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Diesel exhaust also has environmental impacts. PM from diesel engines contribute to haze, which restricts visibility. In addition, diesel exhaust contributes to ozone formation.

Running vehicles on natural gas has a positive effect on the risks as outlined above, examples include:

CO2 – up to 10% reduction compared to Diesel.
Particulate emissions – reduced by 99%.
Carbon Monoxide – reduced by 90%.
Benzene – reduced by 97- 99%.
Nitrous Oxide – reduced by 85%.
Lead and sulphur – 100% reduction.
Gas engines are also quieter than diesel engines.

There is an innovative range of core components for delivering CNG to electronic multi-point gas injection systems for bus and heavy duty vehicle applications for OEM and aftermarket customers.

The new Vapourized Sequential Injection System has been developed in such a way that, with very few component changes, it can be used for CNG applications. The VSI System has the following advantages:

• Only one single ECU is required for up to and including 10 cylinder engines
• Vehicles with engine capacities ranging from 700cc to 6.0 liters can use the same pressure reducer
• Excellent emission reduction results

With CNG fuel available in most countries for less than half the cost of unleaded gasoline, converting vehicles to these fuels will result in significant reductions in running costs for private motorists and fleet users alike. The after-market conversion costs can be recovered, in most cases, within 18 months or much faster “IF” Government subsidies and tax incentives are available.