B usToCoach is testing an Irizar model one more time. After two i6 HDH touring co-

aches in a length of 12.2 and 14 metres (see the October and April issue of 2015 Busto-Coach on-line Magazine), it’s high time for Irizar i4 to take to the street. It’s 12.2-metre long and it was chosen amnong the different variants composing the range of the Spani-sh manufacturer: 9 lengths from 10.1 to 15 metres for Integral versions and 12 chassis variants from 9.4 to 15 metres.Made available by Irizar Italy, it could not

THE WINNING COUPLE

Length mm 12,200 Width mm 2,550 Height with AC mm 3,405 Wheelbase mm 6,040 Front Overhang mm 2,690 Rear Overhang mm 3,470 Luggage m3 3.9 Turning Circle mm 22,300 Fuel Tank litres 315 AdBlue Tank litres 45 Test Weight kg 18,020

Routes km km/h km/litreMain Road 228.6 56 3.99Highway (up) 16.5 82.5 2.42Highway (down) 52.2 69.6 4.97Highway (plain) 74.7 91.5 4.87TOTAL 372 63.6 4.15

DIMENSIONS

Performance Index 0 7.39

FUEL COMSUMPTION

Up on the Highway Plain on the Highway

Main Road Down on the Highway TOTAL

BusToCoach on-line Magazine - May 2015 IRIZAR - i4 12.34 L SCANIA K320 EB

TESTkm

/litr

e

4.154.874.97

2.42

3.99

èè

€ 225.000Net price in Italy

IN the ‘L’ version with an aisle lowered to 855

millimetres above the ground, the Irizar i4 has an enlarged single leaf central door that is intended for the assembly of the lift in steps. For this purpose, the four seats at the front door are mounted on a re-movable stand to make space for the area necessary for the wheelchair.There are 53 Irizar fixed seats (reclining upon request), pad-ded, with seat belts and han-dles on the aisle and back.Under the open luggage racks with bottom grid and external handrail, are inserted the stop request buttons, speakers and the small air vents for the tre-ated air by the Hispacold group with capacity of 38 kW. The air blows through the vents in the ceiling. Special attention is paid to the floor heating con-vectors and the interior lighting

provided by oval neon sectors above the luggage racks.The driving seat is protected by a back panel and a low side gate. There is an Isri pneumatic seat, the sun visor is manually split with additional lateral sun

louver to unroll.There is an excellent external visibility along with the in-direct one provided through the streamlined rearview, with three mirrors on the right and two on the left. The rear view

camera is available upon re-quest.Well-ordered the control arran-gement on the dashboard with the battery switch underneath the window and keyboard’s transmission included. •

PASSEGGERI Seats/Standing n. 53 / 20 Internal heigth mm 2,200 Aisle heigth mm 855 Aisle width mm 370 Entrances width mm 660/990 Raks Volume m3 1.1 Comfort Seats type Irizar A.C. Hispacold Heater convectors Roof Hatches Two, manual Glazing double Audio Actia

THE TEST ROUTEPASSENGERS

but appear as an i4 on Scania chassis, since the Scania-Irizar tandem works quite well for over twenty years.So, we have the Scania chassis K320 EB, with Euro VI engine of 320 hp (235 kW) and ZF Ecolife automatic transmission.Ballasted up to 18 tons allowed, the vehicle traveled for 372 kilometers from Milan to Genoa and back (two-thirds of the way along the interurban roads), consuming on average one litre of diesel per 4.15 km and traveling at the average speed of 63.6 km/h.Consumption also in-cludes the equivalent proportion of AdBlue that for the Irizar i4 was equal to 5.5% of the fuel consumed.All in all, the results of Irizar i4 are more than good, with a per-formance index equal to 7.39, just behind the Setra S 415 UL (see the article on the following pages) which gets 7.68 thanks to the better consumption results (4.3 km/litre)

AUTISTA Platform heigth mm 810 Cockpit width mm 930 Cockpit depth mm 1,540 Cockpit heigth mm 2,070 Adjustment seat mm 230 Equipments Seat type Isri Window electric Sunshade double, manual Blinds (left) manual

DRIVER

Threesteps

èè

.

