Case study

Remote maintenance transformation at Bosch with Ewon technology

In Lollar, Germany, Bosch KWK Systems utilizes Ewon remote gateways for efficient maintenance of their advanced heat and power units. These units, maximizing energy from natural gas sources, require remote software updates and maintenance, especially in remote locations without broadband.


As natural resources are getting scarcer, it is increasingly important to get the most out of the energy sources we have. Using combined heat and power units is a smart way to optimize the use of energy and get both heat and power from the same generator. In Lollar, Germany, Bosch KWK Systems develops state-of-the-art heat and power units enabling their customer to become more energy-efficient. But as all advanced machinery, Bosch’s heat and power units need maintenance every once in a while. With Ewon remote gateways, Bosch found a way to do this remotely.

Making the most of gas

Bosch’s combined heat and power units obtain what is possible from natural gas, sewer gas, or biogas. And the output is impressive. BOSCH KWK’s systems range between 12 kW to more than 2 Megawatts of electricity and produces enough heat to supply an entire district.

One of Bosch’s trademarks is compact construction. In the tradition of German engineering, every centimetre counts. This enables the plants to be easily accommodated in buildings and it also facilitates transport. This is apparently a good concept, as demand is rapidly increasing.

But as more systems are being deployed, Bosch also needs to face an increasing need for maintenance. “The more systems that are running, the higher the expense in service and maintenance, so we wanted to find a way to do this remotely” says Yassin Ouchen of Bosch KWK. “Our main objective was to find a way to do software updates remotely at any time. However, many of our units are located out in the sticks, where there is normally no broadband connection.”

Therefore, Bosch looked for solution which could communicate via the cellular network.


It means substantial efficiency gains for us and our customers.

Yassin Ouchen, Bosch KWK


Bosch compared a wide variety of remote management systems and finally chose Ewon. There were many features that suited Bosch well, for example the many integrated interfaces such as HSDPA, Serial, MPI and Ethernet. 

By using Ewon gateways, Bosch can provide their customers with quick remedies to any questions or errors. If a customer calls, a skilled engineer can immediately log in to the relevant system and see what can be done.

Preventive maintenance is also possible, as Bosch can get notifications whenever operation hours or other parameters reach certain levels, or when machines exceed their service time. Statistics and analytics is made possible as control system logs, Modbus logs etc. are read into the Ewon gateways. 

Simplifies commissioning

Also during the commissioning phase, the possibilities for remote maintenance are invaluable: “When we set up our systems, it may be necessary to go back and do small adjustments – since this can now be done from our centre with a few mouse clicks, it means substantial efficiency gains for us and our customers” explains Mr Ouchen.

A centralized monitoring system

Bosch KWK has developed its own remote maintenance portal under the guidance of Yassin Ouchen. All data is directed to an internal server, which can be accessed anywhere using a web browser. After logging in, service technicians see the systems in their area. By using a filter, you can set up which systems that should be shown – for example those with any irregularities or where an alarm has been triggered. In urgent cases, messages can be sent from the server via email or SMS, so no time is lost.
A dashboard gathers all the system data in a single view. There is also a log with all processes and historical data, allowing an easy overview at a glance.

More than remote maintenance

“We also use the Ewon gateways to synchronize the times of all systems,” adds Yassin Ouchen. “So the service provides the time which is then transferred to all the systems via the gateway.”
But it is not just the technical possibilities of the Ewon gateway that convinced Bosch KWK. The slim design also corresponds to Bosch’s philosophy of saving as much space as possible.

Bosch’s combined heat and power units are delivered to customers all over the world and Ewon remote maintenance gateways, distributed by our German distributor - Wachendorff.

Company: Bosch

Country: Germany

Year: 2019

Solution: Industrial remote access

Industries: Heat and power units 

Products: Ewon Cosy

You might also be interested in

White papers

Stay up to date on the latest topics and gain industry insights from HMS' experts through our white papers, providing valuable knowledge and analysis.

All case studies

Our products solve everyday industrial communication problems. Discover how our customers have improved their business with HMS case studies.

All solutions and applications

HMS communication solutions help thousands of companies solve specific communication problems in many different industries and applications.

Technologies we work with

5G, IIoT, Industrial Ethernet, Safety, AI, e-mobility, battery communication – HMS leads the way.