QUANTRON takes off emission-free with the CIZARIS electric bus

Source: press release, 16 February 2022

CIZARIS – QUANTRON’s first all-electric bus
CIZARIS – QUANTRON’s first all-electric bus (photo: QUANTRON)

QUANTRON’s new 12-metre-long electric bus will stimulate the market for zero-emission and at the same time affordable buses and will be called CIZARIS. The new bus model in the Augsburg-based company’s bus portfolio will launch as an all-electric version (CIZARIS 12 EV), followed in 2023 by a fuel cell drive (CIZARIS 12 H) using a largely identical powertrain. QUANTRON enjoys a special position here as a “Preferred Partner” thanks to its entrepreneurial connection with the Asian manufacturer EV Dynamics. The name of the new offering for sustainable and reliable mobility in cities says it all: the basic “CI” stands for “City” – i.e. the area of application – the central and prominent “Z” stands for “Zero (emissions)” and the suffix “ARIS” is derived from the Greek and stands for “the noblest/the best”.

The electric bus is the first QUANTRON model to carry the evolutionary QUANTRON lettering and the new logo. It stands for the combination of the three brand values “Reliable – Energetic – Brave”. These values are also embodied in the striking three-part intermittent “running light indicators” in the front, which are similarly installed in other QUANTRON models.

The CIZARIS city bus illustrates QUANTRON’s brand values at first glance with its purposefully placed colour components in “Absolute Zero Blue”. The front of the vehicle is visually appealing thanks to its windscreen, which is pulled far down and has large radii on the outside, leaving space below for the new logo. Thanks to its design as a purely electric bus, the vehicle does not have a conventional “power unit tower” in the rear and thus offers an impressive 24 to 35 seats – in total, depending on the battery package, there is room for 81 to 95 passengers – significantly more than many competitors.

Access through two or three 1,200 mm wide doors makes it clear to passengers that they are dealing with a true space artist. Wide passages between the axles or to the optional third door at the rear contribute to the airy and pleasant impression of space, as does the enormous headroom of 2,449 mm. The front area up to door two is fully low-floor and very easy to clean thanks to beautifully shaped keel seats. For the first time in this segment, the robust seat covers are manufactured using textile digital printing and feature the QUANTRON logo in the specially created parametric design pattern. A highly efficient Valeo heat pump/air conditioning unit with a cooling capacity of 33 kW provides the right climate on board. Of course, antiviral filters as well as a closed driver’s cab are among the possible equipment options adapted to the respective countries. A special highlight in the interior is the elaborately perforated aluminum ceiling with indirect lateral light as well as further LED lights mounted transversely to it, the color of which can be changed on request.

The driver’s workplace of the CIZARIS is mounted on a raised platform from which the driver meets his customers at “eye level”. The CIZARIS is one of the few city buses to also offer a separate front observation camera with a large monitor above the cockpit. The electric bus is equipped with the latest electronic safety systems such as ABS/ASR, EBS 5.0, ECAS from European production, and the turn-off assistant from Mobileye can also be retrofitted on request. And optimum fire protection is ensured in the rear compartment, in the battery modules and other high-voltage components by means of fire detectors (temperature/gas sensors) and separate powder extinguishing cartridges – even though the LFP batteries are considered by all experts to be largely “incombustible”.

QUANTRON relies on the combination of robust and reliable lithium iron phosphate batteries and highly efficient synchronous central motor from Dana/TM4, which has been used in tens of thousands of buses for years. From QUANTRON’s point of view, this combination, which has so far been rather rare in Europe, represents the optimum two-man team for converting the energy on board into propulsion as safely and efficiently as possible. With between 242 and 424 kilowatt hours of selectable battery capacity, CATL’s roof-mounted-only battery packs are fast-charged with 65 to 150 kW of direct current (DC) in two to five hours. In the medium-heavy eSORT 2 cycle, this energy is sufficient for 220 to 370 kilometre circulations at a do-duty (DoD) charge rate of 10%.

The vehicle-mounted and water-cooled Dana/TM4 central motor based on the permanent synchronous principle (PSM) is appealing due to its low speeds and particularly high efficiency compared with asynchronous motors. It has an output of 145/245 kilowatts (nominal/maximum) and a maximum engine torque of 1,055/3,329 newton metres, which is developed without any gear changes. With the introduction of the fuel cell version, an even more powerful powertrain will be used.

QUANTRON does everything in its power to help the customer configure the vehicle and analyse its routes and electrical equipment as early as the purchasing process with its experts. The basis for a long bus life is a complex cataphoretic dip painting of the frame (KTL) and other effective corrosion protection measures. The warranty terms are basically 2 years for the entire vehicle, and 8 years or 3,000 charging cycles (or 80% charging capacity – whichever comes first) for the important batteries. In total, QUANTRON has a network of 700 service partners in Europe, many of whom can also service electric buses. In a multi-stage service concept, it is checked in each case whether the customer’s workshop can be upgraded to work largely self-sufficiently with the support of QUANTRON technicians.

For the market launch of the QUANTRON CIZARIS, the sales focus is initially on the markets of Eastern Europe, the Middle East, Scandinavia and Southern Europe. Due to the special requirements of the German market, such as the VDV specifications regarding the driver’s workstation and other systems, the market launch in Germany, Austria and Switzerland will take place in the second half of 2022.