased exhaust pressure at lower rpms while delivering a high output at higher engine speeds.

Whereas traditional VTEC operation changes valve opening duration based on higher oil pressure during high rpm operation at one side of the valvetrain's rocker arms, the Civic's i - VTEC system can switch valve timing duration at low rpm and low oil pressure using two hydraulic actuators on both sides of the intake rocker arm.

Dual cam phasing complements the turbocharging system by optimizing valve timing at lower rpm for best turbo response and quick engine torque build - up time.

Special by - pass valves in the exhaust allow a quieter exhaust note at low speeds; at 4000 rpm these open to reduce the pressure in the exhaust system, raising the power output as well as generating a rousing aural accompaniment.

Also, valve «overlap» at low rpm can be adjusted by the controller to increase the response of the turbocharger, providing a more immediate feeling of power.

In order to reduce turbo - lag the engine uses an excess valve overlap theology, in low RPM open - throttle situations, maximizing air availability at the turbocharger intake.

To further broaden the power band, the 3.8 - liter engine uses Dual Continuously Variable Valve Timing (Dual CVVT) and a Variable Intake System (VIS) that helps cylinders breathe most efficiently at both low and high RPM.

The valves are closed at lower rpms.

Ordinary engines have fixed valvetrain parameters - the same timing of valve lift and overlap whether the tachometer needle is struggling to climb out of the low - rpm range or screaming at the redline.

Technologies such as variable valve timing are utilized to deliver substantial torque at lower rpms while reducing emissions.

At low rpm, the i - VTEC intake valve timing and lift are optimized (low lift, short duration) for increased torque, which allows a wide range of 3 - cylinder operation.

Titanium valves, ultra — light weight rocker arms with a diamond — like coating and a fully integrated lower crankcase that reduces pumping losses at high RPMs combine to provide the driver with overwhelming acceleration right up to the 9,000 rpm redline.

Among the wizardry is variable valve timing and a turbocharger with variable vane technology, for more oomph at low rpm.

This is achieved by providing reduced intake valve lift and duration at low engine speeds for good torque, with increased intake valve lift and duration at higher rpm for optimum power.

Rated at 188 horsepower at 5,600 RPM and 177 lb - ft of torque at 1,600 - 5,200 RPM, the 16 - valve DOHC aluminum - alloy inline 4 - cylinder engine includes a 10.5:1 compression ratio, Continuously Variable Valve Timing Control System (CVTCS), spray - coated and mirror - finish cylinder bores, a variable pressure oil pump and a low - pressure EGR system, which helps lower exhaust gas temperature and improve knock sensitivalve DOHC aluminum - alloy inline 4 - cylinder engine includes a 10.5:1 compression ratio, Continuously Variable Valve Timing Control System (CVTCS), spray - coated and mirror - finish cylinder bores, a variable pressure oil pump and a low - pressure EGR system, which helps lower exhaust gas temperature and improve knock sensitiValve Timing Control System (CVTCS), spray - coated and mirror - finish cylinder bores, a variable pressure oil pump and a low - pressure EGR system, which helps lower exhaust gas temperature and improve knock sensitivity.

Steering Power Variable Effort Electric Engine Ecotec Turbo 1.4 L Variable Valve Timing Dohc 4 - Cylinder Sequential Mfi (138 Hp [102.9 Kw] @ 4900 Rpm 148 Lb - Ft Of Torque [199.8 N - M] @ 1850 Rpm) Mechanical Jack Side Blind Zone Alert Brakes 4 - Wheel Antilock 4 - Wheel Disc Rear Cross-Traffic Alert Daytime Running Lamps Reduced Intensity Low Beam Rear Vision Camera Stabilitrak Stability Control System Tire Pressure Monitor Manual Learn Onstar With 4G Lte Provides A Built - In Wi - Fi Hotspot To Connect To The Internet At 4G Lte Speeds Includes 3Gb Or 3 Months Onstar Data Trial (Whichever Comes First)(Available 4G Lte Wi - Fi Requires Compatible Mobile Device Active Onstar Subscription And Data Plan After Trial.)

This engine alters the intake and exhaust valve timing to optimize engine output across a wider RPM range, producing high torque at low RPMs and satisfying top - end power for highway cruising confidence.

The i10 blue, which goes into production at the end of 2010, employs the new 1.0 - liter Kappa gasoline engine, which produces 69 PS at a lower rpm level of 6200 rpm while generating 94 N · m of torque, and is fitted with a dual continuous variable valve timing (CVVT) system.

Aluminum 4 - valve heads and an aluminum intake manifold with variable - length runners optimize airflow at all engine speeds to improve low - speed tractability and high - rpm power with greatly reduced combustion noise.

Other features include twin overhead camshafts, four valves per cylinder, multiple direct fuel - injection and a variable geometry turbocharger for high torque and a rapid throttle response at low rpm.

At low rpm, the VTEC intake valve timing and lift are optimized (low lift, short duration) for increased torque, which allows a wide range of 3 - cylinder operation.