what is carburetor choke?

Question

I am trying to star a litle engine 2 times 23 cc (hobby style) and into the instruction manual they mention that I have to open the carburator choke but I am not sure what part of the carburetor is the choke?? Thanks in advance for your kind help

Answer 1

The purpose of the choke is to add extra gasoline to the combustion chamber at startup. Sometimes the choke is on the throttle, in which case you just slide the throttle pin all the way to the right. Sometimes there is a seperate choke control, in which case you typically pull it open. But on a tiny little engine like yours, it is probably hard to find, look for a small switch in the proximity of the fuel line and carb. After the engine starts, shut the choke off; otherwise, the motor will sputter and die on you.

Answer 2

(j)

Chokes perform the fuel mixture adjustments necessary to start a cold engine. When the fuel-air mixture is too cold, the engine won't start properly, or will stall out periodically. The choke when engaged (closed) the choke causes the fuel air mixture to be increased, or "enriched". The choke is a special valve placed at the mouth of the carburetor so that it partially blocks off the entering air. When the choke plate closes, the vacuum below it increases, drawing more fuel from the fuel bowl. The rich fuel mixture burns even at lower temperatures, allowing the engine to warm up.

The manual choke is a knob on the dash, usually the push-pull type, which extends from the choke on the carburetor to the instrument panel. The driver closes the choke when starting the engine. The main thing to know about a manual choke is to push it back in when the engine has reached normal operating temperature. The trouble with the manual choke is that the driver often forgets to open it fully. This results in a rich fuel mixture which causes carbon to form in the combustion chambers and on the spark plugs. To correct this problem, the automatic choke was developed.

The automatic choke relies on engine heat. The choke valve is run by a thermostat which is controlled by exhaust heat. When the engine is cold, the valve will be closed for starting. As the engine warms, the exhaust heat will gradually open the choke valve. An automatic choke depends on a thermostatic coil spring unwinding as heat is supplied. As the engine warms up, manifold heat is transmitted to the choke housing. The heat causes the bimetal spring to relax, opening the valve.

An electric heating coil in the automatic choke shortens the length of time that the choke valve is closed. As the spring unwinds, it causes the choke valve in the carburetor air horn to open. This lets more air pass into the carburetor. The coil is mounted in a well in the exhaust crossover passage of the intake manifold. Movement of the bimetal spring is relayed to the choke valve shaft by means of linkage and levers.

Answer 3

The carburetor, carburettor, or carburetter (see spelling differences), also called carb (in North America) or carbie (chiefly in Australia) for short, is a device that mixes air and fuel for an internal combustion engine. It was invented by Hungarian scientists Donát Bánki and János Csonka in 1893. Carburetors are still found in small engines and in older or specialized automobiles such as those designed for stock car racing. However, fuel injection, first introduced in the late 1950s and first successfully commercialized in the early 1970s, is now the preferred method of automotive fuel delivery. The majority of motorcycles still are carburated due to lower weight and cost, but as of 2005 many new models are now being introduced with fuel injection.


Choke may refer to:

Choking, obstruction of airflow into an organism's lungs
Choke (horse), a condition in horses in which the esophagus is blocked
Choked flow, a restriction of a gas or fluid flow under pressure
Choke valve, a valve used in the carburetor of internal combustion engines to enrich the fuel-air mixture during startup
Chokehold, a grappling hold performed on the neck that aims to render the opponent unconscious
Choking game, a schoolyard game of unconsciousness or near unconsciousness that is potentially lethal
Choke pear, an old device that may or may not have been an instrument of torture
Chokecherry, a suckering shrub or small tree, a species of bird cherry
Choke point, a constriction in a conduit or transport system, e.g. a narrowing of a road
Choke (electronics), an inductor used to block signals of particular frequencies
Choke (sports), a failure to win a competition after an initial large lead e.g. bulldogs in the nrl
In Hawaii, the word choke is a slang word meaning, "a lot" or "plenty". ex: Get choke food at the party. meaning: There is a lot of food at the party.

Answer 4

Choke is a device to richen the mixture for cold starting. It usually achieves this by closing of a good part of the airway to limit the air in relation to the fule going in.

Look for a hinged plate near the top of hte carby that can open and lose to let air through. (Throttle plate is on the bottom)

Clsed plate is choke on, open plate is choke off.

Answer 5

yea what they said ,except i call it a butterfly choke

Answer 6

ASK A TECHNICIAN COZ I DUNNO WAT MODEL OF A ENGINE U GOT1!!