Mercedes-Benz O 322
Mercedes Benz | |
---|---|
O 322 | |
Manufacturer | Daimler Benz |
design type | Public bus |
Production period | 1959-1964 |
axes | 2 |
power | 110-126 hp |
length | 9.955 m |
width | 2.5 m |
height | 2.8 m |
Seats | 36 |
Standing room | 50 |
Empty weight | 6200 kg |
successor | O 352 (not in Germany) |
Similar models | Magirus-Deutz Saturn II , MAN Metrobus |
The Mercedes-Benz O 322 is a city bus from the Mercedes-Benz brand , which Daimler-Benz AG built from 1959 to 1964.
Model overview
The O 322 was presented at the IAA in 1959 and launched in 1960 as the company's first pure city bus. Only one model was built and advertised with the formula "1-10-100 = 322", which meant that a driver could carry almost 100 passengers in a bus that was almost ten meters long. The bus stop brake and the hydrostatic fan drive were new features compared to earlier buses . The bus could easily be fixed during a short stop at the bus stop and the cooling fan did not run continuously, but only from a cooling water temperature of 84 ° C upwards.
Visually, the bus was still similar to the O 317 , but had significantly larger side windows and no longer exposed wheel arches. As a rule, the structure was two-door (front / center; with some units also front / rear). The Herne-Castrop-Rauxel tram is said to have had a three-door version with the number 48.
The O 322 underwent a facelift in the summer of 1961, in which the front section was changed. The windshield was curved more forward and the edge of the roof was pulled further forward. The pre-chamber engines of the type OM 321 with 5.1 l displacement and an output of 81 kW (110 DIN PS) were replaced by the technically similar engines of the type OM 322, which from 5.7 l displacement 93 kW (126 DIN PS) ) Afford. The four-speed gearbox of the Daimler-Benz G 32 type was expanded to include a shorter gear less than the first gear, the other gears remained unchanged; the previous first gear of the four-speed transmission is simply second gear in the five-speed transmission (and so on). Since the first gear of the gearbox was now shorter, the gear ratio from the gearbox to the rear axle could be lengthened, which means that the engine can be driven at a constant speed with a lower engine speed and a higher top speed can be achieved.
Of the standard air-sprung bus with rear engine, only about 950 copies were built. One of the reasons was probably the replacement of the pure prechamber system with direct injection, for example in the successor model O 352 (not available in Germany). The advantages of this new design were fuel savings, lower maintenance requirements, lower soot development and the now possible waiver of starting aid at temperatures above −15 ° C.
Whereabouts
The Deutsche Bundespost owned a total of 140 copies of the Mercedes O 322. 29 buses of this model went to the SSB to replace a section of the former tram line 3. Three O 322s were used in Münster until the 1970s, thirteen in Solingen, eleven on the Cologne-Bonn railway, ten in Wilhelmshaven, eight in Bamberg, nine in Passau , thirteen on the Geilenkirchener Kreisbahn (3 of them ex Düren), six at Kraftverkehr Erkelenz, three in Mönchengladbach. Twelve O 322s were sold to Freiburg im Breisgau ; but since they were too small for the high number of passengers in this city, six of these vehicles were returned to the manufacturer after a short time. Overall, the O 322 more or less disappeared from the cityscape in the 1970s. Some O322 also operated abroad, e.g. B. six copies at MIVG Gent (Belgium).
Preserved copies
In the German-speaking area there are currently (as of July 2009) five known copies; two of them are still operational. One of these two copies is now operated by the Stuttgart Historic Trams Association. It was used regularly by the SSB until 1979, most recently as a driving school car, and then passed on to the predecessor of the current operator. It first came to Schönau in the Odenwald and did not return to Stuttgart until 1995 . After several years of extensive restoration, the bus has been usable again since 2001.
