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Chassis Dynamometer
A chassis dynamometer, informally referred to as a rolling road or a dyno, is a mechanical device that uses one or more fixed roller assemblies to simulate different road conditions within a controlled environment, and is used for a wide variety of vehicle testing and development purposes. Chassis dynamometer types There are many types of chassis dynamometer according to the target application - for example, emissions measurement, miles accumulation chassis dynamometer (MACD), Noise-Vibration-Harshness (NVH or "Acoustic") Application, Electromagnetic Compatibility (EMC) testing, end of line (EOL) tests, performance measurement and tuning. Another basic division is by type of vehicle - motorcycles, cars, trucks, tractors or the size of the roller - mostly 25", 48", 72", but also any other. Modern dynamometers used for development are mostly one roller to the wheel construction, and the vehicle wheel is placed on the top of the roller. Older constructional solutions are two roller ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
4x4 Dynamometer
A four-wheel drive, also called 4×4 ("four by four") or 4WD, is a two-axled vehicle drivetrain capable of providing torque to all of its wheels simultaneously. It may be full-time or on-demand, and is typically linked via a transfer case providing an additional output drive shaft and, in many instances, additional Gear train, gear ranges. A four-wheel drive vehicle with torque supplied to both axles is described as AWD (vehicle), "all-wheel drive" (AWD). However, "four-wheel drive" typically refers to a set of specific components and functions, and intended off-road application, which generally complies with modern use of the terminology. Definitions Four-wheel-drive systems were developed in many different markets and used in many different vehicle platforms. There is no universally accepted set of terminology that describes the various architectures and functions. The terms used by various manufacturers often reflect marketing rather than engineering considerations or signif ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
004 Car Dyno Testing - New Car Test Of Opel Astra K At Opel Factory In Gliwice, Poland
4 (four) is a number, numeral and digit. It is the natural number following 3 and preceding 5. It is a square number, the smallest semiprime and composite number, and is considered unlucky in many East Asian cultures. Evolution of the Hindu-Arabic digit Brahmic numerals represented 1, 2, and 3 with as many lines. 4 was simplified by joining its four lines into a cross that looks like the modern plus sign. The Shunga would add a horizontal line on top of the digit, and the Kshatrapa and Pallava evolved the digit to a point where the speed of writing was a secondary concern. The Arabs' 4 still had the early concept of the cross, but for the sake of efficiency, was made in one stroke by connecting the "western" end to the "northern" end; the "eastern" end was finished off with a curve. The Europeans dropped the finishing curve and gradually made the digit less cursive, ending up with a digit very close to the original Brahmin cross. While the shape of the character fo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
