Solaris Introduces New Mild Hybrid Bus

The Urbino mild hybrid uses a hybrid system which captures and stores power as the bus brakes for use when necessary.

Solaris Bus & Coach
2 Solaris Urbino 12 Mild Hybrid 1
Solaris Bus & Coach

Solaris Bus & Coach introduces the Solaris Urbino mild hybrid to its offering of low-emission buses. Development of the new mild hybrid is in response to needs of operators and carriers offering services of public transport for innovative urban transport vehicles which minimize the impact of such transport on the natural environment, while at the same time allowing to generate considerable savings and to reduce fuel consumption.

Use of the mild hybrid solution—which captures and reuses energy during braking events—enables the bus to go beyond the EURO 6 emissions standards for diesel engines. 

“In our new vehicles we will provide a mild hybrid system of the latest generation. It is predicted that the number of this type of solutions on the market will increase systematically. Once again, Solaris reacts to changes it observes. It is with satisfaction that we announce the inclusion of this novel, low-emission solution into our vehicle portfolio,” states Petros Spinaris, Deputy CEO of Solaris. 4 Solaris Urbino 12 Mild Hybrid 1Solaris Bus & Coach

Implemented in the latest item in the bus portfolio of Solaris, the system is based on three crucial elements: an electric machine, an energy storage system and a driver for the structure monitoring the operation of the system. When braking, the electric machine of the bus works as a generator and it recharges the energy storage with the maximum available power. The capacity of the energy storage tank has been chosen so as to facilitate the recuperation of energy when braking from the speed of ca. 60 kph downwards. When the storage unit is partially or fully recharged, during the acceleration process, the electric machine acts as an electric engine supporting the operation of the diesel engine. 

In other words, when the bus brakes, the mild hybrid system generates and stores power, whereas when the bus accelerates, the system will assist the diesel engine. Owing to this arrangement, the manufacturer has achieved a reduction of fuel consumption. In contrast to regular hybrid buses, mild hybrids are characterized by a lower power of the electric drive unit, whose chief task it is to relieve strain on the diesel engine. 

The launch of the mild hybrid model will therefore enrich the existing portfolio of Solaris regarding low-emission vehicles: the Urbino hybrid and the Urbino CNG. These are low-emission vehicles that stand out on account of their great operability, and at the same time their economical operations. The Solaris Urbino mild hybrid will fill up the existing portfolio of the manufacturer. 

“The Solaris Urbino mild hybrid is a novelty in our offer, though it is one based on the perfected solution of the latest generation. We will certainly continue developing this part of our portfolio, so as to offer our clients a choice between completely zero-emission or low-emission vehicles, depending on the needs and options related to the bus infrastructure,” stressed Michał Pikuła, Bus Development Director, Solaris Bus & Coach. 

3 Solaris Urbino 12 Mild Hybrid 1Solaris Bus & Coach