page_title: Ikarus 256
section_title: Technical description
hierarchical_section_title: Ikarus 256 / Technical description
caption_attribution_description: English: Ikarus 256 bus in Orosháza, Hungary Magyar: A Körös Volán egyik Ikarus 256-os autóbusza Orosházán, az autóbusz-állomáson.
context_page_description: The Ikarus 256 is a high-floor bus used as a coach for long-distance service and for interurban traffic. It was made from 1977–1989, alongside the larger Ikarus 250, by the Hungarian bus manufacturer Ikarus.
context_section_description: Designed as a high-floor two-axle bus, the Ikarus 256 has a semi-self supporting body, with the engine installed under the floor at the back, following the configuration pioneered in West Germany by Setra in the 1950s and 1960s.  The body platform incorporates two airsprung beam axles, with the rear axle being a planetary axle. The axles have two hydraulic shock absorbers each. Twin tyres are fitted on the rear axle, whilst single tyres are fitted on the front axle. Their size is 10–20″. The steering system is a hydraulically assisted ball-and-nut steering system. In total, the bus has three different braking systems: A pneumatic dual-circuit braking system, an exhaust braking system and a spring-loaded parking brake.
  An MAN D 2156 engine, built under licence by Rába, powers the bus.  It is a straight six-cylinder, naturally aspirated, liquid-cooled, Diesel engine with direct injection, displacing 10.35 litres (632 cu in). The rated power (DIN 70020) is 192 PS (141 kW; 189 hp), the rated torque (DIN 70020) 71 kp⋅m (696 N⋅m). The torque is transmitted to a fully synchronised five-speed gearbox via a single-disc dry-clutch; a six-plus-one-speed gearbox was also available as a factory option. With the default five-speed gearbox, the bus can reach a top speed of 106 km/h. It seats up to 45 passengers.
caption: Ikarus 256 bus in Orosháza, Hungary in  October 2009
exif: {"Image ImageDescription": "OLYMPUS DIGITAL CAMERA", "Image Make": "OLYMPUS IMAGING CORP.", "Image Model": "FE20,X15,C25", "Image Orientation": "Horizontal (normal)", "Image XResolution": "314", "Image YResolution": "314", "Image ResolutionUnit": "Pixels/Inch", "Image Software": "1.0", "Image DateTime": "2009:10:01 17:27:56", "Image YCbCrPositioning": "Co-sited", "Image ExifOffset": "842", "Image PrintIM": "[80, 114, 105, 110, 116, 73, 77, 0, 48, 51, 48, 48, 0, 0, 37, 0, 1, 0, 20, 0, ... ]", "Thumbnail Compression": "JPEG (old-style)", "Thumbnail XResolution": "72", "Thumbnail YResolution": "72", "Thumbnail ResolutionUnit": "Pixels/Inch", "Thumbnail JPEGInterchangeFormat": "3870", "Thumbnail JPEGInterchangeFormatLength": "9886", "EXIF ExposureTime": "1/40", "EXIF FNumber": "39/10", "EXIF ExposureProgram": "Program Creative", "EXIF ISOSpeedRatings": "100", "EXIF ExifVersion": "0221", "EXIF DateTimeOriginal": "2009:10:01 17:27:56", "EXIF DateTimeDigitized": "2009:10:01 17:27:56", "EXIF ComponentsConfiguration": "YCbCr", "EXIF ExposureBiasValue": "0", "EXIF MaxApertureValue": "163/50", "EXIF MeteringMode": "CenterWeightedAverage", "EXIF LightSource": "Unknown", "EXIF Flash": "Flash fired, compulsory flash mode", "EXIF FocalLength": "93/10", "EXIF FlashPixVersion": "0100", "EXIF ColorSpace": "sRGB", "EXIF ExifImageWidth": "3264", "EXIF ExifImageLength": "2448", "Interoperability InteroperabilityIndex": "R98", "Interoperability InteroperabilityVersion": "[48, 49, 48, 48]", "EXIF InteroperabilityOffset": "3746", "EXIF FileSource": "Digital Camera", "EXIF CustomRendered": "Normal", "EXIF ExposureMode": "Auto Exposure", "EXIF WhiteBalance": "Auto", "EXIF DigitalZoomRatio": "1", "EXIF FocalLengthIn35mmFilm": "53", "EXIF SceneCaptureType": "Standard", "EXIF GainControl": "Low gain up", "EXIF Contrast": "Normal", "EXIF Saturation": "Normal", "EXIF Sharpness": "Normal"}