Technical Information
236
Emission Control Systems
Source of Exhaust Emissions
The combustion process produces carbon monoxide (CO), oxides of
nitrogen (NOx) and hydrocarbons (HC). Control of hydrocarbons and
oxides of nitrogen is very important because, under certain
conditions, they react to form photochemical smog when subjected
to sunlight. Carbon monoxide does not react in the same way, but it
is toxic.
Honda Motor Co., Ltd. utilizes various systems to reduce carbon
monoxide, oxides of nitrogen and hydrocarbons.
Exhaust Emission Control System
The exhaust emission control system includes a PGM-FI system and
oxygen sensor.
No adjustment to this system should be made although periodic
inspection of the components is recommended.
The exhaust emission control system is separate from the crankcase
emission control system.
Evaporative Emission Control System
(USA - 50 States [meets California])
An evaporative emissions control system uses a canister filled with
charcoal to adsorb fuel vapor from the fuel tank while the engine is
off. The vapor is drawn into the engine and burned while driving.
Models sold in and used in California:
An add-on or modified part must be compliant with applicable ARB
evaporative emission control standards. A violation of this
requirement is punishable by civil and/or criminal punishment.
20 TRX420TM1 FM1 FM2-31HR36600.book 236 ページ 2019年4月5日 金曜日 午前11時56分
Summary of Contents for FourTrax Rancher TRX420FM1 2020
Page 10: ...20 TRX420TM1 FM1 FM2 31HR36600 book 9 ページ 2019年4月5日 金曜日 午前11時56分 ...
Page 74: ...Before Riding 64 20 TRX420TM1 FM1 FM2 31HR36600 book 64 ページ 2019年4月5日 金曜日 午前11時56分 ...
Page 202: ...Servicing Your Honda 192 20 TRX420TM1 FM1 FM2 31HR36600 book 192 ページ 2019年4月5日 金曜日 午前11時56分 ...
Page 273: ...PRINTED IN USA WPCXXXX 2019 XX L 00X31 HR3 6600 31HR3660 ...