With the transition to the Euro VI, the DC9 engine

mounted on the Irizar i4 main-tains the high performance of the previous Euro V EEV versions. The vehicle under test has a five-cylinder of 9.53-litres, delivering 320 hp. It can provide a torque of 1,600 Nm, on the constant basis between 1,050 and 1,300 rpm.If this is not enough, you can always take the most powerful version, with 360 hp and 1700 NM.The high-pressure common-rail with XPI is kept as an injection system, while the Exhaust Gas Recirculation (EGR) for the re-duction of polluting emission is changed in favour of a muffler that integrates the upstream NOx sensor, diesel oxidation catalyst (DOC), full flow diesel particu-late filter (DPF), AdBlue mixer, twin parallel SCR catalysts, am-monium slip catalysts (ASC) and downstream NOx sensor.

The temperature (°C) is measu-red all the way up to the cataly-sts and the pressure drop (ΔP) across the DPF monitored to as-sess the status of the filter.The gearbox is the automa-tic six-speed ZF Ecolife with

integrated retarder and NBS (Neutral at bus stop) to provide the automatic switch to neutral while stopping. Upon request you can have the automated ei-ght-speed full-retarder Scania Opticruise. •

favored by total vehicle weight of less than about 400 kg. Both vehicles were presented to the test with the ZF automatic transmission.In comparison with the Setra UL, the Irizar i4 comes out well despite having a lower power (320 hp vs 354), however, compensated by a greater torque availability (1,600 Nm vs 1,400), which is very useful in dealing with uphill. For more challenging operations, there is still an option with the same Scania engine but of higher performan-ce (360 horsepower and a torque of 1,700 Nm).The smooth ride is en-sured by controlled suspension as well as breaking is ensured by the EBS.It must be mentioned that the tested i4 pre-sented the interior aisle lowered to 855 mm abo-ve the ground (version L) that serves in addi-tion to lower the center of gravity and thus im-prove driving stability, facilitate the access of passengers. As a result you lose a bit in the luggage compartment capacity that stops at 3.5 cubic metres and gain in space-saving for the wheelchair lift.Also available in the versions ‘H’ with an ai-sle of 1,150 mm above the floor and seats on the raised base or the ‘M’ version with fully interior floor plan.Finally, worthy of note is the external aesthe-tics, which comes close to the touring coach features, starting from the streamlined exte-rior mirrors. •

SCANIA DC 09 108 320 Displacement cc 9,286Bore/Stroke 130/140Geometry vertical 5 in linePosition backPower 320 cv (235 kW)/1,900 rpm Torque Nm 1,600/1,050-1,300 rpmInjection Common rail with XPICompression Ratio 17:1Oil Tank litres 31Pollution Class Euro VI Gas Treatment Doc+Dpf+ScrLife test vehicle km 3,984

TYRESMichelin X Coach295/80 R 22.5 154/149M

SUSPENSIONSFull pneumatic with level’s electro-nic control ELC. Front axle AMI 700 with indipendent wheels. Rear axle ADA 130D.

BRAKESFull disc brakes. Electronically con-trolled EBS5 with ABS, ASR, TC (Traction Control) and integrated hydraulic Retarder.

SAFETYFire alarm system in engine com-partment. Roll-over resistence in accordance with ECE-R 66/01.

TRANSMISSIONThe tested vehicle feets the automatic transmis-sion Zf Ecolife 6AP 1400B with 6 speeds, integra-ted hydraulic retarder and NBS.Transmission Ratio 4.88Acceleration 0-100 km/h sec. 43.8rpm/min

Km/h

Nm

1,600

1,370

1,140

kW

235220

195

170

145

120 1,000 1,200 1,400 1,600 1,800 1,900

22 39 52 74 103 120

0 15 30 45 60 75 90 105 120

rpm/min1,9001,750

875

ENGINE

2nd

1st

Maximum torque

More articles about Irizar: www.bustocoach.com/en/node/487/articoli-costruttore-europa

INTERCITY: 2-AXLE COMPAREDModel km/h km/litre Index

Irizar i4 12.34 E6 63.6 4.15 7.39Setra S 415 UL E6 63.8 4.30 7.68Scania Omniexpress E5 60.8 4.60 7.83 http://www.bustocoach.com/sites/default/files/wfm_upload/newsletter_pdf/novembre_2012_scania_en.pdf

Setra S 415 H E5 61.8 4.47 7.73 http://www.bustocoach.com/sites/default/files/wfm_upload/newsletter_pdf/27.11.2010_setraprova_en.pdf

GEARBOX

3th 4th 5th 6th