Under what circumstances do cars emit the most carbon monoxide

When the car is parked and the engine is turned on, the carbon monoxide emits the most.

When the engine is running when the car is parked, it emits the most carbon monoxide.

When the combustion chamber of a car engine works at a high temperature, it is more likely to produce carbon monoxide, and when driving the engine of a car and stopping, etc., the fuel is just burned, but no work is done on the driving wheels, and the combustion chamber temperature is higher, and carbon monoxide occurs more.

The key to controlling CO emissions is to control the excess air coefficient of combustible gas mixtures, in concentrated gas mixtures, the CO volume fraction continues to increase with the decrease of excess air coefficient, which is due to incomplete fuel combustion due to lack of oxygen.

In rarefied gas mixtures, the CO volume fraction is always low, but in between, the CO volume fraction shows a complex change as the excess air coefficient changes.

In the case of a part load, the CO emissions are not high. CO emissions are large during full-load operation and cold start. When the engine accelerates, the transient concentration becomes thicker, the oil does not stop during deceleration, and the oil supply control in the transient state deteriorates, and the CO emission becomes higher.

The impact of the substances emitted by cars on the environment is very large, and there are several ways to reduce vehicle emissions:

1. Turn off electrical appliances after getting out of the car, including radio, window heating, air conditioning, etc., otherwise it will automatically turn on when you start the car again.

2. The tire pressure of the tire should be normal, if the tire pressure is lower than 40kpa, the fuel consumption of the car will increase by 3%, so the normal tire pressure can save fuel.

As follows:

The car emits the most carbon monoxide when the engine is parked and the engine is turned on, and the combustion chamber of the automobile engine is easy to produce carbon monoxide when working at high temperatures, and when the engine is stopped and waiting, because there is no load, the fuel is burned and does not work, and the combustion chamber temperature is relatively high, so it is more likely to produce carbon monoxide.

Carbon monoxide is a carbon oxide with the chemical formula CO, which is usually a colorless, odorless, and tasteless gas. Physical properties: The melting point of carbon oxide is minus 205 degrees Celsius, and the boiling point is minus degrees. Carbon oxide on chemical properties is both reducing and oxidizing, and can undergo oxidation reactions, disproportionation reactions, etc., and is toxic at the same time.

Ways to reduce emissions from automobiles.

The first is to turn off the electrical appliances after getting out of the car, including the radio, window heating, air conditioning, etc., otherwise the car will automatically turn on when you start it again.

The second is that the tire pressure should be normal, if the tire pressure is lower than 40kpa, the fuel consumption of the car will increase by 3%, so the normal tire pressure can save fuel.