内容简介：: 黑龙江工程学院本科生毕业设计附录BDual Clutch Transmission (Dual Clutch Transmission, hereinafter referred to as DCT) is the current development of the most rapidly, which, in the new gearbox traditional manual gearbox as the foundation to join two Clutch and electronic components, obtains the excellent performance and good fuel economy. Has become the variable valve timing, variable valve lift, turbocharged and cylinder direct injection after another a technology window. Simple speaking DCT are two traditional manual gearbox assembly (for the odd and even respectively block), having two clutch, two of the input shaft, but only a single output shaft. The separation of the clutch, and block a switch and engage in the computer controlled through hydraulic mechanism, so also can provide control manual shift patterns. Power transfer efficiency high (low), means that the fuel consumption of the block a switch quickly and cost less than traditional automatic transmission is double the clutch gearbox three advantages, so to get more and more widely. Dual clutch transmission by French Adolphe Kegresse before world war ii, plan for invention with legendary Citroen, but at that time the market breaks condition is not suitable for business applications. Two clutch gearbox waiting for the half a century after the civil cars equipped with. In the 1980 s, the developed by the global porsche, for the first time, two clutch transmission using electronic control system will double the clutch gearbox structure compact enough to be called Doppelkupplungsgetriebe (German, PDK), referred to. The first two clutch PDK transmission beat equipped with 956 and 962 le mans, and audi Quattro racing Sport car, and obtain the S1 rally not common record. But playing with the market there exists considerable distance, after all, two clutch and spent twenty years lower costs and enhance the durability to realize commercial success. The public in 2002 for golf R32 (the fourth generation of golf, PQ34 platform, 2003 of DSG) with (Direct-vw) two clutch transmission Shift, this is the first time two clutch Gearbox equipped with mass production car. Compared with the traditional automatic transmission, the public this machine DSG tell the hy

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