What are the reasons why an LNG vehicle fails to start?
2 Answers
Reasons why an LNG vehicle fails to start: 1. The liquid temperature is relatively low after refueling; 2. The pressure regulating valve is set too low; 3. The economizer valve pressure is adjusted too low; 4. The safety valve is damaged, causing gas leakage; 5. There is gas leakage in other pipelines. The following is an introduction to LNG vehicles: LNG vehicles are short for liquefied natural gas vehicles. LNG vehicles are a new generation of natural gas vehicles that use low-temperature liquefied natural gas as fuel. Their prominent advantage is the high energy density of LNG, which allows for a driving range of over 400km, offering significant economic benefits compared to vehicles using diesel or gasoline.
I've been driving LNG trucks for long hauls for several years, and there are several common reasons for failure to start. First, fuel system issues—if there's insufficient gas in the LNG tank or the valve isn't opened properly, it's like running out of fuel, and the vehicle won't start. Or, ice may block the pipelines, especially in winter when LNG tends to clump. Second, battery issues—if the battery is old or the contacts are loose, there won't be enough current during startup. Third, ignition problems—too much carbon buildup on the spark plugs can prevent ignition. Another possibility is an ECU control module malfunction, disrupting fuel supply. I've encountered this situation before—first, check the tank pressure and ignition components. Regular maintenance is key, including periodically cleaning the filters and testing battery voltage. If the problem persists, seek professional repair immediately to avoid breakdowns on the road.
