PACCAR MX-11
New Generation Coach & Bus engine (Euro 6)
The New Generation 10.8 Litre PACCAR MX-11 engine further lowered its CO2 footprint. Excellent and increased torque at low engine speeds and a high performance is available over a wide engine speed range. The MX-11 is the best solution for Coaches & Buses demanding best performance against lowest TCO.
Aspired by double overhead cam system, the further optimized combustion process, the reduction of parasetic losses and an improved air management system result in excellent and lowest fuel consumption.
Using state of the art technologies we achieve highest reliability and durability. R&M costs are further decreased including a maintenance interval up to 150.000km. The best engine has become even better and is ready for the future
PACCAR MX-11 coach & bus engine
| Engine Type | Performance | Torque | Emission level |
| MX-11 220 | 220 kW/299 hp at 1,600 rpm | 1450 Nm at 900–1,400 rpm | Euro 6 |
| MX-11 251 | 251 kW/341 hp at 1,600 rpm | 1650 Nm at 900–1,400 rpm | Euro 6 |
| MX-11 270 | 270 kW/367 hp at 1,600 rpm | 1950 Nm at 900–1,125 rpm | Euro 6 |
| MX-11 300 | 300 kW/408 hp at 1,600 rpm | 2150 Nm at 900–1,125 rpm | Euro 6 |
| MX-11 330 | 330 kW/449 hp at 1,600 rpm | 2350 Nm at 900–1,125 rpm | Euro 6 |
• (Bio) Diesel fuel must comply with EN-590 / EN-15940 / EN-16734 / EN-16709
• Weight (dry) ± 998 kg| MX-11 ENGINE | |
| No. of cylinders and cylinder | 6 in line, vertical |
| Valves | 4 |
| Bore x Stroke [mm] | 123 x 152 |
| Piston displacement [dm3] | 10.8 |
| Compression ratio |
18,5 : 1 |
| Aspiration | Turbocharged with charge cooling |
| Idle speed [rpm] | 550 +50 -25 |
| High idle speed [rpm] | 2100 |
| Max. speed during engine brake [rpm] | 2100 |
| Firing order | 1-5-3-6-2-4 |
General description
- Compact Graphic Iron (CGI) cylinder block with vertical rips for max. strength & low noise
- One piece CGI cylinder head with double overhead camshafts and integrated air intake manifolds
- Forged steel crankshaft without contra weights
- Wet liners with anti-polishing ring
- Oil cooled pistons with 3 piston rings each
- Low noise rear mounted distribution drive
- 2500 bar common rail fuel injection with block integrated high pressure unit pumps
- Fuel injectors with variable needle opening pressure
- Electronic controlled single stage (VTG) turbo charging system
- SCR/DPF exhaust after treatment module together with cooled EGR technology
- Electronically driven Crankcase Ventilation System
Lubrication system
- Pressure feed lubrication by a variable vane -type oil pump. Full flow main oil filter and a centrifugal by-pass filter (optional).
Cooling system
- Water cooled thermostatically controlled and full variable water pump
Electrical / electronic system
- Voltage: 24V
- Starter motor: 6.2 kW
- Alternators: 2 x 150 A, LIN controlled
Standard equipment
- Flywheel: TD 285 suitable for automated gearboxes
- Flywheel housing: SAE 1
- Stainless steel oil cooler module thermostatically controlled
- Electrically controlled back pressure valve (BPV)
- Inlet and exhaust manifolds
- Integrated fuel filter, water separator and pre-filter
- Flat oil sump Alu
- Exhaust After Treatment System (EAS) incl. Ad-Blue tank and control units
- Low energy air compressor with power saving system, 564 cc displacement
- Steering pump, 25cc 17,5 l/min, variable displacement
- Engine mountings support, 4 bracket system
- Oil level sensor for daily check
Options
- Gear driven rear engine PTO’s
- Belt driven front engine PTO’s
- Steering pump variants
- Engine mounting vibration dampers
- Flywheels suitable for ZF, Voith and Allison automatic gear boxes
- Integrated engine compression brake with enhanced braking power max. 340kW
- Air compressor with power saving system, 636cc
- Adblue tank variants
- SCR/DPF module variants
- Extended Service Interval
- Engine and chassis installation parts on request