Higher of
standards
urban life
Solaris Urbino hybrid buses offer an innovative approach to environmental care. These vehicles, powered by a drive which is a combination of a combustion engine and an electric engine, are designed for the most demanding city bus operations. With their emission-reducing solutions, Solaris Urbino Hybrid buses significantly increase the standard of living in the city.
Urbino 12 Hybrid
intelligent power combination
The Solaris Urbino 12 Hybrid was designed in collaboration with Eaton, a well-experienced American company that has been operating in the American market for many years. This vehicle is environmentally friendly and ready to meet the requirements of city residents. The combination of electric drive and combustion engine creates an intelligent solution that reduces fuel consumption by as much as 30%. This reduction is achieved by minimizing the operation of the combustion engine and using the electric
engine as much as possible. Lower fuel consumption and a combustion engine that meets the most demanding emission standards make Urbino 12 Hybrid friendly to the environment and to city residents. the advanced power transmission system of Urbino 12 is automatically controlled, enabling the driver to focus on driving, whereas the main computer decides when to use the power generated by the combustion engine and when by the electric engine. The bus is also equipped with an automatic start/stop
system, which automatically switches the engine off when the vehicle opens its doors at the bus stop. The engine restarts after closing the doors. Most importantly, the driver does not have to perform any additional activities to control this function.
Designed
to meet
expectations The parallel hybrid system used in the Urbino 12 Hybrid was designed especially for 12-metre city buses. One of the main advantages of the power transmission system is that it recovers kinetic energy from the braking process, which is stored as electrical energy in lithium-ion batteries located under seats near the central doors of the bus. When accelerating, energy stored in these batteries is supplied to the electric engine, which has a peak power output of 44 kW. The recuperation process is used to charge the batteries - they do not require additional power supply from external sources. The combustion part of the power transmission system uses a Cummins diesel engine of 6.7 l capacity and 162 kW power (220 PS). The engine meets the requirements of the strict EEV emissions standard. The final item improving the operation of the drive system is an automatic six-speed transmission manufactured by Eaton. The power is transmitted to the rear axle of the vehicle. The arrangement of the hybrid system does not affect the number of passenger seats.
Urbino 18 Hybrid environment
and economy
The first Solaris Urbino 18 Hybrid bus was manufactured in cooperation with American company Allison Transmission. The combination of two electric engines with a Cummins diesel engine created a perfect solution that anticipated global trends in this segment. Environmental care and minimal fuel consumption were the main objectives pursued by engineers in designing this hybrid bus. The significant reduction in emissions achieved in this Solaris
hybrid bus makes it friendly to the environment and city residents. The Urbino 18 Hybrid also provides tangible benefits and savings to its owner. Fuel consumption reduced by up to 22-24% generates significantly lower operational costs. In choosing the Urbino 18 Hybrid, transport companies choose the experience, knowledge and expertise of the manufacturer who was the first to introduce hybrid buses to European markets
in volume production. The Allison hybrid system is a solution combining the power of combustion engine and electric drive. The advanced diesel engine control ensures its operation within its optimum revolution range, with the power surplus is used to charge the batteries while driving. Energy generated by braking process is recovered and stored in batteries, ready to be reused for acceleration.
Full of energy and technically
advanced
The combustion part of the power transmission system uses a Cummins diesel engine of 6.7 l capacity, the ISB6.7 250H. This power unit is matched to the hybrid system and meets the requirements of the EEV emissions standard. The second and main part of the power transmission system is the EP50 system provided by Allison Transmission. With the hybrid drive located in the rear of the bus, in the engine tower on the left side, space for installing up to 51 seats is provided. The total number of passengers that may travel on the Urbino 18 Hybrid bus reaches as many as 161 people. Batteries and a traction inverter, located on the roof, complement its hybrid drive system. Weight is distributed to ensure optimal axle load.
The EV drive is the central component of the hybrid system, which is responsible for blending the torques of combustion and electric engines. It consists of two electric engines, two synchronous clutches and three planetary gears. The EV module looks like a traditional gear box. The final element of the system is the control unit. It includes two Allison series 1000/2000 modules. The role of the first module is to control and manage the operation of the hybrid system, whereas the second one is responsible for cooperation with other vehicle systems. Properly processed energy, recovered during the braking process, is stored in batteries mounted on the roof of the bus. Therefore these batteries do not require additional power supply from
external sources to be recharged. The operational lifetime of the set of these nickel-metal-hydride batteries weighing 410 kg reaches approximately 6-7 years, depending on the operational conditions of the bus. The Dual Power Inverter Module (DPIM), weighing 75 kg, consists of two converter modules of AC/DC and DC/AC.
