:quality(80):no_upscale())
The right transmission at the right time.
Make way for Driventic: The DIWA NXT is the next generation of our proven DIWA automatic transmission. Optimized efficiency is its standout feature: It boasts a second overdrive, a separate retarder, and an optional central recuperation unit (CRU) with 48 V technology that keeps fuel consumption as low as possible, in both city and regional buses.
Your benefits at a glance
DIWA NXT is the latest generation transmission for city, regional, and coach buses. Its most outstanding feature is optimized efficiency: it comes with a second overdrive, a separate retarder, and an optionally available central recuperation unit (CRU) that uses 48-volt technology to minimize fuel consumption – especially in intercity operation. The entire system is produced according to the latest automotive standards ISO 26262.
:quality(80):no_upscale()){kind=icon}
%
:quality(80):no_upscale()){kind=icon}
%
:quality(80):no_upscale()){kind=icon}
%
:quality(80):no_upscale()){kind=icon}
Suitable for diesel, CNG, HVO, B100 and H2 drives
:quality(80):no_upscale()){kind=icon}
World-premiere: performance of differential converter and retarder can now be independently optimized
:quality(80):no_upscale()){kind=icon}
Recuperates braking energy based on a highly-integrated 48V mild-hybrid system
:quality(80):no_upscale()){kind=icon}
Reduction of air pollution
:quality(80):no_upscale()){kind=icon}
Reduction of noise pollution
:quality(80):no_upscale()){kind=icon}
Maximum comfort for passengers
:quality(80):no_upscale()){kind=icon}
Low maintenance costs
:quality(80):no_upscale()){kind=icon}
Lower installation effort
:quality(80):no_upscale()){kind=icon}
The entire system is manufactured according to the latest automotive standards ISO 26262
DIWA NXT
Automatic transmission for all bus operation
Join forces with us and make the most of the numerous advantages of the groundbreaking DIWA NXT mild hybrid system. Integrated into the flywheel housing of the engine, it works with a special inverter located at the top of the transmission to efficiently avoid line losses. Moreover, the optional 48 V mild hybrid system offers additional practical functions like stop-start, recuperation during braking, or boost support. Another optional feature is a special battery and cooling system, including an optimized DC/DC converter.
DIWA NXT is therefore bridging the gap between diesel drives and alternative technologies – and is Driventic’s logical response to the constantly growing demand for efficient and environmentally friendly drivetrain solutions.
More environmentally friendly urban, regional, and intercity transport
With its recuperation unit, DIWA NXT offers bus manufacturers a simple and comprehensive way to quickly hybridize their vehicles. Operators can use the system to make a sustainable contribution to significantly more environmentally friendly urban, regional, and intercity transport — while also substantially reducing their operating costs thanks to fuel savings of up to 16 percent. Even on long-distance routes and at high speeds.
:quality(80):no_upscale())
:quality(80):no_upscale())
Built-in secondary retarder
Benefits
Retarder functionality almost to a complete standstill
Better retarder control
Faster torque ramp-up
Optimized for cruise control
:quality(80):no_upscale())
Second overdrive (7th Gear)
Benefits
Can now also be used for intercity and long-distance buses thanks to the second overdrive gear
Highest overall gear efficiency on the market
Best TCO thanks to lowest fuel consumption and maintenance costs
Additional comfort for passengers thanks to smoother engine speed adjustment to the driving situation
Lower noise emissions due to reduced average engine speed
Lower carbon and pollutant emissions thanks to optimized engine speed adjustment
:quality(80):no_upscale())
Electrical system
Wiring - Benefits
Wiring harness outside the transmission for easier access and reduced maintenance costs
Heavy-duty cables specially designed and suitable for the conditions in the engine compartment
Sensors easily accessible from the outside of the transmission
Hardwired sensors ensure perfect quality of electrical signals
Sensors – Benefits
Sensors easily accessible from the outside of the transmission
Directly wired sensors to ensure perfect quality of the electrical signals
:quality(80):no_upscale())
Optimized torque converter
Benefits
Optimized torque converter for the start-up phase
Enhanced starting and climbing performance
Fully functional reverse gear mode
Independent of retarder function
:quality(80):no_upscale())
Built-in frequency converter
Benefits
The frequency converter is integrated into the transmission housing. No additional space required for installation
High efficiency due to short cable lengths
Liquid cooled with water-based coolant
IP6K9K
ISO 26262
:quality(80):no_upscale())
Central recuperation unit (CRU)
Benefits
The CRU is integrated into the flywheel housing
The CRU provides 25 kW of continuous power
Peak power from energy recovery stands at 35 kW
Liquid-cooled system
48 V motor with 300 Nm engine starting torque for all types of combustion engines
Integrated system with minimum possible additional axial length
CRU can replace up to two alternators
The CRU system enables active engine stopping/starting
Start-up assistance through active boosting
Reduces load on vehicle’s on-board electrical system thanks to recovered energy
:quality(80):no_upscale())
DIWA NXT Success Story HSB
Greater efficiency for the new bus generation
Hanauer Straßenbahn GmbH (HSB) was one of the first companies to use the new generation of buses equipped with DIWA NXT on its regular routes. Since the end of 2022, a total of 16 new solo and articulated buses have been out and about on the streets of Hanau, the birthplace of the Brothers Grimm.
