Converting a Gasoline Car Like the Honda Accord to Use LPG

Summary

In Spain, nearly any petrol car manufactured after 2001 can be converted to run on LPG. This conversion, while not a complete solution to environmental issues, significantly reduces pollution and is more cost-effective than gasoline. Ircon-Gas, a pioneering company in Madrid, has been transforming cars for nearly 30 years. The conversion process involves minimal modifications and offers substantial benefits, including reduced CO2 emissions and lower fuel costs.

The Rise of LPG Conversions in Spain

Historical Context

Ircon-Gas, located in Mendez, Madrid, has been at the forefront of converting gasoline cars to LPG for nearly three decades. According to Nacho Perez, the sales manager, the company has seen a significant increase in demand. "Last year, we billed five times more than the previous year, and this year is following the same trend," he says. Initially, LPG conversions were restricted to taxis, but regulatory changes have made this option available to all drivers.

Types of Gas: LPG vs. CNG

Petrol cars can be adapted to use two types of gas: liquefied petroleum gas (LPG) and compressed natural gas (CNG). LPG, also known as Auto-gas, is the more common option. According to the Spanish Association of Operators of Liquefied Petroleum Gas (Aoglp), LPG produces up to 10.9% less CO2 than gasoline and significantly reduces NOx and particulate emissions, which are major contributors to urban air pollution (source).

CNG, on the other hand, has even lower CO2 emissions but is less accessible for the average consumer. "In countries with a significant number of gas-powered vehicles, LPG was developed first, and once the market matured, CNG followed," explains Perez.

Conversion Process

Step-by-Step Guide

1. Approved Kit Installation: The conversion requires an approved kit, which involves minimal engine modifications, such as a small hole in the intake manifold.
2. Tank Placement: The LPG tank is usually placed in the spare wheel well, replacing the spare tire with a tire repair kit.
3. Fuel Line Installation: A fuel line carries the LPG from the tank to the engine, where it is converted from liquid to gas before being injected into the intake manifold.

Differences Between LPG and CNG

• Storage: LPG is stored in liquid form at about 10 bar pressure, allowing for a compact tank that fits in the spare wheel well. CNG, however, requires high-pressure storage (200-215 bars) in larger, elongated cylinders.
• Range: LPG offers a range of approximately 500 km per tank, while CNG has a shorter range, necessitating multiple cylinders.
• Refueling Stations: Spain has around 100 LPG refueling stations, with plans to double this number. In contrast, there are only three CNG stations, located in Barcelona, Madrid, and Valencia (source).

Environmental and Economic Benefits

Reduced Emissions

LPG conversions can significantly reduce a vehicle's environmental impact. According to the European Environment Agency, LPG vehicles emit 10-15% less CO2 compared to their gasoline counterparts (source). Additionally, they produce fewer NOx emissions and virtually no particulate matter, making them a cleaner alternative.

Cost Savings

The cost of LPG is generally lower than gasoline. In Spain, LPG costs about 50% less per liter than gasoline, leading to substantial savings over time. For example, a driver covering 20,000 km annually could save up to €1,000 per year on fuel costs.

Case Study: Hybrid Conversions

Ircon-Gas is also working on converting hybrid vehicles to run on LPG. In their Madrid workshop, they are currently converting a Toyota Prius into a "Trifuel" vehicle, capable of running on electricity, gasoline, and LPG. This innovative approach offers even greater flexibility and cost savings for drivers.

Conclusion

Converting a gasoline car to run on LPG is a viable and increasingly popular option in Spain. With minimal modifications, significant cost savings, and reduced environmental impact, it's an attractive alternative for many drivers. As the infrastructure for LPG refueling continues to expand, this trend is likely to grow, offering a cleaner and more economical way to drive.

For more information on the benefits of LPG and the conversion process, visit the Spanish Association of Operators of Liquefied Petroleum Gas and Repsol.