3516C Generator Sets Caterpillar


Product Description

Usage:

3516C SCJ
These Cat 3500C Generator Sets consists of an engine, radiator, generator, aftertreatment system and control system.

Intended Use

This Power Generator is to be used to generate electrical power.

Engine Description

3500C Generator Set Engines are electronically controlled diesel engines. The engines have electronic fuel injectors. The engines are equipped with an air-to-air aftercooler (ATAAC).

Engine efficiency and engine performance depend on adherence to proper operation and maintenance recommendations. Use the recommended fuels, lubrication oils, and coolant. Pay special attention to the air cleaner, to the fuel system, to the lubrication system, and to the cooling system maintenance. Refer to the Operation and Maintenance Manual, "Maintenance Interval Schedule" for additional information on maintenance items.

Generator Description

The SR5 brushless generator can be used with the following loads: mixed loads of motors and lights, SCR (Silicon Controlled Rectifier)-controlled equipment, computer centers, installations of communications and petroleum drilling applications.

The generator set packages can be utilized for prime power generation or standby power generation.

SR5 generators are utilized in three-phase full-wave excitation and regulation. The generators are either four or six pole designs. The frame size will determine if the generator has six leads or 12. The generators produce electrical power in either 50 Hz or 60 Hz applications.

Aftertreatment system description

The aftertreatment system for the exhaust combines the following technologies:

  • Ammonia Oxidation (AMOx) Catalyst

  • Diesel Oxidation Catalyst (DOC)

  • Selective Catalytic Reduction (SCR)

The SCR reduces NOX.

The AMOx catalyst controls ammonia slip.

The DOC reduces the following:

  • Carbon monoxide

  • Hydrocarbons

  • Particulate matter (PM)

  • Soluble organic fraction

The DOC, SCR, and AMOx catalysts are packaged together in a module, which is called the Clean Emissions Module (CEM).

Exhaust gas enters into the CEM through the inlet housing and passes through the Diesel Oxidation Catalyst (DOC). The exhaust gas then enters the mixing tube, where the DEF is injected into the exhaust stream. The DEF decomposes into ammonia and carbon dioxide when exhaust temperature exceeds 180° C (356° F). The mixture of exhaust and ammonia travels through the SCR. The ammonia reacts with the NOX in the exhaust stream at the SCR catalyst to produce water vapor and nitrogen. Any ammonia that is left over is cleaned up by the AMOx catalyst.

Dosing Cabinet

The dosing control cabinet controls the following:

  • Rate of DEF flow to the injector

  • Compressed air pressure

The dosing cabinet houses the following:

  • Pump

  • ECM

  • Sensors

  • Manifold

  • DEF tank

  • Valves

  • Heaters

Specifications

Table 1
3500CHD Engine Specifications 
Item  3516CHD Engine 
Rated Speed (rpm)  1800 
Idle Speed (rpm)  1800 
Cylinders and arrangement  60 degree Vee 16 
Bore  170 mm (6.7 inch) 
Stroke  215 mm (8.4 inch) 
Type  four-stroke cycle  
Compression ratio  14:1 
Aspiration  Turbocharged 
Method of cooling the turbocharged air  ATAAC  
Displacement per cylinder  4.88 L (297.7 inch3) 
Total displacement  78.08 L (4764.7 inch3) 
Rotation (flywheel)  Counterclockwise rotation (standard) 
Fuel  See this Operation and Maintenance Manual, "Fluid Recommendations" (Maintenance Section). 
Method of fuel injection  Electronic fuel injectors 
Method of starting  Electric starting motor 
Designed back pressure in the exhaust system(1)  10.4 kPa (41.7 inch of H2O) 
Maximum allowable back pressure(1)  16.4 kPa (66 inch of H2O) 
Maximum customer allocation  6 kPa (24 inch of H2O) 
Maximum inlet air Restriction  6.2 kPa (25 inch of H2O) 
Air cleaners  Single element(2).
Single and Dual element(3) 
(1) Includes CEM.
(2) Single element used with 2.5 MW Generator Sets
(3) Single and Dual element used with 2.0 MW Generator Sets.


Illustration 1g00308357
3516C Engine
(A) Inlet valve
(B) Exhaust valve
(C) Flywheel

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