Sentences with phrase «lift cam lobe»
Using these inputs, the ECU is programmed to switch from the low lift to the high lift cam lobes when certain conditions are met.
https://en.m.wikipedia.org/ Not exact matches
The previous LS versions have extensive aftermarket support where builders talk head airflow statistics, rod ratios (connecting rod divided by stroke), cam durations, lift and lobe separation and inductions schemes.
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.
Theoretically the worn cam lobe can be reground to regain the lift.
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.
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).
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.
When the ejector pin is retracted, there is nothing to hold the cam unit in this new position any more, so it will glide back to its original position to resume valve lift via the smaller cam lobe.
As a result, both intake valves follow a central high - lift, longer - duration cam lobe.
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).
As the engine load changes, electromagnetic actuators allow a movable shaft containing different cam lobes to shift imperceptibly between high - lift and low - lift profiles.