Perfectly AdaptedISX12 Euro 6 Gas Engine 320-400PS

Cummins ISX12 G

Cummins natural gas products are known

for excellent torque, high fuel efficiency and

uncompromising performance. They are noticeably

quieter than diesel engines throughout the

operating range and 50% quieter at idle. Using

many of the same parts, they are built on the

rugged, reliable design of the Cummins diesel

engine platforms. For the operator, this brings

clean, reliable and cost-effective power for all their

transportation needs.

Cummins ISX12 G is the latest addition to the natural

gas range, available for use in a variety of alternative

fuel applications, including tractor units and rigid

trucks. With a displacement of 11.9 litres, power ratings

up to 400 PS (298 kW) and a 1966 Nm peak torque,

the ISX12 G is the natural choice for demanding gas

powered applications at EPA 2013 and Euro 6 emissions.

Featuring proven stoichiometric cooled Exhaust Gas

Recirculation (EGR) combustion technology, spark

ignition and simple exhaust aftertreatment, the ISX12 G

delivers strong pulling power and heavy-duty durability

and performance that customers can depend on.

The cooled-EGR system takes a measured quantity of

exhaust gas and passes it through a cooler to reduce

temperatures before mixing it with fuel and the incoming

air charge to the cylinder. This lowers combustion

temperatures and knock tendency, reducing engine out

emissions and noise.

Stoichiometric combustion is the ideal combustion

process where all fuel and oxygen is completely

consumed. This means that no unburned fuel

or oxygen exits through the exhaust. Combined

with cooled EGR it improves power density and fuel

economy to create a high performance natural gas

engine. It also enables the use of simpler, lower cost

exhaust aftertreatment systems.

The ISX12 G is a dedicated natural gas engine, based

on the Cummins ISX12 diesel engine. It operates on

100 percent clean burning low cost natural gas. The

ISX12 G is manufactured on the same assembly line

as the Cummins diesel engines and it shares many

components and parts with Cummins ISX Series

diesels, inheriting their renowned power and durability.

The clean ISX12 G meets the ultra-low emissions of

EPA2013 and is easily capable of Euro 6.

Perfectly Adapted

Cooled-EGR Combustion Technology – with a

pedigree of over 1 million engines to date, Cummins

cooled EGR technology is proven in a wide range of

installations. The use of cooled EGR in combination

with stoichiometric combustion improves power

density and fuel economy versus lean-burn

or traditional stoichiometric natural gas engines.

Maintenance-Free Aftertreatment – Three-Way

Catalysts (3WCs) are effective, simple devices,

packaged as part of the muffler, that provide

consistent emissions control performance and are

maintenance-free. The ISX12 G will not require a

Diesel Particulate Filter (DPF) or Selective Catalytic

Reduction (SCR) system.

Fully Integrated Electronic Controls – a single higher-

capacity electronic Control Module (ECM) controls

everything from air intake to exhaust aftertreatment

for peak performance and near-zero emissions. It has

a full interface capability to Cummins INSITE and

diagnostic service tools.

We'll evolve tomatch your needs

Features and Benefits

Compact Design – designed from the ground up

to be the best medium-bore engine in the industry.

Compact and powerful, the ISX12 G has plenty of

torque to pull every load while delivering optimum fuel

economy. Based on the ISX12, it shares many major

components with the ISX15, so it’s strong enough to

handle virtually any application.

Fuel System – the natural gas can be stored on

the vehicle in either compressed (CNG) or liquefied

(LNG) form. The ISX12 G can also operate on

renewable natural gas or biomethane that meets

fuel-quality specifications.

High-Energy Ignition System – spark ignited system

providing better performance and longer service

intervals with improved spark-plug and coil durability.

Advanced Air Handling – electronic control for

precise air handling. Wastegated turbocharger with

water-cooled bearing housing for durability.

High Power and Torque – available up to 400 ps

with 1966 Nm of torque for alternative fuel truck and

coach applications.

Engine braking – the ISX12 G is available with

an optional engine brake, reducing wear on

service brakes.

Global Support – backed by the widest

network in the industry, with over 5,000 service

outlets worldwide. Contact your local customer

assistance centre for technical support, details

on cumminsengines.com

Specifications

POWER (PS) 320-400

PEAK TORQUE (NM) 1599-1966

GOVERNED SPEED (RPM) 2100

NO. OF CYLINDERS 6

DISPLACEMENT (LITRES) 11.9

DRY WEIGHT (KG) 1202

Cummins has always been a pioneer in product development.Thus specifications may change without notice.Illustrations may include optional equipment.

Cummins Ltd. Yarm Road, Darlington, DL1 4PW, UKTel: +44 (0) 1325 554829 Fax: +44 (0) 1325 362481E-Mail: enquiries.engines@cummins.com

www.cumminsengines.com

Bulletin No: 4971388 (web version). Printed in UK 08/12©2012 Cummins Inc