803667 4 Mercury SEAL

Engines with Series Turbochargers
Illustration 1 g03694010
A typical example of a block diagram for the engine with series turbochargers
(1) Air cleaner
(2) Air inlet temperature sensor
(3) Low-pressure turbocharger
(4) Exhaust gas cooler (NRS)
(5) High-pressure turbocharger
(6) NRS temperature sensor
(7) Exhaust gas valve for the NOx Reduction System (NRS)
(8) NRS inlet pressure sensor
(9) Exhaust gas valve (NRS)
(10) Air-to-air aftercooler
(11) Wastegate regulator
(12) NRS differential pressure sensor
(13) Engine
(14) Coolant temperature sensor
(15) Crankshaft speed/timing sensor
(16) Electronic unit injectors
(17) Camshaft speed/timing sensor
(18) Fuel injection pump and fuel temperature sensor
(19) Fuel pressure sensor
(20) Oil pressure sensor
(21) Atmospheric pressure sensor
(22) ECM
(23) Fuel transfer pump
(24) Primary fuel filter
(25) In-line fuel filter
(26) Boost pressure sensor
(27) Inlet manifold air temperature sensor
(28) Transfer pump inlet regulator
(29) Secondary fuel filter
(30) Fuel tank Engines with a Single Turbocharger
Illustration 2 g03694003
A typical example of a block diagram for the engine with a single turbocharger
(1) Air cleaner
(2) Air inlet temperature sensor
(3) Exhaust gas cooler (NRS)
(4) Turbocharger
(5) NRS temperature sensor
(6) Exhaust gas valve for the NOx Reduction System (NRS)
(7) NRS inlet pressure sensor
(8) Exhaust gas valve (NRS)
(9) Air-to-air aftercooler
(10) Wastegate regulator
(11) NRS differential pressure sensor
(12) Engine
(13) Coolant temperature sensor
(14) Crankshaft speed/timing sensor
(15) Electronic unit injectors
(16) Camshaft speed/timing sensor
(17) Fuel injection pump and fuel temperature sensor
(18) Fuel pressure sensor
(19) Oil pressure sensor
(20) Atmospheric pressure sensor
(21) ECM
(22) Fuel transfer pump
(23) Primary fuel filter
(24) In-line fuel filter
(25) Boost pressure sensor
(26) Inlet manifold air temperature sensor
(27) Transfer pump inlet regulator
(28) Secondary fuel filter
(29) Fuel tank Aftertreatment System with a DOC, DPF, and DEF system
Illustration 3 g03694431
Block diagram for the aftertreatment system with a DOC, DPF, and DEF system
(31) Diesel Exhaust Fluid (DEF) level sensor
(32) DEF temperature sensor
(33) Coolant diverter valve
(34) DEF header unit
(35) Dosing Control Unit (DCU)
(36) DEF tank
(37) Soot sensor and antennas
(38) Heated DEF line
(39) Heated DEF line
(40) Diesel Oxidation Catalyst (DOC) inlet temperature sensor
(41) Diesel Particulate Filter (DPF) inlet temperature sensor
(42) DPF outlet NOx sensor
(43) DEF pump heater
(44) DEF filter
(45) Exhaust Back Pressure Regulator (EBPR)
(46) Diesel Oxidation Catalyst (DOC)
(47) Diesel Particulate Filter (DPF)
(48) Heated DEF line
(49) DEF dosing pump
(50) DEF injector
(51) Selective Catalytic Reduction (SCR) catalyst
(52) Ammonia Oxidizing (AMOX) catalyst
(53) SCR inlet temperature sensor
(54) SCR outlet NOx sensor
(55) Identification module Aftertreatment System with a DOC, and DEF system
Illustration 4 g03694448
Block diagram for the aftertreatment system with a DOC and DEF system
(31) Diesel Exhaust Fluid (DEF) level sensor
(32) DEF temperature sensor
(33) Coolant diverter valve
(34) DEF header unit
(35) Dosing Control Unit (DCU)
(36) DEF tank
(37) Heated DEF line
(38) Heated DEF line
(39) DEF pump heater
(40) Inlet NOx sensor
(41) Diesel Oxidation Catalyst (DOC) inlet temperature sensor
(42) DEF filter
(43) Exhaust Back Pressure Regulator (EBPR)
(44) Diesel Oxidation Catalyst (DOC)
(45) Heated DEF line
(46) DEF dosing pump
(47) DEF injector
(48) Selective Catalytic Reduction (SCR) catalyst
(49) Ammonia Oxidizing (AMOX) catalyst
(50) SCR inlet temperature sensor
(51) Outlet NOx sensor
(52) Ammonia sensor
(53) Identification module Sensor Locations for the Engine
The illustrations in this section show the typical locations of the sensors for the industrial engine. Specific engines may appear different from the illustration due to differences in applications.
Illustration 5 g03706468
Typical example
(1) Coolant temperature sensor
(2) Fuel pressure sensor
(3) Inlet manifold temperature sensor
(4) Boost pressure sensor
(5) Electronic Control Module (ECM)
(6) Atmospheric pressure sensor
(7) Electric fuel transfer pump
(8) Crankshaft speed/timing sensor
(9) Engine oil pressure sensor
(10) Fuel temperature sensor
(11) Suction control valve for the fuel injection pump
Illustration 6 g03706470
Typical exa