CAT®

CG170 Series Gas Generator Sets

CAT CG170

SMARTER

ENERGY

SOLUTIONS

COMMERCIAL AND INDUSTRIAL FACILITIES

Facilities such as manufacturing plants, resorts, shopping

centers, office or residential buildings, universities, data

centers and hospitals reduce operating costs and carbon

footprint simultaneously.

ELECTRIC UTILITIES

Caterpillar has led innovation to deliver stationary and

containerized gas power plants to electric utilities

and district energy facilities around the world for both

continuous grid support and peak electricity demand.

MINES

Mining operators increase mine safety and reduce

carbon emissions with coal gas, while many other mining

operations are realizing the benefits of onsite gas power

generation to support greenfield site development.

AGRICULTURE AND FOOD / BEVERAGE PROCESSING

Biogas, a useful byproduct of the anaerobic digestion

of organic waste, is created by food processors, ethanol

and biodiesel manufacturers, and farms around the

world as a renewable fuel resource for Cat® powered

electricity generation.

LANDFILLS AND WASTEWATER TREATMENT PLANTS

Landfill and sewage gases are is generated by communities

around the world as part of sanitary process infrastructure.

Instead of destroying or flaring the methane gas produced,

communities make beneficial use of this fuel as part of a

sustainable energy program.

GREENHOUSES

In greenhouses, Cat gas generator sets simultaneously deliver

electricity for lighting or sale to the local grid, hot water for

facility heating, and carbon dioxide as an organic fertilizer for

increased crop production.

®

Installed capacity of 3,866 MWel with more than 2,854 generator sets worldwide

MEETING YOUR NEEDS HAS SHAPED OUR HISTORY

At Caterpillar, we understand what it takes to deliver a successful gas power generation system, and it starts with a core machine that

is designed for efficiency and reliability. Since the 1920s, Caterpillar has been designing and building engines for power production.

Although the technology has changed over the years, the philosophy hasn’t: to deliver the most reliable power generation at the lowest

possible cost of ownership and operation. Today, Caterpillar not only manufactures power generation equipment, but we also provide

customized project financing and trade solutions via Cat Financial and Cat World Trade.

THE COMPLETE SOLUTION

Caterpillar is your complete gas solutions partner. From mechanical systems such as gas fuel train and heat recovery systems, to

exhaust aftertreatment that complies with the world’s most stringent emission requirements, Cat Gas Solutions engineering works with

your local Cat dealer to deliver a complete scope of supply. Caterpillar also provides electrical systems such as master controls and

paralleling switchgear, electrical distribution switchgear and uninterruptible power supplies (UPS) that can meet either

UL or IEC requirements.

PRODUCT SUPPORT WORLDWIDE

Your gas power system is supported by our factory trained global network of Cat dealers. Therefore, you can rest assured that your

equipment will be ordered, delivered, installed and commissioned in consultation with a local expert. You’ll also have the confidence

that Caterpillar will be there to keep you up and running. Cat dealers have over 1,600 dealer branch stores operating in 200 countries

to provide the most extensive post-sales support including oil and fuel monitoring services, preventive maintenance and comprehensive

customer support agreements.

LOWER LIFE CYCLE COST

With longer maintenance intervals, higher fuel efficiency and competitive repair options, Caterpillar delivers the lowest total owning

and operating costs. When you design your facility within the Cat Application and Installation Guidelines, you can expect generator set

availability up to 99 percent of planned operating hours annually. It all adds up to a strong return on your investment, year after year.

217 MWel

697 MWel

1541 MWel

434 MWel

472 MWel

505 MWel

CG170:

HIGH PERFORMANCE WITH

LOW OPERATING COSTS

HIGHLY EFFICIENT

With recent improvements of inlet ducting, combustion chamber design and high efficiency spark

plugs, the CG170 gas generator delivers up to 43.7

percent electrical efficiency and more recoverable

heat while reducing carbon emissions.

