Many of us have problems starting the bike in the morning, which is usually called engine cold problem. And in this kind of problem, the device of motorcycle is very well known to start in cold engine, it is called motorcycle choke. So today we will discuss what a motorcycle choke is and how it works.
What is a motorcycle choke?
First of all, the choke is one of the most important part of a bike with a carburetor. The carburetor engine is made of air-fuel mixture and it is inserted into the engine either mechanically or manually. And the carburetor choke is a necessary part of such mechanical technology in motorcycles. Choke works to create the necessary air-fuel mixture in the engine for environmental and temperature problems there.
The motorcycle choke is actually a pulling lever attached to the carburetor. It is attached directly to the carburetor or to the carburetor via cable even if it is attached to the front handlebar. The point is, no matter where it is fitted, the choke basically controls one of the valves of the carburetor and the whole process is choke.
What is the function of motorcycle choke?
Earlier in the day, it was a must have, for any Affiliate, promoting any program. Every morning I had to pull the choke while starting the bike. Although it was not so urgent during the summer. But in winter, you had to start by pulling the choke every day. Of course, today's bikes have auto chokes, so you don't have to pull them separately.
No matter what time or weather it is, what is the choke to start a cold engine? And what role does the choke play in catching the engine start there?
Yes, the choke lever increases the fuel ratio in the air-fuel mixture in the engine. The choke lever in the carburetor is attached to a valve or gate and increases the amount of fuel in the air-fuel mixture.
In fact the choke lever increases the amount of fuel in the engine or reduces the amount of air. As a result, due to the increase in the amount of fuel in the mixture, the ignition also occurs faster in the cold engine. This is the work of Choke.
Motorcycle Choke - How Does It Work?
The choke lever in the carburetor works to catch the first cold engine start of a bike on a winter morning or during the day or for a long time But the question is, how to choke this work?
In fact the carburetor has a fixed ratio for the air-fuel mixture, although that can be changed. It is mechanically controlled by the throttle. But the proportions of this mixture cannot be changed automatically due to weather or any other situation.
So in any situation when the ratio of fuel required to start a cold engine is high, it can be controlled mechanically by choke. Its main function is to increase the amount of fuel or reduce the amount of air.
The choke used to control the throttle butterfly wing or a small door or butterfly wing opposite the door. It would have reduced the air in the engine but the fuel supply would have remained the same. As a result, the amount of fuel in the mixture would increase compared to air.
But in modern carburetors the main flow of air-fuel remains the same according to the throttle. When the choke lever is pulled, a valve opens in the main air intake hole. That hole goes directly through the carburetor's fuel reserve bucket.
And when the choke is pulled, the lid of that valve opens and air enters through it. At that time the vacuum of the piston pulls the fuel directly from the fuel bucket due to pressure or venture effect. This excess fuel is combined with a regular mix of wind-fuel.
This increases the fuel ratio in both types of carburetors. Resulting in a quick start on the cold engine. Basically this is how choke increases the amount of fuel.
Is it always a choke to damage the engine?
The question that often arises when pulling the choke is, does pulling the choke arbitrarily damage the engine? The answer is no. Pulling the choke to catch the start in a cold engine is not harmful. It is a work in progress.
However, if you choke unnecessarily, only fuel is wasted. This is because, when the choke pull increases the amount of fuel in the engine, so more fuel is consumed than usual. Without this problem, pulling the choke on a cold engine is rather beneficial. This is because the top wall of the engine cylinder gets wet and slippery with oil. But it stays dry during the first start of the morning. Moreover, it also protects the wiring.
Does the EFI engine have chokes?
The EFI engine does not have a manual choke lever. Besides, it also automatically increases the amount of fuel.
The ECU in the EFI engine automatically increases the amount of fuel in the mixture. It changes the mix based on various parameters according to pre-programming and sensor readings done earlier. If required, the fuel is sprayed directly from the fuel spray nozzle into the air-fuel mixture in this engine. In other words, EFI engine does not have manual choke, it has auto choke system.
So this was today's event with the reader, the motorcycle choke and his work. Hopefully, you have got a proper and clear idea about motorcycle choke and its work. We will try to answer as soon as possible. Thanks everyone.