King Engines | BMW R 1200 GS 2013 | The all-new 2-cylinder opposed twin in the R 1200 GS. Capacity of 1170 cc, as in the previous model, the ratio of diameter to 73 mm up to 101 bubbles was maintained. The curb weight (in running order) DIN R 1200 GS is 238 kg including standard BMW Motorrad Integral ABS. The boxer engine in the new R 1200 GS to continue using air / coolant cooling of the oil, but a mixture of water and glycol, replaced for the first time in a BMW boxer engine. This ensures a high heat absorption capacity of coolant to the heat transfer more efficient. That means that precision cooling the coolant, the heat exposed parts of the engine much Both cylinder heads and cylinder parts Heat through two radiators mounted left and right of the front part. Thanks to the cold air duct demanding hot air ducts on either side behind the driver. The engine is cooling air, which reduces the size of the radiator and maintains the piston engine characteristic appearance. The new cooling system is very compact, succeeded in a significant improvement of the cooling rate and thus the thermal system in comparison with the previous model (22% oil cooling / air 78%) in the BMW GS 1200 (65 35% coolant / air%) .
The engine of the new BMW R 1200 GS flow is vertical unlike any previous BMW Motorrad opposition standard with two cylinders. The advantage is that the design of the inlet channel is no longer dependent on the cam, so could detect both sides identical lengths cylinder intake air quantity. The result is improved energy efficiency and torque over the entire speed range and low fuel consumption. As in the previous model, the two camshafts made of hardened steel are arranged horizontally. By a chain, which on the shaft behind the cylinders (right of the motor shaft and the counterweight is to the left of the crankshaft) driven The timing chain drives an intermediate shaft between the camshaft and exhaust valves, and it is here that the power is transferred to the camshaft by pairs of spur gears. At 8 degrees on the intake side and 10 degrees on the exhaust side, the four valves are close to each other is bent to form compact combustion chamber making - a feature that is important for optimum combustion to achieve. The diameter of the valve plate is also enhanced to provide a higher output torque and efficiency to achieve. 1.0 mm larger. Having a size of 40 mm on the inlet side and 34 mm on the outlet side, the diameter of the valve stem with 5.5 mm as before. Significantly shorter valve springs the level of the engine speed increases and still maintain an optimal effect drag.
As before, the valves by light-resistant rocker, whose design of the high yield of 4-cylinder BMW S 1000 RR is operated derivedBy 0.10 to 0.17 mm at the inlet side, and from 0.34 to 0.41 mm at the outlet side, the valves are lower than the previous model. The main bearing diameter was calculated from the last 60 mm to 55 mm to reduce the drag forces This ensures that the new engine of the R 1200 GS, with the highest level of engine speed, comfortable and with less vibration perceptible over the entire speed range and high speeds in particular. Vertically separated case in open-deck design - For the first time in a BMW boxer engine, the cylinders are no longer separately bolted to the crankcase, but they are directly integrated. The two halves of the housing form a composite material of high rigidity in the cylinder block and the direction of the crankshaft. Designed with the cylinder cooling jacket opening with a lid. The liners are a low-friction, low wear and iron-carbon alloy with a new main arc spraying method (LDS), coated and used BMW car engines.
For the first time in the history of BMW Motorrad, the gearbox and clutch integrated in the motor housing of a boxer. Besides saving space and weight, the new transmission (two axles, a drive shaft, an output shaft), which. The six gears of the new R 1200 GS was also redefined the changing demand for light and precise connections and changing for optimum driving dynamics. As a result, the newly calculated ratios. As before, the axes of the new gear motor on bearings and gears (roller) installed properly on needle bearings. The new R 1200 GS is the first production car, the BMW Motorrad Boxer motrcycle a wet multi-plate clutch friction discs with eight instead of single dry plate clutch. The advantages of this solution are described in the moment of inertia on the one hand due to the significantly reduced outer diameter of 147 mm (R 1200 for GS: 180 mm), but also compact. In that sense, BMW refers specifically travel to the needs of the new R 1200 GS Road ambitious pilots. The motor is transmitted to the rear brake torque at a lower level during idling. The practical level of hand strength and fine control options by the significant improvement of the labor force the link to ensure that the high standards of BMW Motorrad are met in terms of performance and comfort. In connection with sensitive throttle response, makes this an optimal vehicle control in all types of terrain.
