Volvo 7900 Diesel Electric Bus Now In Service


Volvo 7900 Plug-In Hybrid Bus

Volvo 7900 Plug-In Hybrid Bus

Volvo Buses delivered to the Hamburger Hochbahn AG the first three 7900 Plug-In Hybrid buses with the new roof charging system, ordered earlier this year.

All three now run in commercial service for the very first time on the aptly named Innovation Route 109 in Hamburg.

Different solutions are being tested in Hamburg as the city would like to switch to zero-emission-only buses by 2020.

“The new Volvo 7900 Electric Hybrid commenced scheduled operation in Hamburg on December 18. The starting shot for the innovative bus system coincided with the opening of the Innovation Route 109. The route will be used by the public transport company in Hamburg, the Hamburger Hochbahn AG (HOCHBAHN), to run comparative tests of innovative drive technologies under the strict everyday conditions of scheduled services. The city of Hamburg has established the target: from 2020, only emission-free buses should be acquired by the city.

Buses have 7 km of all-electric range, while the route is 10 km long. Two fast charging stations at the bus stops seem to be enough to do the job. Charging takes just six minutes.

Olof Persson, President and CEO of the Volvo Group stated:

“We are delighted that our new electric hybrid bus will serve the Innovation Route 109.  For us, the electric hybrid bus represent the current peak of our successful cooperation with Hamburger Hochbahn AG. Together, we have reached our shared goal, making public transport more efficient, quieter and more sustainable. We will continue our cooperation here in Hamburg with sustainable, low-noise vehicles.”

About the Volvo 7900 Electric Hybrid:

“With its world-first electric hybrid bus incorporating Euro 6 equipment, electric motor and plug-in technology, Volvo is further developing its electro mobile pioneering role. Charging takes place at the end stop using a pantograph that is integrated with the charging station. When the bus has reached its parking position under the charging mast, the pantograph is lowered to both of the charging bars on the roof of the bus when the driver presses a button. The complete charging process takes only six minutes.

The lithium ion iron phosphate charger provides the electric motor (150 kW) with power. The bus travels at least seven kilometers purely on electricity, before the Euro 6 diesel aggregate switches on. On the stretches driven only on electricity, the bus is completely emission-free and extremely low-noise: Near to a Volvo 7900 Electric Hybrid, the noise level can be compared to normal conversation level.

The Volvo 7900 Electric Hybrid also offers a high level of flexibility of use: In selected areas, it can be driven on electricity alone, while it can be deployed as a hybrid bus on all scheduled routes. The technology used in the electric hybrid bus is that of the successful Volvo 7900 diesel hybrid bus, which ensures a high level of availability.

Volvo Bus Corporation is taking another step forward in the direction of electrification with its Volvo 7900 Electric Hybrid. There is a major interest in the new Electric Hybrid buses from numerous cities, both in Europe and in other parts of the world. Serial production is scheduled to commence early 2016.”

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7 Comments on "Volvo 7900 Diesel Electric Bus Now In Service"

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Good news, but why only 7km AER? I mean, it’s not like a city bus lacks space to tuck a battery-pack under. See under BYD.

Exactly. No complicated hybrid power train, no expensive high speed overhead charging hardware, just enough batteries to do the days run.

I hope Hamburg say’s “Sorry, 75% electric isn’t enough. We want 100% electric”.

That would be a good kick in the ass for Volvo.

75% is good but not enough for a company from one of the greenest industrialised countries of the world.

that is a valid point, but there is a problem with reasoning. The ICE is not there that it would be used for normal driving, but it is just there that the buss will retain its functionality in the case of malfunction or orther unusual circumstances. Of course it would be cheaper to ditch the diesel engine and instead have buss that has 10 km range. But of course 10 km range electric bus is not that functional, but it would still require a range extender.

What I meant is that they could easily have had a 20 or 30 km range so that it would have been 99% electric and 100% electric on all normal days.

Look at it another way. This bus is a huge improvement over its predecessor, the Volvo Hybrid. The Hybrid was 100% diesel powered. The Hybrid Electric is only about 20% diesel powered, the rest grid electricity. That is an enormous improvement! The Electric Hybrid is essentially the same vehicle as the normal hybrid, but with a larger battery and an overhead charging system. This means it is thoroughly tested and reliable. I’m not sure any full electric can say the same.
Plus the Electric Hybrid can cruise at highway speeds on the efficient diesel, climb any mountain, ford any stream…
A well rounded performer with very low technical risk for the bus operator, while achieving very respectable all-electric performance most of the time, and the security of the diesel backup.

I live in Hamburg. No mountains here, speed limit 30 mph.

Diesel ist useless here. The question is: Why does the city of Hamburg does NOT test BYD Busses ?

Coulld it be politics ? Could it be that the chargers are from Siemens, otherwise not needed. And who funds the chargers ? EU-Money ? THATS the real question.