What are the reasons for the high gas consumption of natural gas vehicles?
2 Answers
Natural gas vehicle high gas consumption reasons: The fuel consumption of CNG vehicles is related to the selected vehicle model, vehicle condition, and modification technology level. Under the condition of ensuring no gas leakage loss, excessive fuel consumption when using natural gas is related to improper installation and adjustment of the CNG pressure reducer. The following is an introduction to vehicle gas usage: 1. Type: Small vehicles mainly use CNG, with short driving range, small gas consumption, and low CNG tank cost; large vehicles mainly use LNG, with long driving range, large gas consumption, and high LNG tank cost. 2. Property: The gas supplied for vehicle use must be processed. Generally, natural gas and liquefied petroleum gas supplied for civilian use contain many impurities. If used directly as vehicle fuel, it will cause damage to the vehicle. If the engine combustion is abnormal, it will also affect the vehicle's lifespan.
I've been driving a natural gas vehicle for several years, and I think the high gas consumption is mainly due to inefficient engine performance. The combustion characteristics of natural gas are different from gasoline, making incomplete combustion more likely. If the injectors aren't calibrated correctly or the air-fuel mixture ratio is off, it takes more gas to achieve the same power output. Many vehicles are retrofitted with natural gas systems that weren't originally designed for it, resulting in poor combustion efficiency and carbon buildup. I regularly check the ignition system and replace spark plugs to slightly improve combustion. Also, engine efficiency drops when the vehicle is too hot or cold, increasing gas consumption, so I always maintain the cooling system properly. I recommend avoiding sudden acceleration—smooth driving helps a lot, otherwise you'll waste a significant amount of gas. When retrofitting, choose a professional shop to properly tune the ECU control to prevent logic inaccuracies that could lead to higher gas consumption.
