Environmental Protection Device - Wolf ISLANDER Operating Instructions Manual

Environmental protection device

The environmental protection device is mainly a
two-in-one air compensating valve (air pump) combining
a one-way leaf valve and a secondary air control valve.
. By making use of the engines vacuum pulsation, the air
pump controls the amount of air needed to enter the
exhaust port through the one-way leaf valve and the
secondary air control valve. This fresh air enters the
exhaust passage of the engine under the action of the air
pump. Unburned fuel vapor discharged from the engine in
its exhaust is then consumed. Thusly this device reduces
the exhaust pollution of the vehicle, and ensures that the
vehicles exhaust meets National Stage III emission
standards.
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USER'S MANUAL
Emission Standards of vehicles (Stage III , under the running mode)
Emitted pollutants
CO
HC
NOx
Emission Standards of Mopeds (Stage III , under the running mode)
Emitted pollutants
CO
HC + NOx
Limits of exhaust pollutants of s
In case of idle type approval test, the volume concentration of emitted CO is
≤3.8%; and the volume concentration of emitted HC is ≤800×10-6;
In case of Production consistency check test, the volume concentration of
emitted CO is ≤4.0%; and the volume concentration of emitted HC is
≤1000×10-6.
Instructions to Users
vehicles
Two-wheel
2.0
0.8
0.15
Two-wheel moped
1.0
1.2
/mopeds under idle conditions
cooter
Unit:g/km
Unit:g/km