NGV, LPG, CNG, LNG: Clear Definitions & Differences
Global auto industries are shifting to clean green energy. Gas-powered cars cut carbon emissions and reduce reliance on gasoline and diesel. But many buyers and fleet managers confuse NGV, LPG, CNG and LNG. This guide clearly explains each term, their features and real usage in vehicle modification and public transport.
1. NGV (Natural Gas Vehicle)
Basic Definition: NGV is a general name for all cars running on natural gas. It is not a fuel type.
Two Types of NGVs: Factory-made natural gas vehicles; gasoline cars modified to use natural gas kits.
Main Application: City buses, taxis, logistics trucks and private cars.
Case in Peru: Cities like Lima, Trujillo and Callao widely use CNG NGV buses. They lower transport costs and reduce carbon pollution.
Fuel Match: NGVs use two fuel forms: CNG or LNG.
2. LPG (Liquefied Petroleum Gas)
Raw Material: LPG is propane, butane or their mixture. It comes from natural gas processing and oil refining.
Storage Feature: It turns into liquid under low pressure, easy to store in vehicle LPG tanks.
Market Popular Area: Europe, Asia and Latin America with complete LPG refuel stations.
Big Advantage: Dual-Fuel Cars: Most LPG vehicles switch freely between gasoline and LPG, flexible for fuel shortage.
Shortcoming: Lower energy density than CNG/LNG, so driving range will be shorter after conversion.
3. CNG (Compressed Natural Gas)
Composition & Storage: Main component methane. Gas is compressed to 1% of original volume and stored inside high-pressure vehicle cylinders.
Environmental Performance: Releases 30% less CO₂ than gasoline, much less nitrogen oxide and dust particles.
Common Users: Urban buses, taxis, private modified cars.
Peru Real Case: CNG city buses in Trujillo use 150m³ gas tanks. One full fill works 1.5 days and costs only 300 soles, very cheap for fleet companies.
Requirement: Need special high-pressure gas cylinders and complete CNG refuel station networks.
4. LNG (Liquefied Natural Gas)
Production Method: Cool natural gas down to -162°C to turn gas into liquid. Volume shrinks 600 times after liquefaction.
Best Application: Long-distance heavy trucks, ships and trains with large fuel demand.
Advantages: Same low-emission feature as CNG; higher energy density, longer driving range for heavy vehicles.
Limitations: Must use heat-insulated special tanks to avoid liquid gas evaporation. LNG production and refuel stations cost far more than CNG and LPG.
Summary: How To Distinguish NGV / LPG / CNG / LNG
NGV: Vehicle category, all natural gas-powered cars.
LPG: Propane/butane fuel, fit dual-fuel small passenger cars.
CNG: Compressed methane, perfect for city buses, taxis and daily short trips.
LNG: Super-cooled liquid natural gas, designed for long-distance heavy-duty transport.
Countries such as Peru keep building gas vehicle refuel stations and supporting clean fuel policies. Knowing these four terms helps fleet owners, car modifiers and buyers make cost-effective, eco-friendly choices.
Core Question Answered: What are NGV, LPG, CNG and LNG?
This comparison explains their features and usage, showing how clean gas fuels create low-carbon transport future.