Urbino 18 Hybrid Vossloh Kiepe
The Urbino 18 Hybrid with serial hybrid system of Vossloh Kiepe was manufactured in cooperation with this wellknown and respected German manufacturer of traction equipment for buses and rail vehicles. During the design process, both companies used their experience gained on previous hybrid solutions. The Solaris Urbino 18 Hybrid uses the potential of modern and clean technologies. The new system is arranged in series and combines a well-tested Cummins diesel engine and an electric traction engine, enabling the bus to operate on the electric drive alone. A major challenge in designing this new hybrid bus was to eliminate the need to use the combustion engine
for powering items such as the air compressor, radiator fans, power steering pump or the air conditioning for the batteries. The vehicle has an additional option of electrically powered air conditioning in the passenger’s compartment and in the driver’s cab. Thanks to an innovative solution provided by Bode, electric mini-motors were installed in the shafts of the doors rather than above the doors as usual. The whole mechanism weighs less, takes up less space and is simpler in construction and maintenance. A distinguishing feature of this hybrid bus are additional external roof panels. The interior of the bus is similar to the standard Urbino 18 bus. An interesting solution was
applied to the information system of the bus - two screens display a visualisation of the hybrid drive operation. A router installed inside the vehicle is also an innovative solution; it ensures communication of the bus with the service of Vossloh Kiepe, providing the remote access to the hybrid system data.
Hybrid of new
possibilities
The vehicle is equipped with lithium-phosphate batteries, supercapacitors and a „plug-in” external charging connector. The 384 V battery is located on the roof and is cooled with an air-conditioning system. The roof also provides the location for supercapacitors. The voltage of each supercapacitor is 125 V. Both solutions are used for energy storage. The batteries have to be charged longer, but are able to store more energy. The supercapacitors, in turn, absorb a large dose of energy in a very short time, which can be quickly used, for example during rapid acceleration of the bus. Both the batteries and the supercapacitors may store the energy generated by the combustion engine and by the recuperation process. These are the power sources for the 240 kW traction engine. The system may operate
in hybrid mode, without any external power supply. The bus also has an external battery charging system. The „plug-in” connector provided by Walther, with the allowable charging current of 63 A, supplies energy to the batteries, for example, at the end of the line or in the depot. Therefore, transport companies independently decide on the mode of supplying the electricity to the vehicle - it may be provided from external sources or from the diesel generator mounted inside the bus. The hybrid system interacts with the combustion engine, which was well-tested in previous Urbino Hybrid models. The Cummins ISB 6.7 285H is smaller than standard engines mounted in articulated buses, but combined with the energy storage system it provides a dynamic and
smooth ride. The Solaris hybrid bus may also be driven on shorter distances using only the electric engine. In addition, the drive system can be correlated with a GPS device, which may be used to precisely define the locations where the bus should operate in zero-emission electric mode. The driver does not have to perform any additional activities - the system automatically deactivates the combustion engine, and then restarts it after covering the specified distance.
Urbino 18 Hybrid Diwahybrid The Solaris Urbino 18 DIWAhybrid is an articulated city bus equipped with a parallel hybrid system manufactured by Voith. Its drive unit consists of an internal combustion engine and an electric engine powered from supercapacitors. This solution results in reduced fuel consumption, making the vehicle more environmentally friendly. The Urbino 18 DIWAhybrid combines the reliability of Solaris city buses with the latest drive technologies provided by Voith.
Urbino 18 Hybrid for many
passengers
Voith, known for producing automatic transmissions for buses, started the cooperation with Solaris to design a parallel hybrid system called DIWAhybrid. This system consists of an electrical part, developed by Voith Turbo, and a combustion engine, which supports the combustion drive in the moments of highest power demand. Kinetic energy generated during the braking process is converted into electricity, which is stored in supercapacitors. Urbino 18 DIWAhybrid has supercapacitors composed of five 125 V modules that are able to store energy of 0.5 kWh.