For over two decades, BMW Motorrad has a leading position in the electronic engine management is busy, and in the case of the new R 1200 GS is maintained by the new digital motor control, call the BMS-X. The main features are fully sequential injection, a compact design and low weight. Alpha / n system management interface engine torque to a large number of parameters. For example, the output torque and perfectly controlled adaptive response to a wide range of conditions of gas properties of the different driving modes E-occupied. The control is based on the intake air is indirectly determined by the angle of the throttle and engine speed. Based on the additional engine and ambient parameters (including engine temperature, air temperature and air pressure), the engine control system individual level by injection volume and ignition timing, along with the established custom stored mapping characteristics and pre -processing tools. Carburettor opening width of an electronic system through an injection valve for a gas valve of 52 mm instead of 50 mm should be given. New design masks significantly increased air supply and a large airbox with air filter panel provide optimum fresh air supply and optimum loading properly.Electromotive drive gas is used to control the two valves.
The electric motor drive gas in the GS 1200 BMW R is rideability improved and optimized smoothness in the range of approximately stationary because the engine controller determines compensates for the difference between the two cylinders with respect to the average pressure, and, by selectively adjusting the throttle angle . Even the former R 1200 GS offers highly responsive, making almost nothing in terms of handling, precise steering to be desired, steering precision and stability at high speeds. The steering angle increased slightly to 64.5 degrees. Rueda Rueda is virtually identical, having 101 millimeters and 99.6 millimeters now. Length 535.6 mm (measured from the center of rotation of the rear half swing), the new number is 588 millimeters. Compared to the size 110/80-19 tires at the front, Tire expands the optimal weight 10-spoke alloy wheels, with 3.0 inches (2.5 centimeters above) a larger contact surface, the effect of the production of higher transferable cornering and braking powers. A special tire contour adapted to the new R 1200 GS for maximum cornering speed ensures neutrality and highest precision driving Cornering dynamics and eventually even while R 1200 GS above could provide a tire 150/70 R17 at the rear, size 170/60 R17 tires are significantly larger contact area for improved stability during cornering and traction. According to the new tire size, tire width also weight-optimized 10-spoke alloy rear wheels also increased from 4.0 to 4.5 inches.
And in the R 1200 GS, the BMW Motorrad extensive programming options also be equipped with cross-spoke wheels, in particular for off-road to increase. The braking system of the BMW R 1200 GS - all BMW motorcycles as with ABS as standard - has been extensively revised. Anchoring radial Brembo monobloc calipers with a piston diameter of 32 mm (formerly 34 and 36 mm) are installed. The diameter of the main brake cylinder pump has been reduced from 16 to 15 millimeters. The rear brake is only a 2-piston floating caliper with a piston diameter of 28 mm. Meanwhile, the disk diameter increases the size of 265-276 mm. The length of the inner leg is now at a height 1870 mm 850 mm (20 mm model) or 1910 mm to 870 mm Seat height (mm -30 to predecessor). The new double-butted aluminum steerer tubes are increased in size in the assembly from 28.5 to 32 mm. The passenger seat assembly has also a function for adjusting the length. The forward position allows the passenger to choose a position closer to the driver's seat. A tendency to luxury seats Poet significant contact between the driver and the passenger stability and agility by accelerating the benefits of a support pilot basin in the front passenger seat also.
There are adjustable floor (820 mm) and higher (870 mm) seat and the seat rally. The emergency lighting are integrated by a separate switch activates clearly visible in the left side of the steering panel. The functions for low beam, high beam and head-light combined in a switch located in the vicinity of the left index finger for easy access. The activation of the handles includes heating and compact enough distance in the control unit on the right. As for the illumination of the road also provides a high degree of lighting, both low beam and high. Extensive testing in the light channel BMW Group have generated light - the light of the illuminating surface itself - much better results in terms of transparency and vision for driving at night, compared to the competition. BMW Motorrad offers additional DRL with LED technology as a factory option. Daylight is a light sensor automatically or manually activated headlights instead of the "daylight" switch. Unique in the world, this LED flashlight with key function daytime running lights the way with a brilliant brightness level previously unknown. The light consists of two LED units each for high and low beam, and four other units of the LED daytime running lights and parking lights. The geometric Telelever for use in the new R 1200 GS is refined and excellent functions are optimized. While maintaining the same degree of stiffness, the diameter of the control tube telescopic fork 41 is only reduced to 37 mm. In combination with a stiff arm designed end, the overall result was an even greater steering precision and feedback transparent front. Despite the large extended length of the arm, the torsional stiffness of Paralever same as in the previous model.
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