From China

What are the Key Similarities between the LPG and CNG Gas?

Category: Science & Technology

by lineng

2021-01-23 01:15:02


Jiaxing Lineng Autogas Equipment Co., Ltd. has provided various accessories such as CNG Conversion Kits and CNG Injection Kits for automobiles. It's high-quality products and serves customers with care.

Both LPG and CNG gas can be used in traditional home and business applications, as well as for vehicle fuel. Both are domestically produced energy sources, reducing reliance on imported oil. LPG and CNG both have greatly reduced greenhouse gas emissions, compared to petrol and diesel.

Both CNG and LPG are stored in cylinders or tanks, making them transportable


The following will introduce How a CNG Vehicle Works in


1.) CNG is compressed to 3600 psi and enters the vehicle through

the CNG fill receptacle.

2.) It flows into high-pressure cylinders located in or under

the vehicle.

3.) For a bi-fuel NGV, a fuel selector on the dash permits selection of CNG or gasoline. A dedicated NGV operates solely on CNG.

4.) When needed the CNG leaves the cylinders and passes through

the (PRD) pressure relief device and electric solenoid shut-off valve (Which

stops the flow of CNG when the engine is not running or in the case of a bi-fuel the vehicle, gasoline is selected).

5.) The CNG travels through a short high-pressure fuel line and

enters a (10 micron) coalescent filter, which removes aerosol compressor oil

droplets and other contaminants from the CNG.

6.) The CNG now enters the pressure regulator, which reduces

pressure from up to 3,600 psi to approximately 70 - 125 psi.

7.) The CNG flows through a low-pressure fuel line and enters

the fuel rail which supplies pressurized fuel to all of the specially designed

CNG fuel injectors.

8.) The CNG injectors inject the CNG into the engine's intake


9.) The ECM (electronic control module) controls the sequential multi-port fuel injection pulse widths or amount of CNG the injectors inject into the engine. This system allows each injector to open just before the intake the valve opens, instead of all injectors opening all at once.