Their total weight is only 410 kg. The supercapacitors are mounted on the roof, and their special casings make the vehicle almost indistinguishable from traditional buses. The electric unit (150 kW) mounted in the DIWAhybrid effectively supports the diesel engine and this support enabled designers to equip the bus with a smaller engine, which of course continues to meet the strict requirements of the EEV emissions standard, the Cummins ISB with 6.7 l capacity and 250 PS. Compared with conventional power transmission systems, the entire hybrid system is heavier
by about 600 kg, but this does not affect the passenger capacity of the bus. The Urbino 18 DIWAhybrid may take on board up to 161 passengers, offering 51 seats.
Urbino 12 Hybrid
powered by Škoda
Solaris, taking care of its customers, offers vehicles adapted to diverse needs of transport companies. One of the hybrid buses offered was designed and manufactured in cooperation with Škoda, a long-standing technological partner of Solaris. The experience gained through many years of cooperation in constructing electric drives for trolleybuses resulted in a new bus from the Solaris hybrid family. The heart of the bus is a Škoda electric power unit of 130 kW. A serial hybrid system installed in the vehicle enables the bus to operate on short distances using only the electric mode. Energy generated from the recuperation process is stored in batteries and supercapacitors. A ‚plug-in’ connector is designed for quick and easy charging of the batteries from an external source. Similarly to other Solaris hybrid models, the bus is equipped with Cummins engine of 184 kW, meeting the most stringent emissions standards.
standard ●
option ○
Urbino 18 Hybrid - Allison Transmission
Urbino 18 Hybrid - Vossloh Kiepe
Urbino 18 Hybrid - VoithDIWA
Engine Cummins ISB6.7 250H (180,5 kW)
●
● ●
Cummins ISB6.7 285H (209 kW) Hybrid system type
parallel
Driveline
drive unit - Allison EV 50; energy storage system - NiMH batteries; power inverter - Dual Power Inverter Module
serial
parallel
●
traction Motor Vossloh Kiepe ASM 240 kW, generator Vossloh Kiepe SG500.45, Pn: 200 kW, supercapacitors 125V, traction battery Vossloh Kiepe ESM 201, brake resistor, traction roof container DGG 151, plug-in, electrical accessories
● ●
Voith DIWAhybrid drive unit (motor/generator) 150 kW, Supercapacitors 125 V, Voith inverter Fuel tank 250 l
●
●
●
350 l
○
○
○
●
●
●
Spheros (Webasto)
●
●
●
Eberspächer (bio-fuel heater)
○
○
○
ZF RL 75 EC (independent suspension)
●
●
●
ZF RL 85 A
AdBlue tank - 40 l Auxiliary heating system
Front axle
○
○
○
Drive axle - ZF AV 132
●
●
●
Centre axle - ZF AVN 132
●
●
●
central lubrication point - solid oil
●
●
●
Vogel KFBS1 with self-diagnostic facility - for semi-fluid grease
○
○
○
Steering - ZF Servocom 8098
●
●
●
Urbino 18 Hybrid - Allison Transmission
Brakes - EBS electronic (dual-circuit) braking system incorporating the anti-blocking system (ABS) and the traction control system (ASR), parking (hand) brake with emergency release function from the driver’s seat, bus stop brake
●
●
●
Interior height Turning circle
electrodynamic brake
●
●
●
exhaust brake
●
Chassis
Central lubrication
2370 [mm] ~23 [m]
Auxiliary brakes
●
transmission - integrated returder Suspension levelling system - ECAS II air suspension with kneeling function, raising by some 60 mm, lowering by 70 mm
●
●
●
Bodywork frame - stainless steel
●
●
●
Side panels - stainless steel and aluminium panels
●
●
●
1-2-2 2-2-2 1-2-2-2 2-2-2-2
1-2-2 2-2-2 1-2-2-2 2-2-2-2
1-2-2 2-2-2 1-2-2-2 2-2-2-2
Bodywork
Door arrangement
1 and 2 door
320 mm
320 mm
320 mm
3rd and 4th door
