Emissions level

Emissions

Emissions in a controlled engine environment are managed by the design of the engine map. According to the desired levels of resultant emissions, the precise level of emissions is set to be achieved in an operational environment. By way of example the following are achieved in current markets.

Singapore – Dedicated CNG
  • 98% reduction in ‘PM2.5′
  • 15-30% lower CO2
  • Zero CO
  • 95% reduction in methane HC (harmless and non-cacogenic) with the fitting of a catalyst
  • NOx reduced by 60%
Australia – Dedicated CNG/LNG/LPG – (HD5 propane)
  • 98% reduction in ‘PM2.5′
  • 24% lower CO2
  • Zero CO on natural gas, minimal CO on LPG
  • Minimal HC (harmless and non-cacogenic) There are minimal HC in LPG
  • NOx reduced by 60%
Australia – Dedicated CNG/LNG
  • 98% reduction in ‘PM2.5′
  • 24% lower CO2
  • Zero CO on natural gas, minimal CO on LPG
  • Minimal HC (harmless and non-cacogenic) There are minimal HC in LPG
  • NOx reduced by 60%
United Kingdom – Dedicated LPG (HD5 Propane)
  • 98% reduction in ‘PM 2.5′
  • 15-30% lower CO2
  • Minimal CO
  • Minimal HC (harmless and non-cacogenic) There are minimal HC in LPG
  • NOx reduced by 60%

Gastech Technology is not a fumigation system. Fumigation systems (dual fuel and dedicated) are supply systems that flood the inlet manifold with fuel in an uncontrolled amount into an open cylinder and suffer from the following disadvantages.

  • Engine performance is considerably lower than the original diesel output and in particular in high ambient temperatures
  • Fuel economy is worse than diesel only
  • Emissions are only improved with lower particulates (pm) and CO, with HC reduced according to the level of gas as a % of the fuel mix.