2006 HONDA ACCORD evap

Î
ÎThe burning of gasoline in your
vehicle’s engine produces several by-
products. Some of these are carbon
monoxide (CO), oxides of nitrogen
(NOx), and hydrocarbons (HC).
Gasoline evaporating f rom the tank
also produces hydrocarbons. Con-
trolling the production of NOx, CO,
and HC is important to the environ-
ment. Under certain conditions of
sunlight and climate, NOx and HC
react to f orm photochemical ‘‘smog.’’
Carbon monoxide does not contri-
bute to smog creation, but it is a
poisonous gas. The United States Clean Air Act
sets standards f or automobile
emissions. It also requires that
automobile manufacturers explain to
owners how their emissions controls
workandwhattodotomaintain
them. This section summarizes how
the emissions controls work.
In Canada, Honda vehicles comply
with the Canadian emission
requirements, as specif ied in an
agreement with Environment
Canada, at the time they are
manuf actured.
Your vehicle has a positive
crankcase ventilation system. This
keeps gasses that build up in the
engine’s crankcase f rom going into
the atmosphere. The positive
crankcase ventilation valve routes
them from the crankcase back to the intake manif old. They are then
drawn into the engine and burned.
As gasoline evaporates in the f uel
tank, an evaporative emissions
control canister f illed with charcoal
adsorbs the vapor. It is stored in this
canister while the engine is of f . Af ter
the engine is started and warmed up,
the vapor is drawn into the engine
and burned during driving.
The onboard ref ueling vapor
recovery (ORVR) system captures
the f uel vapors during ref ueling. The
vapors are adsorbed in a canister
f illed with activated carbon. While
driving, the f uel vapors are drawn
into the engine and burned of f .
Emissions Cont rols
The Clean Air Act
Crankcase Emissions Control
System
Evaporative Emissions Control
System
Onboard Ref ueling Vapor
Recovery
272
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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
comes out the tailpipe. The exhaust
emissions control systems are
separate f rom the crankcase and
evaporative 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. Itthen controls how much f uel to inject
under all operating conditions. The emissions control systems are
designed and certif ied to work to-
gether in reducing emissions to
levels that comply with the Clean Air
Act. To make sure the emissions
remain low, you should use only new
Honda replacement parts or their
equivalent f or repairs. Using lower
qualitypartsmayincreasethe
emissions f rom your vehicle.
The emissions control systems are
covered by warranties separate f rom
the rest of your vehicle. Read your
warranty manual f or more inf orma-
tion.
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 f uel is
burned.
This system constantly adjusts the
ignition timing, reducing the amount
of HC, CO, and NOx produced.
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.
2
2
Emissions Cont rols
Exhaust Emissions Controls Replacement Parts
PGM-FI Syst em
Three Way Catalytic Converter
Exhaust Gas Recirculat ion (EGR)
Syst em
Ignit ion T iming Cont rol Syst em
T echnical Inf ormation
273
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.......................................
Child Seats . 34
...........
Lower Anchorage Points . 43
..........
Tether Anchorage Points . 47
..............
Climate Control Sensors . 113
.........................
Clock, Setting the . 143
...................................
Clutch Fluid . 216
........................
CO in the Exhaust . 274
............
Cold Weather, Starting in . 169
..............................
Compact Spare . 238
...................
Console Compartment . 99
.................
Consumer Inf ormation . 280
.............
Controls, Instruments and . 55
Coolant
........................................
Adding . 208
....................................
Checking . 160
.........................
Proper Solution . 208
...................
Temperature Gauge . 65
Crankcase Emissions Control ........................................
System . 274
............
Cruise Control Operation . 145
.............
Customer Service Of f ice . 280
................
DANGER, Explanation of . ii
...................................
Dashboard . 4, 56 ................
Daytime Running Lights . 70
............
Def ects, Reporting Saf ety . 282
................
Def ogger, Rear Window . 72
....................................
Dimensions . 266
...............
Dimming the Headlights . 69
Dipstick
.
Automatic Transmission . 210, 211
..................................
Engine Oil . 159
..........................
Directional Signals . 69
........
Disc Brake Wear Indicators . 179
.....................
Disposal of Used Oil . 206
Doors
..............
Locking and Unlocking . 77
..........
DOT Tire Quality Grading . 269
Downshif ting, Manual
.............................
Transmission . 170
...........
Driver and Passenger Safety . 7
...........................................
Driving . 167
....................................
Economy . 161
..........
Dual Temperature Control . 111
..............................
Economy, Fuel . 161
............
Emergencies on the Road . 237
.............
Battery, Jump Starting . 245 ...........
Brake System Indicator . 253
................
Changing a Flat Tire . 239
.....
Charging System Indicator . 251
..................
Checking the Fuses . 257
.....
Low Oil Pressure Indicator . 250
...
Malf unction Indicator Lamp . 251
...
Manually Closing Moonroof . 254
..................
Overheated Engine . 248
...........................
Emergency Brake . 95
......................
Emergency Flashers . 71
......................
Emergency Towing . 255
.......................
Emissions Controls . 274Engine
....
Coolant Temperature Gauge . 65
Malf unction Indicator
......................................
Lamp . 251
.......................
Oil Lif e Indicator . 193
..............
Oil Pressure Indicator . 250
..............
Oil, What Kind to Use . 203
...............................
Overheating . 248
............................
Specif ications . 266
....................
Speed Limiter . 172, 175
.......................................
Starting . 169
..........
Engine Speed Limiter . 172, 175
.
Evaporative Emissions Controls . 274
...............................
Exhaust Fumes . 52
Index
D E
II
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