Sentences with phrase «of cam lobe»

At one end of the cam lobe is the least aggressive cam profile, and at the other end is the most aggressive.

The camshafts on some Ferrari engines are cut with a three - dimensional profile that varies along the length of the cam lobe.

If you grind this area down, the lift from this portion to the top of the cam lobe becomes a larger distance, and thus you have more lift and more potential air flow going into the cylinder.

Valve float is an adverse condition which can occur at high engine speeds when the poppet valves in an internal combustion engine valvetrain do not properly follow the closure phase of the cam lobe profile.

Not exact matches

I love BB creams and have been cam lobe profile catalog an expanded listing of all crane cams lobe profiles for professional racing engine builders

It doesn't use direct injection, but the V - 6 does have a new version of iVTEC that can not only switch between high and low cam lobes, but on the rear bank of cylinders, can keep the valves closed completely.

Valve float is bad because the valve gets a running start at the valve seat instead of being gently lowered on to the valve seat by the cam lobe.

It also has the beauty of not caring about valve / cam lobe position.

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.

The switching operation between the two cam lobes is controlled by the ECU which takes account of engine oil pressure, engine temperature, vehicle speed, engine speed and throttle position.

When in VTEC, since the «normal» cam lobe has the same timing and lift as the intake cam lobes of the SOHC non-VTEC engines, both engines have identical performance in the upper powerband assuming everything else is the same.

In basic form, the single cam lobe and follower / rocker arm of a conventional engine is replaced with a locking multi-part rocker arm and two cam profiles: one optimized for low - RPM stability and fuel efficiency, and the other designed to maximize high - RPM power output.

Also, you will want to use a cam specific lube on the camshaft where the lobes intercept ride on the lifters (or whatever they are called... the caps on top of the valves which the lobes ride on).

• Two - lobe overhead cam and a pair of needle - roller rocker arms reduce friction by 50 percent for increased fuel efficiency and torque.

Multi-valve engines tend to have smaller valves that have lower reciprocating mass, which can reduce wear on each cam lobe, and allow more power from higher RPM without the danger of valve bounce.

The 6G73 is a 24 - valve SOHC design with two valves running off a single cam lobe on the exhaust valves using a forked rocker arm and each intake valve actuated with two cam lobes, with a smaller bore than the 3.0 liter version of the same block.

The cam lobe profile selected for engine speeds below 3000 rpm has a duration of 214 degrees and lifts the valves 5.5 mm.

For high - speed driving, CPS switches to a cam lobe with a duration of 250 degrees and valve - lift of 10.5 mm, allowing greater air flow into the engine for high power.

In order to achieve the optimum volumetric efficiency in the lower portion of the engine's operating range, rocker arms are programmed to follow cam lobes that provide low lift and reduced duration (shorter time open with less valve lift).

The four composite camshafts use net - sinter forged cam lobes on hollow shafts, with the inside of the shafts serving as oil passages.

Usually, double overhead cams are used on engines with four or more valves per cylinder — a single camshaft simply can not fit enough cam lobes to actuate all of those valves.