new paccar mx 11 euro 6 engine eng

8/19/2019 New Paccar Mx 11 Euro 6 Engine Eng

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SF 5001.05 (02.08)

Pers/Press/ Presse /Prensa/Stampa

Hugo van der Goeslaan 1

Postbus 90065

5600 PT Eindhoven

Tel : +31 (0)40 214 21 04

Fax: +31 (0)40 214 43 17

Internet: www.daf.com

A brand new development for Euro 6 with outputs of 290 to 440 hp:

PACCAR MX-11 engine off ers maximum performance and efficiency

• State-of-the-art 10.8-litre six-cylinder in-line engine for Euro 6

• Newly designed engine block for optimum stiffness and integration

• Cylinder head with double overhead camshafts

• High-pressure common rail fuel injection system, for injection pressures of up to 2,500 bar

• Turbo charger with variable geometry

• Innovative technologies for maximum efficiency: integration of functions, encapsulated

wiring harnesses and advanced management systems

DAF Trucks is announcing a brand new generation of engines with a displacement

volume of 10.8 lit res and outputs ranging from 290 to 440 hp. The new state-of-the-artPACCAR MX-11 engine is compact and offers optimum fuel efficiency and a low weight

and noise level, in combination with excellent performance and maximum reliability. The

new PACCAR MX-11 engine, developed and bui lt by DAF Trucks in Eindhoven, is

scheduled to go into p roduction in the autumn of 2013 and wil l be available in the new

DAF Euro 6 CF and XF series.

"The new PACCAR MX-11 engine fits completely in the trend towards achieving high efficiency

at lower displacement volumes", explains Ron Borsboom, member of the Board of Management

of DAF Trucks with responsibility for Product Development. "11 litres is the ideal displacement



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volume for achieving outputs of 290 hp to 440 hp within the requirements of the Euro 6

legislation and using reliable single-stage turbo technology. When developing the PACCAR MX-11 engine, we started with a clean sheet of paper. Our main development criteria were high

performance, low weight and fuel consumption, as well as maximum reliability and durability and

excellent vehicle availability. The new PACCAR MX-11 engine has service intervals of up to

125,000 km".

Double overhead camshafts

The PACCAR MX-11 engine block is a completely new design. It is made of strong compactgraphite iron, with vertical ribs to maximize strength and achieve low noise levels. As with the

12.9 litre PACCAR MX-13 engine, as many functions as possible have been integrated to

maximize reliability and durability. Pipes, for example, have been cast into the cylinder block and

the two pump units that generate pressure for the common rail system have been worked into

the block. The timing gear case and the pre-separator of the crankcase ventilation system have

also been nicely integrated into the engine block.

The double overhead camshafts are a key feature of the new cylinder head, which has four

valves per cylinder and an integrated inlet manifold. "This configuration offers significant

advantages", explains Ron Borsboom. "Firstly, the valve train can be configured in a smart and

more robust manner, which optimizes durability. The cylinder head is also extremely robust,

which enables us to use higher top pressures combined with larger reserves; these factors are

key to improving durability and reliability as well as efficiency. Direct valve control also has a

positive effect on fuel consumption, as it minimizes losses. The double overhead camshafts

ensure that the integrated MX Engine Brake delivers an outstanding brake performance: it

releases more than 70% of its exceptional 320 kW of power at low speeds (1,500 rpm). The

overhead camshafts also help to reduce weight. The camshafts can be hollow as the injection

system is driven by a separate FIE (Fuel Injection Equipment) camshaft, saving 15 kilos in

weight".

