What Are the Common Faults of Weichai Natural Gas Engines?

[DiGrace]

Common faults of Weichai natural gas engines include poor power performance, difficulty in starting, and excessive fuel consumption. 1. When natural gas is used as fuel in CNG vehicles: Due to the engine structural parameters not being adaptively adjusted according to the characteristics of natural gas, the excellent properties of natural gas fuel cannot be fully utilized, resulting in a 9%~15% decrease in engine output power and a 4%~10% decrease in output torque compared to when using liquid fuel. Under the premise of excluding the engine's own faults, the main cause of poor power performance in CNG vehicles is problems in the fuel supply system. 2. Improper installation and poor sealing: If the mixer and air filter are improperly installed and poorly sealed, excessive air leakage occurs, reducing the vacuum level at the mixer throat and decreasing the amount of natural gas drawn into the engine cylinders.