LOWER OPERATING COSTS

An optimized lubrication system means that the

CG170 consumes up to 1,900 liters (500 gallons)

less lubricating oil each year than competing

gas generators, which means more money stays

in your company’s pockets.

GREATER AVAILABILITY

The CG170 utilizes soot-free combustion with

chamber plugs for extended maintenance

intervals up to 4,000 hours. Newly optimized

blow-by gas recirculation reduces turbocharger

maintenance intervals and boosts efficiency.

SYSTEM CONTROL

Control the entire system, not just the engine,

with the Cat Total Electronic Management System.

Control or monitoring of ancillary equipment such

as heat recovery modules, exhaust aftertreatment

and fuel treatment systems becomes seamless.

Features like temperature monitoring for each

cylinder and anti-knock control allow for maximum

power output and the best possible fuel utilization,

even with fluctuating gas composition.

HIGH ALTITUDE AND

AMBIENT PERFORMANCE

When your facility requires operation isolated

from the electric utility grid, an optimized

CG170 turbocharging system is provided

to ensure transient load response that will

keep your operation running.

ENGINE TYPE CG170-12 CG170-16 CG170-20

Configuration RW5) K6) R7) K6) R7) R7) P8)

Electrical power 3) kW 1,000 1,125 1,200 1,500 1,560 2,000 2,000

Mean effective pressure bar 15.5 17.4 18.6 17.5 18.1 18.6 18.6

Thermal output 4) ±8 % kW 1,056 1,267 1,189 1,688 1,576 1,983 1,912

Electrical efficiency 3) % 43.0 40.7 43.7 40.8 43.3 43.7 44.4

Thermal efficiency 3) % 45.4 45.8 43.3 45.9 43.8 43.3 42.5

Total efficiency 3) % 88.4 86.6 87.0 86.7 87.1 87.0 86.9

1) Transport dimensions for gensets, components set up separately must be taken into

consideration.

2) NOx ≤ 500 mg/Nm³; exhaust gas dry at 5 % O2.

3) According to ISO 3046-1 at U = 0.4 kV, cosphi = 1.0 for 50 Hz and a methane number of

MN 80 (TCG 2020) or MN 70 (TCG 2020K) for natural gas.

4) Exhaust gas cooled to 120 °C for natural gas and 150 °C for biogas.

5) RW = High Response for Requested Power. Optimized for high total efficiency at

requested power.

6) K = Robustness. Optimized for robustness and low CAPEX.

7) R = High Response. Optimized for high total efficiency.

8) P = High Efficiency. Optimized for high electrical efficiency.

9) XW = Biogas for Requested Power. Optimized for operation with biogases at requested power.

10) X = Biogas for Requested Power. Optimized for operation with biogases at requested power.

Data for special gas and dual gas operation on request.

The values given on these datasheets are for information purposes only and not binding.

The information given in the offer is decisive. Contact your Cat dealer for site and fuel

specific performance.

50 Hz PRODUCT PERFORMANCE

NATURAL GAS

NOX ≤ 500 mg/Nm 3, 1 g/bhp-h

BIOGAS

NOx ≤ 500 mg/Nm³ 2)

Sewage gas (65% CH4 / 35% CO2)

Biogas (60% CH4 / 32% CO2, Rest N2)

Landfill gas (50% CH4 / 27% CO2, Rest N2)

Minimum heating value Hu = 5.0kWh/Nm3

ENGINE TYPE CG170-12 CG170-16 CG170-20

Bore/stroke mm 170/195 170/195 170/195 170/195 170/195 170/195 170/195

Displacement dm3 53.1 53.1 53.1 70.8 70.8 88.5 88.5

Speed rpm 1500 1500 1500

Mean piston speed m/s 9.8 9.8 9.8 9.8 9.8 9.8 9.8

Length 1) mm 4,660 4,790 4,790 5,430 5,430 6,200 6,200

Width 1) mm 1,810 1,810 1,810 1,810 1,810 1,710 1,710

Height 1) mm 2,210 2,210 2,210 2,210 2,210 2,190 2,190

Dry weight genset kg 11,200 11,700 11,700 13,300 13,300 17,900 17,900

ENGINE TYPE CG170-12 CG170-16 CG170-20

Configuration XW9) X10) X10) X10)