Common rail injection and turbo with variable geometry

The new MX-11 engine shares its advanced common rail system with the PACCAR MX-13

engine, although each has its own engine software calibration. The common rail allows high

injection pressures of up to 2,500 bar, and provides the opportunity to use pre- and post-



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injection, or a combination of both. This results in finer fuel atomisation and many more

opportunities to optimise combustion to ensure the lowest possible emission and noise levels,and the best possible fuel efficiency. The fact that the temperature of the exhaust gases can be

controlled so effectively also means that the engine can be optimally integrated with the exhaust

gas after treatment system. We use a turbo charger with variable geometry (VTG), which

ensures that the engine can call on the best turbo settings at all times and across its entire

speed range in order to deliver maximum performance. The EGR system is highly compact and

designed for a perfect mixture of exhaust gases and fresh air. All this technology is controlled

optimally and accurately by three actuators: the Back Pressure Valve, the VTG turbo and theEGR valve. The compact design of the PACCAR MX-11 is also a key feature of the engine,

making it ideal for use in the DAF CF series.

Exhaust gas after-treatment for Euro 6

In order to meet the stringent Euro 6 emission requirements, DAF is using various exhaust gas

after-treatment technologies such as an SCR catalytic converter and an active soot filter. "Just

as with the 12.9 litre PACCAR MX-13 engine, the aim is not only to achieve the right exhaust

gas composition, but also the right temperature in the soot filter", explains Borsboom. "The basic

principle is to have as much passive regeneration of the soot filter as possible by getting the

engine to create the ideal circumstances for this to happen. That is why the exhaust manifold, as

well as the key parts of the exhaust system, have been encapsulated. If despite of this, the

temperature of the exhaust gases drops too low due to a specific vehicle application, the engine

will switch to active regeneration. A seventh injector, placed behind the turbo and in front of the

soot filter, has been added to the engine for this purpose. It can inject fuel into an oxidation

catalytic converter in the exhaust in order to generate exactly the right amount of heat. The SCR

catalytic converter has also been designed to maintain optimum temperatures. Thanks to its

smart coating, it is able to achieve maximum performance across a wider range of temperatures,

which means that the engine can function optimally and in the most efficient way.”

In addition to maximising efficiency, excellent vehicle availability was an important criterion when

developing the exhaust gas after treatment system. Thanks to the low and stable oil

consumption of the PACCAR MX-11 engine, soot filter cleaning intervals of up to 500,000

kilometres are achievable, depending on the truck operation. Another unique feature is the

option of fitting the SCR catalytic converter and the soot filter separately from one another on



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distribution applications. For heavy use, 291 kW/400 hp and 320 kW/440 hp ratings are available

with maximum torques of 1,900 and 2,100 Nm respectively (at 1,000–1,450 rpm).

With high torques at low speeds, outstanding fuel efficiency, market-leading reliability and even

more PTO options, the new PACCAR MX-11 engine will be one of the key engines for the

versatile CF series, of which the new Euro 6 model will be launched in April. The PACCAR MX-

11 engine is also a valuable addition to the DAF Euro 6 XF range. Fuel consumption of the 10.8-

litre PACCAR MX-11 engine is on average even another up to 3% lower than that of the already

very fuel efficient 12.9-litre PACCAR MX-13 engine, and the weight reduction of over 180kilograms presents another opportunity to further increase efficiency, particularly in bulk and tank

transport.

DAF Trucks N.V. — a subsidiary of the American company PACCAR Inc, one of the world's largest manufacturers of heavy-dutytrucks — is a leading manufacturer of l ight, medium and heavy-duty trucks. In 2012, it held an EU market share of 16% in theover 16 tonnes category and continued market leadership in the tractor segment. DAF manufactures a complete range oftractors and rigids, offering the right vehicle for every transport application. DAF is also a leader when it comes to providing otherproduct-related services: MultiSupport Repair and Maintenance Contracts, financial services from PACCAR Financial and a first-class parts service. In addition, DAF develops and manufactures components such as axles and engines for bus and coachmanufacturers all over the world. DAF Trucks N.V. has production facilities in Eindhoven in the Netherlands, Leyland in the UKand Westerlo in Belgium, and over 1,000 dealers and service points in Europe..

Eindhoven, March 2013

Note to editors

For more information:

DAF Trucks N.V.Corporate Communication

Peter van Kessel: +31 (0)40 214 2874Rob Appels: +31 (0)40 214 2104www.daf.com

new paccar mx 11 euro 6 engine eng

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