:quality(80):no_upscale())
Lower pollutant emissions, lower fuel consumption
HSB’s 13 lines serve a total of 176 stops in a dense network with a length of 111 kilometers covering an area with a largely flat topography. This also means that the vehicles have to repeatedly brake, stop, and move off at short intervals. Average speeds are accordingly low. The reliable stop-start function of DIWA NXT significantly lowers the air pollutant emissions. This also has a positive effect on HSB’s bottom line: the optimized interplay between the motor and the transmission noticeably reduces the fuel consumption.
Thanks to our many years of good experience with Driventic, we were confident that we were opting for a sophisticated development with the new transmissions. The insights from practical operation during the last few months show that we made the right decision.
Corinna Maria Schulte, Managing Director of HSB
:quality(80):no_upscale())
DIWA NXT Success Story OK.go
Demo bus making the rounds in regular service
Demand for new drive concepts such as DIWA NXT is rising steadily. This is because in order to make further progress in reducing CO2 emissions, bus operators such as OK.go will have to make sweeping changes to their fleets that go beyond the pure internal combustion engine in the coming years.
:quality(80):no_upscale())
Multiple-week test phase on the way to greater sustainability
As far as emissions are concerned, the existing engine concepts have largely reached their limits. At the regional bus company OK.go, which, with its vehicles, makes a sizable contribution to public transport in the Ostalbkreis district just outside Stuttgart, the decision-making process for the changeover has also long since begun. The multiple-week test phase for our demo bus, a combination of an Iveco Crossway and DIWA NXT, is an important step in this journey toward greater sustainability.
It also makes economic sense to store the energy generated during braking and deceleration. This energy can then be used for electric starting and for supply of the on-board electrical system. Through this, fuel consumption can be efficiently reduced.
Dominik Jakob, Managing Director of OK.go
:quality(80):no_upscale())
Aladin Beyond
Cloud-based fleet management
This is what modern fleet management looks like today: With Aladin Beyond, Driventic has developed a new cloud-based solution for intuitive, data-driven monitoring and maintenance of its VEDS and DIWA automatic transmissions. Everything from a single source, everything in one report.
Aladin
DIWA, VEDS and MRCU diagnostic software
Our proven Aladin software diagnostic desktop tool enables detailed analyses for our DIWA automatic transmissions and Electric Drive System VEDS.
To download Aladin, please fill in the form.
Oil lists for DIWA automatic transmission
Lubricants for DIWA automatic transmissions
Contact us!
Do you have questions about our DIWA NXT automatic transmission?
We are happy to help you!
This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
Our Service Portfolio
Service for Commercial Vehicles:
Worldwide, Right on Site
:quality(80):no_upscale() "Warehouse digital inspection")
:quality(80):no_upscale() "Tech team collaboration")
Whether maintenance, repair, system updates, or spare parts supply – Driventic offers tailor-made service concepts for commercial vehicles. By using tested original parts, you benefit from maximum safety, longer service life, and greater value retention. Our digitalization solutions make operating commercial vehicles even more efficient and sustainable. How does it work? You can learn all about it from our globally active experts – gladly in person, directly in your workshops.
Products for buses
Additional products for the mobility of the future
:quality(80):no_upscale())
VEDS
The future of mobility is electric — and Driventic is actively shaping it. With the VEDS, we offer customized, highly efficient drive solutions for trucks and buses that reduce CO₂ emissions and protect the environment.
:quality(80):no_upscale())
DIWA NXT Automatic Transmission
The outstanding feature of DIWA NXT is its optimized efficiency: it has a second overdrive, a separate retarder, and optionally a central recuperation unit (CRU). Using 48V technology, it keeps your fuel consumption as low as possible.
:quality(80):no_upscale())
DIWA Automatic Transmission
Starting, shifting, braking, shifting again — bus transmissions face special demands in regular service operations. As a bus manufacturer or fleet operator, you can rely on Driventic’s globally successful DIWA automatic transmissions.
:quality(80):no_upscale())
Air Compressors
Driventic’s air compressors feature two-stage compression with intercooling. Compared to single-stage compressors, this design enables significantly higher performance during delivery operation while substantially reducing energy consumption.
:quality(80):no_upscale())
Hydrodamp vibration damper
Whether tractors, construction machines, buses, or trucks — the Hydrodamp vibration damper series efficiently protects the drivetrain from overloads and sustainably extends the service life of individual components by reducing vibrations.