Is the taxi burning natural gas or liquefied gas?

Theoretically, the combustion temperature of natural gas is higher than that of gasoline, which will cause the high temperature of the engine and affect its service life. As we all know, there is a cooling system. No matter the ambient temperature or the internal temperature of the engine, the system will automatically adjust the water temperature within a suitable range, unless it exceeds the limit, so although the combustion temperature of natural gas is high, it will not cause the high temperature of the engine.

Moreover, the engine wear is mostly caused by the low temperature of the engine. Because of its high combustion temperature, natural gas can increase the engine temperature faster after cold start, reduce the low temperature time and reduce wear. One more thing, during the cold start, the amount of gasoline injected is large and the combustion is incomplete. Unburned gasoline will adhere to the cylinder wall, dilute the oil film on the cylinder wall and increase engine wear, while natural gas is gas, which will not happen.

Because gasoline is liquid, it needs to be atomized and burned. How to make gasoline and air fully mix and burn is a subject that major automobile companies have studied for many years. From carburetor to EFI, to direct injection and then to stratified injection, it has been improving but still not perfect. Natural gas is a kind of gas, which can be mixed with air more evenly and burned more fully, which is incomparable to gasoline. Private cars that burn oil often clean the throttle every 30,000 to 50,000 kilometers, while cars that burn gas avoid this.

Due to the high combustion temperature of natural gas, the spark plug is in direct contact with the combustion chamber and the ignition coil is in direct contact with the spark plug. Higher temperatures may affect their service life. However, from the actual use, only a few yuan of natural gas special spark plug is replaced every 60 thousand kilometers, and the replaced spark plug has not been seriously eroded, and the ignition coil has never been replaced. Maybe the high temperature didn't exceed their tolerance.