Technical specifications
Parameters | O 322 (May 1961) | O 322 (November 1961) |
---|---|---|
Dimensions and weights (mm / kg) | ||
wheelbase | 5110 | |
Front track | 1905 | |
Rear track | 1725 | 1745 |
Ground clearance | 250 | |
length | 9955 | |
width | 2500 | |
height | 2900 | |
Front overhang | 1950 | |
Rear overhang | 2895 | |
Turning circle diameter | 18.4 | |
Empty weight | Depending on the structure | |
Maximum permissible total mass | 12,000 | |
engine | ||
Engine designation | OM 321 | OM 322 |
Engine type | Straight-six four-stroke - antechamber -Saug dieselmotor | |
Valve control | OHV valve control | |
Cooling system | Water cooling | |
Firing order | 1-5-3-6-2-4 | |
Dimensions | 385 kg | 410 kg |
Compression ratio | 20.8: 1 | 22.7: 1 |
Medium work pressure | 7.4 bar | 7.9 bar |
Injection pressure | 132 bar | |
Bore × stroke | 95 mm × 120 mm | 97 mm × 128 mm |
Displacement | 5,103 cm 3 | 5,675 cm 3 |
Nominal power according to DIN 70020 | 110 DIN-PS / 81 kW (120 hp SAE gross) at 3000 min -1 | 126 DIN-PS / 93 kW (138 hp SAE gross) at 2800 min -1 |
Maximum torque according to DIN 70020 | 30.5 kg · m / 299 N · m at 1600 min -1 | 36 kgf · m / 353 N · m at 1600 min -1 |
Further data | ||
Fuel consumption according to DIN 70030 | no information | |
Clutch (with manual transmission) | Fichtel & Sachs | |
Gear type | Daimler-Benz G 32 | |
Gear ratios | 1st gear: 4.24 2nd gear: 2.736 3rd gear: 1.663 4th gear: 1.00 R-gear: 8.29 |
1st gear: 8.98 2nd gear: 4.24 3rd gear: 2.736 4th gear: 1.663 5th gear: 1.00 reverse gear: 8.29 |
Top speed | 71 km / h | 75.6 km / h |
Gear ratio gear / rear wheels | 7.857: 1 | 6.857: 1 |
See also
literature
- Association of the Automotive Industry : Daimler-Benz AG. Mannheim plant: Type O 322 . Number 1200. Frankfurt am Main. November 1961
- Association of the Automotive Industry : Daimler-Benz AG. Mannheim plant: Type O 322 . Number 1200. Frankfurt am Main. May 1961
- Association of the Automotive Industry : Daimler-Benz AG. Mannheim plant: Type O 322 . Number 1200. Frankfurt am Main. November 1959
Individual evidence
- ↑ http://media.daimler.com/marsMediaSite/de/instance/ko/Betont-kompakt-und-wendig-der-lupenreine-Stadtbus-O-322.xhtml?oid=9272061 , accessed on July 6, 2009
- ↑ Archived copy ( memento of October 26, 2014 in the Internet Archive ), accessed on Sept. 27, 2014
- ↑ Archived copy ( Memento of the original from May 25, 2012 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. , accessed July 6, 2009
- ↑ Archived copy ( memento of July 14, 2004 in the Internet Archive ), accessed on July 6, 2009, slight data deviations from other sources
- ↑ http://www.omnibusverein.de/ms-bus/stwmhist.htm , accessed on July 6, 2009
- ↑ http://regiowiki.pnp.de/index.php/Verkehrsbetriebsgesellschaft_Passau , accessed on July 6, 2009
- ↑ Archived copy ( memento of July 5, 2009 in the Internet Archive ), accessed on July 6, 2009
Web links
- quick interview
- Hydrostatic fan drive
- Eminently compact and manoeuvrable: the flawless O 322 city bus.Global Media Site of Daimler AG, accessed on September 21, 2017 .
Vehicle class | 1920s | 1930s | 1940s | ||||||||||||||||
6th | 7th | 8th | 9 | 0 | 1 | 2 | 3 | 4th | 5 | 6th | 7th | 8th | 9 | 0 | 1 | 2 | 3 | 4th | |
Compact class | W 15 (type 170) | ||||||||||||||||||
W 23 (type 130) | |||||||||||||||||||
W 30 (type 150) | |||||||||||||||||||
W 28 (type 170 H) | |||||||||||||||||||
Middle class | W 02 (type Stuttgart 200) | W 136 / W 149 (types 170 V / 200 V) | |||||||||||||||||
W 11 (type Stuttgart 260) | W 143 (type 230 n) | ||||||||||||||||||
W 21 (type 200/230) | W 153 (type 230) | ||||||||||||||||||
W 138 (type 260 D) | |||||||||||||||||||
upper middle class | W 03 / W 04 / W 05 (types 300/320/350) | W 18 (type 290) | |||||||||||||||||
W 10 / W 19 (types 350/370/380) | W 142 (type 320) | ||||||||||||||||||
W 22 | |||||||||||||||||||
Upper class | Type 400 & Type 630 | W 24 / W 29 / W 129 (types 500 K / 540 K / 580 K) | |||||||||||||||||
W 08 (type Nürburg 460/460 K / 500 / type 500 N) | |||||||||||||||||||
W 07 / W 150 (types 770/770 K) | |||||||||||||||||||
Sports car | Model K | ||||||||||||||||||
W 06 (type S / SS / SSK / SSKL) | W 24 / W 29 / W 129 | ||||||||||||||||||
Off-road vehicle | W 103 (type G1) | W 31 (type G4) | |||||||||||||||||
W 133 III (type 170 VG) / W 139 (type 170 VL) / W 152 (type G5) | |||||||||||||||||||
Vans | L 3/4 | L 1000 Express | L 301 | ||||||||||||||||
L 300 |