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Variable camshaft timing. Variable camshaft timing ( VCT) is an automobile variable valve timing technology developed by Ford. It allows for more optimum engine performance, reduced emissions, and increased fuel efficiency compared to engines with fixed camshafts. It uses electronically controlled hydraulic valves that direct high pressure ...
United States vehicle emission standards are set through a combination of legislative mandates enacted by Congress through Clean Air Act (CAA) amendments from 1970 onwards, and executive regulations managed nationally by the Environmental Protection Agency (EPA), and more recently along with the National Highway Traffic Safety Administration (NHTSA). These standard cover common motor vehicle ...
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. Starting in the 1950s and 1960s, various ...
Super ultra-low emissions vehicle ( SULEV) is a U.S. classification for passenger vehicle emissions. The classification is based on producing 90% fewer emissions than the average gasoline-powered vehicle. [1] The SULEV standard is stricter than the standard for LEV ( low emission vehicle) and ULEV ( ultra-low-emission vehicle ), however not as ...
The Germany-based automaker said it "significantly improved the sporty vehicle’s range, performance, charging, and handling" with its updates to the e-tron GT lineup.
Data centers and electric vehicles are expected to ramp up U.S. power demand by about 300 terawatt-hours (TWh), equivalent to the electricity consumed annually by Turkey, by the end of the decade ...
An emission performance standard is a limit that sets thresholds above which a different type of vehicle emissions control technology might be needed.
Automotive research firm J.D. Power’s highly watched initial quality study is out — and it appears EVs are giving consumers big headaches.