How to Deal with Excessive Pressure in LNG Vehicle Cylinders?

[StIsabella]

LNG vehicle cylinders with excessive pressure can be depressurized by simply driving the vehicle to an open area and manually opening the vent valve. It's important to note that LNG vehicle cylinders are designed with two-stage safety valves to account for pressure increases due to rising temperatures. Specific details are as follows: When the internal pressure exceeds 1.2 times the normal working pressure, the primary safety valve activates, releasing gas to reduce the pressure until it drops below 1.2 times the working pressure. If the pressure still does not return to normal after the primary safety valve vents, the secondary safety valve will open (at 1.8 times the working pressure).

[ZaneLee]

Last time I drove an LNG vehicle, I also encountered the issue of excessive gas cylinder pressure. I later learned that this was caused by hot weather or overfilling. In such a situation, the first thing to do is to stop the vehicle immediately and pull over to a safe place. Never continue driving to avoid pressure explosion. I would immediately contact professional maintenance services, such as a 4S shop or a technician specialized in gas-powered vehicles, and have them bring tools to reduce the pressure or inspect the valve system. On a regular basis, I always remind myself to check the gas cylinder periodically, avoid parking for too long in high temperatures, and not to overfill during refueling. Developing good habits is crucial. I also frequently clean the ventilation ports to ensure they are not blocked. In short, safety comes first. This issue should not be delayed, and only after proper handling can one drive with peace of mind.

[EllieLee]

That day on the highway, the pressure in my LNG vehicle's gas cylinder suddenly spiked, which gave me quite a scare. As an experienced driver, I immediately turned off the engine, rolled down the windows for ventilation, and quickly called the repair shop. Experience tells me this could be due to a stuck valve or an imbalance in the gas-liquid ratio. I usually find a shady spot to park and wait for professional help, never attempting to relieve the pressure myself—it's too dangerous. Before long trips, I always check the pressure gauge to ensure the readings are normal. I've heard that regular maintenance can prevent such incidents, like inspecting the pipelines and valves every six months to avoid temperature rises from sun exposure. Everyone should pay attention to this—safe driving is what really matters.

[JaylaLynn]

As an enthusiast of gas-powered vehicles, I've researched the reasons for high pressure in LNG tanks, such as rapid vaporization due to rising ambient temperatures or issues with the filling valve. To address it, I would immediately stop and turn off the engine, then contact a professional technician to inspect the pressure reduction system and safety devices. If the valve is fine, they would use specialized tools to release some gas to reduce the risk. For daily care, I recommend avoiding parking in direct sunlight on hot days and controlling the filling amount, not exceeding 80% of the tank's capacity. Regular maintenance is also crucial, with an annual check-up saving a lot of trouble. Simply put, don't risk DIY; professional handling is the right way.