Electrical power 3) kW 1,000 1,200 1,560 2,000

Mean effective pressure bar 15.5 18.6 18.1 18.6

Thermal output 4) ±8 % kW 1,035 1,192 1,566 2,010

Electrical efficiency 3) % 42.6 43.0 42.7 43.0

Thermal efficiency 3) % 44.1 42.7 42.9 43.2

Total efficiency 3) % 86.7 85.7 85.6 86.2

ENGINE TYPE CG170-12 CG170-16 CG170-20

Configuration X7) X7) X7)

Electrical power 3) kW 1,200 1,560 2,000

Mean effective pressure bar 18.7 18.3 18.7

Thermal output 4) ±8 % kW 1,201 1,580 2,024

Electrical efficiency 3) % 42.7 42.3 42.7

Thermal efficiency 3) % 42.7 42.8 43.2

Total efficiency 3) % 85.4 85.1 85.9

ENGINE TYPE CG170-12 CG170-16 CG170-20

Configuration K5) R6) K5) R6) R6)

Electrical power 3) kW 1,125 1,200 1,500 1,560 88.5

Mean effective pressure bar 17.4 18.7 17.6 18.3 170/195

Thermal output 4) ±8 % kW 1,274 1,196 1,703 1,589 1,997

Electrical efficiency 3) % 40.4 43.4 40.4 43.0 43.4

Thermal efficiency 3) % 45.8 43.2 45.9 43.8 43.3

Total efficiency 3) % 86.2 86.6 86.3 86.8 86.7

60 Hz PRODUCT PERFORMANCE

NATURAL GAS

NOX ≤ 500 mg/Nm3

, 1 g/bhp-h

BIOGAS

NOx ≤ 500 mg/Nm³ 2)

Sewage gas (65% CH4 / 35% CO2)

Biogas (60% CH4 / 32% CO2, Rest N2)

Landfill gas (50% CH4 / 27% CO2, Rest N2)

Minimum heating value Hu = 5.0kWh/Nm3

ENGINE TYPE CG170-12 CG170-12 CG170-20

Bore/stroke mm 170/195 170/195 170/195 170/195 170/195

Displacement dm3 53.1 53.1 70.8 70.8 88.5

Speed rpm 1500 1500 1500

Mean piston speed m/s 9.8 9.8 9.8 9.8 9.8

Length 1) mm 5,970 5,970 6,640 6,640 7,470

Width 1) mm 1,790 1,790 1,790 1,790 1,710

Height 1) mm 2,210 2,210 2,210 2,210 2,190

Dry weight genset kg 13,000 13,000 14,900 14,900 19,800

1) Transport dimensions for gensets, components set up separately must be taken into

consideration.

2) NOx ≤ 500 mg/Nm³; exhaust gas dry at 5 % O2.

3) According to ISO 3046-1 at U = 0.48kV, cosphi = 1.0 for 60 Hz and a methane number of

MN 80 (TCG 2020) or MN 70 (TCG 2020K) for natural gas.

4) Exhaust gas cooled to 120 °C for natural gas and 150 °C for biogas.

5) K = Robustness. Optimized for robustness and low CAPEX.

6) R = High Response. Optimized for high total efficiency.

7) X = Biogas. Optimized for operation with biogases.

Data for special gas and dual gas operation on request.

The values given on these datasheets are for information purposes only and not binding.

The information given in the offer is decisive. Contact your Cat dealer for site and fuel

specific performance.

© 2021 Caterpillar. All Rights Reserved. CAT, CATERPILLAR, LET’S DO THE WORK, their respective logos,

“Caterpillar Yellow”, the “Power Edge” and Cat “Modern Hex” trade dress as well as corporate and

product identity used herein, are trademarks of Caterpillar and may not be used without permission.

LEBE0017-02 March 2021

For more information and to contact your local Cat dealer,

visit cat.com/powergeneration