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The PCV system was designed to re-circulate the gases into the air intake so that they could be combined with the fresh air/fuel and get more completely combusted. In 1961, California regulations required that all new cars be sold with a PCV system, therefore representing the first implementation of a vehicle emissions control device. [6]
New cars produced in the early 1990s contained the new refrigerant in their air conditioning systems. Owners of older cars with R-12 systems would either have to invest in an R-12 to R-134a conversion system, buy a new car, or find a qualified technician to recharge their older R-12 system. R-134a has been used in cars for almost 30 years.
Vehicle emissions control is the study of reducing the emissions produced by motor vehicles, especially internal combustion engines.The primary emissions studied include hydrocarbons, volatile organic compounds, carbon monoxide, carbon dioxide, nitrogen oxides, particulate matter, and sulfur oxides.
A relatively small part of combustion gas is undesirable, noxious, or toxic substances, such as carbon monoxide (CO) from incomplete combustion, hydrocarbons (properly indicated as C x H y, but typically shown simply as "HC" on emissions-test slips) from unburnt fuel, nitrogen oxides (NO x) from excessive combustion temperatures, and ...
Residents of Ohio community allowed to return after chemical leak from railroad car forced evacuations. Artemis Moshtaghian, Melissa Alonso and Taylor Romine, CNN. September 25, 2024 at 6:47 PM.
A detailed inventory of greenhouse gas emissions from upstream oil and gas activities in Canada for the year 2000 estimated that fugitive equipment leaks had a global warming potential equivalent to the release of 17 million metric tonnes of carbon dioxide, or 12 percent of all greenhouse gases emitted by the sector, [9] while another report put fugitive emissions at 5.2% of world greenhouse ...
8:30 a.m.: News briefing on the train car styrene leak. Crews worked overnight to cool a rail tanker that began leaking a toxic chemical Tuesday afternoon in Whitewater Township, officials said.
Sep. 21—Chris Sisney doesn't bother washing his car anymore. He lives off a dirt road; a water leak two blocks away rushes down the road, keeping it constantly muddy. "I can't even get out ...