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Steptronic-equipped E39 Replaced June 22 nike air max plus tn all white , 2012 | Author: jacobthompson | Posted in Others
The BMW E39 is the BMW 5 Series made between 1995 and 2003. The E39 was the successor of the BMW E34 in 1995, and itself was replaced by the E60 platform in 2003. Sales to Germany and the United Kingdom began in 1995, and by 1996 sales to the rest of the world had commenced. A mid-generational refresh appeared in 2001, featuring minute detail changes. At launch, the base model was the 520i, which developed 112 kilowatts (150 hp) in the pre-update models, and 126 kilowatts (170 hp) in later models. An M5 variant was introduced in 1998, with a 4.9 litre S62 V8 engine. All models but the M5 were available as either a saloon or a estate, the latter called Touring.
Introduced in Europe in 1995, the complete vehicle redesign draws heavily from the E38 7 Series in body construction and electronic technology. The mid-level BMW saloon showed evolutionary styling changes rather than a dramatic redesign. Initially offered only as a saloon, the wheelbase grew by 68 millimetres (2.7 in) and overall length by 55 millimetres (2.2 in) over the previous 5-series, the E34. In the US, the new 5 Series came in two forms: the 528i and 540i. The 1996 528i introduced a new M52 in-line six that it shared with the E36 328i, the 540i a 4.4 litre M62 V8 shared with the E38 740i. Both engines were upgraded over the prior 5 Series generation. The 2.8 litre dual overhead camshaft six-cylinder engine made 141 kilowatts (190 hp), versus 210 kilowatts (282 hp) for the 4.4 litre dual overhead camshaft, all-aluminum V8. A ZF five-speed manual transmission without overdrive was standard on the 528i, with an optional A4S 310 R four-speed automatic. The 540i, in contrast, could have either a Getrag six-speed manual or a new five-speed A5S 560Z automatic transmission with adaptive transmission control. Standard equipment on both models included dual front and side airbags, anti-lock brakes, traction control, power steering nike air max tn black and green , and air conditioning.
Engineering[edit] BodyThe E39 all-steel body acts as a safety cage for occupant protection. The structural rigidity of the monocoque was increased using computer-aided engineering. This allows key points to be reinforced, to increase rigidity, without significantly adding to the weight. The overall increase is 10 kilograms (20 lb), which is offset by the aluminium suspension. Laser welding techniques ensure rigid bonding throughout.[8] Another area of focus in the design of the body was in structural dynamics. The body was designed so that the frequencies for torsional twisting and bending are in separate ranges and above natural frequency. These frequencies are out of the range of engine and driveline vibrations; thus they will not amplify them.
The aerodynamically designed body and features of the E39 gave the 528i and 540i, 0.28 and 0.31 drag coefficients respectively. Torsional rigidity was also increased over the E34, by 40 percent. The chassis was so stiff that the rigidity was unchanged for the E60 model. This added stiffness allows the suspension to work with more accuracy. It also allows total engineering of ride quality through the suspension; rather than in combination with body flex.[9]
Steering and suspensionWith the E39, two steering types and double pivot, MacPherson strut suspensions systems are used. For the 520i-530i models, BMW, for the first time in a 5 series, utilised rack and pinion steering.This not only offers weight reductions over the recirculating ball type used on the V8s, but also provides quicker steering response through its variable ratio, as well as a more precise feel. This system steers from the front of the axle.
Interior showcasing the updated E39′s interior with widescreen navigation & TV.Six-cylinder models also receive an aluminium front subframe. The struts use aluminium “Tension Link” that comes from a forward position back to the front of the wheel and an aluminium horizontal link to locate them. Aluminium is used for the steering knuckles, outer strut tube, and the spring pads; saving 21 kilograms (46 lb).
BMW 530i (E39) Sport sedan (Australia)
BMW 525i station wagon (Japan)With the 540i, BMW retained the front steering and suspension from the previous E34 540i with the design based on the E38 7 Series. The physical size, dimensions, and weight of the V8 engine required the use of the older recirculating ball steering. This system steers from the back side of the axle. The front subframe is steel. To compensate for the heavier front end, BMW used extra aluminium in components including the steering box, steering knuckles, outer strut tube, and the spring pads. The struts are located by an aluminium “Thrust Link” that comes from the rear to meet the back of the wheel and an aluminium horizontal link.
The E39 employs similar design to the E38 7 Series for the rear suspension nike air max tn black orange , regardless of the model specified. This “four-link integral rear suspension” or “Z-link” axle was first introduced on the BMW Z1. With this, Chapman struts are utilised. Through precise toe angle changes, stable yet responsive handling without unwanted toe change effects under load is achieved.
Engine specifications Various engine sizes and configurations have been available. The North American market saw the 525i, 528i, 530i, 540i and M5. The European range was however, more diverse, with BMW offering the 520i, 523i, 525i, 528i, 530i, 535i, 540i, 525tds, 520d (the only four-cylinder 5-Series engine on this generation), 525d, 530d and M5.
Flexible Electronics DesignSince the start of production the entire in-car entertainment system (Radio Function, Navigation System, Television and Telecommunications systems) is based on a very flexible automotive computer system.As a result the E39 models can all be easily upgraded with th锘緽ALTIMORE.
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