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These forces are resolved into static and couple values for the inner and outer planes of the wheel, and compared to the unbalance tolerance (the maximum allowable manufacturing limits). If the tire is not checked, it has the potential to cause vibration in the suspension of the vehicle on which it is mounted.
The Clean Air Act of 1963 (CAA) was passed as an extension of the Air Pollution Control Act of 1955, encouraging the federal government via the United States Public Health Service under the then-Department of Health, Education, and Welfare (HEW) to encourage research and development towards reducing pollution and working with states to establish their own emission reduction programs.
Cars of under 1400 cc had to meet two subsequent sets of regulations that applied in October 1992 and October 1994 respectively. [58] French and Italian car manufacturers, strongly represented in the small car category, had been lobbying heavily against these regulations throughout the 1980s. [59]
Noise, vibration, and harshness (NVH), also known as noise and vibration (N&V), is the study and modification of the noise and vibration characteristics of vehicles, particularly cars and trucks. While noise and vibration can be readily measured, harshness is a subjective quality, and is measured either via jury evaluations, or with analytical ...
In a car, for example, such an engine with cylinders larger than about 500 cc/30 cuin [citation needed] (depending on a variety of factors) requires balance shafts to eliminate undesirable vibration. These take the form of a pair of balance shafts that rotate in opposite directions at twice engine speed, known as Lanchester shafts, after the ...
Section 202(a)(1) of the Clean Air Act requires the Administrator of the EPA to establish standards "applicable to the emission of any air pollutant from…new motor vehicles or new motor vehicle engines, which in [her] judgment cause, or contribute to, air pollution which may reasonably be anticipated to endanger public health or welfare" (emphasis added). [3]
During the 1930s and 1940s, the responsibilities of the commission continued to expand. By 1940, it had 500 employees. In 1967, the Highway Commission was merged with the Wisconsin Aeronautics Commission, Department of Motor Vehicles, and the Wisconsin State Patrol to form the Wisconsin Department of Transportation. [6]
A department of motor vehicles (DMV) is a government agency that administers motor vehicle registration and driver licensing. In countries with federal states such as in North America, these agencies are generally administered by subnational entities governments, while in unitary states such as many of those in Europe, DMVs are organized ...