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The Voith DIWA automotive engine was designed by Voith primarily for city-buses and suburban buses. The motor utilizes a Differential-Wandler (Converter) or DIWA which replaces two gears which would be used on a conventional transmission. Voith has designed many variations and generations of the Voith DIWA engine.
DIWA (D851/D854/D854G) 1976-1990
DIWA 2 (D851.2/D854.2/D854.2G/D863/D864) 1985-1999
DIWA 3 (D823.3/D851.3/D854.3/D863.3/D864.3/D883.3/D884.3) 1995-2005
DIWA.3E (D823.3E/D851.3E/D854.3E/D863.3E/D864.3E/D883.3E/D884.3E/D381.4)
DIWA.5 (D824.5/D854.5/D864.5/D884.5)
(e.g. the D863 rotates at 2500rpm while D864 rotates at 1700rpm when the bus is at 70km/h)
DIWA.6 (D824.6/D854.6/D864.6/D884.6)
DIWA.NXT (D827.7/D827.8/D857.8/D867.8/D887.8/D897.7/D897.8)
D200, D506 (wide-ratio)
| 1 | 2 | R |
|---|---|---|
| 1.97 | 0.95 | 3.80 |
D501, D506 (close-ratio)
| 1 | 2 | R |
|---|---|---|
| 1.39 | 0.85 | 3.80 |
D854 (D851 is 3 forward+reverse with the same ratios), DIWA.4
| 1 | 2 | 3 | 4 | R |
|---|---|---|---|---|
| 5.200 | 1.360 | 1.000 | 0.735 | 3.800 |
DIWA.5, DIWA.6
| 1 | 2 | 3 | 4 | R |
|---|---|---|---|---|
| 5.200 | 1.429 | 1.000 | 0.700 | 4.120 |
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"Voith 506 Document" (PDF). Voith . Voith. Retrieved 24 October 2013.
"DIWA.3E, E 200, DIWAGNOSIS - The Combination for Economic Operation". Voith . Voith. Retrieved 24 October 2013.
