Assertion: carburetor's throttle | /r/HasProperty | opened
Facets:
value: rapidly
type: MANNER
value: suddenly
type: MANNER
value: wide
type: DEGREE
value: such as in a trailing throttle situation
type: OTHER
value: slightly
type: DEGREE
value: a little
type: DEGREE
value: by pressing on the gas pedal
type: MANNER
value: the more
type: DEGREE
value: briskly
type: DEGREE
value: far enough
type: DEGREE
value: partially
type: DEGREE
Source sentences:
text: As the throttle valve is opened slightly from the fully closed position, the throttle plate uncovers additional fuel delivery holes behind the throttle plate where there is a low pressure area created by the throttle plate/Valve blocking the air flow; these allow more fuel to flow as well as compensating for the reduced vacuum that occurs when the throttle is opened, thus smoothing the transition to metered fuel flow through the regular open throttle circuit.
text: The more the throttle is open, the more air flows through the carburetor and the more fuel it drags in from the pipe to the side.
text: This circuit enriches the air-fuel mixture when the carburetor goes to wide-open throttle (WOT).
text: When the throttle is rapidly opened, airflow through the carburetor increases immediately, faster than the fuel flow rate can increase.
text: The accelerator pump injects fuel into the inlet air when the throttle is opened suddenly.
text: The throttle is a butterfly valve located after the venturi and is opened by pressing on the gas pedal.
text: This serves as the equivalent of an "accelerator pump" on traditional carburettors by temporarily increasing the speed of air through the venturi when the throttle is suddenly opened, thus increasing the richness of the mixture.
text: This feature introduces additional fuel into the airstream as the throttle is opened, which prevents a lean hesitation that can occur due to an as-yet-inactive main metering circuit.
text: As the throttle is opened, air moves past the booster venturi, creating a low-pressure area that pushes fuel through the main circuit into the airstream.
text: The Secondary Well provides an extra shot of fuel instantly when the throttle is opened rapidly.
text: The accelerator pump is either mechanically connected to the throttle, or it is operated by sensing the manifold pressure change when the throttle is opened.
text: On CV carburetors, the throttle cable actuates a butterfly valve (just a lever on the CH80) and, as the throttle is opened, the air pressure difference between the sealed chamber above the vacuum slide and inside the carburetor venturi forces the slide (located in front of the butterfly valve) up and down.
text: An accelerator pump or the equivalent (power jet etc.) will pump out extra gas when the throttle is opened to aid ...
text: The statement When the throttle is rapidly opened, airflow through the carburettor therefore increases faster than the fuel flow rate can increase is also incorrect.
text: When the throttle is opened quickly there is a quick rise in manifold pressure which causes an increase in the amount of liquid fuel wetting the interior of the throat and inlet manifold.
text: When the throttle is opened quickly the pump injects extra fuel into the throat so the mixture in the throat is enriched.
text: However, I see no grounds for suggesting that inertia causes a momentarily lean mixture whenever the throttle is opened quickly.
text: At high power setting more fuel per second is accelerating through the jet than at low power setting, but there is no significant quantity of fuel that has a speed proportional to the power setting, and that needs to be accelerated when the throttle is opened briskly.
text: this evaporates in the near vacuum created, if the throttle is now opened the engine will run lean until the film of petrol is re-established.
text: According to Edelbrock's tuning guidelines, in cases when there is a mid-throttle driveability problem as the throttle is gradually opened but then goes away upon further opening, it may be possible to eliminate the lean spot by using stronger step-up springs from the calibration kit.
text: This vacuum moves around in the venturi, as the throttle is opened, and sucks gasoline through the different jets in the carb.
text: Accelerator Pump: If you've ever looked down a carburetor as the throttle was opened (hopefully when the engine wasn't running), you probably saw a squirt of fuel being discharged into the venturi.
text: When the throttle is suddenly opened, the air accelerates and in effect leaves the fuel behind for an instant.
text: Once the throttle is opened far enough, the jet needle is pulled high enough out of the needle jet and the size of the hole in the main jet begins to regulate fuel flow.
text: When the throttle is opened, there is now sufficient velocity of air to sweep all these droplets into the cylinders, creating a mixture which is too rich to burn, hence the bog.
text: Consequently, if the throttle is only partially opened, such as in a trailing throttle situation, and the bike tends to load up, emitting a deep tone when the throttle is returned to full open, it is usually a sign of a rich slow jet.
text: This rod causes the throttle to be opened slightly when the choke is engaged, thus acting as a fast idle.
text: As throttles are opened, the accelerator pump linkage acts on this piston, which draws fuel into the pump bore.
text: When the throttle is open, more air and fuel flows to the cylinders so the engine produces more power and the car goes faster.
text: At low engine speeds when the throttle is only open a little there is not enough air flow to pull in fuel.
text: When a throttle is wide open, the intake manifold is usually at ambient atmospheric pressure.
text: The throttle is either open or closed (although there is always a small hole or other bypass to allow a small amount of air to flow through so the engine can idle when the throttle is closed), or some intermediate position.