- #AQMD REQUIREMENTS FOR TEMPORARY IC ENGINES HOW TO#
- #AQMD REQUIREMENTS FOR TEMPORARY IC ENGINES FULL#
There are also three types of visible smoke that may be produced during the diesel fuel combustion process. The quantity and composition of diesel engine exhaust emissions vary depending on:
#AQMD REQUIREMENTS FOR TEMPORARY IC ENGINES FULL#
Diesel engines produce very little carbon monoxide as they burn the fuel in excess air even at full load. In addition to nitrogen oxides, diesel engines produce carbon (soot), sulphur oxides, for example, sulphur dioxide, aldehydes, ketones, alcohols, nitrogen, hydrocarbons, polycyclic aromatic hydrocarbons and water. It was reported in 2012 that although total nitrogen oxides from petrol/gasoline cars have decreased by around 96% through adoption of exhaust catalyst, diesel cars still produce nitrogen oxides at a similar level to those bought a decade and a half ago under real world tests, resulting in diesel cars emit around 20 times more nitrogen oxides than petrol/gasoline cars Footnote 1. However, the fine particulate matter in the exhaust emissions (sometimes visible as opaque dark-coloured smoke) has traditionally been of greater concern, as it presents different health concerns and is rarely produced in significant quantities by spart-ignition engines. Modern on-road diesel engines typically use selective non-catalytic reduction to meet emissions laws, as other methods such as exhaust gas recirculation cannot adequately reduce nitrogen oxides to meet newer standards in many jurisdictions. The lean-burning nature of diesel engines and the high temperatures and pressures of the combustion process result in significant production of nitrogen oxides, and provide a unique challenge in reducing these compounds. The Guideline will be particularly useful for industrial hygiene specialists and health and safety professionals who may be recommending or installing different control measures that are appropriate for federal jurisdiction legislative and meet regulatory requirements.
#AQMD REQUIREMENTS FOR TEMPORARY IC ENGINES HOW TO#
This guideline has been developed by the Labour Program to assist federally regulated workplace parties understand how to manage and control exposure to diesel engine exhaust emissions (DEEEs) in the work place, and for identifying in which work places this hazard is commonly found.