What is the function of the motorcycle choke?
2 Answers
Choke is a unique device in carburetor-type gasoline engines, which adjusts the mixture concentration to facilitate starting. Under normal circumstances, it should be kept in the open position. Here are some introductions about the choke: 1. Automatic electric choke: Before starting an engine with this type of choke, press the throttle pedal once, and the automatic choke will close automatically; then turn on the ignition switch, making it easier to start. Since it is controlled by an electric heating wire, the choke will automatically open after a few minutes of power supply. 2. Manual choke: This is manually controlled by the driver, using a cable to adjust the opening degree of the choke to adapt to various changes in mixture concentration.
I've been riding motorcycles for over 30 years, and the choke is particularly useful for cold starts. During autumn and winter mornings when temperatures are low, the engine can be hard to start. The choke enriches the fuel supply, similar to manually increasing the fuel injection, helping the engine warm up quickly. I remember one winter trip when I forgot to pull the choke—the bike wouldn't start no matter how long I tried. Once I used the choke, it started smoothly right away. This device mainly adjusts the air-fuel ratio. At low temperatures, fuel evaporates slowly, and the standard mixture concentration isn't sufficient. The choke temporarily supplements it, reducing starting difficulties and the risk of stalling. Of course, it's important to turn it off after the engine warms up, otherwise, it wastes fuel and harms the engine. Regularly checking if the choke cable is stuck is also crucial, as failure to do so might lead to starting issues. Overall, this is a must-know trick for experienced riders to avoid breakdowns on the road.