340 mm
340 mm
340 mm
●
●
●
Passenger capacity seated (depending on the equipment)
40-51 + 1
46 + 1
45-49 + 1
Air-conditioning in the driver’s cabin - with electrical drive
○
○
○
Air-conditioning in the driver’s cabin and passenger compartment - with mechanical drive
○
○
○
Ventilation system - dual-function fans (blowing and extraction facility)
●
●
●
Roof hatches - electric
●
●
●
convector-type heaters
●
●
●
2-stage blowers
●
●
●
nd
Ventilation and air-conditioning
Access ramp - wheelchair ramp at the 2nd entrance, positioned and stowed away manually
Electrical system
Interior height Turning circle
Maximum entrance height st
Urbino 18 Hybrid - Vossloh Kiepe 2370 [mm] ~23 [m]
Passenger compartment heating system
Interior height Turning circle
Wiring looms and boards CAN-Bus based electrical system
Urbino 18 Hybrid - VoithDIWA
●
●
●
2370 [mm] ~23 [m]
Urbino 12 Hybrid - Eaton
Urbino 12 Hybrid - Škoda
Cummins ISB6.7 225H (162 kW)
●
●
Cummins ISB6.7 EV 300 (221 kW)
○
standard ●
option ○
Engine
Hybrid system type Eaton drive unit - HDU (TA-C84), energy storage system - Li-lon batteries, (PEC) power control unit - Inverter (DC/AC and AC/DC) controllers - HCM, TECU
równoległy
●
traction Motor Škoda 4ML3444 K/4 160 kW, generator Kiepe PME250/7, supercapacitors, traction battery, brake resistor, electrical accessories Driveline
równoległy
●
Fuel tank
●
175 l 250 l
●
350 l
○
AdBlue tank - 40 l
●
○ (not in combination with traction batteries)
○ (not in combination with traction batteries)
●
Auxiliary heating system Spheros (Webasto)
●
Eberspächer (bio-fuel heater)
○ ●
ElTop TJ 30.2 (electric heater) Front axle ZF RL 75 EC (independent suspension)
●
●
ZF RL 85 A
○
○
●
●
central lubrication point - solid oil
●
●
Vogel KFBS1 with self-diagnostic facility - for semi-fluid grease
○
○
Steering - ZF Servocom 8098
●
●
Brakes - EBS electronic (dual-circuit) braking system incorporating the anti-blocking system (ABS) and the traction control system (ASR), parking (hand) brake with emergency release function from the driver’s seat, bus stop brake
●
●
electrodynamic brake (recuperation)
●
●
exhaust brake
●
●
Suspension levelling system - ECAS II air suspension with kneeling function, raising by some 60 mm, lowering by 70 mm
●
●
Bodywork frame - stainless steel
●
●
Drive axle - ZF AV 132
Chassis
Central lubrication
Auxiliary break
●
●
1-2 2-2 1-2-2 2-2-2
1-2 2-2 1-2-2 2-2-2
Ist and 2nd door
320 mm
320 mm
3rd door
340 mm
340 mm
Side panels - stainless steel and aluminium panels
Bodywork
Door arrangement
Maximum entrance height
Ventilation and air-conditioning
Access ramp - wheelchair ramp at the 2nd entrance, positioned and stowed away manually
●
Passenger capacity seated (depending on the equipment)
25-37 + 1
25-36 + 1
Air-conditioning in the driver’s cabin - with electrical drive
○
○
Air-conditioning in the driver’s cabin and passenger compartment
○
with mechanical drive
2317 [mm] ~21,4 [m]
○
Ventilation system - dual-function fans (blowing and extraction facility)
●
●
Roof hatches - electric
●
● ●
Passenger compartment heating system
Electrical system
Interior height Turning circle
○
with electrical drive
convector-type heaters
●
●
2-stage blowers
●
●
●
●
Wiring looms and boards CAN-Bus based electrical system
Urbino 12 Hybrid - Škoda
Urbino 12 Hybrid - Eaton Interior height Turning circle
2317 [mm] ~21,4 [m]
Solaris Bus & Coach S.A. ul. Obornicka 46, 62-005 Owińska, Poland Tel. +48 61 667 2333, Fax +48 61 667 2310
[email protected], www.solarisbus.com This leaflet is not a commercial offer in the sense of the art. 66, ß 1 of the Polish Civil Code. Printed: 09.2012, copies: 1500
