Fortschritt E 516

The Fortschritt E 516 is a self-propelled combine harvester made by VEB Mähdrescherwerk Boschofswerda/Singwitz. It was developed in the late 1960s and first half of the 1970s, and after extensive testing in 1975, it was put into series production in 1977.[1] In 1983, the E 516's second generation, the Fortschritt E 516 B was introduced. It was discontinued in 1988 in favour of its successor, the Fortschritt E 517.

Fortschritt E 516
Fortschritt E 516 B
TypeAgricultural
ManufacturerVEB Mähdrescherwerk Bischofswerda/Singwitz
Production1977–1988
Length8690 mm
Width3200 mm (with 22.1/18–26 AS tyres)
Height3980 mm (including flashing beacon)
Weight10,020 kg (with 22.1/18–26 AS tyres)
PropulsionTyres
Engine model8 VD 14,5/12,5-1 SVW
Flywheel power
  • 162 kW (prototypes)
  • 168 kW (series production models)
Speed0…20 km/h (continuously variable hydraulic transmission)
Preceded byFortschritt E 512
Succeeded byFortschritt E 517

Technical description

The Fortschritt E 516 is a conventional straw-walker combine harvester, and has front-wheel drive with a continuously variable hydraulic transmission. The corn passes through the E 516 in longitudinal fashion. This means that it enters the combine in front, and gets pulled into the mid-mounted threshing drum; the straw exits the machine in back, after getting cleaned in the straw walkers, which are installed in the E 516's rear compartment. The Fortschritt E 516 can be used for several different types of corn; it can be used on slopes with an angle of up to 9.45°. From the factory, 6.7 m (22 ft) and 7.6 m (25 ft) headers, as well as 6 and 8 row maize-picker huskers were available.[2] The E 516's rated corn performance is 14,000 kg/h.[3]

The threshing drum has a width of 1625 mm and a diameter of 800 mm. It is equipped with 10 rasp bars.[4] It is driven by a belt, that is hydraulically adjustable in length (continuously variable transmission), in order to adjust the threshing drum speed. The speed is adjustable between 530 and 955 min−1.[5] The concave has an angle of 120°, 16 rasp bars, and an area of 1.43 m2.[4] Its distance from the threshing drum can be quickly adjusted in three steps using a lever in the driver's cabin;[6] fine adjusting is possible with a knob next to the lever.[7] The E 516 has five straw walkers with seven steps each; the total straw walker aera is 7.68 m2.[4]

The E 516 is powered by an IFA 8 VD 14,5/12,5-1 SVW four-stroke diesel engine. This engine is a naturally aspirated, water-cooled pushrod V8, with two camshafts, and four crossflow cylinder heads. It has a helix-controlled inline injection pump, and direct injection with hyperboloid-like shaped combustion chambers. With a cylinder bore of 125 mm and a stroke of 145 mm, it displaces 14.23 dm3.[8] The prototype versions were rated 162 kW at 2200 min−1;[1] the E 516's series production version had an output of 168 kW at 2200 min−1 and produced a maximum torque of 961 N·m at 1400 min−1.[8] The E 516 B's 8 VD 14,5/12,5-1 SVW engine had a reduced speed of 2000 min−1, but was still rated 168 kW.[9]

Fortschritt E 516 B

A series of tests, conducted during the 1980 corn harvesting season with several E 516 combines, equipped with Rába-made MAN D 2156 MT 6 and 8 VD 14,5/12,5-1 SVW engines, showed that reducing the 8 VD 14,5/12,5-1 SVW's engine speed by 200 min−1 would result in a reduction in fuel consumption of up to 15 %.[10] The updated 8 VD 14,5/12,5-1 SVW engine was installed in the E 516's second generation, the E 516 B. According to the manufacturer, the series production E 516 B has 10 % less fuel consumption whilst retaining the full engine power, compared to the first generation E 516. In addition to the updated engine, the E 516 B received new portal axles, new tyres, an improved cabine ventilation system, and an engine start protection system to prevent engine starting without the drive lever being in the neutral position.[9]

References
  1. G. Schmidt: Der Mähdrescher E 516 - eine neue Schlüsselmaschine des Maschinensystems Getreideproduktion und -verarbeitung, in agrartechnik, volume 26, number 5, May 1976, p. 211–213
  2. Kombnat Fortschritt Landmaschinen (ed.): Bedienanweisung Mähdrescher E 516, manual, May 1978, p. 7
  3. C. Noack, H. Jörns: Mähdrescher FORTSCHRITT E 517, in agrartechnik, volume 38, number 7, VEB Verlag Technik, 1988, p. 291
  4. Kombnat Fortschritt Landmaschinen (ed.): Bedienanweisung Mähdrescher E 516, manual, May 1978, p. 5
  5. Kombnat Fortschritt Landmaschinen (ed.): Bedienanweisung Mähdrescher E 516, manual, May 1978, p. 34
  6. Kombnat Fortschritt Landmaschinen (ed.): Bedienanweisung Mähdrescher E 516, manual, May 1978, p. 13
  7. Kombnat Fortschritt Landmaschinen (ed.): Bedienanweisung Mähdrescher E 516, manual, May 1978, p. 36
  8. Kombnat Fortschritt Landmaschinen (ed.): Bedienanweisung Mähdrescher E 516, manual, May 1978, p. 4
  9. Kombinat Fortschritt Landmaschinen (ed.): Mähdrescher Fortschritt E 516, brochure, 1986, p. 9
  10. G. Baumhekel, A. Peters, G. Richter: Untersuchungen zur Senkung des spezifischen DK-Verbrauchs beim Einsatz des Mähdreschers E 516, in agrartechnik, volume 31, number 4, April 1981, p. 156–158
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