ISX12N (2018)

Overview

ISX12N (2018)

The 2018 ISX12N continues the evolution of emission leading natural gas engines from Cummins Westport, with the lowest certified Ultra Low NOx emission engines in North America – 90% lower than current North American EPA standards. With 400 hp / 1,450 lb-ft torque, and near zero emissions, the ISX12N is well suited for heavy-duty regional-haul truck/tractor, vocational, and refuse applications.

Reduced Emissions from Heavy Duty Trucks

• Lowest cost Move to Zero option: Minimal cost impact vs current natural gas product
• No infrastructure changes for current natural gas fleets
• Vehicles cost up to 70% less than electric
• Leverage existing fuel locations and expanding service/parts network
• No extra training needed and no operating cost changes for current natural gas fleets

• Available from leading truck manufacturers for heavy duty on highway transport, port drayage, refuse, vocational, and conventional truck applications
• Certified to EPA and California ARB optional Near Zero emissions standard
- Reduces smog forming NOx emissions by 90% vs. EPA 2010 standard
- One 2010 certified vehicle = the NOx emissions of TEN ISX12N vehicles

• Capable of operating on 100% CNG, LNG, or renewable natural gas (RNG)
− Significant GHG reductions with the use of RNG
− Learn more with CWI’s GHG Emissions Calculator - http://cwiplaybook.com/assess/greenhouse-gas-emissions-calculator/


The Natural Choice

  • Natural gas is the lowest carbon fuel available, with abundant domestic supply and stable pricing
  • Fueling infrastructure in place and growing

For additional information visit cumminswestport.com and cwiplaybook.com.



Specifications

NOx emission 0.02 g/bhp-hr. (90% below EPA)
Maximum Horsepower 400 HP (298 kW)
Peak Torque 1,450 LB FT (1,966 Nm)
Goverened Speed 2100 RPM
Type 4-cycle, spark-ignited, in-line
6 cylinder, turbocharged, CAC
Engine Displacment 762.2 CU IN (119.9 Liters)
Number of Cylinders 6
Operating Cycles 4
Net Weight (dry) 2,650 LB (1,202 KG)
Fuel Type CNG/LNG/Biomethane
Aftertreatment Three-Way Catalyst
Base Warranty 2 Years, 250,0000 Miles (402,336 KM)

Product Finder Specifications

Markets
Natural Gas
Power 400 hp / 298 kW
Torque 1450 lb-ft / 1966 N•m

Ratings

Engine Model Advertised Horsepower (kW) @ rpm Peak Torque lb-ft (Nm) @ rpm Governed Speed
Line Haul / Regional Haul Truck & Vocational
ISX12N 320 320 (239) @ 1700
1150 (1559) @ 1200
2100 rpm
ISX12N 330 330 (246) @ 1700 1250 (1695) @ 1200 2100 rpm
ISX12N 350 350 (261) @ 1700 1450 (1966) @ 1200 2100 rpm
ISX12N 385 385 (287) @ 1700 1350 (1830) @ 1200 2100 rpm
ISX12N 400 400 (298) @ 1700 1450 (1966) @ 1200 2100 rpm
Commuter Coach
ISX12N 400 400 (298) @ 1700 1450 (1966) @ 1200 2100 rpm
Motorcoach
ISX12N 320 320 (239) @ 1700 1150 (1559) @ 1200 2100 rpm
ISX12N 330 330 (246) @ 1700 1250 (1695) @ 1200 2100 rpm
ISX12N 350 350 (261) @ 1700 1450 (1966) @ 1200 2100 rpm
ISX12N 385 385 (287) @ 1700 1350 (1830) @ 1200 2100 rpm
ISX12N 400 400 (298) @ 1700 1450 (1966) @ 1200 2100 rpm
Refuse
ISX12N 320 320 (239) @ 1700 1150 (1559) @ 1200 2100 rpm
ISX12N 330 330 (246) @ 1700 1250 (1695) @ 1200 2100 rpm
ISX12N 350 350 (261) @ 1700 1350 (1830) @ 1200 2100 rpm
ISX12N 350 350 (261) @ 1700 1450 (1966) @ 1200 2100 rpm


Features

• Heavy Duty Class 8 performance and efficiency
• New electronic engine, ignition, and On-Board Diagnostics (OBD) emission control features.
• New engine control module – ECM model number CM2380.
• Closed Crankcase Ventilation system for more complete combustion and lower emissions

Maintenance

ISX12 N Truck and Motorcoach

Overall, maintenance for the ISX12N is similar to that of diesel engines, but there are a few key differences:

Motor oil specifically formulated for natural gas engines is required. Do not use diesel engine oil in a natural gas engine. If diesel engine oil is used, valve torching, piston scuffing and reduction in spark-plug life will occur.

For more information, see the links below or visit Cummins QuickServe Online.
New Natural Gas Engine Oil Specification (CES 20092)
Extended Oil Drain Intervals with CES 20092 Natural Gas Engine Oils

Maintenance Item^ Hours Distance Months
Oil & Filter* 500 25,000 mi (40,000 km) 6
Spark Plugs 1,000 50,000 mi (80,000 km) 12
Coolant Filter 1,500 75,000 mi (120,000 km) 12
Overhead Set Adjustment** 3,000 150,000 mi (240,000 km) 2 yrs
Cooling System Flush 6,000 300,000 mi (480,000 km) 2 yrs
Engine Brake Adjustment 6,000 300,000 mi (480,000 km)  2 yrs
Closed Crankcase Ventilation Filter 10,000 500,000 mi (800,000 km) 5 yrs
Ignition Coil Extension 10,000 500,000 mi (800,000 km) 5 yrs
Air cleaner / element Follow manufacturer's published recommendations

Consult your Owners or Operation and Maintenance manual for the complete daily and routine maintenance schedule.
^Based on duty cycle of 50 mph / 80 kmh average speed.  Distance intervals may decrease based on average speed.
*Requires Natural Gas Engine Oil.  These intervals apply to normal duty line haul truck and motorcoach applications using CES 20085 or 20092 natural gas oil.  For customers using CES 20092 natural gas engine oils only, the recommended interval is 40,000 mi (64,000 km) for vehicles with average road speeds greater than 25 mph (40 kph).
**Initial oververhead set adjustment at 1,000 hours

Brochures Available

Title Bulletin Number Request View  
CWI 2018 All Products Brochure View  Download
CWI ISX12N Brochure 5544037 Request View  Download
Integrated Power Flyer 5411035 Request View  Download
Natural Gas Engine Oils Request View  Download