How to Adjust the Valve of an LNG Vehicle for Both Fuel Efficiency and Power?
2 Answers
When the pressure in the buffer tank drops to zero, start by opening the valve a quarter turn. You will hear a hissing sound of gas escaping. Once the sound stops, fully open the valve and then turn it back one full turn. When the cylinder pressure is below 0.8Mpa, open the valve while simultaneously activating the pressurization valve. When replacing cylinder components, open the pressure relief valve or if the cylinder pressure is too high, it needs to be emptied.
Adjusting the valves of an LNG vehicle to save gas while maintaining power is actually a technical task. First, you need to understand that the valves control the fuel-to-air mixture ratio—getting it right ensures more complete combustion, reducing waste and boosting performance. As someone who frequently tinkers with cars, I recommend using a diagnostic tool to check the valve opening first, ensuring it stays within the recommended range—for example, an air-fuel ratio of around 14.7:1 is optimal. If you lack experience, bring a simple tuning device to assist with measurements to avoid setting the valves too tight or too loose, which can waste gas and make the engine feel sluggish. Don’t forget to clean the air filter regularly, as clogging can affect valve performance. Driving habits also matter—avoid aggressive acceleration, as a gentler throttle helps save fuel. In short, adjusting valves requires patience; start by learning the basics from a professional repair shop and gradually experiment on your own.
