The exhaust emissions controls
include f our systems: PGM-FI,
ignition timing control, exhaust gas
recirculation, and three way catalytic
converter. These f our systems work
together to control the engine’s
combustion and minimize the
amount of HC, CO, and NOx that
come out the tailpipe. The exhaust
emissions control systems are
separate f rom the crankcase and
evaporative emissions control
systems.The emissions control systems are
designed and certif ied to work
together in reducing emissions to
levels that comply with the Clean Air
Act. To make sure the emissions
remain low, you should use only new
Acura replacement parts or their
equivalent f or repairs. Using lower
qualitypartsmayincreasethe
emissions f rom your vehicle.
The emissions control systems
The PGM-FI system uses sequential
multiport f uel injection. It has three
subsystems: air intake, engine
control, and f uel control. The
powertrain control module (PCM) in
automatic transmission vehicles or
the engine control module (ECM) in
manual transmission vehicles uses
various sensors to determine how
much air is going into the engine. It then controls how much f uel to inject
under all operating conditions.
The three way catalytic converter is
in the exhaust system. Through
chemical reactions, it converts HC,
CO, and NOx in the engine’s exhaust
to carbon dioxide (CO ), nitrogen
(N ), and water vapor. The exhaust gas recirculation (EGR)
system takes some of the exhaust
gas and routes it back into the intake
manif old. Adding exhaust gas to the
air/f uel mixture reduces the amount
of NOx produced when the fuel This system constantly adjusts the
ignition timing, reducing the amount
of HC, CO, and NOx produced.
2
2
Exhaust Emissions Controls Replacement Parts
PGM-FI System
Three Way Catalytic Converter
Exhaust Gas Recirculat ion (EGR)
Syst em
Ignit ion T iming Cont rol Syst em
Emissions Cont rols
624
11/01/14 19:43:13 31TK4630_629
Technical Inf ormation
are covered by warranties separate
from the rest of your vehicle. Read
your warranty manual for more
information.
is burned.
2012 TL
................................
AAC .273, 313,365
....................................
Accessories .479
ACCESSORY (Ignition Key .....................................
Position) .151
ACCESSORY Mode ...................
(Power Mode) . 184,185
............
Accessory Power Sockets . 215
................
Active Head Restraints . 165
....................................
AcuraLink
. 449
....................
Additives, Engine Oil . 544
...........................
Advanced Airbags .28
...............................
Airbag (SRS) .9, 24
..........
Airbag System Components . 24
......
Air Conditioning System . 226,227
.........................................
Usage .228
...............
Air Pressure, Tires . 568,570
......................................
Antif reeze .546
Anti-lock Brakes (ABS) ...............................
Indicator .66, 508
...................................
Operation .508
..............
Anti-thef t, Audio System . 390
Anti-thef t Steering Column ....................................
Lock .151, 189
................................
Audio System .235 .
Automatic Lighting Off Feature . 141
...
Automatic Seat Belt Tensioners . 22
.............
Automatic Speed Control . 401
..............
Automatic Transmission . 494
..........................
Capacity, Fluid .614
...............
Checking Fluid Level . 549
..........................
Paddle Shif ters .499
.......................................
Shif ting .495
Shif t Lever Position ...............................
Indicators .494
....................
Shif t Lock Release . 497
......................
Auxiliary Input Jack .389
Battery Charging System ...........................
Indicator .65, 596
............................
Jump Starting .591
..............................
Maintenance .577
.................
Management System . 87
............................
Specif ications .615
..............................
Bef ore Driving .467
....................................
Belts,Seat .8,20
.........................
Beverage Holders .214 Blind Spot Inf ormation System
...........................................
(BSI) .519
...................
Audio . 281,376
...............
HandsFreeLink. 407, 424
..................................
Booster Seats .54
Brakes ...........
Anti-lock System (ABS) . 508
.............
Break-in, New Linings . 468
...........................................
Fluid .553
.......................................
Parking .212
.................
System Indicator . 65,598
........................
Wear Indicators .507
.............................
Braking System .507
.................
Break-in, New Vehicle . 468
Brightness Control, ...............................
Instruments .143
....................................
Built-In Key .201
Bluetooth
Bluetooth
A
B
I
11/01/17 13:16:41 31TK4630_640
INDEXA B C D E F G H I J K L \℮M N O P Q R S T U V W X \℮Y Z
2012 TL
